CX11627

CX11627 CONEXANT | Alldatasheet

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Doc. No. 100427B May 4, 2000 AccessRunner ADSL-USB Modem Device Set Scalable, Discrete Multitone-based, T1.413 Issue 2, G.992.1 (G.dmt), and G.992.2 (G.lite) - Compliant ADSL Modem Device Set Data Sheet Conexant Proprietary Information

AccessRunner ADSL-USB Modem Device Set Data Sheet ii Conexant 100427B

Revision History

A 1/27/2000 Initial release B 5/4/2000 Added hardware interface tables and host interface description. © 2000, Conexant Systems, Inc. All Rights Reserved. Information in this document is provided in connection with Conexant Systems, Inc. (“Conexant”) products. These materials are provided by Conexant as a service to its customers and may be used for informational purposes only. Conexant assumes no responsibility for errors or omissions in these materials. Conexant may make changes to specifications and product descriptions at any time, without notice. Conexant makes no commitment to update the information and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to its specifications and product descriptions. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Conexant’s Terms and Conditions of Sale for such products, Conexant assumes no liability whatsoever. THESE MATERIALS ARE PROVIDED “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, RELATING TO SALE AND/OR USE OF CONEXANT PRODUCTS INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, CONSEQUENTIAL OR INCIDENTAL DAMAGES, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. CONEXANT FURTHER DOES NOT WARRANT THE ACCURACY OR COMPLETENESS OF THE INFORMATION, TEXT, GRAPHICS OR OTHER ITEMS CONTAINED WITHIN THESE MATERIALS. CONEXANT SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION, LOST REVENUES OR LOST PROFITS, WHICH MAY RESULT FROM THE USE OF THESE MATERIALS. Conexant products are not intended for use in medical, lifesaving or life sustaining applications. Conexant customers using or selling Conexant products for use in such applications do so at their own risk and agree to fully indemnify Conexant for any damages resulting from such improper use or sale. The following are trademarks of Conexant Systems, Inc.: Conexant™, the Conexant C symbol, “What’s Next in Communications Technologies”™, and AccessRunner™. Product names or services listed in this publication are for identification purposes only, a nd may be trademarks of third parties. Third-party brands and names are the property of their respective owners. For additional disclaimer information, please consult Conexant’s Legal Information posted at www.conexant.com, which is incorporated by reference. Reader Response: Conexant strives to produce quality documentation and welcomes your feedback. Please send comments and suggestions to tech.pubs@conexant.com. For technical questions, contact your local Conexant sales office or field applications engineer.

AccessRunner ADSL-USB Modem Device Set Data Sheet iv Conexant 100427B

AccessRunner ADSL-USB Modem Device Set Data Sheet vi Conexant 100427B Tables

AccessRunner ADSL-USB Modem Device Set Data Sheet 100427B Conexant 1-1 1. Introduction

1.1 Overview

The Conexant AccessRunner ADSL-USB Modem Device Set combines an “always-on” high speed Asymmetric Digital Subscriber Line (ADSL) connection to the telephone line, and Universal Serial Bus (USB) connection to a host PC into a single cost-effective solution. Conexant’s AccessRunner ADSL modem device set is compliant with the full-rate ANSI T1.413 Issue 2 and ITU G.dmt for Customer Premise Equipment and supports downstream data rates of up to 8 Mbps and upstream data rates of up to 1 Mbps. The device set takes advantage of the processing power available with today’s computers by eliminating the need for a separate ATM Segmentation and Reassembly (SAR) device, resulting in a cost-effective solution suitable for both full rate and G.lite applications. Additionally, host-based software provides support for current industry standards for PPP over ATM (RFC 2364) and bridged Ethernet over ATM (RFC 1483) for Windows 98 and Windows 2000. The USB specification version 1.1 is supported and is the preferred standard method to connect peripherals to PCs. During periods of no data transmission, the Conexant ADSL DMT data pump performs idle cell insertion and deletion thus unloading this task from the host PC. The device set consists of four devices (see Figure 1-1 and Figure 1-2):

• USB Interface Controller (UIC), part no. P5200, in a 176-pin TQFP
• ADSL DMT Data Pump (ADDP), part no. CX11627, in a 176-pin TQFP
• Analog Front End (AFE), part no. CX20431, in a 32-pin TQFP
• Line Driver (LD), part no. CX20441, in a 32-pin TQFP ADSL (Asymmetric Digital Subscriber Line) is a transmission technology used to carry user data over a single twisted pair line between the Central Office and the Customer Premises. The downstream (Central Office to Customer Premises) direction typically supports a much higher data rate than the upstream or return (Customer Premises to Central Office) channel. This asymmetric nature lends itself to applications like remote LAN access, Internet access, and video delivery. The downstream data rates can go up to 8 Mbps. The upstream data rates can go up to 1 Mbps. Actual data rates depend on the transceiver implementation, loop length, impairments, and transmitted power. The Conexant ADSL-USB Modem Device Set is based upon a scalable architecture. This architecture enables the device set to support splitterless G.lite as well as splittered and splitterless full-rate ADSL. G.lite enables telephone companies to dep loy consumer-oriented, “always on” 1.5 Mbps Internet access services without the need for splitter equipment, micro-filters, or wiring changes at the customer premises.

1.2 Applications

• ADSL Customer Premise Equipment
• ADSL USB modems for desktop PCs
• ADSL USB modems for notebook PCs P5200 USB Interface Controller (UIC) 176-Pin TQFP CX11627 ADSL DMT Data Pump (ADDP) 176-Pin TQFP CX20431 Analog Front End (AFE) 32-Pin TQFP TIP RING 100428_F1-1_SID USB Interface TELEPHONE LINE CX20441 Line Driver (LD) 32-Pin TQFP Host-Based ADSL Drivers Device Set Figure 1-1. AccessRunner ADSL-USB Modem Device Set Simplified Hardware Interface

AccessRunner ADSL-USB Modem Device Set Data Sheet Conexant 100427B1-2 Table 1-1. AccessRunner ADSL-USB Modem Device Set Models and Part Numbers Model/Order/Part Numbers Marketing Name Device Set Order No. USB Interface Controller (UIC) [176-pin TQFP] Part No. ADSL DMT Data Pump (ADDP) [176-pin TQFP] Part No. Analog Front End (AFE) [32-pin TQFP] Part No. Line Driver (LD) [32-pin TQFP] Part No. AccessRunner ADSL-USB Modem Device Set DSAR-L100-501 P5200-12 CX11627-11 CX20431-21 CX20441-11 SDRAM/SRAM Required: 2Mbit SDRAM Options One 1M x 16 = 2 MB, Two 2M x 8 = 4 MB, or One 4M x 16 = 8 MB Refresh Rate: 15.625 us SRAM Options One 128k x 16 = 2 Mbit or Two 128k x 8 = 2 Mbit Access Time: 15 ns CX11627 ADSL DMT Data Pump (ADDP) 176-Pin TQFP CX20431 Analog Front End (AFE) 32-Pin TQFP TIP RING 100428_F1-2_FID USB Interface Telephone Line P5200 USB Interface Controller (UIC) 176-Pin TQFP CX20441 Line Driver (LD) 32-Pin TQFP ADSL Software Drivers Operating System Software and Modem Communication Application Software Host Computer EEPROM Conexant ADSL-USB Modem Device Set LEDS Reset Circuit JTAG Interface External Components Figure 1-2. AccessRunner ADSL-USB Modem Device Set Major Interfaces

AccessRunner ADSL-USB Modem Device Set Data Sheet 100427B Conexant 1-3

1.3 Features

• Complete ADSL-USB solution
• Compliant with ADSL standards − Full-rate ANSI T1.413 Issue 2 and ITU G.dmt (G.992.1) standards − Splitterless ITU G.lite (G.992.2) specification
• DMT modulation and demodulation
• Full-rate adaptive modem − Maximum downstream rate of 8 Mbps − Maximum upstream rate of 1 Mbps
• Supports splitterless ADSL implementation
• WAN mode support: PPP over ATM (RFC 2364)
• LAN mode support: bridged Ethernet over ATM (RFC 1483)
• Tone detection for low power mode
• USB host interface − Compliant with USB Specification, Revision 1.1 − USB full speed (12 Mbps) − Suspend/Resume − Vendor specific descriptors − Bus powered USB device
• ATM SAR performed in software driver

1.3.1 P5200 USB Interface Controller Features

• CX11627 ADSL DMT Data Pump (ADDP) interface
• CX20431 ADSL Analog Front End (AFE) interface
• CX20441ADSL Line Driver (LD) interface
• Internal USB interface
• SDRAM/SRAM interface
• LED interface
• Serial EEPROM interface
• JTAG interface
• 176-pin TQFP

1.3.2 CX11627 ADSL DMT Data Pump Features

• Low power (0.5W) consumption
• DSP-based programmable ADSL data pump
• No external Interleave RAM, 16 Kbytes built-in
• Echo cancellation
• Digital interface and rate buffering
• ADSL framing
• Forward Error Correction (FEC) encoding and decoding and interleaving
• Constellation encoding/decoding
• IFFT modulation and FFT demodulation
• Transmit and receive signal digital filtering
• Time domain equalization
• Frequency domain equalization
• Clock recovery
• CRC and scrambling
• Digital interface framing
• ATM mode

AccessRunner ADSL-USB Modem Device Set Data Sheet Conexant 100427B1-4

• Bit-synchronous mode
• 176-pin TQFP

1.3.3 CX20431 ADSL Analog Front End Features

• Receive signal path includes: − Integrated hybrid receiver circuit with programmable gain − High pass filtering and 27dB of Automatic Gain Control (AGC) to improve signal-to-echo ratio − 14-bit ADC
• Transmit signal path includes: − 30dB of AGC for transmit power control − Low pass filtering to suppress noise in the receive band − 14-bit DAC
• Independent digital serial data and control interfaces
• Low power tone detection mode
• 32-pin TQFP

1.3.4 CX20441 ADSL Line Driver Features

• Differential input and output line driver
• Line impedance matching during power-down
• Fixed differential gain
• Low power consumption (0.22 W typical)
• 32-pin TQFP

1.4 Reference Design

A reference design for a USB card is available to minimize application design time and costs. The card is pretested to pass FCC Part 15 and Part 68 for immediate manufacturing. A design package is available in electronic form. The design package includes files for schematics, bill of materials (BOM), board layout (Gerber format), and documentation. The design can also be used for the basis of a custom design by the OEM to accelerate design completion for rapid market entry.

AccessRunner ADSL-USB Modem Device Set Data Sheet 100427B Conexant 2-1 2. System Description

2.1 General Description

The ADSL - USB modem solution hardware connects to the host PC via USB interface. The complete chipset and system software is provided. The OEM adds a crystal circuit, EEPROM, RAM, LEDs, and other discrete components. All software to support a full rate and/or G.lite ADSL modem is provided. Additionally, a control panel providing connection and system status, an installation wizard providing automatic provisioning, a serial EEPROM programming utility, and a manufacturing test program are provided.

2.1.1 Boot ROM and Power Up Procedure

The P5200 USB Interface Controller (UIC) contains a boot loader in internal ROM. Upon power up, the P52 UIC reads the vendor specific USB descriptor information from EEPROM, and then enumerates with the host PC. EEPROM is required so that USB descriptor information can be supplied during the enumeration process.

2.1.2 Serial EEPROM Programming Utility

The OEM-supplied serial EEPROM is required to store the USB device, configuration, interface, and endpoint descriptors. A DOS-based EEPROM Programming Utility is available for the OEM to use to program the serial EEPROM with USB device, configuration, interface, and endpoint descriptors. The USB device descriptors (including Vendor ID, Product ID, Device Release Number, Manufacturer Name, Product Name, and Serial Number) can be customized as required.

2.2 ADSL Operation

2.2.1 ADSL Operating Modes

Both T1.413 and G.992.1 (G.dmt) line coding schemes are supported for downstream rates up to 8 Mbps and upstream rates up to 1 Mbps in 32 kbps increments. User selection of mode is supported through the provided control panel, however, auto- provisioning is supported so that the appropriate modulation is automatically selected based on what is supported by the DSL Access Multiplexer (DSLAM) at the Central Office. When operating in one of the full rate modes, the low and high frequency bands must be separated with a filter. This can be done with either a service provider-installed splitter (known as “splittered ADSL”), or with the use of distributed micro-filters in line with each POTS device on the circuit (known as “splitterless full-rate ADSL”). Both deployment models are supported. G.lite Splitterless Mode G.992.2 (G.lite) splitterless mode is supported for downstream rates up to 1.5 Mbps and upstream rates up to 512 kbps in 32 kbps increments. User selection of mode is supported through the provided control panel, however, auto-provisioning is supported so that the appropriate modulation is automatically selected based on what is supported by the DSLAM at the Central Office. When operating in splitterless mode, the low and high frequency bands do not need to be separated with a filter, and neither a service provider installed splitter, nor distributed micro-filters are required. G.lite mode supports power management by defining a set of power management states for the link and the use of the Embedded Operations Channel (eoc) to coordinate between the ATU-R and ATU-C. LAN Mode RFC-1483, bridged Ethernet over ATM, is supported in the LAN driver. This protocol provides LLC encapsulation for carrying network interconnect traffic over a single ATM AAL5 Virtual Connection. LLC encapsulation is desirable when it is not practical to have a separate VC for each carried protocol, such as with an ATM network that only supports Permanent Virtual Circuits (PVCs). The provided NDIS 5 drivers automatically establish a “connection-less” call using the defined PVC, and encapsulate Ethernet bridged frames. WAN Mode RFC-2364, PPP over ATM, is supported in the WAN driver. Point-to-Point Protocol provides a method of transporting multi- protocol packets over point-to-point links. Point-to-point links allow for services such as Link Control Protocol, Network-laye r Control Protocol, and authentication. The PPP over ATM standard brings these point-to-point services to the ATM network where they are not inherently supported. The provided NDIS 5 drivers accept an empty dial string on a specific “link” or PVC from Windows Dial-up Networking to establish a call, and encapsulate PPP frames.

AccessRunner ADSL-USB Modem Device Set Data Sheet Conexant 100427B2-2 User selection of WAN or LAN mode can be done manually via the provided control panel. However, auto-configuration is supported with the provided installation wizard, so that the protocol mode is selected properly without user intervention.

2.2.2 Host Software

The host software NDIS miniport driver provided implements the ATM Adaptation Layer 5 (AAL5), which is composed of two sublayers: 1) the Segmentation and Reassembly (SAR) layer, and 2) the Convergence Sublayer (CS). The AAL5 protocol provides virtual connections, which offer error detection, but not error correction, between end stations attached to the same network. The SAR sublayer transmitter segments the higher layer information into a size suitable for the payload of the ATM cells of a virtual connection. The receiver reassembles the contents of the cells of a virtual connection into data units to be delivered to higher layers. During periods of no data transmission, the device set, and not the host software driver, performs idle cell insertion and deletion, thus unloading this task from the host PC and unburdening the USB with unnecessary traffic. The Convergence Sublayer performs message identification and clock recovery. Additionally, the CS of the AAL converts the user service information coming from the upper layer into a protocol data unit (PDU), and also carry out the opposite process at the receiver. Unspecified Bit Rate (UBR) service is supported. It allows a connection to be established without specifying the bandwidth expected from the connection. The network makes no guarantees for UBR service: it establishes the route but does not commit bandwidth. UBR can be used for applications that have no delivery constraints and do their own error and flow control. Examples of potential uses or UBR are e-mail and file transfer, as neither application has real-time characteristics.

2.2.3 Control Panel

A Windows Control Panel Applet is provided to monitor and control ADSL line and call activity, accumulate ADSL line and call statistics, and identify the software and connection information. The control panel provides different levels of information: 1 ) User, 2) Advanced User, 3) Developer. It is intended that only the User level information, which consists of basic connection statistics such as line rate and connect status, is available to the end user. Other information available to the Advanced User and Developer include Physical Layer Statistics, ATM Link Statistics, AAL Link Statistics, Protocol setup, and a logging capability, which collects performance data and logs it to disk.

2.2.4 Installation Wizard

A Windows Installation Wizard is provided to ease the user’s provisioning of the ADSL service. The Wizard allows the user to select a service provider allowing the associated setup profile to automatically ensure proper setup and installation of the software drivers. The profiles, based on input from various ADSL service providers, are provided to facilitate deployment and to minimize user involvement in provisioning ADSL service. A profile contains configuration information for physical layer options, ATM layer parameters, AAL layer parameters, and TCP/IP layer parameters.

2.3 Device Description

2.3.1 P5200 UIC Description

The P5200 USB Interface Controller (UIC) is the bridge device between the CX11627 ADSL DMT Data Pump (ADDP) and the host computer. It provides the control, interface, and data manipulation for the CX11627 ADDP, the CX20431 Analog Front End (AFE), the CX20441 Line Driver (LD), and hybrid circuitry. The P5200 has output ports for LED indicators and an interface to serial EEPROM for storing vendor specific descriptors. The UIC conforms to the USB Specification Rev. 1.1 and supports full-speed (12 Mbps) USB device implementation. The P5200 operates from +1.8V for core operation and +3.3V for interface circuit operation. The P5200 can operate with +3.3V interface signals (VGG = +3.3V) or +5V interface signals (VGG = +5V). ARM Processor The ARM Processor provides the controller and supervisory tasks of the ADSL-USB system. It moves data between the USB port and the ADSL interface. Control code for the ARM is executed from external memory under control of the External Memory Controller (EMC). External Memory Controller The External Memory Controller (EMC) provides a 16-bit interface to support up to 8 Mbytes of external memory. SDRAM or SRAM is supported to maintain lowest cost of external memory. There can be 1 (16 bits wide) or 2 (8 bits wide) memories that can reside on the EMC bus. This bus is not shared with any other functions so activity on this bus can be concurrent with asynchronous and independent USB port or ADSL data transfers.

AccessRunner ADSL-USB Modem Device Set Data Sheet 100427B Conexant 2-3 ADSL Interface ARM Processor Control Logic Host Interface GPIO RAM ROM USB Interface External Memory Controller (EMC) SDRAM or SRAM USB ADSL Data Pump and AFE

100427 F2-1_BD_P5200

Figure 2-1. P5200 UIC Block Diagram Host Interface The Host Interface is a 16-bit data and 21-bit address bus used for control of the ADSL Data Pump. ADSL Interface The ADSL Interface is responsible for data transfer to and from the ADSL Data Pump and the setup of the AFE. USB Interface The USB Interface is responsible for data transfer to and from the USB, by extracting clock and data from the USB cable. It also handles the front end functions of the USB protocol such as Sync Field Identification, NRZI-NRZ Conversion, Bit Stripping and Stuffing, and CRC functions. Additionally, the USB port converts the serial packet to 8-bit parallel data. Contro l transfers addressed to End Point Zero are handled by the USB port. LED Interface GPIO are used to support the following LED signals: Power, Ready, Showtime, TXD, and RXD. EEPROM Interface A 2-wire serial EEPROM is used to store USB device, configuration, interface, and endpoint descriptors. Device descriptors include Vendor ID, Product ID, Device Release Number, Manufacturer Name, Product Name, and Serial Number. Both 4196 bit and 2048 bit EEPROMs are supported. The EEPROM speed must be capable of 400 kHz clock frequency. A typical 4196 bit (512 x 8) EEPROM that meets P5200 UIC requirements is the Fairchild M24C04M8 or equivalent. A typical 2048 bit (256 x 8) EEPROM that meets P5200 UIC requirements is the Fairchild M24C02M8 or equivalent. General Purpose Input/Output Interface Most General Purpose Input/Output (GPIO) pins are programmed for dedicated system functions or reserved for test or growth functions and are not available for user assignment. Each GPIO pin is controlled individually for input/output direction . All GPIO pins can serve as external interrupt inputs.

AccessRunner ADSL-USB Modem Device Set Data Sheet Conexant 100427B2-4

2.3.2 CX11627 ADDP Description

processing (DSP) chip built specifically for DMT ADSL transmission for use in ADSL modems. The CX11627 operates from +2.5V for core operation and +3.3V for interface circuit operation. A block diagram of the CX11627 ADDP is shown in Figure 2-2. ATM Transmission Convergence In the transmit direction, the ATM Transmission Convergence (TC) block embeds ATM cells into the serial data stream being fed into the digital interface, i.e., the P5200 UIC. In the receive direction, this block extracts the ATM cell boundaries from the serial data stream coming from the digital interface To reduce traffic on the USB, the TC block performs idle cell insertion in the transmit direction and idle cell deletion and header error correction in the receive direction. Digital Interface The Digital Interface (DI) Transmit Block performs the following functions: transmit data multiplexing and buffering, fast and interleave data stream framing, transmit data synchronization control, eoc/aoc insertion, CRC encoding, scrambling, FEC encoding, and data interleaving. The DI Receive Block performs the following functions: data de-interleaving, FEC decoding, descrambling, CRC check, receive data synchronization and receive clock generation, demultiplexing and buffering of receive data and receive eoc/aoc. QAM Encoder/Decoder The QAM Encoder/Decoder performs the following functions: constellation encoding, clock recovery, receive gain compensation, frequency domain equalization (FEQ), slicing, and constellation decoding. The block also performs other functions such as frequency domain signal processing, signal power, error power averaging and computations related to frequency domain training. FFT The FFT performs IFFT for modulation of the transmit symbol, and FFT for demodulation of the receive symbol. Analog Front End Interface The Analog Front End (AFE) interface performs the following functions: transmit signal filtering, time domain equalization, and time domain signal power averaging, and echo cancellation (EC). Microcontroller Interface The microcontroller interface enables the P5200 UIC to set parameters to control DSP sequencing and to read/write coefficients or data. DI Transmit Block DI Receive Block Digital Interface (DI) Bit Parser and QAM Encoder QAM Decoder and Bit Parser QAM Encoder/Decoder FEQ IFFT FFT FFT Transmit Filter Time Domain Equalizer ADC Intf AFE Interface DAC Intf Microcontroller Interface EC P5200 USB Interface Controller (UIC) ATM TC CX20431 Analog Front End (AFE)

100427 F2-2 BD 11627

CX11627 ADSL DMT Data Pump (ADDP) Figure 2-2. CX11627 ADDP Block Diagram

AccessRunner ADSL-USB Modem Device Set Data Sheet 100427B Conexant 2-5

2.3.3 CX20431 AFE Description

The CX20431 Analog Front End (AFE) can support full-rate and G.lite (G.992.2) ADSL modems. The CX20431 AFE interfaces with the CX20441 LD and the hybrid receive circuitry on the analog side, and with the CX11627 ADDP on the digital side. The receive section filters out the unwanted echo and boosts the wanted signal before performing an analog-to-digital (A/D) conversion. The transmit section converts digital data to analog signals and performs a smoothing operation before presenting the signals to the line driver. Wakeup in G.lite mode is supported by tone detection circuitry integrated in the CX20431 AFE. The CX20431 operates from a +3.3V supply. A block diagram of the CX20431 AFE is shown in Figure 2-3. Reference Generators High Pass Filter CX20431 Analog Front End (AFE) Hybrid OpAmp Low Pass Filter Decimation Filter SC Filter Serial Interface Interpolation Filter Low Pass Filter ADC AGC AGCDAC Analog SectionDigital Section P5200 USB Interface Controller (UIC)

100427 F2-3_BD_P20431

(LD) Hybrid CX11627 ADSL Data Pump (ADDP) Figure 2-3. CX20431 AFE Block Diagram

AccessRunner ADSL-USB Modem Device Set Data Sheet Conexant 100427B2-6

2.3.4 CX20441 LD Description

ideal ADSL performance providing low noise, high bandwidth, and superior linearity. The CX20441 LD transmits a DMT modulated signal in the 25 – 132 kHz band. The CX20441 LD operates from a +5V supply. Internal load balancing prevents the CX20441 LD from loading the system when in a power down state. A block diagram of the CX20441 LD is shown in Figure 2-4. Current Control Block 248.4 248.4 400 OUTP_DRV OUTM_DRV INP_DRV INM_DRV RBIAS

100427 F2-4_BD_20441

Figure 2-4. CX20441 LD Block Diagram

AccessRunner ADSL-USB Modem Device Set Data Sheet 100427B Conexant 3-1 3. Hardware Interface

3.1 P5200 UIC Hardware Interface Signals

3.1.1 P5200 UIC Signal Interface, Pin Assignments, and Signal Definitions

P5200 UIC hardware interface signals are shown in Figure 3-1. P5200 UIC pin assignments are shown in Figure 3-2. P5200 UIC hardware interface signals are defined in Table 3-1. Input/output types are described in Table 3-2.

AccessRunner ADSL-USB Modem Device Set Data Sheet Conexant 100427B3-2 USBP USBN FCLKIO (GPIO39) USB_Pwr_Det (GPIO22) CLKI BOPT (GPIO14) PLLBP HRST# LED_READY (GPIO07) LED_SHOWTIME (GPIO18) LED_TXD (GPIO19) LED_RXD (GPIO20) I2C_SCL (GPIO16) I2C_SDA (GPIO15) TRST# TCK TMS TDI TDO TREQA VDD VDD VDD VDD VDDA VDDO VDDO VDDO VDDO VDDO VDDO VDDO VDDO VDDO VDDO VDDO VDDO VDDO VDDO VDDO VGG VGG VSS VSS VSS VSS VSSO VSSO VSSO VSSO VSSO VSSO VSSO VSSO VSSO VSSO VSSO VSSO VSSO VSSO VSSO VSSA Reserved (GPIO06) Reserved (GPIO17) Reserved (GPIO25) Reserved Reserved Reserved Reserved Reserved Reserved Reserved 151 152 150 160 176 154 107 117 127 137 147 158 171 101 100 155 108 118 128 138 148 159 172 157 175 +3.3V BCLKIO (GPIO38) PAIR_SEL (GPIO21) LD_OH_DET (GPIO05) LD_PC (GPIO13) AFE_RST# (GPIO08) AFE_SCLK AFE_STB AFE_CTRLIN AFE_CTRLOUT AFE_WAKEUP RXSOC0 RCLKAS0 RDATAS0 TXSOC0 TCLKLS0 TDATLS0 RST# (GPIO09) IRQ0 (GPIO10) IRQ1 (GPIO11) PD (GPIO12) SCANMODE (GPIO26) HAD00 HAD01 HAD02 HAD03 HAD04 HAD05 HAD06 HAD07 HAD08 HAD09 HAD10 HAD11 HAD12 HAD13 HAD14 HAD15 HC01 HC02 HC03 HC04 HC05 HC06 HC07 HAD16 HAD17 HAD18 HC08 HC09 HC12 (GPIO34) HA10 HAD19 HAD20 HAD21 HAD22 HAD23 HAD24 HAD25 HAD26 HAD27 HAD28 HAD29 HC00 (GPIO32) FLASH_RST# (GPIO23) HC11 (GPIO33) HAD31 (GPIO37) MB0 MB1 MA00 MA01 MA02 MA03 MA04 MA05 MA06 MA07 MA08 MA09 MA10 MA11 MD00 MD01 MD02 MD03 MD04 MD05 MD06 MD07 MD08 MD09 MD10 MD11 MD12 MD13 MD14 MD15 MM1 MM0 MCLK MCKE MRAS# MCAS# MWE# MCS# 156 166 161 168 169 167 173 174 170 162 163 164 165 153 149 146 145 144 143 142 141 140 139 136 135 134 133 132 121 120 119 116 115 114 113 112 111 110 109 106 105 104 103 102 124 125 122 123 126 129 131 130 CX20441 LD 100427_F3-01_HIS P5200 176T P5200 USB Interface Controller (UIC) 176-PIN TQFP SDRAM or SRAM USB INTERFACE USB PWR DETECT LED INTERFACE CLOCK RESET CIRCUIT EEPROM JTAG +3.3V OR +5V +1.8V +1.8V THROUGH FILTER GND NC CX20431 AFE CX11627 ADDP SERIAL INTERFACE CX11627 ADDP PARALLEL INTERFACE RECEIVE PAD I/O PAIR SEL ROH# PWRDWN# (OPTIONAL) PWRDWN# POR# STROBE CTRL_STRB CTRL_IN CTRL_OUT WAKEUP RXSOC0 R_NCO_AS0 R_DAT_AS0 TXSOC0 T_CLK_LS0 T_DAT_LS0 RSTB IRQ1 IRQ2 PWR_DWN SSCANMODE D00 D01 D02 D03 D04 D05 D06 D07 D08 D09 D10 D11 D12 D13 D14 D15 RDB WRB CSB BA0 BA1 A10 A11 D10 D11 D12 D13 D14 D15 DQMH DQML CLK CLKE RAS# CAS# WE# CS# CX11627 ADDP CONTROL 4.7K NC 1 K NC A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 OE# RESET# NC NC LINE INTERFACE USB Resume NC Figure 3-1. P5200 UIC Hardware Interface Signals

AccessRunner ADSL-USB Modem Device Set Data Sheet 100427B Conexant 3-3 100427F3-02 PO-P50-176T 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 132 131 130 129 128 127 126 125 124 123 122 121 120 119 118 117 116 115 114 113 112 111 110 109 108 107 106 105 104 103 102 101 100 176175174173172171170169168167166165164163162161160159158157156155154153152151150149148147146145144143142141140139138137136135134133 LED_SHOWTIME (GPIO18) LED_RXD (GPIO20) PAIR_SEL (GPIO21) AFE_SCLK AFE_CTRLOUT AFE_WAKEUP AFE_STB VDDO VSSO AFE_CTRLIN I2C_SCL (GPIO16) I2C_SDA (GPIO15) Reserved Reserved Reserved VDDO VSSO Reserved Reserved Reserved VDDA VSSA VGG Reserved VDD VSS CLKI PLLBP FCLKIO (GPIO39) BCLKIO (GPIO38) TRST# TCK TMS TDI TDO TREQA VDDO VSSO BOPT (GPIO14) HAD29 HAD28 HAD27 HAD26 HAD25 MA11 MWE# MCS# MCAS# VSSO VDDO MRAS# MM0 MM1 MCKE MCLK MD00 MD01 MD02 VSSO VDDO MD03 MD04 MD05 MD06 MD07 MD08 MD09 MD10 VSSO VDDO MD11 MD12 MD13 MD14 MD15 VGG VSS VDD HRST# FLASH_RST# (GPIO23) HC08 HC09 HC10 HC00 (GPIO32) VSSO VDDO HC11 (GPIO33) HC12 (GPIO34) LED_TXD (GPIO19)Reserved (GPIO17)TCLKLS0TXSOC0VSSOVDDOTDATLS0RCLKAS0RXSOC0RDATAS0LD_PC (GPIO13)PD (GPIO12)IRQ1 (GPIO11)IRQ0 (GPIO10)RST# (GPIO09)AFE_RST# (GPIO08)LED_READY (GPIO07)VSSOVDDOReserved (GPIO06)LD_OH_DET (GPIO05)VSSVDDSCANMODE (GPIO26)USBNUSBPUSB_Pwr_Det (GPIO22)MB0VSSOVDDOMB1MA00MA01MA02MA03MA04MA05MA06VSSOVDDOMA07MA08MA09MA10 HAD24HAD23VDDOVSSOHAD22HAD21HAD20HAD19HAD18HAD17HAD16HC07VDDOVSSOHC06HC05HC04HC03HC02HC01HAD15 VDDVSS Reserved (GPIO25) HAD31 (GPIO37) HAD14VDDOVSSOHAD13HAD12HAD11HAD10HAD09HAD08HAD07HAD06VDDOVSSOHAD05HAD04HAD03HAD02HAD01HAD00 P5200 Figure 3-2. P5200 UIC Pin Signals-176-Pin TQFP

AccessRunner ADSL-USB Modem Device Set Data Sheet Conexant 100427B3-4 Table 3-1. P5200 UIC Hardware Signal Definitions Label Pin I/O I/O Type Signal Name/Description USB INTERFACE USBP, USBN 151, 152 I/O Iu/Ou USB Port. USBP and USBN are the differential data positive and negative signals of the USB port. Connect USBP and USBN to USB +Data and -Data, respectively, through 10 Ω, and optionally through a quick switch in order to isolate the USBP and USBN from the USB during suspend mode. FCLKIO (GPIO39) 29 I It USB Resume. Active high input used to detect occurrence of USB resume event. USB POWER DETECT INTERFACE USB5V_DET (GPIO22) 150 I It USB 5 V Detect. Active high input used to detect presence of +5 V at the USB connector. CLOCK INTERFACE CLKI 27 I Ith Clock In. Connect to 35.328 MHz voltage controlled crystal oscillator (VCXO) output through 51 Ω. CONTROL INTERFACE HRST# 98 I Ith Reset. Active low input signal to reset the P5200 UIC. Connect to reset circuit. BOPT (GPIO14) 39 I It Boot Option. To boot from internal ROM, leave open. To boot from external ROM, pull down with 4.7k Ω resistor. Leave open. PLLBP 28 I It PLL Ground. Connect to GND through 4.7 kΩ. CX20431 AFE CONTROL AND SERIAL INTERFACE AFE_SCLK 4 I It AFE Clock In. Connect to AFE STROBE through 33 Ω. AFE_STB 7 O Otts4 AFE Strobe Out. Connect to AFE CTRL_STRB. AFE_CTRLIN 10 O Otts4 AFE Control In. Serial digital data sent to the AFE. Connect to AFE CTRL_IN. AFE_CTRLOUT 5 I It AFE Control Out. Serial digital data received from the AFE. Connect to AFE CTRL_OUT. AFE_WAKEUP 6 I Ith AFE Wakeup. DSL Power Management Wakeup Signal from AFE. Connect to AFE WAKEUP. CX11627 ADDP PARALLEL INTERFACE HAD[18:16] 53-55 O Ot4 Address Lines 9-7. Connect to ADDP A[9:7], respectively. HC[07:01] 56, 59-64 O Ot4 Address Lines 6-0. Connect to ADDP A[6:0], respectively. 83-88 I/O It/Ot4 Data Lines 15-00. Connect to ADDP D[15:0], respectively. HC08 96 O Ot4 Read Enable. Active low read enable. When asserted, data is transferred from the selected device onto the data bus. Connect to ADDP RDB. HC09 95 O Ot4 Write Enable. Active low write enable. When asserted, data is transferred from the data bus into the selected device. Connect to ADDP WRB. HC12 (GPIO34) 89 O O ADDP Chip Select. Active low output select ADDP when asserted. Connect to ADDP CSB. IRQ0# (GPIO10) 163 I Itpu ADDP Interrupt Request 1. Active low input asserted to request interrupt servicing by the ADDP. Connect to ADDP IRQ1. IRQ1# (GPIO11) 164 I Itpu ADDP Interrupt Request 2. Active low input asserted to request interrupt servicing by the ADDP. Connect to ADDP IRQ2. PD (GPIO12) 165 O Ot4 ADDP Power Down. Active low output asserted put ADDP in a low power mode. Connect to ADDP PWR_DWN. RST# (GPIO09) 162 O Ot4 ADDP Reset. Active low output resets ADDP when asserted. Connect to ADDP RSTB. SCANMODE (GPIO26) 153 O Ot4 Scan Mode. Connect to ADDP SSCANMODE.

AccessRunner ADSL-USB Modem Device Set Data Sheet 100427B Conexant 3-5 Table 3-1. P5200 UIC Hardware Signal Definitions (Continued) Label Pin I/O I/O Type Signal Name/Description CX11627 ADDP SERIAL CHANNEL INTERFACE RXSOC0 168 I Itpu Receive ATM0 Start of Cell. Connect to ADDP RXSOC0. RCLKAS0 169 I Itpu Receive AS0/ATM0 Data Clock. Connect to ADDP R_CLK_LS0. RDATAS0 167 I Itpu Receive AS0/ATM0 Serial Data. Connect to ADDP R_DAT_LS0. TXSOC0 173 O Otts4 Transmit ATM0 Start of Cell. Connect to ADDP TXSOC0. TCLKLS0 174 I It Transmit LS0/ATM0 Data Clock. Connect to ADDP T_CLK_LS0. TDATLS0 170 O Otts4 Transmit LS0/ATM0 Serial Data. Connect to ADDP T_DAT_LS0. CX20431 AFE AND CX20441 LD CONTROL AFE_RST# (GPIO08) 161 O Ot4 AFE Reset. Active low reset output to the AFE and the LD. Connect to AFE POR# and to LD PWRDWN#. LD_PC (GPIO13) 166 O Ot4 Line Driver Power Control. Optionally, connect to LD PWRDWN# when it is desired to power down only the LD. LINE INTERFACE LD_OH_DET (GPIO05) 156 I It Off-Hook Detect. Active low; indicates POTS off-hook event. Used for G.lite Mode only. Connect to off-hook detector circuit. PAIR_SEL (GPIO21) 3 O Itpu/Ot4 Inner/Outer Pair Select. Connect to wire-pair selection circuit. BCLKIO (GPIO38) 30 O Itpu/Ot4 Receive Pad. Connect to receive pad circuitry in hybrid. SERIAL EEPROM INTERFACE I2C_SCL (GPIO16) 11 O Ot4 Serial EEROM Clock. Connect to EEPROM clock input. I2C_SDA (GPIO15) 12 I Itpu Serial EEROM Data. Connect to EEPROM data line. JTAG INTERFACE TRST# 31 I Itpu JTAG Reset. A high-to-low transition on this signal forces the TAP controller into a logic reset state. This pin has an internal pullup, and it conforms to IEEE 1149.1 JTAG specification. TCK 32 I It JTAG Test Clock. This is the boundary scan clock input signal. This pin has an internal pullup, and it conforms to IEEE 1149.1 JTAG specification. TMS 33 I Itpu JTAG Test Mode Select. This signal controls the operation of the TAP controller. This pin has an internal pull-up, and it conforms to IEEE 1149.1 JTAG specification. TDI 34 I Itpu JTAG Test Input. This signal contains serial data that is shifted in on the rising edge of TCK. The pin has an internal pullup, and it conforms to IEEE 1149.1 JTAG specification. TDO 35 O Otts4 JTAG Test Output Data. This is the three-stateable boundary scan data output signal from the MCU, and it is shifted out on the falling edge of TCK. It conforms to IEEE 1149.1 JTAG specification.

AccessRunner ADSL-USB Modem Device Set Data Sheet Conexant 100427B3-6 Table 3-1. P5200 UIC Hardware Signal Definitions (Continued) Label Pin I/O I/O Type Signal Name/Description SDRAM/SRAM INTERFACE MA[11:00] 132-136, 139-145 O Ot4 Multiplexed Row and Column Address Lines. Connect to SDRAM/SRAM A[11:0], respectively. 116, 119-121 I/O It/Ot4 Data Lines. Connect to SDRAM/SRAM D[15:0], respectively. MB0 149 O Ot4 Bank Address Select 0. Connect to SDRAM/SRAM Bank Address Select 0 input for 8 MB SDRAM; leave open for 2 MB SDRAM. MB1 146 O Ot4 Bank Address Select 1. Connect to SDRAM/SRAM Bank Address Select 1 input. MM1 124 O Ot4 Input/Output Mask 1. Connect to SDRAM/SRAM I/O Mask High input. MM0 125 O Ot4 Input/Output Mask 0. Connect to SDRAM/SRAM I/O Mask Low input. MCLK 122 O Ot4 SDRAM Clock. Connect to SDRAM Clock input. MCKE 123 O Ot4 SDRAM Clock Enable. Active high; enables SDRAM clock. Connect to SDRAM Clock Enable input. MRAS# 126 O Ot4 SDRAM Row Address Strobe. Active low; starts SDRAM access with strobe of row address. Connect to SDRAM RAS input. MCAS# 129 O Ot4 SDRAM Column Address Strobe. Active low; strobes column address and data bytes. Connect to SDRAM CAS input. MWE# 131 O Ot4 SDRAM Memory Write Enable. Active low; indicates write access to SDRAM. Connect to SDRAM Write Enable input. MCS# 130 O Ot4 SDRAM Memory Chip Select. Active low; enables SDRAM command decoder. Connect to SDRAM chip select input. LED INTERFACE LED_RXD (GPIO20) 2O O t 4 Receive Data LED. Illuminated when data is received from the ADSL line. LED_TXD (GPIO19) 176 O Ot4 Transmit Data LED. Illuminated when data is transmitted to the ADSL line. LED_SHOWTIME (GPIO18) 1O O t 4 Showtime LED. Illuminated when the ADSL transceiver is in Showtime Mode. LED_READY (GPIO070) 160 O Ot4 Ready LED. Illuminated when the device is successfully enumerated on the USB. POWER AND GROUND VDD 25, 66, 99, 154 PWR PWR Core Supply Voltage. Connect to +1.8V. VDDA 21 PWR PWR Supply Voltage. Connect to +1.8V through filter. VDDO 8, 16, 37, 47, 57, 71, 81, 91, 107, 117, 127, 137, 147, 158, 171 PWR PWR I/O Supply Voltage. Connect to +3.3V. VGG 23, 101 REF REF I/O Clamp Power Supply. Connect to +5V if available, otherwise connect to +3.3V. VSS 26, 67, 100, 155 GND GND Core Ground. Connect to digital ground. VSSO 9, 17, 38, 48, 58, 72, 82, 92, 108, 118, 128, 138, 148, 159, 172 GND GND I/O Ground. Connect to digital ground. VSSA 22 GND GND Ground. Connect to digital ground.

AccessRunner ADSL-USB Modem Device Set Data Sheet 100427B Conexant 3-7 Table 3-1. P5200 UIC Hardware Signal Definitions (Continued) Label Pin I/O I/O Type Signal Name/Description NOT USED HC10 94 I It Not Used. Connect to GND through 1 KΩ. HAD[29:19] 40-46, 49-52 O Ot4 Address Lines 20-10. If Flash ROM is installed, connect to Flash ROM A[20:10], respectively. If Flash ROM is not installed, leave open. HC00 (GPIO32) 93 O Ot4 Flash ROM Chip Enable. Active low output enables optional Flash ROM when asserted. If Flash ROM is installed, connect to Flash ROM CE#. If Flash ROM is not installed, leave open. FLASH_RST# (GPIO23) 97 O Ot4 Flash ROM Reset. Active low output resets optional Flash ROM when asserted. If Flash ROM is installed, connect to Flash ROM RESET#. If Flash ROM is not installed, leave open. HC11 (GPIO33) 90 I/O It/Ot4 Not Used. Leave open. HAD31 (GPIO37) 69 I/O It/Ot4 Not Used. Leave open. TREQA 36 I Itpd Reserved. This pin is connected to internal circuitry. Leave open. Reserved (GPIO06) 157 I/O Itpu/Ot4 Reserved. This pin is connected to internal circuitry. Leave open. Reserved (GPIO17) 175 I/O Itpu/Ot4 Reserved. This pin is connected to internal circuitry. Leave open. Reserved (GPIO25) 68 I/O Itpu/Ot4 Reserved. This pin is connected to internal circuitry. Leave open. Reserved 13-15, 18-20, 24 Reserved. These pins are connected to internal circuitry. Leave open. NOTES: I/O Types: See Table 3-2. Table 3-2. P5200 UIC Input/Output Type Descriptions I/O Type Description It Digital input, +5V tolerant, C IN = 8 pF It/Ot4 Digital input, +5V tolerant, CIN = 8 pF/Digital output, 4 mA, ZINT = 80 Ω Ith Digital input, +5V tolerant, with hysteresis, C IN = 8 pF Itpd Digital input, +5V tolerant, 75k Ω pull-down, CIN = 8 pF Itpu Digital input, +5V tolerant, 75k Ω pull-up, CIN = 8 pF Itpu/Ot4 Digital input, +5V tolerant, 75k Ω pull-up, CIN = 8 pF/Digital output, 4 mA, ZINT = 80 Ω Otts4 Digital output, 3-State, 4 mA, ZINT =80 Ω Iu/Ou Input, USB receiver/Output, USB driver NOTES: 1. See DC characteristics in Table 3-3. 2. I/O Type corresponds to the device Pad Type. The I/O column in tables refers to signal I/O direction used in the application .

AccessRunner ADSL-USB Modem Device Set Data Sheet Conexant 100427B3-8 P5200 UIC DC electrical characteristics are listed Table 3-3. P5200 UIC operating conditions are specified in Table 3-4. P5200 UIC absolute maximum ratings are stated in Table 3-5. P5200 UIC power consumption is listed in Table 3-6. Table 3-3. P5200 UIC DC Electrical Characteristics Parameter Symbol Min. Typ. Max. Units Test Conditions (see Note 1) Input high voltage VIH 2.0 VGG + 0.5 VDC Input low voltage VIL -0.5 0.8 VDC Input leakage current IIL/IIH -10 10 µA VIN = 0 for Min. VIN = VIN (MAX) for Max. Input leakage current (with internal pull-downs) (See Note 2) IIL/IIH -10 100 µA VIN = 0 for Min. VIN = VIN (MAX) for Max. Input leakage current (with internal pull-ups) (See Note 2) IIL/IIH -100 10 µA VIN = 0 for Min. VIN = VIN (MAX) for Max. Internal pullup/pulldown resistance Rpu/Rpd 50 200 kΩ Output high voltage VOH 2.4 VDDO VDC IOH = 4 mA Output low voltage VOL 0.4 VDC IOL = 4 mA Input/output capacitance CINOUT 3 pF NOTES: 1. Test Conditions (unless otherwise stated): VDDcore = +1.8 ± 0.15 VDC VDDO = +3.3 ± 0.3 VDC; VIN (MAX) = +3.6V for VGG connected to +3.3V; VIN (MAX) = +5.25V for VGG connected to +5V. 2. Current flow out of the device is shown as minus. 3. Stresses above those listed may cause permanent device failure. Functionality at or above these limits is not implied. Expos ure to absolute maximum ratings for extended periods of time may affect device reliability.

AccessRunner ADSL-USB Modem Device Set Data Sheet 100427B Conexant 3-9 Table 3-4. P5200 UIC Operating Conditions Parameter Symbol Min Typ Max Units Core power supply VDD 1.65 1.8 1.95 VDC I/O power supply VDDO 3.0 3.3 3.6 VDC Operating ambient temperature TA 0 70 °C Table 3-5. P5200 UIC Absolute Maximum Ratings Parameter Symbol Min Max Units Core power supply VDD -0.35 2.0 VDC I/O power supply (VDDO = +3.3 V) VDDO -0.35 3.7 VDC I/O power supply (VDDO = +5 V) VDDO -0.35 7.0 VDC Input voltage VIN -0.35 VGG + 0.35* VDC Voltage applied to outputs in high impedance (Off) state VHZ -0.35 VGG + 0.35* VDC Storage temperature TS -55 125 °C * VGG = +3.3 V ± 0.3 V or +5 V ± 0.25 V. Caution: Handling CMOS Devices These devices contain circuitry to protect the inputs against damage due to high static voltages. However, it is advised that normal precautions be taken to avoid application of any voltage higher than maximum rated voltage. An unterminated input can acquire unpredictable voltages through coupling with stray capacitance and internal cross talk. Both power dissipation and device noise immunity degrades. Therefore, all inputs should be connected to an appropriate supply voltage. Input signals should never exceed the voltage range from 0.5V or more negative than GND to 0.5V or more positive than VDD. This prevents forward biasing the input protection diodes and possibly entering a latch up mode due to high current transients. Table 3-6. P5200 UIC Power Consumption Mode Typ. Current (mA) Max. Current (mA) Typ. Power (mW) Max. Power (mW) VDD (+1.8 V) 85 105 155 205 VDDO (+3.3 V) 15 25 45 90 NOTES: 1. Operating voltage: VDD = +1.8 VDC ± 0.15 VDC VDDO = +3.3 VDC ± 0.3 VDC. 2. Test conditions: VDD = +1.8 VDC for typical values; VDD = +1.95 VDC for maximum values. VDDO = +3.3 VDC for typical values; VDDO = +3.6 VDC for maximum values.

AccessRunner ADSL-USB Modem Device Set Data Sheet Conexant 100427B3-10

3.2 CX11627 ADDP Hardware Interface Signals

3.2.1 CX11627 ADDP Hardware Signals, Pin Assignments, and Signal Definitions

CX11627 ADDP hardware interface signals are shown in Figure 3-3. CX11627 ADDP pin assignments are shown in Figure 3-4. CX11627 ADDP hardware interface signals are defined in Table 3-7. Input/output types are described in Table 3-9.

AccessRunner ADSL-USB Modem Device Set Data Sheet 100427B Conexant 3-11 MCLK VCXO_CTRL RXSOC0 R_NCO_AS0 T_CLK_AS1 R_DAT_AS0 TXSOC0 T_CLK_LS0 T_DAT_LS0 RSTB IRQ1 IRQ2 PWR_DN SSCANMODE D00 D01 D02 D03 D04 D05 D06 D07 D08 D09 D10 D11 D12 D13 D14 D15 CSB RDB WRB TLXCK_EN VDDO VDDO VDDO VDDO VDDO VDDO VDDO VDDO VDDO VDDO VDDO VDDO VDDO VDDcore VDDcore VDDcore VDDcore VDDcore VDDcore VDDcore VDDcore VDDcore VDDcore VDDcore VDDcore VDDcore VDDcore VGG VSSO VSSO VSSO VSS VSS VSSO VSSO VSSO VSS VSS VSS VSSO VSS VSS VSS VSSO VSSO VSS VSS VSS VSSO VSSO VSS VSSO VSS VSS VSS VSSO VSSO VSS 102 101 100 127 126 125 124 123 120 119 118 117 116 115 114 113 112 111 104 110 122 132 156 168 176 108 109 134 140 154 155 103 105 106 107 121 131 133 139 151 152 153 167 175 RX00 RX08 TX15 AFE_STRB TEST_START TEST_DONE MON_CLK MON_OUT MON_DONE TX00 TX01 TX02 TX03 TX04 TX05 TX06 TX07 TX08 TX09 TX10 TX11 TX12 TX13 TX14 RX01 RX02 RX03 RX04 RX05 RX06 RX07 RX09 RX10 RX11 RX12 RX13 RX14 RX15 DMCK_ALT T_INTER_BYTEB T_FAST_BYTEB T_CLK_AS0 T_DAT_AS1 T_DAT_AS0 T_DAT_LS1 T_DAT_LS1 BIT_CLOCK TXSOC1 LTR NTR NTRCTL FILTER_CLK DAC_CLK R_INTER_SUPERB R_INTER_DATA R_FAST_SUPERB R_FAST_FRAMEB R_NCO_LS0 R_NCO_LS1 R_NCO_AS1 R_DAT_AS1 R_CLK_LS0 R_CLK_LS1 R_DAT_LS0 R_DAT_LS1 RXSOC1 ADC_CLK CLIPB SCANEN NC NC NC NC NC 129 143 174 157 158 159 160 161 162 163 164 165 166 169 170 171 172 173 130 135 136 137 138 141 142 144 145 146 147 148 149 150 128 100427_F3-03_HIS 11627 176T CX20431 AFE SERIAL INTERFACE CX11627 ADSL DMT Data Pump (ADDP) 176-PIN TQFP P5200 UIC PARALLEL BUS NC CLK OUT CLK CTRL RXSOC0 RCLKAS0 RDATAS0 TXSOC0 TCLKLS0 TDATLS0 RST# (GPIO09) IRQ0 (GPIO10) IRQ1 (GPIO11) PD (GPIO12 SCANMODE HC01 HC02 HC03 HC04 HC05 HC06 HC07 HAD16 HAD17 HAD18 HAD00 HAD01 HAD02 HAD03 HAD04 HAD05 HAD06 HAD07 HAD08 HAD09 HAD10 HAD11 HAD12 HAD13 HAD14 HAD15 HC12 HC08 HC09 +3.3V +2.5V +5V or +3.3V P5200 UIC CONTROL P5200 UIC SERIAL INTERFACE 35. 328 MHZ CLOCK TEST INTERFACE RX0 RX1 TX0 STROBE NC NC NC NC NC MONITOR INTERFACE Figure 3-3. CX11627 ADDP Hardware Interface Signals

AccessRunner ADSL-USB Modem Device Set Data Sheet Conexant 100427B3-12

100427 F3-04 PO-11627-176T

45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 132 131 130 129 128 127 126 125 124 123 122 121 120 119 118 117 116 115 114 113 112 111 110 109 108 107 106 105 104 103 102 101 100 176175174173172171170169168167166165164163162161160159158157156155154153152151150149148147146145144143142141140139138137136135134133 VSSO DAC_CLK FILTER_CLK T_FAST_BYTEB T_INTER_BYTEB T_CLK_AS0 T_DAT_AS0 NTR VSSO VDDO T_CLK_AS1 T_DAT_AS1 T_DAT_LS1 T_DAT_LS1 T_CLK_LS0 T_DAT_LS0 BIT_CLOCK VSSO VSS VSS TXSOC0 TLXCK_EN TXSOC1 AFE_STRB VDDcore VDDcore VDDO VSSO NTRCTL DMCK_ALT R_INTER_SUPERB R_INTER_DATA R_FAST_SUPERB R_FAST_FRAMEB VSSO VDDO R_NCO_LS0 R_NCO_LS1 R_NCO_AS0 R_NCO_AS1 R_DAT_AS0 R_DAT_AS1 NC NC VDDO VSS RX01 RX00 ADC_CLK D00 D01 D02 D03 D04 VDDO VSSO D05 D06 D07 D08 D09 D10 D11 D12 D13 D14 VDDO VDDcore VDDcore VSSO VSS VSS D15 VGG VDDcore VSS WRB VDDO VDDOVSSTX15TX14TX13TX12TX11TX10VDDOVSSOTX09TX08TX07TX06TX05TX04TX03TX02TX01TX00VDDOVDDcoreVDDcoreVSSOVSSVSSRX15RX14RX13RX12RX11RX10RX09RX08RX07RX06VDDcoreVSSRX05RX04RX03RX02VDDcoreVSSO RXSOC0RXSOC1 NC VSSOVSS VDDO SSCAN_MODE TEST_DONE NC TEST_START VDDcoreVDDcoreVDDcore VSSVSSVSSO SCAN_EN VCXO_CTRLMON_DONE MCLKVDDO VDDcoreVDDcore VSSVSSVSSVSSOVDDO MON_OUTMON_CLKPWR_DN NCLTRIRQ2IRQ1CLIPBRSTBRDBCSBVSSO CX11627 Figure 3-4. CX11627 ADDP Pin Signals - 176-Pin TQFP

AccessRunner ADSL-USB Modem Device Set Data Sheet 100427B Conexant 3-13 Table 3-7. CX11627 ADDP Hardware Signal Definitions Signal Name Pin I/O I/O Type Signal Name/Description CLOCK INTERFACE MCLK 68 I I Master Clock In. Connect to 35.328 MHz voltage controlled crystal oscillator (VCXO) output through 51 Ω. VXCO_CTRL 66 O O VCXO Control Out. Oversampled VCXO analog control voltage output. Connect to VCXO control circuit. CX20431 AFE INTERFACE 141, 138-135, 130-129 II Receive Data Lines. In the serial mode of operation, RX8 and RX0 transfer data from the AFE into the ADDP. The negative edge of the AFE_STR# strobe signal from the AFE clocks the data into the ADDP. In the parallel mode of operation, RX[15:0] input data lines transfer receive data into the ADDP. Data is clocked into the ADDP by ADC_CLK. This mode is not used; leave RX[15:9] and RX[7:1] open. TX[15:0] 174-169, 166-157 O O Transmit Data Lines. In the serial mode of operation, TX15 (used as a programmable width serial bus) transfers data to the AFE from the ADDP. The negative edge of the AFE_STR# strobe signal from the AFE clocks the data from the ADDP. In the parallel mode of operation, TX[15:0] output data lines transfer data out of the ADDP. Data is clocked out of the ADDP by DAC_CLK. This mode is not used; leave TX[14:0] open. AFE_STR# I I AFE Strobe. In the serial mode of operation, AFE_STR# from the AFE triggers the transfer of serial transmit data on TX15 from the ADDP to the AFE and triggers the transfer of serial receive data on RX8 and RX0 from the AFE to the ADDP. ADC_CLK 128 O O Receive Clock for Parallel Mode. In the parallel mode of operation, data on RX[15:0] is clocked in to the ADDP by ADC_CLK. Not used; leave open. DAC_CLK 2 O O Transmit Clock for Parallel Mode. In the parallel mode of operation, data on TX[15:0] is clocked out of the ADDP by DAC_CLK. Not used; leave open. FILTER_CLK 3 O O AFE Filter Clock. This signal can be used by the DAC interface block to strobe the external AFE filters. Not use; leave open P5200 UIC PARALLEL INTERFACE 123-127 I/O It/Ot Data Bus. A 16-bit input/output data bus used to send data to the UIC during a read operation or receive data from the UIC during a write operation. Connect to D[15:0] to UIC HAD[15:0], respectively. A[9:0] 91, 94-102 I It Address Bus. A 10-bit input address bus that identifies the location in the ADDP that data on D[15:0] is written to during a write operation, or that data is read from during a read operation for placing on D[15:0]. Connect A[9:7] to UIC HC[18:16], respectively and A[6:0] to UIC HC[07:01], respectively. CS# 87 I It Chip Select. Active low control input selects the ADDP. Connect CS# to UIC HC12. RD# 86 I It Data Read Enable. Active low control input strobes (on the negative edge) data from the addressed location in the ADDP onto D[15:0]. Connect RD# to UIC HC08. WR# 90 I It Data Write Enable. Active low control input strobes (on the negative edge) data on D[15:0] into the ADDP addressed location. Connect WR# to UIC HC09.

AccessRunner ADSL-USB Modem Device Set Data Sheet Conexant 100427B3-14 Table 3-7. CX11627 ADDP Hardware Signal Definitions (Continued) Signal Name Pin I/O I/O Type Signal Name/Description P5200 UIC CONTROL RSTB 85 I I Reset. Active low control input. When asserted, the ADDP is held in a reset state. Connect to UIC RST# (GPIO09). IRQ1 83 O Ot Interrupt Request 1. Active high interrupt asserted to request service by the UIC. Connect to UIC IRQ0 (GPIO10). IRQ2 82 O Ot Interrupt Request 2. Active high interrupt asserted to request service by the UIC. Connect to UIC IRQ1 (GPIO11). PWR_DN 79 I I Power Down. Active high control input When asserted, the ADDP is held in a low power mode. Connect to UIC PD (GPIO12). SSCANMODE 55 I I Scan Mode. Connect to UIC SCANMODE (GPIO26). TLXCK_EN 22 I I LSX Transmit Data Clock Generation Enable. Connect to +3.3V. P5200 UIC SERIAL INTERFACE RXSOC0 45 O O TC0 Block Receive Start of Cell. Connect to UIC RXSOC0. R_DAT_AS0 41 O O Receive Data (AS0). Connect to UIC RDATAS0. R_NCO_AS0 39 O O Receive NCO (AS0). Connect to UIC RCLKAS0. T_CLK_AS1 11 I I Transmit Data Clock (AS1). Connect to ADDP NCO_AS0. T_CLK_LS0 15 I/O I/O Transmit Data Clock (LS0). Connect to UIC TCLKLS0. T_DAT_LS0 12 I I Transmit Data (LS0). Connect to UIC TDATLS0. TXSOC0 21 I I TC0 Block Transmit Start of Cell. Connect to UIC TXSOC0. MONITOR INTERFACE MON_OUT 77 O O Monitor Output. 1-bit serial D/A output used for constellation monitoring. Used for test only; leave open during normal operation. MON_CLK 78 O O Monitor Clock. Serial monitor 138 kHz clock output. Used for test only; leave open during normal operation. MON_DONE 67 O O Monitor Done. New symbol constellation qualifier. Used for test only; leave open during normal operation. POWER AND GROUND VDDcore 25, 26, 59, 60, 61, 70, 71, 93, 108, 109, 134, 140, 154, 155 PP W R Core Circuits Supply Voltage. Connect to +2.5V supply. VDDO 10, 27, 36, 54, 69, 76, 89, 110, 122, 132, 156, 168, 176 PP W R Input/Output Circuits Supply Voltage. Connect to +3.3V supply. VSS 19, 20, 53, 62, 63, 72, 73, 74, 92, 105, 106, 131, 139, 151, 152, 175 GG N D Core Circuits Ground. Connect to digital ground. VSSO 1, 9, 18, 28, 35, 52, 64, 75, 88, 107, 121, 133, 153, 167 GG N D Input/Output Circuits Ground. Connect to digital ground. VGG 103 R R Input Reference Voltage. Reference voltage for +5V tolerant input pins. A connection to +5V allows +5V or +3.3V input levels. A connection to +3.3V allows +3.3V input levels only.

AccessRunner ADSL-USB Modem Device Set Data Sheet 100427B Conexant 3-15 Table 3-7. CX11627 ADDP Hardware Signal Definitions (Continued) Signal Name Pin I/O I/O Type Signal Name/Description NOT USED R_INTER_SUPERB 31 O O Receive Interleaved Data Bit Output Superframe Qualifier. Not used; leave open. R_INTER_DATA 32 O O Receive Interleaved Data Bit Output. Clocked at BIT_CLOCK rate. R_FAST_SUPERB 33 O O Receive Fast Data Bit Output Superframe Qualifier. Not used; leave open. R_FAST_FRAMEB 34 O O Receive Fast Data Bit Output Frame Qualifier. Not used; leave open. R_CLK_LS0 47 I I Receive Data Clock (LS0). Not used; leave open. R_CLK_LS1 49 I I Receive Data Clock (LS1). Not used; leave open. R_DAT_AS1 42 O O Receive Data (AS1). Not used; leave open. R_DAT_LS0 48 O O Receive Data (LS0). Not used; leave open. R_DAT_LS1 50 O O Receive Data (LS1). Not used; leave open. R_NCO_AS1 40 O O Receive NCO (AS1). Not used; leave open. R_NCO_LS0 37 O O Receive NCO (LS0). Not used; leave open. R_NCO_LS1 38 O O Receive NCO (LS1). Not used; leave open. CLIPB 84 O O Clip Interrupt. This status output goes low for one ADC_CLK clock cycle whenever clipping is detected. This signal can be for monitoring incoming data for saturation. Not used; leave open. T_INTER_BYTEB 5 O O Transmit Interleaved Data Bit Input Enable. Not used; leave open. T_FAST_BYTEB 4 O O Transmit Fast Data Bit Input Enable. Not used; leave open. T_CLK_AS0 6 I I Transmit Data Clock (AS1). Not used; leave open. T_DAT_AS1 12 I I Transmit Data (AS1). Not used; leave open. T_DAT_AS0 7 I I Transmit Data (AS0). Not used; leave open. T_CLK_LS1 13 I/O I/O Transmit Data Clock (LS1). Not used; leave open. T_DAT_LS1 14 I I Transmit Data (LS1). Not used; leave open. TXSOC1 21 I I TC1 Block Transmit Start of Cell. Not used; leave open. LTR 81 O O 8 kHz Local Timing Reference. Not used; leave open. NTR 8 I/O I/O 8 kHz Network Timing Reference. Not used; leave open. NTR_CTL 29 I I Network Timing Reference I/O Control. Not used; leave open. BIT_CLOCK 17 O O Serial Data Bit Clock Output. Used to synchronize the serial input and output data bit streams, enables, and superframe qualifiers. Not used; leave open. NOTES: I/O Types: See Table 3-8.

AccessRunner ADSL-USB Modem Device Set Data Sheet Conexant 100427B3-16 Table 3-8. CX11627 ADDP Input/Output Type Descriptions I/O Type Description It Digital input, +5 V tolerant, C IN = 8 pF It/Ot4 Digital input, +5 V tolerant, CIN = 8 pF/Digital output, 4 mA, ZINT = 80 Ω Ith Digital input, +5 V tolerant, with hysteresis, C IN = 8 pF Itpd Digital input, +5 V tolerant, 75k Ω pull-down, CIN = 8 pF Itpu Digital input, +5 V tolerant, 75k Ω pull-up, CIN = 8 pF Itpu/Ot4 Digital input, +5 V tolerant, 75k Ω pull-up, CIN = 8 pF/Digital output, 4 mA, ZINT = 80 Ω Otts4 Digital output, 3-State, 4 mA, ZINT =80 Ω NOTES: 1. See DC characteristics in Table 3-9. 2. I/O Type corresponds to the device Pad Type. The I/O column in tables refers to signal I/O direction used in the application .

AccessRunner ADSL-USB Modem Device Set Data Sheet 100427B Conexant 3-17

3.2.2 CX11627 ADDP Electrical and Environmental Specifications

CX11627 ADDP DC electrical characteristics are listed in Table 3-9. CX11627 ADDP operating conditions are specified in Table 3-10. CX11627 ADDP absolute maximum ratings are stated in Table 3-11. CX11627 ADDP power consumption is listed in Table 3-12. Table 3-9. CX11627 ADDP DC Electrical Characteristics Parameter Symbol Min. Typ. Max. Units Test Conditions (see Note 1) Input high voltage VIH 0.9*VDDO VDDO VDC Input low voltage VIL GND 0.1*VDDO VDC Input leakage current IIL/IIH -10 10 µA Input capacitance CIN 2.9 pF Output high voltage VOH 0.9*VDDO VDDO VDC Output low voltage VOL GND 0.1*VDDO VDC Three-state output leakage ILK 10 10 µA Output capacitance COUT 3.1 pF Three-state output leakage ILK -10 10 µA Input/output capacitance CINOUT 3.9 pF NOTES: 1. Test Conditions (unless otherwise stated): VDDcore = +2.5 ± 0.2 VDC VDDO = +3.3 ± 0.3 VDC; VIN (MAX) = +3.6 for VGG connected to +3.3V; VIN (MAX) = +5.25V for VGG connected to +5V. 2. Current flow out of the device is shown as minus.

AccessRunner ADSL-USB Modem Device Set Data Sheet Conexant 100427B3-18 Table 3-10. CX11627 ADDP Operating Conditions Parameter Symbol Min Typ Max Units Core power supply VDDcore 2.3 2.5 2.7 VDC I/O power supply VDDO 3.0 3.3 3.6 VDC Operating temperature TA 0 +70 °C Table 3-11. CX11627 ADDP Absolute Maximum Ratings Parameter Symbol Min Max Units Core power supply VDDcore -0.35 2.8 VDC I/O power supply VDDO -0.35 3.7 VDC Input voltage VIN -0.3 VDD + 0.3 VDC Storage temperature TS -65 150 °C Table 3-12. CX11627 ADDP Power Consumption Mode Typ. Current (mA) Max. Current (mA) Typ. Power (mW) Max. Power (mW) VDDcore (+2.5 V) 190 210 475 570 VDDO (+3.3 V) 35 65 115 235 NOTES: 1. Operating voltage: VDDcore = +2.5 VDC ± 0.2 VDC VDDO = +3.3 VDC ± 0.3 VDC. 2. Test conditions: VDDcore = +2.5 VDC for typical values; VDDcore = +2.7 VDC for maximum values. VDDO = +3.3 VDC for typical values; VDDO = +3.6 VDC for maximum values

AccessRunner ADSL-USB Modem Device Set Data Sheet 100427B Conexant 3-19

3.3 CX20431 AFE Hardware Interface Signals

3.3.1 CX20431 AFE Hardware Signals, Pin Assignments, and Signal Definitions

CX20431 AFE hardware interface signals are shown in Figure 3-5. CX20431 AFE pin assignments are shown in Figure 3-6. CX20431 AFE hardware interface signals are defined in Table 3-13. DC characteristics are listed in Table 3-15. CLKIN CTRL_STRB CTRL_IN CTRL_OUT WAKEUP POR RX0 RX1 TX0 STROBE DVDD AVDD AVDD AVSS AVSS DVSS DVSS DVSS INP_HYBR_RX INM_HYBR_RX OUTP_TX OUTM_TX VREFP VC VREFM RBIAS INP_RX INM_RX NC NC NC NC 100427_F3-05_HIS 20431 32T HYBRID CX20431 ANALOG FRONT END (AFE) 32-PIN TQFP P5200 UIC CX11627 ADDP +3.3V +3.3V through filter 0.1u F uF 0.1u F uF 0.1u F uF 30K NC CX20441 LDINP_DRV INM_DRV AFE_SCLK AFE_STB AFE_CTRLIN AFE_CTRLOUT AFE_WAKEUP AFE_RST# RX00 RX08 TX00 AFE_STRB Figure 3-5. CX20431 AFE Hardware Interface Signals 100427_F3-06 PO_20431_32T 9 10 11 12 13 14 15 16 32 31 30 29 28 27 26 25 INP_HYBR_RX INM_HYBR_RX INP_RX INM_RX AVDD AVSS OUTP_TX OUTM_TX RX0 RX1 TX0 DVDD NC STROBE WAKEUP CTRL_OUT AVDDAVSSCLKIN NCPORDVSS CTRL_STRB CTRL_IN RBIASVREFMVCVREFPNCDVSSNCDVSS CX20431 Figure 3-6. CX20431 AFE Pin Signals - 32-Pin TQFP

AccessRunner ADSL-USB Modem Device Set Data Sheet Conexant 100427B3-20 Table 3-13. CX20431 AFE Hardware Signal Definitions Signal Name Pin I/O I/O Type Signal Name/Description CLOCK INTERFACE CLKIN 11 I It Clock In. Connect to 35.328 MHz voltage controlled crystal oscillator (VCXO) output through 51 Ω. P5200 UIC CONTROL AND CX11627 ADDP SERIAL INTERFACE CTRL_STRB 15 I It Strobe In. Strobe input for the control interface. Connect to UIC AFE_STB. CTRL_IN 16 I It Control In. Serial digital data received from the UIC. Connect to UIC AFE_CTRLIN. CTRL_OUT 17 O Ot Control Out. Serial digital data sent to the UIC. Connect to UIC AFE_CTRLOUT. WAKEUP 18 O Ot Wakeup. Digital output for tone detection mode. Connect to UIC AFE_WAKEUP. POR# 13 I It Reset. Active low power-On reset. Connect to UIC AFE_RST#. P5200 UIC CONTROL AND CX11627 ADDP SERIAL INTERFACE STROBE 19 O Ot Strobe. Strobe output for the data interface. The negative STROBE edge triggers the transfer of serial transmit data on TX0 from the ADDP to the AFE and triggers the transfer of serial receive data on RX0 and RX1 from the AFE to the ADDP. Connect to ADDP AFE_STRB and to UIC AFE_SCLK. CX11627 ADDP SERIAL INTERFACE RX0 24 O Ot Receive Data. Digital receive serial data output on RX0 is transferred to the ADDP. The negative edge of the STROBE signal from the AFE clocks the data into the ADDP. Connect to ADDP AFE_RX00. RX1 23 O Ot Receive Data. Digital receive serial data output on RX1 is transferred data to the ADDP. The negative edge of the STROBE signal from the AFE clocks the data into the ADDP. Connect to ADDP AFE_RX08. TX0 22 I It Transmit Data. Digital transmit serial data input on TX0 is transferred from the ADDP. The negative edge of the STROBE signal clocks the data from the ADDP. Connect to ADDP AFE_TX00. HYBRID INTERFACE INP_HYBR_RX 1 I Ia Receive Input Positive from Hybrid. Receive input positive from the hybrid circuit. AC couple through 1 µF. INM_HYBR_RX 2 I Ia Receive Input Negative from Hybrid. Receive input negative from the hybrid circuit. AC couple through 1 µF. CX20441 LINE DRIVER INTERFACE OUTP_TX 7 O Oa Transmit Output Positive. Transmit output positive to the LD. Connect to LD INP_DRV. OUTM_TX 8 O Oa Transmit Output Negative. Transmit output negative to the LD. Connect to LD INM_DRV. POWER AND GROUND VREFP 29 REF REF Analog Reference Voltage (+2.5V). Connect to GND through 10 µF and 0.1 µF in parallel. VC 30 REF REF Analog Reference Voltage (+1.5V). Connect to GND through 10 µF and 0.1 µF in parallel. VREFM 31 REF REF Analog Reference Voltage (+0.5V). Connect to GND through 10 µF and 0.1 µF in parallel. RBIAS 32 REF REF Analog Current Reference. Current setting external resistor. Connect to GND through 30 kΩ resistor (+1%). DVDD 21 PWR PWR Digital Circuits Supply. Connect to +3.3V. AVDD 5, 9 PWR PWR Analog Circuits Supply Voltage. Connect to +3.3V through filter. DVSS 14, 25, 27 GND GND Digital Circuits Ground. Connect to GND. AVSS 6, 10 AGND AGND Analog Circuit Ground. Connect to GND.

AccessRunner ADSL-USB Modem Device Set Data Sheet 100427B Conexant 3-21 Table 3-3. CX20431 AFE Hardware Signal Definitions (Continued) Signal Name Pin I/O I/O Type Signal Name/Description NOT USED INP_RX 3 I Ia Receive Input Positive. Not used. Leave open. INM_RX 4 I Ia Receive Input Negative. Not used. Leave open. NC 12, 20, 26, 28 No Connect. These pins are not connected to internal circuitry. NOTES: I/O Types: See Table 3-15. Table 3-14. CX20431 AFE Input/Output Type Descriptions I/O Type Description Ia Analog input It Digital input, +5V tolerant, C IN = 8 pF It/Ot4 Digital input, +5V tolerant, CIN = 8 pF/Digital output, 4 mA, ZINT = 80 Ω Ith Digital input, +5V tolerant, with hysteresis, C IN = 8 pF Itpd Digital input, +5V tolerant, 75k Ω pull-down, CIN = 8 pF Itpu Digital input, +5V tolerant, 75k Ω pull-up, CIN = 8 pF Itpu/Ot4 Digital input, +5V tolerant, 75k Ω pull-up, CIN = 8 pF/Digital output, 4 mA, ZINT = 80 Ω Oa Analog Output Otts4 Digital output, 3-State, 4 mA, ZINT =80 Ω NOTES: 1. See DC characteristics in Table 3-15 and analog electrical characteristics in Table 3-16. 2. I/O Type corresponds to the device Pad Type. The I/O column in tables refers to signal I/O direction used in the application .

AccessRunner ADSL-USB Modem Device Set Data Sheet Conexant 100427B3-22

3.3.2 CX20431 AFE Electrical and Environmental Specifications

CX20431 AFE DC electrical characteristics are listed Table 3-15. CX20431 AFE analog electrical characteristics are listed Table 3-16. CX20431 AFE operating conditions are specified in Table 3-17. CX20431 AFE absolute maximum ratings are stated in Table 3-18. CX20431 AFE power consumption is listed in Table 3-19. Table 3-15. CX20431 AFE DC Electrical Characteristics Parameter Symbol Min. Typ. Max. Units Test Conditions (see Note 1) Input high voltage VIH 0.65*VDD VDD+0.35 VDC Input low voltage VIL -0.35 0.25*VDD VDC Input leakage current IIL -10 10 µA Output high voltage VOH 0.85*VDD VDD VDC Output low voltage VOL 0 0.1*VDD VDC Output leakage current IOLK 10 10 µA NOTES: 1. Test Conditions (unless otherwise stated): DVDD and AVDD = +5.0 ± 0.25 VDC VIN (MAX) = +5.25V 2. Current flow out of the device is shown as minus. Table 3-16. CX20431 AFE Analog Electrical Characteristics Parameter Min Typ Max Units Receive Path Differential input amplitude of in-band signal 2 Vp Differential input amplitude of echo 2.1 Vp Input-referred noise density in 170 kHz – 1104 kHz, gain = 27 dB 15 20 nV/sqrt (Hz) Input-referred noise density in 170 kHz – 1104 kHz, gain = 0 dB 150 nV/sqrt (Hz) Intermodulation product falling in the downstream band, from an echo tone with an in band signal, gain = 27 dB -80 dBFS Intermodulation product falling in the downstream band, from 2 in band tones, gain = 0 dB -80 dBFS In-band ripple 1.5 dB Input resistance (single-ended) 85 kΩ Input capacitance (single-ended) 90 pF Transmit Path Differential output amplitude 2 Vp Output-referred noise density in 25 kHz – 132 kHz 250 300 nV/sqrt (Hz) Output-referred noise density in 170 kHz – 1104 kHz 20 nV/sqrt (Hz) Intermodulation product from 2 in band tones -80 dBV In-band ripple 1.25 dB Output resistive load (single-ended) 5 20 kΩ Output capacitive load (single-ended) 20 pF

AccessRunner ADSL-USB Modem Device Set Data Sheet 100427B Conexant 3-23 Table 3-17. CX20431 AFE Operating Conditions Parameter Symbol Min Typ Max Units Power supply DVDD and AVDD 3.135 3.3 3.465 VDC Operating ambient temperature TA 0 70 °C Table 3-18. CX20431 AFE Absolute Maximum Ratings Parameter Symbol Min Max Units Power supply DVDD and AVDD -0.35 3.6 VDC Digital input voltage VIN -0.35 DVDD +0.35 VDC Analog input voltage VIN -0.35 AVDD +0.35 VDC Storage temperature TS -65 150 °C Table 3-19. CX20431 AFE Power Consumption Mode Typ. Current (mA) Max. Current (mA) Typ. Power (mW) Max. Power (mW) DVDD 25 83 AVDD 40.5 134 NOTES: 3. Operating voltage: DVDD and AVDD = +3.3 VDC ± 0.165 VDC. 4. Test conditions: DVDD and AVDD = +3.3 VDC for typical values; DVDDO and AVDD = +3.465 VDC for maximum values.

AccessRunner ADSL-USB Modem Device Set Data Sheet Conexant 100427B3-24

3.4 CX20441 LD Hardware Interface Signals

3.4.1 CX20441 LD Hardware Signals, Pin Assignments, and Signal Definitions

CX20441 LD hardware interface signals are shown in Figure 3-7. CX20441 LD pin assignments are shown in Figure 3-8. CX20441 LD hardware interface signals are defined in Table 3-20.

AccessRunner ADSL-USB Modem Device Set Data Sheet Conexant 100427B3-26 Table 3-20. CX20441 LD Hardware Signal Definitions Signal Name Pin I/O I/O Type Signal Name/Description P5200 UIC INTERFACE PWRDWN# 5 I It Power Down. Active low power down control input. Connect to UIC AFE_RST# CX20431 AFE INTERFACE INP_DRV 23 I Ia Input Driver Positive. Transmit driver input positive from the AFE. Connect to AFE OUTP_TX through 1 µF. INM_DRV 2 I Ia Input Driver Negative. Transmit driver input negative input from the AFE. Connect to AFE OUTM_TX through 1 µF. HYBRID INTERFACE OUTP_DRV 18 O Oa Output Driver Positive. Transmit driver output positive to the hybrid circuit. Imax = 280 mA. OUTM_DRV 7 O Oa Output Driver Negative Transmit driver output negative to the hybrid circuit. Imax = 280 mA. MISCELLANEOUS RBIAS 4 REF REF Bias. Current setting external resistor. Connect to GND through 124 kΩ resistor (+1%). POWER AND GROUND AVDD 6, 19 PWR PWR Analog Power. Connect to +5V through filter. AVSS 8, 17 GND GND Analog Ground. Connect to GND. NO CONNECT 24-32 No Connect. These pins are not connected to internal circuitry. NOTES: I/O Types: See Table 3-21. Table 3-21. CX20441 LD Input/Output Type Descriptions I/O Type Description It Digital input, +5V tolerant, C IN = 8 pF Ia Analog input Oa Analog output NOTES: 1. See analog electrical characteristics in Table 3-22. 2. I/O Type corresponds to the device Pad Type. The I/O column in tables refers to signal I/O direction used in the application .

AccessRunner ADSL-USB Modem Device Set Data Sheet 100427B Conexant 3-27

3.4.2 CX20441 LD Electrical and Environmental Specifications

CX20441 LD analog electrical characteristics are listed Table 3-22. CX20441 LD operating conditions are specified in Table 3-23. CX20441 LD absolute maximum ratings are stated in Table 3-24. CX20441 LD power consumption is listed in Table 3-25. Table 3-22. CX20441 LD Analog Electrical Characteristics Parameter Min Typ Max Units Differential output amplitude 4.485 Vp Differential input amplitude 2.0 Vp Input signal bandwidth 25..132 kHz Input referred noise density in 170 kHz – 1104 kHz 5 10 nV/sqrt (Hz) Input referred noise density beyond 1104 kHz 270 nV/sqrt (Hz) Intermodulation product falling in the downstream band from two in-band tones (100 kHz and 120 kHz) -75 dBV Differential gain 7.014 dB In-band ripple 0.05 dB Input capacitance (single-ended) 15 PF Input resistance (single-ended) 20 kΩ Output capacitance (single-ended) 10 pF Output resistive load (single-ended) 18.36 Ω Table 3-23. CX20441 LD Operating Conditions Parameter Symbol Min Typ Max Units Power supply AVDD 4.75 5 5.25 VDC Operating ambient temperature TA 0 70 °C Table 3-24. CX20441 LD Absolute Maximum Ratings Parameter Symbol Min Max Units Power supply AVDD -0.35 7 VDC Digital input voltage VIN -0.35 AVDD + 0.35 VDC Analog input voltage VIN -0.35 AVDD + 0.35 VDC Storage temperature TS -65 150 °C Table 3-25. CX20441 LD Power Consumption Mode Typ. Current (mA) Max. Current (mA) Typ. Power (mW) Max. Power (mW) AVDD 18 24 90 126 NOTES: 1. Operating voltage: AVDD = +5.0 VDC ± 0.25 VDC. 2. Test conditions: AVDD = +5.0 VDC for typical values; AVDD = +5.25 VDC for maximum values; modem in Showtime mode.

AccessRunner ADSL-USB Modem Device Set Data Sheet Conexant 100427B3-28 This page is intentionally blank.

AccessRunner ADSL-USB Modem Device Set Data Sheet 100427B Conexant 4-1 4. USB General Operation

4.1 Descriptors

USB devices report their attributes using descriptors. A descriptor is a data structure with a defined format, which begins wit h a byte-wide field that contains the total number of bytes in the descriptor followed by a byte-wide field that identifies the descriptor type. Class and vendor specific descriptors may be returned in one of two ways. Class and vendor specific descriptors that are related to standard descriptors are returned in the same data buffer as the standard descriptor. If a class or vendor specific descriptor is not related to a standard descriptor, it is returned using class or vendor specific requests.

4.1.1 Device Descriptor

A device descriptor describes general information about a USB device, which applies globally to the device and all of the device’s configurations (Table 4-1). A USB device has only one device descriptor. Vendor ID, Product ID, and Device Release Number can be changed. The Manufacturer Name, Product Name, and Serial Number can also be customized.

AccessRunner ADSL-USB Modem Device Set Data Sheet Conexant 100427B4-2 Table 4-1. Device Descriptors Offset Field Size Value Default (Hex.)

Description

0 bLength 1 Number 12 Size of this descriptor in bytes. 1 bDescriptorType 1 Constant 01 DEVICE Descriptor Type. 2 bcdUSB 2 BCD 0110 USB Specification Release Number in Binary-Coded Decimal (i.e., 2.10 is 0x210). This field identifies the release of the USB Specification that the device and its descriptors are compliant with. 4 bDeviceClass 1 Class 00 Class code (assigned by USB). If this field is reset to 0, each interface within a configuration specifies its own class information and the various interfaces operate independently. If this field is set to a value between 1 and 0xFE, the device supports different class specifications on different interfaces and the interfaces may not operate independently. This value identifies the class definition used for the aggregate interfaces. (For example, a CD-ROM device with audio and digital data interfaces that require transport control to eject CDs or start them spinning.) If this field is set to 0xFF, the device class is vendor specific. 5 bDeviceSubClass 1 SubClass 00 Subclass code (assigned by USB). These codes are qualified by the value of the bDeviceClass field. If the bDeviceClass field is reset to 0, this field must also be reset to If the bDeviceClass field is not set to 0xFF, all values are reserved for assignment by USB. 6 bDeviceProtocol 1 Protocol 00 Protocol code (assigned by USB). These codes are qualified by the value of the bDeviceClass and the bDeviceSubClass fields. If a device supports class-specific protocols on a device basis as opposed to an interface basis, this code identifies the protocols that the device uses as defined by the specification of the device class. If this field is reset to 0, the device does not use class specific protocols on a device basis. However, it may use class specific protocols on an interface basis. If this field is set to 0xFF, the device uses a vendor specific protocol on a device basis. 7 bMaxPacketSize0 1 Number 40 Maximum packet size for endpoint zero (only 8, 16, 32, or 64 are valid). 8 idVendor 2 ID 0572 Vendor ID (assigned by USB). 10 idProduct 2 ID CAFE Product ID (assigned by the manufacturer). 12 bcdDevice 2 BCD 0001 Device release number in binary-coded decimal. 14 iManufacturer 1 Index 01 Index of string descriptor describing manufacturer. 15 iProduct 1 Index 02 Index of string descriptor describing product. 16 iSerialNumber 1 Index 03 Index of string descriptor describing the device’s serial number. 17 bNumConfigurations 1 Number 01 Number of possible configurations.

AccessRunner ADSL-USB Modem Device Set Data Sheet 100427B Conexant 4-3

4.1.2 Configuration Descriptor

A configuration descriptor describes information about a specific device configuration (see Table 4-2). The descriptor describes the number of interfaces provided by the configuration. Table 4-2. Configuration Descriptors Offset Field Size Value Default (Hex.) 0 bLength 1 Number 09 Size of this descriptor in bytes. 1 bDescriptorType 1 Constant 02 CONFIGURATION. 2 wTotalLength 2 Number 0043 Total length of data returned for this configuration. Includes the combined length of all descriptors (configuration, interface, endpoint, and class or vendor specific) returned for this configuration. 4 bNumInterfaces 1 Number 01 Number of interfaces supported by this configuration. 5 bConfigurationValue 1 Number 01 Value to use as an argument to Set Configuration to select this configuration. 6 iConfiguration 1 Index 00 Index of string descriptor describing this configuration. 7 bmAttributes 1 Bitmap A0 Configuration characteristics D7 Bus Powered D6 Self Powered D5 Remote Wakeup D4..0 Reserved (reset to 0) A device configuration that uses power from the bus and a local source sets both D7 and D6. The actual power source at runtime may be determined using the Get Status device request. If a device configuration supports remote wakeup, D5 is set to 1.

8 MaxPower 1 mA FA Maximum power consumption of USB device from the bus in this

specific configuration when the device is fully operational. Expressed in 2 mA units (i.e., 50 = 100 mA). Note: A device configuration reports whether the configuration is bus-powered or self-powered. Device status reports whether the device is currently self-powered. If a device is disconnected from its external power source, it updates device status to indicate that it is no longer self-powered. A device may not increase its power draw from the bus, when it loses its external power source, beyond the amount reported by its configuration. If a device can continue to operate when disconnected from its external power source, it continues to do so. If the device cannot continue to operate, it fails operations it can no longer support. Host software may determine the cause of the failure by checking the status and noting the loss of the device’s power source.

AccessRunner ADSL-USB Modem Device Set Data Sheet Conexant 100427B4-4

4.1.3 Interface Descriptor

An interface descriptor describes a specific interface provided by the associated configuration (see Table 4-3). It is always returned as part of a configuration descriptor. An interface descriptor never includes endpoint zero in the number of endpoints. Table 4-3. Interface Descriptors Offset Field Size Value Default (Hex.) 0 bLength 1 Number 09 Size of this descriptor in bytes. 1 bDescriptorType 1 Constant 04 INTERFACE Descriptor Type. 2 bInterfaceNumber 1 Number 00 Number of interface. Zero-based value identifying the index in the array of concurrent interfaces supported by this configuration. 3 bAlternateSetting 1 Number 00 Value used to select alternate setting for the interface identified in the prior field. 4 bNumEndpoints 1 Number 07 Number of endpoints used by this interface (excluding endpoint zero). If this value is 0, this interface only uses endpoint zero. 5 bInterfaceClass 1 Class 00 Class code (assigned by USB). If this field is reset to 0, the interface does not belong to any USB specified device class. If this field is set to 0xFF, the interface class is vendor specific. All other values are reserved for assignment by USB. 6 bInterfaceSubClass 1 SubClass 00 Subclass code (assigned by USB). These codes are qualified by the value of the bInterfaceClass field. If the bInterfaceClass field is reset to 0, this field must also be reset to 0. If the bInterfaceClass field is not set to 0xFF, all values are reserved for assignment by USB. 7 bInterfaceProtocol 1 Protocol 00 Protocol code (assigned by USB). These codes are qualified by the value of the bInterfaceClass and the bInterfaceSubClass fields. If an interface supports class-specific requests, this code identifies the protocols that the device uses as defined by the specification of the device class. If this field is reset to 0, the device does not use a class specific protocol on this interface. If this field is set to 0xFF, the device uses a vendor specific protocol for this interface. 8 iInterface 1 Index 00 Index of string descriptor describing this interface.

AccessRunner ADSL-USB Modem Device Set Data Sheet 100427B Conexant 4-5

4.1.4 Endpoint Descriptor

Each endpoint used for an interface has its own descriptor, which contains the information required by the host to determine the bandwidth requirements of each endpoint (see Table 4-4). An endpoint descriptor, like an Interface Descriptor, is always returned as part of a configuration descriptor. The default values are: Bulk In 1: 07058102400000 Bulk Out 1: 07050102400000 Bulk In 2: 07058202400000 Bulk Out 2: 07050202400000 Bulk In 3: 07058302400000 Bulk Out 3: 07050302400000 Bulk In 4: 07058402400000 Bulk Out 4: 07050402400000 Table 4-4. Endpoint Descriptors Offset Field Size Value Description 0 bLength 1 Number Size of this descriptor in bytes. 1 bDescriptorType 1 Constant ENDPOINT Descriptor Type. 2 bEndpointAddress 1 Endpoint The address of the endpoint on the USB device described by this descriptor. The address is encoded as follows: Bit 0..3: The endpoint number Bit 4..6: Reserved, reset to 0 Bit 7: Direction, ignored for control endpoints

0 OUT endpoint

1 IN endpoint

3 bmAttributes 1 Bit Map This field describes the endpoint’s attributes when it is configured using the bConfigurationValue. Bit 0..1: Transfer Type

00 Control

01 Isochronous

10 Bulk

11 Interrupt

All other bits are reserved 4 wMaxPacketSize 2 Number Maximum packet size this endpoint is capable of sending or receiving when this configuration is selected. For isochronous endpoints, this value is used to reserve the bus time in the schedule, required for the per frame data payloads. The pipe may, on an ongoing basis, actually use less bandwidth than that reserved. The device reports, if necessary, the actual bandwidth used via its normal, non-USB defined mechanisms. For interrupt, bulk, and control endpoints smaller data payloads may be sent, but will terminate the transfer and may or may not require intervention to restart. Refer to Chapter 5 for more information. 6 bInterval 1 Number Interval for polling endpoint for data transfers. Expressed in milliseconds. This field is ignored for bulk and control endpoints. For isochronous endpoints this field must be set to 1. For interrupt endpoints, this field may range from 1 to 255.

AccessRunner ADSL-USB Modem Device Set Data Sheet Conexant 100427B4-6

4.1.5 Enumeration

The enumeration process consists of the following steps: 1. Get device descriptor. The host requests and reads the device descriptor to determine maximum packet size. 2. Set address. The host sends the function address in a data packet using function endpoint 0. Device firmware interprets this data. 3. Get device descriptor. The host requests and reads the device descriptor to determine such information as device class, USB Specification compliance level, maximum packet size for endpoint 0, vendor id, product id. Etc. 4. Get configuration descriptor. The host requests and reads the device configuration descriptor to determine such information as the number of interfaces and endpoints; endpoint transfer type, packet size, and direction; power source ;maximum power; etc. When the host requests the configuration descriptor, all related interface and endpoint descriptors are returned. 5. Set configuration. The host assigns a configuration value to the device to establish the current configuration.

4.1.6 Endpoint Pairs

Data transfers with the host are made to/from endpoint pairs on the USB module. The five function endpoint pairs are listed in Table 4-5. Table 4-5. Endpoint Pairs Endpoint Pair Max. Packet Size Max. Packet Size USB Data Transfer Types Function Endpoint 0 64 bytes 64 bytes Control Function Endpoint 1 64 bytes 64 bytes Bulk Function Endpoint 2 64 bytes 64 bytes Bulk Function Endpoint 3 64 bytes 64 bytes Bulk Function Endpoint 4 64 bytes 64 bytes Bulk

4.1.7 Language ID Table

See Language ID data in Table 4-6. Table 4-6. Language ID Table Offset Field Size Value Default (Hex.) 0 bLength 1 Number 04 Size of this descriptor in bytes. 1 bDescriptorType 1 Constant 03 INTERFACE Descriptor Type. 2 2 Number 0409

4.1.8 Manufacturer String Table

See Manufacturer String data in Table 4-7. Table 4-7. Manufacturer String Table Offset Field Size Value Default (Hex.) 0 bLength 1 Number 04 Size of this descriptor in bytes. 1 bDescriptorType 1 Constant 03 INTERFACE Descriptor Type. 22 0 0 '-' Manufacturer string, in unicode

AccessRunner ADSL-USB Modem Device Set Data Sheet 100427B Conexant 4-7

4.1.9 Product ID String Table

See Product ID String data in Table 4-8. Table 4-8. Product ID String Table Offset Field Size Value Default (Hex.) 0 bLength 1 Number 1E Size of this descriptor in bytes. 1 bDescriptorType 1 Constant 03 INTERFACE Descriptor Type. 22 8 0 0 'A' 'D' 'S' 'L' ' ' 'U' 'S' 'B' ' ' 'M' 'O' 'D' 'E' 'M' Product ID string, in unicode

AccessRunner ADSL-USB Modem Device Set Data Sheet Conexant 100427B4-8

4.1.10 Serial Number String Table

See Serial Number String data in Table 4-9. Table 4-9. Serial Number String Table Offset Field Size Value Default (Hex.) 0 bLength 1 Number 12 Size of this descriptor in bytes. 1 bDescriptorType 1 Constant 03 INTERFACE Descriptor Type. 21 6 F F FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF Serial number string, in unicode. A serial number string that is all FF will cause the firmware to generate a pseudorandom serial number string.

AccessRunner ADSL-USB Modem Device Set Data Sheet 100427B Conexant 5-1 5. Package Dimensions The package dimensions are shown in Figure 5-1 (176-pin TQFP) and Figure 5-2 (32-pin TQFP). DETAIL A COPLANARITY = 0.08 MAX. 0.60 +0.15, -0.10 0.14 ± .03 16.00 ± 0.15 16.00 ± 0.15 14.00 ± 0.05

12.00 REF

14.00 ± 0.05 PIN 1 REF 13.87 ± 0.05 14.00 ± 0.05

1.00 REF

1.00 ± .05

0.50 REF

13.87 ± 0.05 14.00 ± 0.05 0.500 BSC 0.22 ± 0.05 Ref. 100-PIN TQFP (GP00-D530) PD-TQFP-100-D530 (032699)DETAIL A 0.10 ± .05 Figure 5-1. Package Dimensions - 176-Pin TQFP

AccessRunner ADSL-USB Modem Device Set Data Sheet Conexant 100427B5-2 DETAIL A c L A Millimeters 0.05 8.75 0.5 0.30 0.13

1.6 MAX

0.15

1.4 REF

9.25

7.0 REF

5.6 REF

0.75

1.0 REF

0.80 BSC

0.40 0.19

0.10 MAX

0.0020 0.3445 0.0197 0.0118 0.0051 A D L e b c Coplanarity Min. Max. Min. Max. Inches* Dim. Ref: 32-PIN TQFP (GP00-D262) * Metric values (millimeters) should be used for PCB layout. English values (inches) are converted from metric values and may include round-off errors.

0.0630 MAX

0.0059

0.0551 REF

0.3642

0.2756 REF

0.2205 REF

0.0295

0.0394 REF

0.0315 BSC

0.0157 0.0075

0.004 MAX

PD-TQFP-32 (040395) DETAIL A e b D D2D1 D PIN 1 REF Figure 5-2. Package Dimensions - 32-Pin TQFP

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