HP gx466 Manuale Utente
ECM-5510
40 ECM-5510 User’s Manual
2.4.16
Serial Port 2 Connector in RS-232 Mode (CN6,
Pin 11-20
)
Signal
PIN
PIN
Signal
DCD2
11
12
DSR2
RxD2 13
14 RTS2
TxD2
15
16
CTS2
DTR2 17
18
RI2/+5V/+12V
GND
19
20
NC
2.4.16.1 Signal
Description
– Serial Port 2 Connector in RS-232 Mode (CN6,
Pin
11-20
)
Signal
Signal Description
TxD
Serial output. This signal sends serial data to the communication link. The signal is
set to a marking state on hardware reset when the transmitter is empty or when
loop mode operation is initiated.
RxD
Serial input. This signal receives serial data from the communication link.
DTR
Data Terminal Ready. This signal indicates to the modem or data set that the
on-board UART is ready to establish a communication link.
DSR
Data Set Ready. This signal indicates that the modem or data set is ready to
establish a communication link.
RTS
Request To Send. This signal indicates to the modem or data set that the on-board
UART is ready to exchange data.
CTS
Clear To Send. This signal indicates that the modem or data set is ready to
exchange data.
DCD
Data Carrier Detect. This signal indicates that the modem or data set has detected
the data carrier.
RI
Ring Indicator. This signal indicates that the modem has received a telephone
ringing signal.