CD2231 Intel Corporation, CD2231 Datasheet - Page 97

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

8.2.4.3
8.2.4.4
Datasheet
Register Name: COR3
Register Description: Channel Option Register 3
Default Value: x’00
Access: Byte Read/Write
Register Name: COR3
Register Description: Channel Option Register 3
Default Value: x’00
Access: Byte Read/Write
ESCDE
Stop2
Bit 7
Bit 7
SLIP Mode
SLIP, MNP4, and Automatic In-Band Flow Control modes are only available on Revision B and
later devices.
Bit 7
Bits 6:4
Bits 3:0
Asynchronous Mode
Bit 7
Bit 6
RngDE
Bit 6
Bit 6
0
Intelligent Two-Channel LAN and WAN Communications Controller — CD2231
Stop2
0 = 1 Stop bit
1 = 2 Stop bit
Reserved – must be ‘0’.
npad3, npad2, npad1, npad0 – Transmit frame leading pads
The number of character times preceding any frame transmission. A character time
is 10 bit times. All zeros in this field disables the leading pads.
ESCDE – Extended special character detect enable
0 = Special character detect for SCHR3 and SCHR4 is disabled.
1 = Special character detect for SCHR3 and SCHR4 is enabled; a special character
interrupt is generated following the receipt of a character matching SCHR3 or
SCHR4.
RngDE – Range detect enable
0 = Range detect disabled.
1 = Characters between SCRl and SCRh (inclusive) generate special character inter-
rupts.
Bit 5
Bit 5
FCT
0
npad3
0
0
0
1
SCDE
Bit 4
Bit 4
npad2
0
0
0
0
1
npad3
Splstp
npad1
Bit 3
Bit 3
0
0
1
1
npad2
Stop2
npad0
Bit 2
Bit 2
0
1
0
1
Motorola Hex Address: x’16
Motorola Hex Address: x’16
leading pads
npad1
Stop1
Bit 1
Number of
Bit 1
Intel Hex Address: x’15
Intel Hex Address: x’15
15
0
1
2
npad0
Stop0
Bit 0
Bit 0
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