Typewriter User Manual

3- 12 MC68340 USER’S MANUAL MOTOROLA
CLKOUT
A31–A0
FC3–FC0
SIZ0
SIZ1
D15–D8
D7–D0
R/W
AS
DS
DSACK0
DSACK1
S0
S2 S4
S0 S2 S4 S0 S2 S4 S0 S2 S4
4 BYTES
OP0
OP1
OP2 OP3
(OP3) (OP3)
(OP1)
(OP1)
WRITE WRITE WRITE WRITE
LONG-WORD OPERAND WRITE TO 8-BIT BUS
2 BYTES
1 BYTE
3 BYTES
Figure 3-4. Long-Word Operand Write Timing to 8-Bit Port
3.2.3.7 LONG-WORD OPERAND TO 16-BIT PORT, ALIGNED. Figure 3-5 shows both
long-word and word read and write timing to a 16-bit port.
LONG-WORD OPERAND
DATA BUS
CYCLE 1
CYCLE 2
DSACK0DSACK1A0SIZ0SIZ1
0000X
1000X
OP1OP0 OP2 OP3
31 23 15 7 0
D0D8D15 D7
OP0 OP1
OP2
OP3
Frees
cale Semiconductor,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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