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PES48H12G2 User Manual
®
Introduction
The 89HPES48H12G2 is a member of the IDT PRECISE™ family of PCI Express® switching solutions.
The PES48H12G2 is a 48-lane, 12-port system interconnect switch optimized for PCI Express Gen2 packet
switching in high-performance applications, supporting multiple simultaneous peer-to-peer traffic flows.
Target applications include servers, storage, communications, embedded systems, and multi-host or intelli-
gent I/O based systems with inter-domain communication.
Utilizing standard PCI Express Gen2 interconnect, the PES48H12G2 provides the most efficient system
interconnect switching solution for applications requiring high throughput, low latency, and simple board
layout with a minimum number of board layers. It provides 48 GBps (384 Gbps) of aggregated, full-duplex
switching capacity through 48 integrated serial lanes, using proven and robust IDT technology. Each lane is
capable of 5 GT/s of bandwidth in both directions and is fully compliant with PCI Express Base specification
2.0.
Features
High Performance Non-Blocking Switch Architecture
– 48-lane 12-port PCIe switch
• Six x8 ports switch ports each of which can bifurcate to two x4 ports (total of twelve x4 ports)
– Integrated SerDes supports 5.0 GT/s Gen2 and 2.5 GT/s Gen1 operation
– Delivers up to 48 GBps (384 Gbps) of switching capacity
– Supports 128 Bytes to 2 KB maximum payload size
– Low latency cut-through architecture
– Supports one virtual channel and eight traffic classes
Standards and Compatibility
– PCI Express Base Specification 2.0 compliant
– Implements the following optional PCI Express features
• Advanced Error Reporting (AER) on all ports
• End-to-End CRC (ECRC)
• Access Control Services (ACS)
• Power Budgeting Enhanced Capability
• Device Serial Number Enhanced Capability
• Sub-System ID and Sub-System Vendor ID Capability
• Internal Error Reporting ECN
• Multicast ECN
• VGA and ISA enable
• L0s and L1 ASPM
• ARI ECN
Port Configurability
– x4 and x8 ports
• Ability to merge adjacent x4 ports to create a x8 port
– Automatic per port link width negotiation
(x8 x4 x2 x1)
– Crosslink support
– Automatic lane reversal
– Autonomous and software managed link width and speed control
PES48H12G2 Device
1 - 1
Chapter 1
Overview
April 5, 2013
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