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July 19, 2007
2007 Integrated Device Technology, Inc.
IDT and the IDT logo are registered trademarks of Integrated Device Technology, Inc.
Devic e Overview
The 89HPES64H16 is a member of the IDT PRECISE famly of
PCI Expressswitching solutions. The PES64H16 is a 64-lane, 16-port
systeminterconnect switch optimzed for PCI Express packet switching
in high-performance applications, supporting multiple simultaneous
peer-to-peer traffic flows. Target applications include servers, storage,
communications, and embedded systems.
Features
High Performance PCI Express Switch
–
Sixteen maximumswitch ports
Eight main ports each of which consists of 8 SerDes
Each x8 main port can further bifurcate to 2 x4-ports
–
Sixty-four 2.5 Gbps embedded SerDes
Supports pre-emphasis and receive equalization on per-port
basis
–
Delivers 256 Gbps (32 GBps) of aggregate switching capacity
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Low-latency cut-through switch architecture
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Support for Max Payload Size up to 2048 bytes
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Supports two virtual channels and eight traffic classes
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PCI Express Base Specification Revision 1.1 compliant
◆
Flexible Architecture with Numerous Configuration Options
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Port arbitration schemes utilizing round robin algorithms
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Virtual channels arbitration based on priority
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Automatic per port link width negotiation to x8, x4, x2 or x1
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Automatic lane reversal on all ports
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Automatic polarity inversion on all lanes
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Supports locked transactions, allowing use with legacy soft-
ware
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Ability to load device configuration fromserial EEPROM
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Ability to control device via SMBus
◆
Highly Integrated Solution
–
Requires no external components
–
Incorporates on-chip internal memory for packet buffering and
queueing
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Integrates sixty-four 2.5 Gbps embedded full duplex SerDes,
8B/10B encoder/decoder (no separate transceivers needed)
◆
Reliability, Availability, and Serviceability (RAS) Features
–
Redundant upstreamport failover capability
–
Supports optional PCI Express end-to-end CRC checking
Block Diagram
Figure 1 Internal Block Diagram
64 PCI Express Lanes
Up to 8 x8 ports or 16 x4 Ports
16-Port Switch Core
Frame Buffer
Route Table
Port
Arbitration
Scheduler
DL/Transaction Layer
SerDes
x8/x4/x2/x1
DL/Transaction Layer
SerDes
x8/x4/x2/x1
DL/Transaction Layer
SerDes
x8/x4/x2/x1
DL/Transaction Layer
SerDes
x8/x4/x2/x1
DL/Transaction Layer
SerDes
x8/x4/x2/x1
DL/Transaction Layer
SerDes
x8/x4/x2/x1
DL/Transaction Layer
SerDes
x8/x4/x2/x1
DL/Transaction Layer
SerDes
x8/x4/x2/x1
89HPES64H16
Data Sheet
64-Lane 16-Port PCI Express
System Interconnect Switch