PI7C9X110 Pericom Semiconductor Corporation, PI7C9X110 Datasheet - Page 23

• Manufacturer Part Number: PI7C9X110
• Description: Pcie-to-pci Reversible Bridge
• Manufacturer: Pericom Semiconductor Corporation

PI7C9X110
PCIe-to-PCI Reversible Bridge
In reverse (REVRSB=1) and transparent (TM0=0) mode shown in Figure 3-2, PI7C9X110 becomes a PCI-to-PCI
Express bridge that its PCI bus interface is connected to the host chipset between and the PCI Express x1 link. It
enables the legacy PCI Host Systems to provide PCI Express capability.
PI7C9X110 provides a solution to convert existing PCI based designs to adapt quickly into PCI Express base
platforms. Existing PCI based applications will not have to undergo a complete re-architecture in order to interface
to PCI Express technology.
Figure 4-2 Reverse and Transparent Bridge Mode
Host
Processor
32bit / 66MHz
System
Chipset
Memory
32bit / 66MHz
Fibre
Fast
SCSI
PI7C9X110
Channel
Ethernet
x1 link
Page 23 of 145
Pericom Semiconductor
May 2008, Revision 2.6