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: 22/178页
文件大小: 2247K
代理商: SCD223110QCD
CD2231 — Intelligent Two-Channel LAN and WAN Communications Controller
118
Datasheet
8.4.3.1
CSR — HDLC Mode
Bit 7
Receiver enable
0 = Receiver is disabled
1 = Receiver is enabled
Bit 6
Rx flag
0 = Currently not receiving flag/sync
1 = Currently receiving flag/sync
Bit 5
Rx frame
0 = Currently not receiving frame
1 = Currently receiving frame
Bit 4
Rx mark
0 = Currently not receiving continuous mark
1 = Currently receiving continuous mark
Bit 3
Transmitter enable
0 = Transmitter is disabled
1 = Transmitter is enabled
Bit 2
Tx flag
0 = Currently not transmitting flag
1 = Currently transmitting flag
Bit 1
Tx frame
0 = Currently not transmitting frame
1 = Currently transmitting frame
Bit 0
Tx mark
0 = Currently not transmitting continuous ones
1 = Currently transmitting continuous ones
8.4.3.2
CSR — Async Mode
If the host determines that a flow control state is inappropriate, it can be cleared by enabling or
disabling the transmitter or receiver by CCR command.
Register Name: CSR
Register Description: Channel Status
Default Value: x’00
Access: Byte Read/Write
Intel Hex Address: x’19
Motorola Hex Address: x’1A
Bit 7Bit 6Bit 5
Bit 4
Bit 3Bit 2Bit 1Bit 0
RxEn
RxFlag
RxFrame
RxMark
TxEn
TxFlag
TxFrame
TxMark
Register Name: CSR
Register Description: Channel Status
Default Value: x’00
Access: Byte Read/Write
Intel Hex Address: x’19
Motorola Hex Address: x’1A
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
RxEn
RxFloff
RxFlon
0
TxEn
TxFloff
TxFlon
0
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