MPC8321ZQAFDC

Overview

The MPC8321ZQAFDC is a PowerQUICC II Pro integrated communications processor based on the e300c2 core. It features a 32-bit architecture with 16 KB L1 instruction and data caches, dual integer units, and an on-chip memory management unit (MMU). The device includes a QUICC Engine block with five unified communication controllers (UCCs) supporting Ethernet, HDLC, TDM, and UART protocols. Peripheral interfaces include a 32-bit PCI controller, four DMA channels, USB 2.0, and a 32-bit DDR1/DDR2 SDRAM memory controller. The component operates at a maximum clock frequency of 66.67 MHz and utilizes a PBGA-516 package.

Feature Summary

• Integrates a low-power e300c2 core with dual integer units for efficient parallel processing without a floating-point unit.
• Provides a versatile QUICC Engine communications complex with five UCCs for programmable protocol termination.
• Includes hardware security acceleration via the SEC 2.2 engine for cryptographic operations.
• Supports flexible memory configurations through a single 32-bit interface compatible with both DDR1 and DDR2 standards.

Applications

• ADSL SOHO and residential gateways
• Modem/routers
• Industrial control systems
• Test and measurement applications

Procurement Notes

Verify that the specific MPC8321 variant does not require UTOPIA support, as this feature is restricted to MPC8323E models. Confirm compliance with RoHS directives, noting that some listings indicate non-compliance. Ensure the design accounts for leaded solder requirements if applicable. Validate power sequencing procedures to prevent contention during ramp-up. Check for published errata relevant to the specific revision before finalizing procurement.

Selection Notes

Select this processor for cost-effective networking solutions requiring high integration. It offers backward software compatibility with previous PowerQUICC designs. Consider the absence of a floating-point unit when evaluating computational needs. Verify peripheral requirements against the available UCCs and ensure the lack of UTOPIA support aligns with system architecture constraints.

Part Context

This component belongs to the MPC8323E family of highly integrated communications processors. While sharing the same core architecture and many peripherals, the MPC8321 differs by excluding the UTOPIA interface found in higher-end variants. It targets small office/home office and broadband access markets, balancing performance with reduced board real estate and power consumption compared to earlier generations.

Replacement Considerations

MPC8323E

FAQ

Does the MPC8321 support the UTOPIA interface?

No, the MPC8321 and MPC8321E do not support the UTOPIA interface; this feature is specific to the MPC8323E and MPC8323 models.

What type of core is used in the MPC8321?

It incorporates the e300c2 core, which is based on the MPC603e architecture and lacks a floating-point unit but includes dual integer units.