Diodes Incorporated
Back to PCIe / PCI Bridges


PCI Bridge, 2-Port

Contact Sales

Log in or register to manage email notifications about changes to datasheets or PCNs for this part.

Product Description

The PI7C8152A and PI7C8152B (PI7C8152x) are Diodes' PCI-to-PCI Bridge that are designed to be fully compliant with the 32-bit, 66MHz implementation of the PCI Local Bus Specification, Revision 2.2. The PI7C8152B supports both synchronous and asynchronous bus transactions between devices on the Primary Bus and the Secondary Buses operating up to 66MHz. The PI7C8152A supports synchronous transactions only. In synchronous mode, both buses must operate at the same frequency. The Primary and Secondary Bus can also operate in concurrent mode, resulting in added increase in system performance. 


  • 32-bit Primary and Secondary Ports run up to 66MHz
  • Compliant with the PCI Local Bus Specification, Revision 2.2
  • Compliant with PCI-to-PCI Bridge Architecture Specification, Revision 1.1.
  • Compliant with the Advanced Configuration Power Interface (ACPI) Specification.
  • Compliant with the PCI Power Management Specification, Revision 1.1.
    • All I/O and memory commands
    • Type 1 to Type 0 configuration conversion
    • Type 1 to Type 1 configuration forwarding
    • Type 1 configuration write to special cycle conversion
  • Synchronous and Asynchronous operation support 
    • Supported modes of Asynchronous operation (PI7C8152B ONLY)
      25MHz to 66MHz 25MHz to 66MHz
    • Supported modes of Synchronous operation
      66Mhz 66Mhz
      50Mhz 50Mhz
      33Mhz 33Mhz
      25Mhz 25Mhz
  • Provides internal arbitration for four secondary bus masters 
    • Programmable 2-level priority arbiter 
    • Disable control for use of external arbiter 
  • Supports posted write buffers in all directions
  • Four 128 byte FIFOís for delay transactions
  • Two 128 byte FIFOís for posted memory transactions
  • Enhanced address decoding
  • 32-bit I/O address range
  • 32-bit memory-mapped I/O address range
  • 64-bit prefetchable address range
  • ISA-aware mode for legacy support in the first 64KB of I/O address range
  • Extended commercial temperature range 0°C to 85°C
  • 3.3V core; 3.3V and 5V signaling
  • 160-pin MQFP package

Product Specifications

Product Parameters

PCI Speed 66
PCI Bus Width 32
Ports 2
Lanes N/A
Ambient or Junction Temperature (°C) 0 to 85

Technical Documents

Recommended Soldering Techniques


Additional Technical Documents are available upon request: 
Application information, Design tool model software, Design kits, Evaluation board, and Other technical documents

Request Documents