Device Overview
The 89HPES64H16 is a member of the IDT PRECISE™ family of
PCI Express® switching solutions. The PES64H16 is a 64-lane, 16-port
system interconnect switch optimized 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 maximum switch 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
– Low-latency cut-through switch architecture
– Support for Max Payload Size up to 2048 bytes
– Supports two virtual channels and eight traffic classes
– PCI Express Base Specification Revision 1.1 compliant
◆ Flexible Architecture with Numerous Configuration Options
– Port arbitration schemes utilizing round robin algorithms
– Virtual channels arbitration based on priority
– Automatic per port link width negotiation to x8, x4, x2 or x1
– Automatic lane reversal on all ports
– Automatic polarity inversion on all lanes
– Supports locked transactions, allowing use with legacy software
– Ability to load device configuration from serial EEPROM
– Ability to control device via SMBus
◆ Highly Integrated Solution
– Requires no external components
– Incorporates on-chip internal memory for packet buffering and
queueing
– 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 upstream port failover capability
– Supports optional PCI Express end-to-end CRC checking