CD2401 Intel, CD2401 Datasheet - Page 95

• Manufacturer Part Number: CD2401
• Description: Multi-protocol Communications Controller
• Manufacturer: Intel

Datasheet
Register Name: COR1
Register Description: Channel Option 1
Default Value: x’00
Access: Byte Read/Write
Parity
Bit 7
COR1 — Asynchronous, Bisync, and X.21 Modes
Bit 7
Bits 6:5
Bit 4
Bits 3:0
ParM1
Bit 6
Parity
1 = odd parity
0 = even parity
Parity mode 1 and 0 – Defines Parity mode for both transmitter and receiver.
Ignore parity
0 = evaluate parity on received characters.
1 = no parity evaluation of received characters.
Character Length [3:0]
ParM0
Bit 5
ParM1
Chl3
0
0
0
0
0
0
1
1
Chl2
1
1
1
1
ParM0
Ignore
Bit 4
0
1
0
1
Multi-Protocol Communications Controller — CD2401
Chl1
0
0
1
1
None
Force (odd parity = force 1, even = force 0)
Normal
Reserved
Bit 3
Chl3
Chl0
0
0
1
0
Character Length in Bits
Parity
Bit 2
Chl2
5
6
7
8
Motorola Hex Address: x’10
Bit 1
Chl1
Intel Hex Address: x’13
Bit 0
Chl0
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