MC68LC040RC25A Datasheet, PDF (118/442 Pages) Freescale Semiconductor, Inc – M68040 Users Manual

Freescale Semiconductor, Inc.
5.14 SIGNAL SUMMARY
Table 5-7 provides a summary of the electrical characteristics of the signals discussed in
this section.
Signal Name
Address Bus
Autovector
Bus Busy
Bus Clock
Bus Grant
Bus Request
Cache Disable
Cache Inhibit Out
Data Bus
Data Latch Enable1
Ground
Interrupt Pending
Interrupt Priority Level2
Bus Lock
Bus Lock End
Memory Inhibit
MMU Disable3
Processor Clock
Processor Status
Read/Write
Reset In
Reset Out
Snoop Control
Transfer Acknowledge
Transfer Burst Inhibit
Transfer Cache Inhibit
Transfer Error Acknowledge
Transfer in Progress
Transfer Line Number
Transfer Modifier
Transfer Size
Table 5-7. Signal Summary
Mnemonic
A31–A0
AVEC
BB
BCLK
BG
BR
CDIS
CIOUT
D31–D0
DLE
GND
IPEND
IPL2–IPL0
LOCK
LOCKE
MI
MDIS
PCLK
PST3–PST0
R/ W
RSTI
RSTO
SC1, SC0
TA
TBI
TCI
TEA
TIP
TLN1, TLN0
TM2–TM0
SIZ1, SIZ0
Type
Input/Output
Input
Input/Output
Input
Input
Output
Input
Output
Input/Output
Input
Ground
Output
Input
Output
Output
Output
Input
Input
Output
Input/Output
Input
Output
Input
Input/Output
Input
Input
Input
Output
Output
Output
Input/Output
Active
High
Low
Low
—
Low
Low
Low
Low
High
High
—
Low
Low
Low
Low
Low
Low
—
High
High/Low
Low
Low
High
Low
Low
Low
Low
Low
High
High
High
Three-State
Yes
—
Yes
—
—
No
—
Yes
Yes
—
—
No
—
Yes
Yes
No
—
—
No
Yes
—
No
—
Yes
—
—
—
Yes
Yes
Yes
Yes
5-16
M68040 USER’S MANUAL
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