PI7C8152BMAIE

Specialized Overview

The PI7C8152BMAIE is a 32-bit PCI-to-PCI bridge supporting primary and secondary ports at 66 MHz or 33 MHz. It enables asynchronous operation, allowing different frequencies on each port. The device features internal arbitration for four secondary bus masters with programmable priority, posted write buffers in both directions, and two 128-byte FIFOs for delay transactions alongside two for posted memory operations. It supports 32-bit I/O and memory-mapped I/O ranges, 64-bit prefetchable addressing, VGA palette snooping, and ISA-aware mode. Operating voltage includes a 3.3V core with 3.3V/5V PCI I/O interface.

Specialized Feature Summary

• Supports asynchronous bus transactions between primary and secondary ports running at different frequencies
• Provides internal arbitration for up to four secondary bus masters with programmable priority levels
• Includes dual 128-byte FIFOs for delay transactions and dual 128-byte FIFOs for posted memory transactions
• Features enhanced address decoding with VGA palette snooping and legacy ISA 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 requiring concurrent primary and secondary bus operation

Specialized Procurement Notes

Verify component authenticity through authorized Diodes Incorporated channels due to end-of-life status. Confirm package integrity upon receipt as the unit utilizes a 160-pin MQFP form factor. Check datasheet revisions for any specific handling instructions related to moisture sensitivity level 3 compliance before soldering processes.

Specialized Selection Notes

Select this model when asynchronous frequency scaling between PCI buses is required, unlike the synchronous-only PI7C8152A variant. Ensure system design accommodates the 160-pin MQFP footprint and thermal requirements within the extended commercial temperature range of 0°C to 85°C. Validate compatibility with existing ACPI and Power Management specifications during integration.

Specialized Part Context

This component belongs to the PI7C8152 family manufactured by Pericom Semiconductor Corporation, now part of Diodes Incorporated. It serves as an Intel 21152 compatible bridge solution designed to expand PCI bus loading capabilities beyond standard specification limits. The B suffix specifically denotes support for asynchronous operations compared to the A variant.

Specialized Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify availability of equivalent bridge controllers from other manufacturers if direct replacement is necessary.