89HPES12T3G2

www.DataSheet4U.com 12-Lane 3-Port Gen2 PCI Express® Switch ® 89HPES12T3G2 Data Sheet Advance Information* Device 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 communications/networking. It provides connectivity and switching functions between a PCI Express upstream port and two downstream ports and supports switching between downstream ports. 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 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 – Ability to load device configuration from serial EEPROM ◆ Features Block Diagram 3-Port Switch Core / 12 PCI Express Lanes Frame Buffer Route Table Port Arbitration Scheduler Transaction Layer Data Link Layer Transaction Layer Data Link Layer Transaction Layer Data Link Layer Multiplexer / Demultiplexer Phy Logical Layer Multiplexer / Demultiplexer Phy Logical Lay...