CD2231 Intel Corporation, CD2231 Datasheet - Page 30

• 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
30
Receive Interrupt Status Register (RISR)
Receive Interrupt Status Register low (RISRl)
HDLC Mode
Asynchronous Mode
Async-HDLC / PPP / MNP4 Mode
SLIP Mode
Receive Interrupt Status Register high (RISRh)
Receive FIFO Output Count (RFOC)
Receive Data Register (RDR)
Receive End of Interrupt Register (REOIR)
Asynchronous and HDLC Modes
Async-HDLC / PPP / SLIP / MNP4 Modes
TermBuff
TermBuff
Timeout
Berr
D7
0
0
0
0
DiscExc
DiscExc
SCdet2
EOF
EOF
EOF
EOF
D6
0
SetTm2
SetTm2
SCdet1
RxAbt
RxAbt
EOB
D5
0
0
SetTm1
SetTm1
SCdet0
RxCt4
CRC
CRC
D4
0
0
NoTrans
NoTrans
BA/BB
RxCt3
OE
OE
OE
OE
D3
8A
8A
8B
33
F8
87
Reslnd
RxCt2
Gap2
FE
FE
D2
PE
0
0
89
88
88
30
F8
84
RxCt1
Gap1
B
B
W
B
B
B
D1
FE
0
0
0
0
0
R
R
R
R
R
W
Datasheet
Break
ClrDct
Break
RxCt0
Break
Gap0
D0
0
0