CD2231 Intel Corporation, CD2231 Datasheet - Page 32

• Manufacturer Part Number: CD2231
• Description: CD2231 Intelligent Two-channel Lan And Wan Communications Controller
• Manufacturer: Intel Corporation

CD2231 — Intelligent Two-Channel LAN and WAN Communications Controller
4.2.6.1
4.2.6.2
32
Bus Error Retry Count (BERCNT)
DMA Buffer Status (DMABSTS)
DMA Receive Registers
A Receive Buffer Address Lower (ARBADRL)
A Receive Buffer Address Upper (ARBADRU)
B Receive Buffer Address Lower (BRBADRL)
B Receive Buffer Address Upper (BRBADRU)
A Buffer Receive Byte Count (ARBCNT)
B Buffer Receive Byte Count (BRBCNT)
A Receive Buffer Status (ARBSTS)
B Receive Buffer Status (BRBSTS)
Receive Current Buffer Address Lower (RCBADRL)
Receive Current Buffer Address Upper (RCBADRU)
DMA Transmit Registers
A Transmit Buffer Address Lower (ATBADRL)
A Transmit Buffer Address Upper (ATBADRU)
B Transmit Buffer Address Lower (BTBADRL)
B Transmit Buffer Address Upper (BTBADRU)
A Buffer Transmit Byte Count (ATBCNT)
B Buffer Transmit Byte Count (BTBCNT)
A Transmit Buffer Status (ATBSTS)
B Transmit Buffer Status (BTBSTS)
Async-HDLC/PPP Mode
SLIP/MNP4 Mode
TDAlign
Berr
Berr
Berr
RstApd
EOF
EOF
EOF
CrtBuf
EOB
EOB
EOB
Append
0
0
0
Binary Value
Ntbuf
0
0
0
8D
1A
40
42
44
46
48
4A
4C
4D
3C
3E
50
52
54
56
58
5A
5C
5D
map32
Tbusy
0
0
40
46
44
48
4E
3C
50
56
54
58
5E
8E
19
42
4A
4F
3E
52
5A
5F
Nrbuf
INTR
INTR
B
W
W
W
W
B
B
W
B
W
W
W
W
B
W
W
W
W
W
B
0
R
R
R/W
R/W
R/W
R/W
R/W
R
R/W
R/W
R/W
R/W
R/W
R/W
R
R
R/W
R/W
R/W
R/W
Datasheet
2231own
2231own
2231own
Rbusy