PI7C8152A

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
• 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 Advanced Configuration Power Interface (ACPI) Specification. 
• Compliant with the PCI Power Management Specification, Revision 1.1.
• Synchronous and Asynchronous operation support
• Supported modes of Asynchronous operation (PI7C8152B ONLY)
  

  Primary	Secondary
  25MHz to 66MHz	25MHz to 66MHz

• Supported modes of Synchronous operation
  

  Primary	Secondary
  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 FIFO's for delay transactions 
• Two 128 byte FIFO's 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