Features

◆ High Performance PCI Express Switch

– Three x4 ports with 12 PCI Express lanes total

– Delivers 6 GBps (48 Gbps) aggregate switching capacity

– Low latency cut-through switch architecture

– Supports 128 to 2048 byte maximum payload size

– Supports one virtual channel

– PCI Express Base specification Revision 1.0a compliant

◆ Flexible Architecture with Numerous Configuration Options

– Port arbitration schemes utilizing round robin or weighted

round robin algorithms

– Supports automatic per port link with negotiation (x4, x2, or x1)

– Supports static lane reversal on all ports

– Supports polarity inversion

– Supports locked transactions, allowing use with legacy software

– Ability to load device configuration from serial EEPROM

◆ Highly Integrated Solution

– Requires no external components

– Incorporates on-chip internal memory for packet buffering and

queueing

– Integrates 12 2.5 Gbps embedded SerDes, 8B/10B encoder/

decoder (no separate transceivers needed)

◆ Reliability, Availability, and Serviceability (RAS) Features

– 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 ECRC passed through

– Supports PCI Express Native Hot-Plug

• Compatible with Hot-Plug I/O expanders used on PC motherboards

– Supports Hot-Swap

◆ Power Management

– Supports PCI Power Management Interface specification,

Revision 1.1 (PCI-PM)

– Unused SerDes are disabled

– Supports Advanced Configuration and Power Interface Specification,

Revision 2.0 (ACPI) supporting active link state

◆ Testability and Debug Features

– Built in SerDes Pseudo-Random Bit Stream (PRBS) generator

– Ability to read and write any internal register via the SMBus

– Ability to bypass link training and force any link into any mode

– Provides statistics and performance counters