HD64570 Datasheet, PDF (458/469 Pages) Hitachi Semiconductor – Serial Communications Adaptor

Address
Register
CPU CPU
Mode Mode
0, 1 2, 3 Remarks
DMAC (Channel 1)
DMA Command Register B5H B4H
Channel 1: DCR Channel 1
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
B6H
B7H
B8H
B9H
BAH
BBH
BCH
BDH
BEH
BFH
B7H
B6H
B9H
B8H
BBH
BAH
BDH
BCH
BFH
BEH
Command specification
01: Software abort
10: Frame end interrupt
counter cleared
Others: Reserved
Rev. 0, 07/98, page 442 of 453