特性 Features

◆ High Performance PCI Express Switch

– Ten 5 Gbps Gen2 PCI Express lanes

– Four switch ports

? One x4 upstream port

? Three x2 downstream ports

– Low latency cut-through switch architecture

– Support for Max Payload Size up to 2048 bytes

– One virtual channel

– Eight traffic classes

– PCI Express Base Specification Revision 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

? VGA and ISA enable

? L0s and L1 ASPM

? ARI ECN

◆ Flexible Architecture with Numerous Configuration Options

– Automatic per port link width negotiation to x4, x2 or x1

– Automatic lane reversal on all ports

– Automatic polarity inversion

– Ability to load device configuration from serial EEPROM

◆ On-Die Temperature Sensor

– Range of 0 to 127.5 degrees Celsius

– Three programmable temperature thresholds with over and

under temperature threshold alarms

– Automatic recording of maximum high or minimum low

temperature

◆ Legacy Support

– PCI compatible INTx emulation

– Bus locking

◆ Highly Integrated Solution

– Incorporates on-chip internal memory for packet buffering and

queueing