CD2481 Datasheet, PDF (24/222 Pages) Intel Corporation – Programmable Four-Channel Communications Controller

CD2481 — Programmable Four-Channel Communications Controller
4.1.6
DMA Registers
Name
DMR
BERCNT
DMABSTS
4.1.6.1
Description
DMA Mode Register
Bus Error Retry Count
DMA Buffer Status
DMA Receive Registers
Addr.
Mode ¹
G
G
P
INT ²
F4
8D
1A
MOT ³
F6
8E
19
Size
B
B
B
Access
W
R/W
R
Page
182
182
183
Name
ARBADRL
ARBADRU
BRBADRL
BRBADRU
ARBCNT
BRBCNT
ARBSTS
BRBSTS
RCBADRL
RCBADRU
4.1.6.2
Description
A Receive Buffer Address Lower
A Receive Buffer Address Upper
B Receive Buffer Address Lower
B Receive Buffer Address Upper
A Receive Buffer Byte Count
B Receive Buffer Byte Count
A Receive Buffer Status
B Receive Buffer Status
Receive Current Buffer Address Lower
Receive Current Buffer Address Upper
DMA Transmit Registers
Addr.
Mode ¹
P
P
P
P
P
P
P
P
P
P
INT ²
40
42
44
46
48
4A
4C
4D
3C
3E
MOT ³
42
40
46
44
4A
48
4F
4E
3E
3C
Size
W
W
W
W
W
W
B
B
W
W
Access Page
R/W
184
R/W
184
R/W
185
R/W
185
R/W
186
R/W
186
R/W
186
R/W
187
R
188
R
188
Name
Description
ATBADRL
ATBADRU
BTBADRL
BTBADRU
ATBCNT
BTBCNT
ATBSTS
BTBSTS
TCBADRL
TCBADRU
A Transmit Buffer Address Lower
A Transmit Buffer Address Upper
B Transmit Buffer Address Lower
B Transmit Buffer Address Upper
A Transmit Buffer Byte Count
B Transmit Buffer Byte Count
A Transmit Buffer Status
B Transmit Buffer Status
Transmit Current Buffer Address Lower
Transmit Current Buffer Address Upper
Addr.
Mode ¹
P
P
P
P
P
P
P
P
P
P
INT ²
50
52
54
56
58
5A
5C
5D
38
3A
MOT ³
52
50
56
54
5A
58
5F
5E
3A
38
Size
W
W
W
W
W
W
B
B
W
W
Access Page
R/W
189
R/W
189
R/W
190
R/W
190
R/W
191
R/W
191
R/W
191
R/W
192
R
196
R
196
24
Datasheet