MC68EC000 Motorola, MC68EC000 Datasheet - Page 70

• Manufacturer Part Number: MC68EC000
• Description: Core Processor (SCM 68000)
• Manufacturer: Motorola

MOTOROLA
UDSB and/or LDSB
SIZ1–SIZ0
FC2–FC0
BGACKB
DTACKB
D15–D0
A31–A0
TSCAE
ERWB
AOEB
COEB
DOEB
RMCB
RWB
BRB
BGB
ASB
DSB
CLKI
Figure 3-24. 2-Wire Bus Arbitration Timing Diagram—Special Case
BUS THREE-STATED
BGB ASSERTED
BRB VALID INTERNAL
BRB SAMPLED
BRB ASSERTED
S0
PROCESSOR
Freescale Semiconductor, Inc.
EC000 CORE PROCESSOR USER’S MANUAL
S2
For More Information On This Product,
S4
Go to: www.freescale.com
S6
BUS RELEASED FROM THREE STATE AND
PROCESSOR STARTS NEXT BUS CYCLE
BRB NEGATED INTERNAL
BRB SAMPLED
BRB NEGATED
ALTERNATE BUS MASTER
S0
S2
PROCESSOR
S4
Bus Operation
S6
S0
3-29