HD64570 Datasheet, PDF (465/469 Pages) Hitachi Semiconductor – Serial Communications Adaptor

Address
Register
CPU CPU
Mode Mode
0, 1 2, 3 Remarks
DMAC (Channel 3)
Current Descriptor
E8H E9H
Address Register Channel
3: CDAL Channel 3
H
L
15
87
0
Current Descriptor
E9H E8H
Address Register Channel
3: CDAH Channel 3
Single-block transfer
mode
Chained-block
transfer mode
Not used
CDAH
Not used
CDAL
Error Descriptor Address EAH
Register Channel 3: EDAL
Channel 3
EBH
H
L
15
87
0
Error Descriptor Address EBH
Register Channel 3: EDAH
Channel 3
EAH
Not used
Not used
ECH EDH
EDH ECH
Byte Count Register
Channel 3: BCRL
Channel 3:
EEH EFH
Single-block transfer
mode
Chained-block
transfer mode
Not used
EDAH
Not used
EDAL
H
L
15
87
0
Byte Count Register
Channel 3: BCRH
Channel 3
EFH EEH
Single-block transfer
mode
Chained-block
transfer mode
BCRH
BCRL
Rev. 0, 07/98, page 449 of 453