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MPC8544E Overview

This section provides a high-level overview of MPC8544E features. Figure 1 shows the major functional units within the device.

Key Features

The following list provides an overview of the device feature set:

• High-performance, 32-bit core enhanced by resources for embedded cores defined by the Power ISA, and built on Power Architecture® technology:

— 32-Kbyte L1 instruction cache and 32-Kbyte L1 data cache with parity protection. Caches can be locked entirely or on a per-line basis, with separate locking for instructions and data.

— Signal-processing engine (SPE) APU (auxiliary processing unit). Provides an extensive instruction set for vector (64-bit) integer and fractional operations. These instructions use both the upper and lower words of the 64-bit GPRs as they are defined by the SPE APU.

— Double-precision floating-point APU. Provides an instruction set for double-precision (64-bit) floating-point instructions that use the 64-bit GPRs.

— 36-bit real addressing

— Embedded vector and scalar single-precision floating-point APUs. Provide an instruction set for single-precision (32-bit) floating-point instructions.

— Memory management unit (MMU). Especially designed for embedded applications. Supports 4-Kbyte–4-Gbyte page sizes.

— Enhanced hardware and software debug support

— Performance monitor facility that is similar to, but separate from, the device performance monitor