参数资料
型号: SCD223110QCD
厂商: INTEL CORP
元件分类: 微控制器/微处理器
英文描述: 2 CHANNEL(S), 256K bps, SERIAL COMM CONTROLLER, PQFP100
封装: METRIC, QFP-100
文件页数: 174/178页
文件大小: 2247K
代理商: SCD223110QCD
Intelligent Two-Channel LAN and WAN Communications Controller — CD2231
Datasheet
95
.
8.2.4.1
MNP4 Mode
SLIP, MNP4, and Automatic In-Band Flow Control modes are only available on Revision B and
later devices.
Bit 7
Stop2
0 = 1 Stop bit
1 = 2 Stop bit
Bit 6
FCS append
0 = Receive CRC is not passed to the host at the end of the frame
1 = Receive CRC is passed to the host at the end of the frame
Bit 5
RxChk – Receive FCS check enabled
When clear, the channel does not test the 2-byte FCS field. All frame data characters
are given to the host.
When set, the channel tests the 2-byte FCS field.
Bit 4
TxGen – Transmit FCS enabled
When clear, the channel does not add the 2-byte FCS field.
When set, the channel adds the 2-byte FCS field at the end of the frame.
Bits 3:0
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.
npad3
npad2
npad1
npad0
Number of
leading pads
00
0
00
0
1
00
1
0
2
11
1
15
Register Name: COR3
Register Description: Channel Option Register 3
Default Value: x’00
Access: Byte Read/Write
Intel Hex Address: x’15
Motorola Hex Address: x’16
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Stop2
FCSApd
RxChk
TxGen
npad3
npad2
npad1
npad0
npad3
npad2
npad1
npad0
Number of
leading pads
00
0
00
0
1
00
1
0
2
11
1
15
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