HD64570 HITACHI [Hitachi Semiconductor], HD64570 Datasheet - Page 96

• Manufacturer Part Number: HD64570
• Description: Serial Communications Adaptor
• Manufacturer: HITACHI [Hitachi Semiconductor]

Rev. 0, 07/98, page 80 of 453
CLK
A to A
AS
HDS, LDS
WAIT
R/W
D to D
(Out)
D to D
(In)
1
0
0
Figure 3.17 Master Mode Bus Timing Sequence in CPU Modes 2 and 3
23
15
15
CLK
A to A
AS
HDS, LDS
WAIT
R/W
D to D
(Out)
D to D
(In)
0
0
1
23
15
15
T
1
DMA read cycle
Memory address
T
T
2
DMA read cycle
1
Memory address
T
W
With T
T
No T
2
Data
latch point
Data
latch point
W
T
W
3
T
states
3
states
Transmit data
Transmit data
T
T
DMA write cycle
1
DMA write cycle
1
Memory address
Memory address
Receive data
T
T
Receive data
2
2
T
W
T
3
T
3