MPC7441 查看數據表（PDF） - Freescale Semiconductor

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MPC7441

RISC Microprocessor Hardware Specifications

Freescale Semiconductor 

Comparison with the MPC7447A, MPC7447, MPC7445, and MPC7441

• Reliability and serviceability

— Parity checking on system bus

— Parity checking on the L1 caches and L2 data tags

— ECC or parity checking on L2 data

3 Comparison with the MPC7447A, MPC7447, MPC7445,

and MPC7441

Table 1 compares the key features of the MPC7448 with the key features of the earlier MPC7447A,

MPC7447, MPC7445, and MPC7441. All are based on the MPC7450 RISC microprocessor and are

architecturally very similar. The MPC7448 is identical to the MPC7447A, but the MPC7448 supports 1

Mbyte of L2 cache with ECC and the use of dynamic frequency switching (DFS) with more bus-to-core

ratios.

Table 1. Microarchitecture Comparison

Microarchitectural Specs

MPC7448 MPC7447A MPC7447 MPC7445 MPC7441

Logic inversions per cycle

Pipeline stages up to execute

Total pipeline stages (minimum)

Pipeline maximum instruction throughput

Instruction buffer size

Completion buffer size

Renames (integer, float, vector)

Basic Pipeline Functions

Pipeline Resources

Maximum Execution Throughput

18

5

7

3 + branch

12

16

16, 16, 16

SFX

Vector

Scalar floating-point

SFX integer units

Vector units

Scalar floating-point unit

3

2 (any 2 of 4 units)

1

Out-of-Order Window Size in Execution Queues

1 entry × 3 queues

In order, 4 queues

In order

Prediction structures

BTIC size, associativity

BHT size

Link stack depth

Unresolved branches supported

Branch taken penalty (BTIC hit)

Minimum misprediction penalty

Branch Processing Resources

BTIC, BHT, link stack

128-entry, 4-way

2K-entry

8

3

1

6

MPC7448 RISC Microprocessor Hardware Specifications, Rev. 4

Freescale Semiconductor

7

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