89HPES24T6G2

24-Lane 6-Port Gen2 PCI Express® Switch ® 89HPES24T6G2 Data Sheet Device Overview The 89HPES24T6G2 is a member of IDT’s PRECISE™ family of PCI Express® switching solutions. The PES24T6G2 is a 24-lane, 6-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 systems. It provides connectivity and switching functions between a PCI Express upstream port and up to five downstream ports and supports switching between downstream ports. Features  High Performance PCI Express Switch – Twenty-four 5 Gbps Gen2 PCI Express lanes supporting 5 Gbps and 2.5 Gbps operation – Up to six switch ports – Support for Max Payload Size up to 2048 bytes – Supports one virtual channel and eight traffic classes – Fully compliant with PCI Express base specification Revision 2.0  Flexible Architecture with Numerous Configuration Options – Automatic per port link width negotiation to x8, x4, x2, or x1 – Automatic lane reversal on all ports – Automatic polarity inversion – Supports in-band hot-plug presence detect capability – Supports external signal for hot plug event notification allowing SCI/SMI generation for legacy operating systems – Dynamic link width reconfiguration for power/performance optimization – Configurable downstream port PCI-to-PCI bridge device numbering – Crosslink support – Supports ARI forwarding defined in the Alternative Routing-ID Interpretation (ARI) ECN fo...