AT78C1501 ATMEL | Alldatasheet
Document overview
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Technical content
Features
- Host Interface – ATAPI Compatible (ANSI ATA-1, ATA-2, ATA-3 and ATA-4 compliant) Host Mode – Ultra DMA Support (66 MB/sec) – High-current (12 mA) Drivers for Direct Connection to AT Cable (slew rate controlled) – 256-byte Bidirectional Data FIFO to Improve Throughput
- Embedded Processor – ARM7TDMI™RISC Processor – Open Processor Architecture Protects Firmware Investment – Wide Selection of Development Tools from ARM® and Third-party Vendors – 1-Mbyte External Flash Interface for Code/Data – 16-Kbyte Internal SRAM for Data
- Buffer Manager – Supports SDRAM up to 32 Mbytes (16M x 16) – DRAM Bandwidth of up to 160 Mbytes/sec (burst) – Priority Buffer Arbiter
- Read Channel Interface – Nibble Interface Speed (code cell rate): 40 MHz (160 Mbs, DVD 5X) – EFM (8/14) and EFM+ (8/16) Demodulation
- Write Channel Interface – Serial Interface Speed (code cell rate): DVD 2X – EFM (8/14) and EFM+ (8/16) Modulation – DVD-R Pre-pit Decoder with Error Detection and Correction – DVD+RW ADIP Decoder with Error Detection and Correction – CD-R/RW ATIP Decoder with Error Detection
- Error Correction Logic – DVD Data Block Error Detection and Correction – DVD EDC Error Detection – DVD IEC Header Error Detection and Correction – All CD Formats
- Lower Power Operation with 3.3V Core and 5V Tolerant I/Os
Description
The Atmel AT78C1501 is a high-performance DVD/CD ATAPI Ultra DMA66 Interface Controller, designed to interface to the AT78C1502 DVD Servo Controller, the AT78C1503 DVD Read Channel and the AT78C1504 Automatic Laser Power Control (ALPC). The interface controller (AT78C1501) contains ARM® and AVR® microcontrol- lers, buffer management, error correction code (ECC) and encoder/decoder (ENDEC) for DVD and CD. Also included are a writeable control store for timing generation and an on-board frequency synthesizer to generate system frequencies from one crystal. ATA66/ATAPI66 and I2S interfaces are provided. The major functions of the AT78C1501 include data format encoding/decoding, error detection/correction, buffer management, ATAPI host interface and serial interface master. The AT78C1501 also includes an embedded ARM7 RISC Core to perform all system (drive) microprocessor functions and an embedded AVR RISC core to perform internal data path and buffer management control. The AT78C1501 disk formats include DVD-ROM, DVD-RAM (Read/Write), CD-ROM, CD-R (Read/Write), CD-RW (Read/Write), DVD-R (Read/Write), DVD-RW (Read/Write), and DVD+RW (Read/Write). DVD/CD ATAPI Controller AT78C1501 Rev. 2049A–DVD–07/02
Figure 1. DVD System Block Diagram
- Values listed are advance information and are likely to change as production silicon is characterized.
Table 1. DC Parameters
Figure 2. Pin Assignment
Table 1. General I/O Pin List cells in BIST mode for test. the clock input to the servo chip. System FSN VCC: This is the power supply pin for the system frequency synthesizer. Host FSN VCCc: This is the power supply pin for the host frequency synthesizer. Host FSN Loop Filter: This signal is the loop filter pin for the host frequency synthesizer. Audio FSN Loop Filter: This signal is the loop filter pin for the audio frequency synthesizer.
Table 2. ATAPI Interface I/O Pin List Device Chip Select 0: Chip select signal from host to select the Command Block registers. Device Chip Select 1: Chip select signal from host to select the Command Block registers. bits are used for 8-bit register transfers. Data transfers are 16 bits wide. is active or that Device 1 is present. register or data port in the device. negating DMARQ and reasserting DMARQ, if there is more data to transfer. Device Interrupt: This signal is used by the selected device to interrupt the host system. INTRQ signal shall be in a high impedance state.
data in bursts. The host may negate HDMARDY- to pause an Ultra DMA data in burst. Host Strobe: This signal is the data in strobe from the host for an Ultra DMA data out burst. Both the rising and falling edge of HSTROBE latch the data from DD[15:0] into the device. The host may stop generating DSTROBE edges to pause an Ultra DMA data out burst. access (Read or Write) when the device is not ready to respond to a data transfer request. host. The device may stop generating DSTROBE edges to pause an Ultra DMA data in burst. STOP: STOP shall be negated by the host before data is transferred in an Ultra DMA burst. that it has completed diagnostics. Cable Select: Used to select Ddevice 0 or 1. Table 2. ATAPI Interface I/O Pin List (Continued)
The JTAG/ICE Interface is used as the in-circuit emulator for the ARM7TDMI Processor. The Disk Read Interface connects the DVD/CD Read Channel device to the controller. Table 3. JTAG/ICE Interface I/O Pin List Table 4. Disk Read Interface I/O Pin List ENDEC to recover the user data on the disk. machine during write operations.
The Disk Write Interface connects the DVD/CD Write device to the controller. Table 5. Disk Write Interface I/O Pin List format. (DVD-RW, CD-RW, DVD+RW).
The DRAM Interface connects the controller to the buffer DRAM. Table 6. DRAM Interface I/O Pin List
The External Memory Interface connects external program memory to the controller. The DVD RAM Servo device is also connected to this bus. Table 7. External Memory Interface I/O Pin List
The Servo Interface connects the servo device to the controller. The Serial Interface connects all slave devices to the controller. The I2S Audio Interface is a serial interface for external audio devices. Table 8. Servo Interface I/O Pin List used to gate off any disk write functions. Table 9. Serial Interface I/O Pin List Table 10. I2S Audio Interface I/O Pin List Table 11. Sony Philips Digital Audio Interface I/O Pin List
Figure 3. Functional Pinout
Figure 4. AT78C1501 Block Diagram
66 MHz
Printed on recycled paper. © Atmel Corporation 2002. Atmel Corporation makes no warranty for the use of its products, other than those expressly contained in the Company’s standard warranty which is detailed in Atmel’s Terms and Conditions located on the Company’s web site. The Company assumes no responsibility for any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does not make any commitment to update the information contained herein. No licenses to patents or other intellectual property of Atmel are granted by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel’s products are not authorized for use as critical components in life support devices or systems. Atmel Headquarters Atmel Operations Corporate Headquarters
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Printed on recycled paper. © Atmel Corporation 2002. Atmel Corporation makes no warranty for the use of its products, other than those expressly contained in the Company’s standard warranty which is detailed in Atmel’s Terms and Conditions located on the Company’s web site. The Company assumes no responsibility for any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does not make any commitment to update the information contained herein. No licenses to patents or other intellectual property of Atmel are granted by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel’s products are not authorized for use as critical components in life support devices or systems. Atmel Headquarters Atmel Operations Corporate Headquarters San Jose, CA 95131 TEL 1(408) 441-0311 FAX 1(408) 487-2600 Europe Atmel Sarl Route des Arsenaux 41 Case Postale 80 CH-1705 Fribourg Switzerland TEL (41) 26-426-5555 FAX (41) 26-426-5500 Asia Room 1219 Chinachem Golden Plaza TEL (852) 2721-9778 FAX (852) 2722-1369 Japan 9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan TEL (81) 3-3523-3551 FAX (81) 3-3523-7581 Memory San Jose, CA 95131 TEL 1(408) 441-0311 FAX 1(408) 436-4314 Microcontrollers San Jose, CA 95131 TEL 1(408) 441-0311 FAX 1(408) 436-4314 La Chantrerie BP 70602 1150 East Cheyenne Mtn. Blvd. Colorado Springs, CO 80906 TEL 1(719) 576-3300 FAX 1(719) 540-1759 Scottish Enterprise Technology Park Maxwell Building East Kilbride G75 0QR, Scotland TEL (44) 1355-803-000 FAX (44) 1355-242-743 RF/Automotive Theresienstrasse 2 Postfach 3535 FAX (49) 71-31-67-2340 1150 East Cheyenne Mtn. Blvd. Colorado Springs, CO 80906 TEL 1(719) 576-3300 FAX 1(719) 540-1759 Biometrics/Imaging/Hi-Rel MPU/ High Speed Converters/RF Datacom Avenue de Rochepleine BP 123 literature@atmel.com Web Site http://www.atmel.com 2049A–DVD–07/02