參數(shù)資料
型號(hào): MCS7840
廠商: Electronic Theatre Controls, Inc.
英文描述: USB-2.0 to Four Serial Ports
中文描述: 的USB 2.0 4個(gè)串行端口
文件頁(yè)數(shù): 31/41頁(yè)
文件大?。?/td> 447K
代理商: MCS7840
MCS7840
USB-2.0 to Four Serial Ports
Rev.
1.2
Page 31
Serial Port 1 – Device Con
fi
guration Register 0
Bit[7]
Bit[6]
IrDA_
Mode
Bit[5]
Bit[4]
Bit[3]
Bit[2]
Bit[1]
Bit[0]
RS_
SDM
Reserved
RTS_
CM
GPIO_
Mode
Reserved
DCR0
Bit
Name
De
fi
nition
Default
Value
0
RS_
SDM
RS-232 / RS-422 / RS-485
Transceiver Shut-Down Mode:
0:
Do not shut down the transceiver
Even when USB SUSPEND is engaged
1:
Reserved
00:
Shut down the transceiver
when USB SUSPEND is engaged
1
1
Reserved
0
[3:2]
GPIO_
Mode
GPIO = Input
10:
GPIO = Output
00
[5:4]
RTS_
CM
RTSM RTS Control Method:
00:
RTS is controlled by Control Bit Map.
Signal is active low;
01:
RTS is controlled by Control Bit Map.
Signal is active high;
10:
Drive RTS active
when Downstream Data Buffer is NOT EMPTY;
Otherwise Drive RTS inactive.
11:
0:
1:
Drive RTS inactive
when Downstream Data Buffer is NOT EMPTY;
Otherwise Drive RTS active.
RS-232 / RS-422 / RS-485 Serial Port Mode.
IrDA Mode.
Reserved
00
6
IrDA_
Mode
Reserved
0
7
0
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