HD64570 Datasheet, PDF (454/469 Pages) Hitachi Semiconductor – Serial Communications Adaptor

Register
DMAC (Channel 1)
Buffer Address Register
Channel 1: BARL
Channel 1
Buffer Address Register
Channel 1: BARH
Channel 1
Buffer Address Register
Channel 1: BARB
Channel 1
Address
CPU CPU
Mode Mode
0, 1 2, 3 Remarks
A0H A1H
B
H
L
23
16 15
87
0
A1H A0H
A2H A3H
Single-block transfer
mode
Chained-block
transfer mode
Not used
BARB
Not used
BARH
Not used
BARL
Not used
A3H A2H
Source Address Register A4H A5H
Channel 1: SARL Channel
1 (Chain Pointer Base
Channel 1: CPB Channel 1)
Source Address Register A5H A4H
Channel 1: SARH Channel
1 (Chain Pointer Base
Channel 1: CPB Channel 1)
B
H
L
23
16 15
87
0
Single-block transfer
mode
Chained-block
transfer mode
SARB
CPB
SARH
Not used
SARL
Not used
Source Address Register A6H A7H
Channel 1: SARB Channel
1 (Chain Pointer Base
Channel 1: CPB Channel 1)
Not used
A7H A6H
Rev. 0, 07/98, page 438 of 453