PEX 8649-AA50BC F PLX Technology, PEX 8649-AA50BC F Datasheet

Peripheral Drivers & Components (PCIs) 48Ln/12Pt PCI Exprss Gen 2 (5 GT/s) Swtch

PEX 8649-AA50BC F

Manufacturer Part Number
PEX 8649-AA50BC F
Description
Peripheral Drivers & Components (PCIs) 48Ln/12Pt PCI Exprss Gen 2 (5 GT/s) Swtch
Manufacturer
PLX Technology
Datasheet

Specifications of PEX 8649-AA50BC F

Mounting Style
SMD/SMT
Propagation Delay Time
176 ns
Package / Case
HFCBGA-676
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Highlights
© PLX Technology, www.plxtech.com
PEX 8649 General Features
o 48-lane, 12-port PCIe Gen2 switch
o 27 x 27mm
o Typical Power: 6.7 Watts
o Standards Compliant
o High Performance
o Flexible Configuration
o Multi-Host & Fail-Over Support
o Quality of Service (QoS)
o Reliability, Availability, Serviceability
PEX 8649 Key Features
- Integrated 5.0 GT/s SerDes
- PCI Express Base Specification, r2.0
- PCI Power Management Spec, r1.2
- Microsoft Vista Compliant
- Supports Access Control Services
- Dynamic link-width control
- Dynamic SerDes speed control
- Non-blocking switch fabric
- Full line rate on all ports
- Packet Cut-Thru with 176ns max packet
- 2KB Max Payload Size
- Ports configurable as x1, x2, x4, x8, x16
- Registers configurable with strapping
- Lane and polarity reversal
- Compatible with PCIe 1.0a PM
- Configurable Non-Transparent (NT) port
- Failover with NT port
- Up to Four upstream/Host ports with
- Eight traffic classes per port
- Weighted round-robin source
♦ visionPAK
- 3 Hot Plug Ports with native HP Signals
- All ports hot plug capable thru I
- 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
- JTAG AC/DC boundary scan
(backwards compatible w/ PCIe
r1.0a/1.1)
latency (x16 to x16)
pins, EEPROM, I
1+1 or N+1 failover to other upstream
ports
port arbitration
(Hot Plug Controller on every port)
• Per port error diagnostics
performancePAK
Read Pacing (bandwidth throttling)
Multicast
Dynamic Buffer/FC Credit Pool
Per Port Performance Monitoring
SerDes Eye Capture
Error Injection and Loopback
Per port payload & header counters
2
, 676-ball FCBGA package
2
C, or host software
2
C
PEX 8649, PCI Express Gen 2 Switch, 48 Lanes, 12 Ports
The ExpressLane™ PEX 8649 device offers Multi-Host PCI Express
switching capability enabling users to connect multiple hosts to their
respective endpoints via scalable, high bandwidth, non-blocking
interconnection to a wide variety of applications including servers,
storage systems, and communications platforms. The PEX 8649 is well
suited for fan-out, aggregation, and peer-to-peer applications.
Multi-Host Architecture
The PEX 8649 employs an enhanced version of PLX’s field tested PEX 8648
PCIe switch architecture, which allows users to configure the device in legacy
single-host mode or multi-host mode with up to four host ports capable of 1+1
(one active & one backup) or N+1 (N active & one backup) host failover. This
powerful architectural enhancement enables users to build PCIe based systems
to support high-availability, failover, redundant and clustered systems.
High Performance & Low Packet Latency
The PEX 8649 architecture supports packet cut-thru with a maximum
latency of 176ns (x16 to x16). This, combined with large packet memory,
flexible common buffer/FC credit pool 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 packet payload size of up to 2048 bytes,
enabling the user to achieve even higher throughput.
Data Integrity
The PEX 8649 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 circuitry
throughout the internal data paths as packets pass through the switch.
Flexible Configuration
The PEX 8649’s 12 ports can be
configured to lane widths of x1, x2, x4,
x8, or x16. 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. Figure 1
shows some of the PEX 8649’s
common port configurations in legacy
Single-Host mode.
Page 1 of 1
5/14/2009, Version 1.1

Related parts for PEX 8649-AA50BC F

PEX 8649-AA50BC F Summary of contents

Page 1

... Multi-Host Architecture The PEX 8649 employs an enhanced version of PLX’s field tested PEX 8648 PCIe switch architecture, which allows users to configure the device in legacy single-host mode or multi-host mode with up to four host ports capable of 1+1 (one active & ...

Page 2

... CPUs) allow inter-processor communication (see Figure 3). © PLX Technology, www.plxtech.com PEX 8649, PCI Express Gen 2 Switch, 48 Lanes, 12 Ports Multi-Host & Failover Support In Multi-Host mode, PEX 8649 can be configured with up to four upstream host ports, each with its own dedicated downstream ports ...

Page 3

... Interoperability The PEX 8649 is designed to be fully compliant with the PCI Express Base Specification r2.0, and is backwards compatible to PCI Express Base Specification r1.1 and r1.0a. Additionally, it supports auto-negotiation, lane reversal, and polarity reversal. Furthermore, the PEX 8649 is tested for Microsoft Vista compliance. All PLX switches undergo thorough interoperability testing in PLX’ ...

Page 4

... Figure 6. Host Centric Dual Upstream Multi-Host Systems In multi-host mode, the PEX 8649 can be shared four hosts in a system. By creating four virtual switches, the PEX 8649 allows four hosts to fan-out to their respective endpoints. This reduces the number of switches required for fan-out, saving precious board space and power consumption ...

Page 5

... RDK), hardware documentation (available at www.plxtech.com), and a Software x8 Development Kit (also available at www.plxtech.com). ExpressLane PEX 8649 RDK x4 x4 The PEX 8649 RDK (see Figure 10 hardware module containing the PEX 8649 which plugs right into your system. The PEX 8649 RDK can be used to test and validate customer software, or used as an evaluation vehicle for PEX 8649 features and benefits ...

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