PEX8616 PLX | Alldatasheet
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Features
PEX 8616 General Features o 16-lane, 4-port PCIe Gen2 switch - Integrated 5.0 GT/s SerDes o 19 x 19mm2, 324-pin FCBGA package o Typical Power: < 3.0 Watts PEX 8616 Key Features o Standards Compliant - PCI Express Base Specification, r2.0 (backwards compatible w/ PCIe r1.0a/1.1) - PCI Power Management Spec, r1.2 - Microsoft Vista Compliant - Supports Access Control Services - Dynamic link-width control - Dynamic SerDes speed control o High Performance - Non-blocking switch fabric - Full line rate on all ports - Packet Cut-Thru with 150ns max packet latency (x4 to x4) - 2KB Max Payload Size - Read Pacing (bandwidth throttling) - Dual-Cast o Flexible Configuration - Ports configurable as x1, x2, x4, x8 - Registers configurable with strapping pins, EEPROM, I2C, or host software - Lane and polarity reversal - Compatible with PCIe 1.0a PM o Dual-Host & Fail-Over Support - Configurable Non-Transparent port - Moveable upstream port - Crosslink port capability o Quality of Service (QoS) - Eight traffic classes per port - Weighted round-robin source port arbitration o Reliability, Availability, Serviceability - 2 Hot Plug Ports with native HP Signals - All ports hot plug capable thru I2C (Hot Plug Controller on every port) - ECRC and Poison bit support - Data Path parity - Memory (RAM) Error Correction - INTA# and FATAL_ERR# signals - Advanced Error Reporting - Port Status bits and GPIO available - Per port error diagnostics - Performance Monitoring
- Per port payload & header counters - JTAG AC/DC boundary scan The ExpressLaneTM PEX 8616 device offers PCI Express switching capability enabling users to add scalable high bandwidth, non-blocking interconnection to a wide variety of applications including workstations, storage systems, communications platforms, embedded systems, and intelligent I/O modules. The PEX 8616 is well suited for fan-out, aggregation, and peer-to-peer applications. High Performance & Low Packet Latency The PEX 8616 architecture supports packet cut-thru with a maximum latency of 150ns (x4 to x4). This, combined with large packet memory and non-blocking internal switch architecture, provides full line rate on all ports for performance-hungry applications such as servers and switch fabrics. The low latency enables applications to achieve high throughput and performance. In addition to low latency, the device supports a max payload size of 2048 bytes, enabling the user to achieve even higher throughput. Data Integrity The PEX 8616 provides end-to-end CRC (ECRC) protection and Poison bit support to enable designs that require end-to-end data integrity. PLX also supports data path parity and memory (RAM) error correction as packets pass through the switch. Flexible Register & Port Configuration The PEX 8616’s 4 ports can be configured to lane widths of x1, x2, x4, or x8. Flexible buffer allocation, along with the device's flexible packet flow control, maximizes throughput for applications where more traffic flows in the downstream, rather than upstream, direction. Any port can be designated as the upstream port, which can be changed dynamically. The PEX 8616 also provides several ways to configure its registers. The device can be configured through strapping pins, I interface, host software, or an optional serial EEPROM. This allows for easy debug during the development phase, performance monitoring during the operation phase, and driver or software upgrade. Figure 1 shows some of the PEX 8616’s common port configurations. PEX 8616 Version 0.8 2007
Figure 1. Common Port Configurations
Figure 3. Fan-in/out Usage applications such as Network Interface Cards (NICs). intervention or management by the host. Figure 4. 10GE NIC Fan-Out Each FC controller supports two FC ports. Figure 5. Quad-Port Fibre-Channel HBA
8 Disk Chassis
Figure 6. Dual Cast in Storage Systems
Preliminary - PLX Confidential Software Usage Model From a system model viewpoint, each PCI Express port is a virtual PCI to PCI bridge device and has its own set of PCI Express configuration registers. It is through the upstream port that the BIOS or host can configure the other ports using standard PCI enumeration. The virtual PCI to PCI bridges within the PEX 8616 are compliant to the PCI and PCI Express system models. The Configuration Space Registers (CSRs) in a virtual primary/secondary PCI to PCI bridge are accessible by type 0 configuration cycles through the virtual primary bus interface (matching bus number, device number, and function number). Interrupt Sources/Events The PEX 8616 switch supports the INTx interrupt message type (compatible with PCI 2.3 Interrupt signals) or Message Signaled Interrupts (MSI) when enabled. Interrupts/messages are generated by PEX 8616 for hot plug events, doorbell interrupts, baseline error reporting, and advanced error reporting. Development Tools PLX offers hardware and software tools to enable rapid customer design activity. These tools consist of a hardware module (PEX 8616 RDK), hardware documentation (available at www.plxtech.com ), and a Software Development Kit (also available at www.plxtech.com). ExpressLane PEX 8616 RDK The PEX 8616 RDK is a hardware module containing the PEX 8616 which plugs right into your system. The PEX 8616 RDK can be used to test and validate customer software, or used as an evaluation vehicle for PEX 8616 features and benefits. The PEX 8616 RDK provides everything that a user needs to get their hardware and software development started. For more information, please refer to the PEX 8616 RDK Product Brief. Software Development Kit (SDK) PLX’s Software Development Kit is available for download at www.plxtech.com/sdk . The software development kit includes drivers, source code, and GUI interfaces to aid in configuring and debugging the PEX 8616. For more information, please refer to the PEX 8616 RDK Product Brief. PLX Technology, Inc. 870 Maude Ave. Sunnyvale, CA 94085 USA Tel: 1-800-759-3735 Tel: 1-408-774-9060 Fax: 1-408-774-2169 Email: info@plxtech.com Web Site: www.plxtech.com Product Ordering Information Part Number Description PEX8616-AA50BC G 16-Lane, 4-Port PCI Express Switch, Pb-Free (19x19mm2) PEX8616-AA RDK PEX 8616 Rapid Development Kit Please visit the PLX Web site at http://www.plxtech.com or contact PLX sales at 408-774-9060 for sampling. © 2007 PLX Technology, Inc. All rights reserved. PLX and the PLX logo are registered trademarks of PLX Technology, Inc. ExpressLane is a trademark of PLX Technology, Inc., which may be registered in some jurisdiction. All other product names that appear in this material are for identification purposes only and are acknowledged to be trademarks or registered trademarks of their respective companies. Information supplied by PLX is believed to be accurate and reliable, but PLX Technology, Inc. assumes no responsibility for any errors that may appear in this material. PLX Technology, Inc. reserves the right, without notice, to make changes in product design or specification. PEX8616-SIL-PB-P1-0.8 09/07