PI7C9X20404SLCFDE.pdf
No.11341
● 4-lane PCI Express Switch with 4 PCI Express ports
● Non-blocking full-wired switching capability at 16 Gbps when
all 4 ports are enabled
● Supports “Cut-through”(Default) as well as “Store and Forward”
mode for packet switching
● 150 ns typical latency for packet routed through Switch without
blocking
● Strapped pins configurable with optional EEPROM or SMBus
● SMBus interface support
Similar to the role of PCI/PCIX Bridge in PCI/PCIX bus architecture, the function of PCI Express (PCIE) Switch is to expand the connectivity to allow more end devices to be reached by host controllers in PCIE serial interconnect architecture. The 4-lane PCIE Switch can be configured as 4-port type combinations. It provides users the flexibility to expand or fan-out the PCI Express lanes based on their application needs. For some systems that do not need all the 4 lanes, the unused lanes can be disabled to reduce power consumption.
