89HPES24T3G2 Datasheet | Renesas

Overview The 89HPES24T3G2 is a member of IDT’s PRECISE™ family of PCI Express® switching solutions. The PES24T3G2 is a 24-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 systems. It provides connectivity and switching functions between a PCI Express upstream port and two downstream ports and supports switching between downstream ports. Features u High Performance PCI Express Switch - Twenty-four 5 Gbps Gen2 PCI Express lanes supporting 5 Gbps and 2.5 Gbps operation - Up to three switch ports - Support for Max Payload Size up to 2048 bytes - Supports one virtual channel and eight traffic classes - Fully pliant with PCI Express base specification Revision 2.0 u 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 for virtualized and non-virtualized environments - Ability to load device configuration from serial EEPROM u Legacy Support - PCI patible INTx emulation - Supports bus locked transactions, allowing use of PCI Express with legacy software u Highly Integrated Solution - Requires no external ponents - Incorporates on-chip internal memory for packet buffering and queueing - Integrates twenty-four 5 Gbps / 2.5 Gbps embedded Ser Des, 8B/10B encoder/decoder (no separate transceivers needed) u Reliability, Availability, and Serviceability (RAS) Features - Ability to disable peer-to-peer...