HD64570 Datasheet, PDF (460/469 Pages) Hitachi Semiconductor – Serial Communications Adaptor

Address
Register
CPU CPU
Mode Mode
0, 1 2, 3 Remarks
DMAC (Channel 2)
Current Descriptor
C8H
Address Register Channel
2: CDAL Channel 2
C9H
H
L
15
87
0
Current Descriptor
C9H
Address Register Channel
2: CDAH Channel 2
C8H
Single-block transfer
mode
Chained-block
transfer mode
Not used
CDAH
Not used
CDAL
Error Descriptor Address
Register Channel 2: EDAL
Channel 2
CAH
CBH
H
L
15
87
0
Error Descriptor Address CBH
Register Channel 2: EDAH
Channel 2
CAH
Single-block transfer
mode
Chained-block
transfer mode
Not used
EDAH
Not used
EDAL
Receive Buffer Length
Register Channel 2: BFLL
Channel 2
CCH
CDH
H
L
15
87
0
Receive Buffer Length
Register Channel 2: BFLH
Channel 2
CDH
CCH
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 444 of 453