
20
3.4 Serial Ports
POS-566/566L offers four high speed NS16C550 compatible
UARTs with Read/Receive 16 byte FIFO serial ports. These ports
can be connected to pointing devices or other serial devices
(COMA/COMB/COMC/COMD).
•
CN23/CN19/CN18/CN16: Serial Port 10-pin Header
Connector (COMA/COMB/COMC/COMD)
PIN NO. DESCRIPTION
1
DATA CARRIER DETECT (DCD) /TX–
2
RECEIVE DATA (RXD) /TX+
3
TRANSMIT DATA (TXD)
4
DATA TERMINAL READY (DTR)
5
GROUND (GND)
6
DATA SET READY (DSR) /RX+
7
REQUEST TO SEND (RTS) /RX–
8
CLEAR TO SEND (CTS)
9
RING INDICATOR (RI)
10
N/C
•
CN17/CN15 : Serial Port DB-9 Male Connector (COMA/COMB)
PIN NO. DESCRIPTION
1
DATA CARRIER DETECT (DCD) /TX-
2
RECEIVE DATA (RXD)
/TX+
3
TRANSMIT DATA (TXD)
4
DATA TERMINAL READY (DTR)
5
GROUND (GND)
6
DATA SET READY (DSR)
/RX+
7
REQUEST TO SEND (RTS) /RX-
8
CLEAR TO SEND (CTS)
9
RING INDICATOR (RI)
Содержание POS 566
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