CD2481 Datasheet, PDF (34/222 Pages) Intel Corporation – Programmable Four-Channel Communications Controller

CD2481 — Programmable Four-Channel Communications Controller
Modem End of Interrupt Register (MEOIR)
85 86 B W
0
0
SetTm2
SetTm1
0
0
0
0
4.2.6
DMA Registers
DMA Mode Register (DMR)
F4 F6 F8 W
EnSync
0
0
0
ByteDMA
0
0
0
Bus Error Retry Count (BERCNT)
8D 8E B R/W
Binary Value
DMA Buffer Status (DMABSTS)
1A 19 B R
TDAligr
4.2.6.1
RstApd
CrtBuf
Append
DMA Receive Registers
Ntbuf
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)
Tbusy
Nrbuf
Rbusy
40 42 W R/W
42 40 W R/W
44 46 W R/W
46 44 W R/W
48 4A W R/W
4A 48 W R/W
4C 4F B R/W
4D 4E B R/W
Berr
EOF
EOB
0
0
0
0
2481own
4.2.6.2
Receive Current Buffer Address Lower (RCBADRL) 3C 3E W R
Receive Current Buffer Address Upper (RCBADRU) 3E 3C W R
DMA Transmit Registers
A Transmit Buffer Address Lower (ATBADRL)
A Transmit Buffer Address Upper (ATBADRU)
50 52 W R/W
52 50 W R/W
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Datasheet