PEX8532 PLX Technology, Inc., PEX8532 Datasheet

PEX8532

Manufacturer Part Number

PEX8532

Description

Manufacturer

PLX Technology, Inc.

Datasheet

1.PEX8532.pdf (4 pages)

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Features

PEX 8532 General Features

o 32-lane PCI Express switch

o Up to eight configurable ports

o (x1, x2, x4, x8, x16)

o 35mmx35mm, 680 pin PBGA package

o Typical Power: 5.7 Watts

PEX 8532 Key Features

o Standard Compliant

o High Performance

o Non-Transparent Bridging

o Flexible Configuration

o PCI Express Power Management

o Quality of Service (QoS)

o Reliability, Availability,

- Integrated SerDes

- PCI Express Base Specification, r1.1

- Non-blocking switch fabric

- Full line rate on all ports

- Configurable Non-Transparent port

- Eight highly flexible & configurable

- Configurable with strapping pins,

- Lane and polarity reversal

- Link power management states: L0,

- Device states: D0 and D3hot

- Two Virtual Channels per port

- Eight Traffic Classes per port

- Fixed and Round-Robin Virtual

Serviceability (RAS)

- Eight Standard Hot-Plug Controllers

- Upstream port as hot-plug client

- Transaction Layer end-to-end CRC

- Poison bit

- Advanced Error Reporting

- Per port performance monitoring

- JTAG boundary scan

for Multi-Host or Intelligent I/O

Support

ports (x1, x2, x4, x8, or x16)

EEPROM, or Host software

L0s, L1, L2/L3 Ready, and L3

Channel Port Arbitration

N Average packet size

N Number of packets

N CRC errors and more

Version 1.6 2007

x x x x x x x x

Multi-purpose, Feature Rich ExpressLane™ PCI Express Switch

The ExpressLane

enabling users to add scalable high bandwidth, non-blocking interconnection to a

wide variety of applications including servers, storage systems, communications

platforms, blade servers, and embedded-control products. The PEX 8532 is well

suited for fan-out, aggregation, dual-graphics, peer-to-peer, and intelligent I/O

module applications.

Highly Flexible Port Configurations

The ExpressLane PEX 8532 offers highly configurable ports. There are a maximum

of 8 ports that can be configured to any legal width from x1 to x16, in any

combination to support your specific bandwidth needs. The ports can be configured

for symmetric (each port having the same lane width and traffic load) or

asymmetric (ports having different lane widths) traffic. In the event of asymmetric

traffic, the PEX 8532 features a flexible central packet memory that allocates a

memory buffer for each port as required by the application or endpoint. This buffer

allocation along with the device's flexible packet flow control minimizes

bottlenecks when the upstream and aggregated downstream bandwidths do not match

(are asymmetric). Any of the ports can be designated as the upstream port, which can

be changed dynamically.

End-to-end Packet Integrity

The PEX 8532 provides end-to-end CRC protection (ECRC) and Poison bit support

to enable designs that require end-to-end data integrity. These features are optional

in the PCI Express specification, but PLX provides them across its entire

ExpressLane switch product line.

Non-Transparent “Bridging” in a PCI Express Switch

The PEX 8532 product supports full non-transparent bridging functionality to allow

implementation of multi-host systems and intelligent I/O modules in applications

such as communications, storage, and blade servers. To ensure quick product

migration, the non-transparency features are implemented in the same fashion as in

standard PCI applications.

Non-transparent bridges allow systems to isolate memory domains by presenting the

processor subsystem as an endpoint, rather than another memory system. Base

address registers are used to translate addresses; doorbell registers are used to send

interrupts between the address domains; and scratchpad registers are accessible from

both address domains to allow inter-processor communication.

Two Virtual Channels

The ExpressLane PEX 8532 switch supports 2 full-featured Virtual Channels (VCs)

and 8 Traffic Classes (TCs). The mapping of Traffic Classes to port-specific Virtual

Channels allows for different mappings on different ports. In addition, the devices

offer user-selectable Virtual Channel arbitration algorithms to enable users to fine

tune the Quality of Service (QoS) required for a specific application.

Low Power with Granular SerDes Control

The PEX 8532 provides low power capability that is fully compliant with the PCI

Express power management specification. In addition, the SerDes physical links can

be turned off when unused for even lower power.

Flexible & Versatile PCI Express™ Switch

PEX 8532

PEX 8532 device offers PCI Express switching capability

Related parts for PEX8532

PEX8532 Summary of contents

Page 1

Version 1.6 2007 . Features S PEX 8532 General Features o 32-lane PCI Express switch - Integrated SerDes eight configurable ports o (x1, x2, x4, x8, x16) o 35mmx35mm, 680 pin PBGA package o Typical Power: 5.7 ...

Page 2

Flexible Port Width Configuration The lane width for each port can be individually configured through auto-negotiation, hardware strapping, upstream software configuration, or through an optional EEPROM. The PEX 8532 supports a large number of port configurations. For example, if you ...

Page 3

Graphics Fan-out Switch The number and variety of PCI Express native-mode devices is growing quickly. The devices such as graphics cards are expected to become mainstream very rapidly. As that happens, it will be necessary to take a wide (x16) ...

Page 4

... Software Development Kit (SDK). Figure 7. PEX 8532 RDK Product Ordering Information PLX Technology, Inc. Part Number 870 Maude Ave. PEX8532-BC25BI Sunnyvale, CA 94085 USA PEX8532-BC25BI G Tel: 1-800-759-3735 PEX 8532-BC RDK Tel: 1-408-774-9060 x8 Adapter Fax: 1-408-774-2169 x4 Adapter Email: info@plxtech.com x1 Adapter Web Site: www ...

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