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UM0434 Datasheet(PDF) 206 Page - STMicroelectronics

Part # UM0434
Description  The primary objective of this user?셲 manual is to describe
PDF  390 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

UM0434 Datasheet(HTML) 206 Page - STMicroelectronics

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UM0434
Instruction pipeline and execution timing
207/391
Figure 12.
e200z3 block diagram
8.1.1
Control unit
The control unit coordinates the instruction fetch unit, branch unit, instruction decode unit,
instruction issue unit, completion unit, and exception handling logic.
8.1.2
Instruction unit
The instruction unit controls the flow of instructions to the instruction buffers and decode
unit. Six prefetch buffers allow the instruction unit to fetch instructions ahead of actual
execution, and serve to decouple memory and the execution pipeline.
CPU
Load/
Data
Memory
Address
Store
Unit
Instruction Unit
Branch
Unit
PC
Unit
Instruction Buffer
GPR
CR
SPR
Multiply
Unit
Data Bus Interface Unit
Control
32
64
N
OnCE/Nexus
Interface
Control
Data
(mtspr/mfspr)
Integer
Execution
Unit
External
SPR
CTR
XER
LR
Data
Address
Control
32
64
N
Control Logic
Control Logic
Management
Unit



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