Mc68020/Ec020 Block Diagram - Motorola MC68020 User Manual

SEQUENCER AND CONTROL
ADDRESS
INSTRUCTION
BUS
ADDRESS
* 32-BIT
ADDRESS
PADS
ADDRESS
BUS CONTROLLER
WRITE PENDING
BUFFER
MICROBUS
CONTROL LOGIC
BUS CONTROL
SIGNALS
* 24-Bit for MC68EC020
MOTOROLA
CONTROL
STAGE
STORE
CONTROL
LOGIC
EXECUTION UNIT
BUS
PROGRAM
COUNTER
SECTION
BUS
PREFETCH PENDING
BUFFER
Figure 1-1. MC68020/EC020 Block Diagram
M68020 USER'S MANUAL
INSTRUCTION PIPE
STAGE STAGE
D C B
INSTRUCTION
CACHE
DATA
ADDRESS
SECTION
SECTION
MISALIGNMENT
MULTIPLEXER
CACHE
HOLDING
REGISTER
(CAHR)
INTERNAL
DATA
BUS
32-BIT
DATA
PADS
SIZE
MULTIPLEXER
DATA
BUS
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