HD64570 Datasheet, PDF (468/469 Pages) Hitachi Semiconductor – Serial Communications Adaptor

Address
Register
CPU CPU
Mode Mode
0, 1 2, 3 Remarks
DMAC (Channel 3)
DMA Command Register F5H F4H
Channel 3: DCR
Channel 3
7
6
5
4
3
2
1
0
Single-block
transfer mode _—
—
—
—
—
— DCMD1DCMD0
Chained-block
transfer mode
Read/Write
Initial value
—— ————W W
—— ——————
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
F6H
F7H
F8H
F9H
FAH
FBH
FCH
FDH
FEH
FFH
F7H
F6H
F9H
F8H
FBH
FAH
FDH
FCH
FFH
FEH
Command specification
01: Software abort
10: Frame end interrupt
counter cleared
Others: Reserved
Rev. 0, 07/98, page 452 of 453