Diodes Incorporated
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PI7C8154A (Obsolete)

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Product Description

The PI7C8154A is a PCI-to-PCI Bridge, designed to be fully compliant with the 64-bit, 66MHz implementation of the PCI Local Bus Specification, Revision 2.2. The PI7C8154A supports synchronous bus transactions between devices on the Primary Bus and the Secondary Buses operating up to 66MHz. The primary and secondary buses can also operate in concurrent mode, resulting in added increase in system performance. 


  • 64-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
    • 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
  • Compliant with the PCI Power Management Specification, Revision 1.1
  • Provides internal arbitration for nine secondary bus masters
    • Programmable 2-level priority arbiter 
  • Supports serial EEPROM interface for register auto-load and VPD access
  • Dynamic Prefetching Control
  • Supports posted write buffers in all directions
  • 512 byte upstream posted memory write
  • 512 byte downstream posted memory write
  • 1024 byte upstream read data buffer
  • 1024 byte downstream read data buffer
  • Enhanced address decoding
  • 32-bit I/O address range
  • 32-bit memory-mapped I/O address range
  • 64-bit prefetchable address range  
  • IEEE 1149.1 JTAG interface support
  • Industrial temperature range -40°C to 85°C
  • 3.3V and 5V signaling
  • 304-pin PBGA package
    • Pb-free & Green available

Product Specifications

Product Parameters

Lanes N/A
PCI Bus Width 64
PCI Speed 66
Ports 2
Ambient or Junction Temperature (°C) -40 to 85

Technical Documents

Recommended Soldering Techniques