PI7C9X111SLBFDE Datasheet, PDF (10/78 Pages) Pericom Semiconductor Corporation – PCI Express-to-PCI Reversible Bridge

PI7C9X111SL
PCIe-to-PCI Reversible Bridge
1 INTRODUCTION
PI7C9X111SL is a PCIe-to-PCI/PCI-X bridge. PI7C9X111SL is compliant with the PCI Express Base
Specification, Revision 1.1, the PCI Express Card Electromechanical Specification, Revision 1.1, the PCI Local
Bus Specification, Revision 3.0 and PCI Express to PCI/PCI-X Bridge Specification, Revision 1.0. PI7C9X111SL
supports transparent mode operation. Also, PI7C9X111SL supports forward and reverse bridging. In forward
bridge mode, PI7C9X111SL has an x1 PCI Express upstream port and a 32-bit PCI downstream port. The 32-bit
PCI downstream port is 66MHz capable (see figure 1-1). In reverse bridge mode, PI7C9X111SL has a 32-bit PCI
upstream port and an x1 PCI Express downstream port. PI7C9X111SL configuration registers are backward
compatible with existing PCI bridge software and firmware. No modification of PCI bridge software and firmware
is needed for the original operation.
Figure 1-1 PI7C9X111SL Topology
Tx Rx
x1 PCI Express Port
PI7C9X111SL
PCI 32bit / 66MHz Bus
PCI
Device
PCI
Device
PCI
Device
PCI
Device
1.1 PCI EXPRESS FEATURES
• Compliant with PCI Express Base Specification, Revision 1.1
• Compliant with PCI Express Card Electromechanical Specification, Revision 1.1
• Compliant with PCI Express to PCI/PCI-X Bridge Specification, Revision 1.0
• Physical Layer interface (x1 link with 2.5Gb/s data rate)
• Lane polarity toggle
• Virtual Isochronous support (upstream TC1-7 generation, downstream TC1-7 mapping)
• ASPM support
• Beacon support
• CRC (16-bit), LCRC (32-bit)
• ECRC and advanced error reporting
• PRBS (Pseudo Random Bit Sequencing) generator/checker for chip testing
Page 10 of 78
Pericom Semiconductor - Confidential
Feb, 2010, Revision 1.5