89HPES12T3G2 Datasheet | Renesas

Overview The 89HPES12T3G2 is a member of IDT’s PRECISE™ family of PCI Express® switching solutions. The PES12T3G2 is a 12-lane, 3-port Gen2 peripheral chip that performs PCI Express Base switching with a feature set optimized for high performance applications such as servers, storage, and munications/networking. It provides connectivity and switching functions between a PCI Express upstream port and two downstream ports and supports switching between downstream ports. Features - High Performance PCI Express Switch - Twelve 5 Gbps Gen2 PCI Express lanes - Three switch ports - One x4 upstream port - Two x4 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 pliant - 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 Block Diagram - Legacy Support - PCI patible INTx emulation - Bus locking - Highly Integrated Solution - Incorporates on-chip internal memory for packet buffering and queueing - Integrates twelve 5 Gbps embedded Ser Des with 8b/10b encoder/decoder (no separate transceivers needed) - Receive equalization (Rx EQ) - 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 and Advanced Error Reporting - Supports PCI Express Native Hot-Plug, Hot-Swap capable I/O - patible with Hot-Plug I/O expanders used on PC mother- boards - Supports Hot-Swap Frame Buffer 3-Port Switch Core / 12 PCI Express Lanes Route Table Port Arbitration Scheduler Transaction Layer Data Link Layer Multiplexer /...