PI7C8152AMAE

Specialized Overview

The PI7C8152AMAE is a 2-port PCI-to-PCI bridge manufactured by Diodes Incorporated, operating at 32-bit width and supporting clock frequencies of 66 MHz or 33 MHz. It utilizes a 160-pin MQFP package and functions within an extended commercial temperature range of 0°C to +85°C. The device supports synchronous bus transactions between primary and secondary ports, requiring both to run at the same frequency. It provides internal arbitration for four secondary bus masters with programmable priority levels and includes two 128-byte FIFOs for delay transactions and two for posted memory operations.

Specialized Feature Summary

• Supports synchronous mode operation where primary and secondary ports run at identical frequencies
• Provides internal arbitration for up to four secondary bus masters with programmable priority control
• Includes dual 128-byte FIFOs dedicated to delay transactions and posted memory operations
• Features enhanced address decoding capabilities including VGA palette snooping and ISA-aware legacy support

Specialized Applications

• PCI bus expansion on motherboards to add additional slots or devices
• Enabling multiple devices on single PCI add-in cards
• System integration involving graphics, storage, and I/O components

Specialized Procurement Notes

Verify component authenticity through authorized channels as this part may be subject to obsolescence. Confirm package integrity and pin alignment upon receipt. Check datasheet revisions for any specific handling requirements related to the 160-pin MQFP form factor before assembly.

Specialized Selection Notes

Select the PI7C8152AMAE when synchronous PCI-to-PCI bridging is required without asynchronous frequency mismatch capabilities. Ensure system design accommodates the 160-pin MQFP footprint. Verify that all connected PCI devices operate within the specified 32-bit/66MHz or 33MHz parameters.

Specialized Part Context

This component belongs to the PI7C8152 family, which also includes the PI7C8152B variant. The 'A' suffix denotes synchronous-only operation, whereas the 'B' variant supports asynchronous modes allowing different frequencies on primary and secondary ports. Both share similar architectural features and package types.

Specialized Replacement Considerations

The PI7C8152BMA is a compatible alternative if asynchronous operation between primary and secondary buses is needed. Direct substitution requires verifying software configuration differences regarding bus synchronization settings.