Features
◆ High Performance PCI Express Switch
– Twelve 2.5Gbps PCI Express lanes
– Three switch ports
– Upstream port configurable up to x4
– Downstream ports configurable up to x4
– Low-latency cut-through switch architecture
– Support for Max Payload Sizes up to 2048 bytes
– One virtual channel
– Eight traffic classes
– PCI Express Base Specification Revision 1.1 compliant
◆ 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 on all lanes
– Ability to load device configuration from serial EEPROM
◆ Legacy Support
– PCI compatible INTx emulation
– Bus locking
◆ Highly Integrated Solution
– Requires no external components
– Incorporates on-chip internal memory for packet buffering and
queueing
– Integrates twelve 2.5 Gbps embedded SerDes with 8B/10B
encoder/decoder (no separate transceivers needed)
◆ Reliability, Availability, and Serviceability (RAS) Features
– Supports ECRC and Advanced Error Reporting
– Internal end-to-end parity protection on all TLPs ensures data
integrity even in systems that do not implement end-to-end
CRC (ECRC)
– Supports PCI Express Native Hot-Plug, Hot-Swap capable I/O
– Compatible with Hot-Plug I/O expanders used on PC and
server motherboards