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: 5/178页
文件大小: 2247K
代理商: SCD223110QCD
CD2231 — Intelligent Two-Channel LAN and WAN Communications Controller
102
Datasheet
1 = All receive characters, even those with errors, are processed for special charac-
ter/flow control processing.
Bits 4:2
Reserved – must be ‘0’.
Bits 1:0
Transmit processing for CR and NL; these bits define Translation mode when CR
and/or NL are present in the transmit data.
8.2.9
Special Character Registers — Async Modes Only
Special Character registers can be used for detecting specific receive characters in the incoming
data stream, and can be used to transmit characters (by STCR) preempting any data in the transmit
FIFO.
8.2.9.1
Special Character Register 1 (SCHR1)
8.2.9.2
Special Character Register 2 (SCHR2)
Asynchronous Mode
Special characters 1 and 2 are used in conjunction with the SCDE bit COR3[4] to detect incoming
characters; when both SCDE and TxIBE (COR2[6]) are set, they define the in-band flow control
characters XON and XOFF.
ONLCR
OCRNL
0
No special action
0
1
CR translated to NL
1
0
NL translated to the sequence CR NL
11
CR translated to NL and NL translated to the sequence CR
NL
Register Name: SCHR1
Register Description: Special Character Register 2
Default Value: x’00
Access: Byte Read/Write
Intel Hex Address: x’1C
Motorola Hex Address: x’1F
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
User-defined special character,
protocol-defined special characters (see below).
Register Name: SCHR2
Register Description: Special Character Register 2
Default Value: x’00
Access: Byte Read/Write
Intel Hex Address: x’1D
Motorola Hex Address: x’1E
Bit 7Bit 6Bit 5Bit 4Bit 3
Bit 2Bit 1
Bit 0
User-defined special character,
protcol-defined special characters (see below).
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