89HPES3T3

www.DataSheet4U.com 3-Lane 3-Port PCI Express® Switch ® 89HPES3T3 Data Sheet Advance Information* Device Overview ◆ The 89HPES3T3 is a member of IDT’s PRECISE™ family of PCI Express switching solutions. The PES3T3 is a 3-lane, 3-port peripheral chip that performs PCI Express Base switching. It provides connectivity and switching functions between a PCI Express upstream port and up to four downstream ports and supports switching between downstream ports. ◆ ◆ Features ◆ ◆ High Performance PCI Express Switch – Three 2.5Gbps PCI Express lanes – Three switch ports – x1 Upstream port – Two x1 Downstream ports – Low latency cut-through switch architecture – Support for Max payload sizes up to 256 bytes – One virtual channel – Eight traffic classes – PCI Express Base Specification Revision 1.1 compliant Flexible Architecture with Numerous Configuration Options – 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 three 2.5 Gbps embedded SerDes with 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 en...