MPC7447A 查看數據表（PDF） - Freescale Semiconductor

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MPC7447A

RISC Microprocessor Hardware Specifications

Freescale Semiconductor 

Comparison with the MPC7447, MPC7445, and MPC7441

Table 1. Microarchitecture Comparison (continued)

Microarchitectural Specs

MPC7447A MPC7447 MPC7445 MPC7441

BHT size

Link stack depth

Unresolved branches supported

Branch taken penalty (BTIC hit)

Minimum misprediction penalty

2K-entry

8

3

1

6

Execution Unit Timings (Latency-Throughput)

Aligned load (integer, float, vector)

Misaligned load (integer, float, vector)

L1 miss, L2 hit latency

SFX (aDd Sub, Shift, Rot, Cmp, logicals)

Integer multiply (32 × 8, 32 × 16, 32 × 32)

Scalar float

VSFX (vector simple)

VCFX (vector complex)

VFPU (vector float)

VPER (vector permute)

3-1, 4-1, 3-1

4-2, 5-2, 4-2

9 data/13 instruction

1-1

3-1, 3-1, 4-2

5-1

1-1

4-1

4-1

2-1

MMUs

TLBs (instruction and data)

Tablewalk mechanism

Instruction BATs/data BATs

128-entry, 2-way

Hardware + software

8/8

8/8

8/8

4/4

L1 I Cache/D Cache Features

Size

Associativity

Locking granularity

Parity on Instruction cache

Parity on data cache

Number of data cache misses (load/store)

Data stream touch engines

32K/32K

8-way

Way

Word

Byte

5/1

4 streams

On-Chip Cache Features

Cache level

Size/associativity

Access width

L2

512-Kbyte/8-way

256-Kbyte/8-way

256 bits

MPC7447A RISC Microprocessor Hardware Specifications, Rev. 5

8

Freescale Semiconductor

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