FA82438MX

Overview

The FA82438MX is a component within the Intel/Altera 430MX PCISET architecture, functioning as a signal switch or multiplexer. It serves as the 82438MX bridge chip in this chipset family. The device supports symmetrical and asymmetrical DRAM organizations with four RAS lines controlled by the MTSC. It facilitates full PCI burst transfers, acting as a critical interface between the processor bus and the PCI bus for high-performance system configurations.

Feature Summary

• Supports symmetrical and asymmetrical DRAM organizations
• Four RAS lines controlled by the MTSC
• Enables full PCI burst transfers

Applications

• Intel 430MX PCISET architecture integration
• PCI-to-DRAM bridging in server systems
• High-performance workstation memory controllers

Procurement Notes

Verify the manufacturer origin, specifically distinguishing between Intel and Altera branding as both are associated with this part number in public records. Confirm the package type and date code against official datasheets to ensure authenticity. Check for any specific ordering suffixes that may indicate temperature range or packaging variations, ensuring the received unit matches the required technical specifications for your design.

Selection Notes

Select this component when designing systems based on the Intel 430MX PCISET architecture requiring robust PCI burst transfer capabilities. It is suitable for applications needing support for varied DRAM organizations. Ensure compatibility with the specific MTSC control requirements for RAS line management. This part is intended for professional system integrators rather than general consumer electronics due to its specialized chipset role.

Part Context

The FA82438MX is part of the broader 430MX PCISET family, historically significant in enterprise computing. It bridges the gap between high-speed processor buses and the PCI standard. While originally associated with Intel's chipset designs, Altera also references this component in their logic and signal switching portfolios, indicating its use in complex digital logic applications beyond simple standalone switching.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Due to the specialized nature of the 430MX PCISET architecture, direct pin-for-pin replacements may not exist without redesigning the board layout. Consult official Intel or Altera documentation for legacy chipset alternatives if migration is necessary.