MC68EC000 Motorola, MC68EC000 Datasheet - Page 68
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MC68EC000
Manufacturer Part Number
MC68EC000
Description
Core Processor (SCM 68000)
Manufacturer
Motorola
Datasheet
1.MC68EC000.pdf
(145 pages)
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MOTOROLA
UDSB and/or LSDB
SIZ1–SIZ0
FC2–FC0
BGACKB
DTACKB
D15–D0
A31–A0
TSCAE
Figure 3-22. 2-Wire Bus Arbitration Timing Diagram—SCM68000 Active
COEB
RMCB
ERWB
DOEB
AOEB
RWB
CLKI
BGB
BRB
ASB
DSB
BUS THREE-STATED
BGB ASSERTED
BRB VALID INTERNAL
BRB SAMPLED
BRB ASSERTED
S0 S1 S2 S3 S4 S5 S6 S7
PROCESSOR
Freescale Semiconductor, Inc.
EC000 CORE PROCESSOR USER’S MANUAL
For More Information On This Product,
Go to: www.freescale.com
BUS RELEASED FROM THREE STATE AND
PROCESSOR STARTS NEXT BUS CYCLE
BRB NEGATED INTERNAL
BRB SAMPLED
BRB NEGATED
ALTERNATE BUS MASTER
S0 S1 S2 S3 S4 S5 S6 S7 S0 S1
PROCESSOR
Bus Operation
3-27