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PCX7457MGU866LC PDF预览

PCX7457MGU866LC

更新时间: 2023-01-15 00:00:00
品牌 Logo 应用领域
爱特美尔 - ATMEL /
页数 文件大小 规格书
64页 667K
描述
RISC Microprocessor, 32-Bit, 866MHz, CMOS, CBGA483

PCX7457MGU866LC 数据手册

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128-Bit (4 Instructions)  
Instruction Unit  
Branch Processing Unit  
Instruction MMU  
Additional Features  
- Time Base Counter/Decrementer  
- Clock Multiplier  
- JTAG/COP Interface  
- Thermal/Power Management  
- Performance Monitor  
Instruction Queue  
(12-Word)  
128-Entry  
ITLB  
SRs  
Fetcher  
(Shadow)  
32-Kbyte  
I Cache  
Tags  
CTR  
LR  
BTIC (128-Entry)  
BHT (2048-Entry)  
IBAT Array  
Dispatch  
Unit  
Data MMU  
32-Kbyte  
D Cache  
Completion Unit  
Tags  
96-Bit (3 Instructions)  
128-Entry  
DTLB  
SRs  
(Original)  
Completion Queue  
(16-Entry)  
VR Issue  
(4-Entry/2-Issue)  
GPR Issue  
(6-Entry/3-Issue)  
FPR Issue  
(2-Entry/1-Issue)  
DBAT Array  
Reservation  
Stations (2-Entry)  
EA  
Completes up  
to three  
instructions  
per clock  
Vector  
Touch  
Queue  
Load/Store Unit  
PA  
Vector Touch Engine  
Reservation  
Station  
Reservation  
Stations (2)  
Reservation  
Stations (2)  
+
(EA Calculation)  
VR File  
GPR File  
FPR File  
Finished  
Stores  
L1 Castout  
16 Rename  
Buffers  
16 Rename  
Buffers  
16 Rename  
Buffers  
Integer  
Integer  
Unit 2  
Reservation  
Station  
Reservation  
Station  
Floating-  
Point Unit  
Reservation  
Station  
Reservation  
Station  
Unit 1  
(3)  
L1 Push  
+ x ÷  
+
x ÷  
Vector  
Permute  
Unit  
Vector  
Integer  
Unit 2  
Vector  
Integer  
Unit 1  
Completed  
Stores  
FPSCR  
Vector  
FPU  
Load Miss  
32-Bit  
64-Bit  
64-Bit  
32-Bit  
32-Bit  
128-Bit  
128-Bit  
Memory Subsystem  
L1 Store Queue  
System Bus Interface  
(1)  
512-Kbyte UniÞed L2 Cache Controller  
L3 Cache Controller  
Line Block 0/1  
(LSQ)  
L1 Service  
Queues  
Load  
Bus Store Queue  
Queue (11)  
Line  
Tags  
Block 0 (32-Byte)  
Block 1 (32-Byte)  
L1 Load Queue (LLQ)  
Castout  
Queue (9)/  
Tags Status  
Status  
Status  
L1 Load Miss (5)  
L3CR  
Push  
(2)  
Queue (10)  
L2 Store Queue (L2SQ)  
L2 Prefetch (3)  
Bus Accumulator  
19-Bit Address  
Snoop Push/  
Interventions  
L1 Castouts  
(4)  
Instruction Fetch (2)  
Cacheable Store Request(1)  
Bus Accumulator  
64-Bit Data  
(8-Bit Parity)  
External SRAM  
(1, 2, or 4 Mbytes)  
36-Bit  
Address Bus  
64-Bit  
Data Bus  
Notes: 1. The L3 cache interface is not implemented on the PC7447.  
2. The Castout Queue and Push Queue share resources such for a combined total of 10 entries.  
The Castout Queue itself is limited to 9 entries, ensuring 1 entry will be available for a push.  

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