MC68030 Datasheet, PDF (120/602 Pages) Motorola, Inc – ENHANCED 32-BIT MICROPROCESSOR

Signal Name
Data Transfer and
Size Acknowledge
Synchronous
Termination
Cache Inhibit In
Cache Inhibit Out
Cache Burst Request
Cache Burst
Acknowledge
Interrupt Priority Level
Interrupt Pending
Autovector
Bus Request
Bus Grant
Bus Grant Acknowledge
Reset
Halt
Bus Error
Cache Disable
MMU Disable
Pipe Refill
Microsequencer Status
Clock
Power Supply
Ground
Signal Description
Table 5-1. Signal Index (Sheet 2 of 2)
Mnemonic
DSACK0/
DSACK1
STERM
CIIN
CIOUT
CBREQ
CBACK
Function
Bus response signals that indicate the requested data transfer operation
is completed. In addition, these two lines indicate the size of the external
bus port on a cycle-by-cycle basis and are used for asynchronous
transfers.
Bus response signal that indicates a port size of 32 bits and that data
may be latched on the next falling clock edge.
Prevents data from being loaded into the MC68030 instruction and data
caches.
Reflects the CI bit in ATC entries or TTx register; indicates that external
caches should ignore these accesses
Indicates a burst request for the instruction or data cache.
Indicates that the accessed device can operate in burst mode.
IPL0–IPL2
IPEND
AVEC
BR
BG
BGACK
RESET
HALT
BERR
CDIS
MMUDIS
REFILL
STATUS
CLK
V_CC
GND
Provides an encoded interrupt level to the processor.
Indicates that an interrupt is pending.
Requests an autovector during an interrupt acknowledge cycle.
Indicates that an external device requires bus mastership.
Indicates that an external device may assume bus mastership.
Indicates that an external device has assumed bus mastership.
System reset.
Indicates that the processor should suspend bus activity.
Indicates that an erroneous bus operation is being attempted.
Dynamically disables the on-chip cache to assist emulator support.
Dynamically disables the translation mechanism of the MMU.
Indicates when the MC68030 is beginning to fill pipeline.
Indicates the state of the microsequencer
Clock input to the processor.
Power supply.
Ground connection
MOTOROLA
MC68030 USER’S MANUAL
5-3