MC68030 Datasheet, PDF (158/602 Pages) Motorola, Inc – ENHANCED 32-BIT MICROPROCESSOR

Table 7-5. MC68030 Internal to External Data Bus.
(Table did not make it over in the conversion from Word)
Bus Operation
31
OP0
LONG WORD OPERAND
OP1
OP2
D31
DATA BUS
D16
0
OP3
WORD MEMORY
MSB
LSB
OP0
OP1
OP2
OP3
MC68EC030
SIZ1 SIZ0
A1
A0
0
0
0
0
1
0
1
0
MEMORY CONTROL
DSACK1
L
DSACK0
H
L
H
Figure 7-5. Example of Long-Word Transfer to Word Port
MOTOROLA
MC68030 USER’S MANUAL
7-11