CD2231

Manufacturer Part NumberCD2231
DescriptionCD2231 Intelligent Two-channel Lan And Wan Communications Controller
ManufacturerIntel Corporation
CD2231 datasheet
 
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Intelligent Two-Channel LAN and WAN Communications Controller — CD2231
8.2.2.2
COR1 — Asynchronous Mode
Register Name: COR1
Register Description: Channel Option Register 1
Default Value: x’00
Access: Byte Read/Write
Bit 7
Bit 6
Bit 5
Parity
ParM1
ParM0
Bit 7
Parity
1 = odd parity
0 = even parity
Bits 6:5
Parity mode 1 and 0
Defines Parity mode for both transmitter and receiver
Bit 4
Ignore – Ignore parity
0 = evaluate parity on received characters
1 = do not evaluate parity on received characters
Bits 3:0
Character Length
NOTE: Not used in PPP, MNP 4, and SLIP modes.
Datasheet
Bit 4
Bit 3
Ignore
Chl3
ParM1
ParM0
0
0
none
0
1
force (odd = force 1, even = force 0)
1
0
normal
1
1
reserved
Chl3
Chl2
Chl1
Chl0
0
1
0
0
0
1
0
1
0
1
1
0
0
1
1
1
Intel Hex Address: x’13
Motorola Hex Address: x’10
Bit 2
Bit 1
Bit 0
Chl2
Chl1
Chl0
Parity
Character Length Bits
5
6
7
8
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