MPC7445 Просмотр технического описания (PDF) - Freescale Semiconductor
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MPC7445 Datasheet PDF : 64 Pages
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Comparison with the MPC7400, MPC7410, MPC7450, MPC7451, and MPC7441
Table 1. Microarchitecture Comparison (continued)
Microarchitectural Specs
MPC7455/MPC7445
MPC7450/MPC7451/
MPC7441
Scalar floating-point unit
In Order
In Order
Branch Processing Resources
Prediction structures
BTIC size, associativity
BHT size
Link stack depth
Unresolved branches supported
Branch taken penalty (BTIC hit)
Minimum misprediction penalty
BTIC, BHT, Link Stack
128-Entry, 4-Way
2K-Entry
8
3
1
6
BTIC, BHT, Link Stack
128-Entry, 4-Way
2K-Entry
8
3
1
6
Execution Unit Timings (Latency-Throughput)
Aligned load (integer, float, vector)
3-1, 4-1, 3-1
Misaligned load (integer, float, vector)
4-2, 5-2, 4-2
L1 miss, L2 hit latency
9 Data/13 Instruction
SFX (aDd Sub, Shift, Rot, Cmp, logicals)
1-1
Integer multiply (32 × 8, 32 × 16, 32 × 32)
3-1, 3-1, 4-2
Scalar float
5-1
VSFX (vector simple)
1-1
VCFX (vector complex)
4-1
VFPU (vector float)
4-1
VPER (vector permute)
2-1
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
128-Entry, 2-Way
Hardware + Software
4/4
L1 I Cache/D Cache Features
Size
Associativity
Locking granularity
Parity on I cache
Parity on D cache
Number of D cache misses (load/store)
Data stream touch engines
32K/32K
8-Way
Way
Word
Byte
5/1
4 Streams
32K/32K
8-Way
Way
Word
Byte
5/1
4 Streams
On-Chip Cache Features
MPC7400/MPC7410
In Order
BTIC, BHT
64-Entry, 4-Way
512-Entry
None
2
0
4
2-1, 2-1, 2-1
3-2, 3-2, 3-2
9 (11) 1
1-1
2-1, 3-2, 5-4
3-1
1-1
3-1
4-1
1-1
128-Entry, 2-Way
Hardware
4/4
32K/32K
8-Way
Full Cache
None
None
8 (Any Combination)
4 Streams
MPC7455 RISC Microprocessor Hardware Specifications, Rev. 4.1
8
Freescale Semiconductor
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