MC68EC000 Motorola, MC68EC000 Datasheet - Page 31

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

Signal Description
2-2
Address Bus
Address Output Enable
Address Strobe
Autovector
Bus Error
Bus Grant
Bus Grant Acknowledge
Bus Request
Clock In
Clock Out
Control Output Enable
Data Bus
Disable Control
Data Output Enable
Signal Name
Freescale Semiconductor, Inc.
EC000 CORE PROCESSOR USER’S MANUAL
For More Information On This Product,
Figure 2-1. Input/Output Signals
IPLB2–IPLB0
Mnemonic
BGACKB
D15–D0
A31–A0
RESETIB
AVECB
BERRB
BGACKB
DTACKB
Table 2-1. Signal Summary
AOEB
COEB
DOEB
CLKO
DISB
HALTIB
AVECB
BGB
CLKI
BERRB
ASB
BRB
MODE
TEST
DISB
CLKI
BRB
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Input/ Output
Input/Output
SCM68000
Output
Output
Output
Output
Output
Output
Output
Input
Input
Input
Input
Input
Input
CLKO
DOEB
TESTCLK
IPENDB
HALTOB
BGB
DSB
RMCB
SIZ1–SIZ0
AOEB
D15–D0
STATUSB
RESETOB
ASB
UDSB
LDSB
COEB
RWB
ERWB
FC2–FC0
A31–A0
TSCAE
REFILLB
STOP
Active
State
High
High
High
High
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Output
Circuit
STD
STD
STD
STD
STD
STD
STD
STD
STD
STD
STD
TS
TS
TS
Instruction
HALTIB or
Hi-Z on
STOP
Yes
N/A
N/A
N/A
N/A
N/A
N/A
No
No
No
No
No
No
No
MOTOROLA
Hi-Z on Bus
or RESETIB
Relinquish
Yes
Yes
N/A
N/A
N/A
N/A
N/A
Yes
N/A
No
No
No
No
No