HD64570 Datasheet, PDF (450/469 Pages) Hitachi Semiconductor – Serial Communications Adaptor

Address
Register
CPU CPU
Mode Mode
0, 1 2, 3 Remarks
DMAC (Channel 0)
Current Descriptor
88H 89H
Address Register Channel
0: CDAL Channel 0
H
L
15
87
0
Current Descriptor
89H 88H
Address Register Channel
0: CDAH Channel 0
Error Descriptor Address 8AH 8BH
Register Channel 0: EDAL
Channel 0
Single-block transfer
mode
Chained-block
transfer mode
Not used
CDAH
Not used
CDAL
H
L
15
87
0
Error Descriptor Address 8BH 8AH
Register Channel 0: EDAH
Channel 0
Receive Buffer Length
Register Channel 0: BFLL
Channel 0
8CH
8DH
Single-block transfer
mode
Chained-block
transfer mode
Not used
EDAH
Not used
EDAL
H
L
15
87
0
Receive Buffer Length
8DH
Register Channel 0: BFLH
Channel 0
8CH
Single-block transfer
mode
Chained-
block trans-
fer mode
Memory to
MSCI
MSCI to
memory
Not used
Not used
BFLH
Not used
Not used
BFLL
Rev. 0, 07/98, page 434 of 453