Technical Site Documentation myC5-2
Ref. SCT U38 SSC DTS 0024 – Index B - February 15, 2005 Page 2-6
2.3 DATA/AUDIO/CHARGE CONNECTOR
2.3.1 Connector description
This connector is located at the bottom of the transmission module and enable the connection to various
accessories. It comprises power supply pins and signals.
2.3.2 Signal description
SYMBOL PIN No.
SIGNAL FUNCTION
BFTXP 1 Differential input from microphone
BFTXN
2
Differential input from microphone
BFRXP 3
Differential output to earphone
BFRXN 4
Differential output to earphone
VBAT
5
POWER SUPPLY IMAGE VOLTAGE, connect this signal
to «CHARGER» (pin n°1) to switch the module on.
DETECT 6 Accessories detection
CTS 7
Clear To Send
RTS 8
Request To Send
DSR 9
Data Send Ready
DTR 10
Data Terminal Ready
TXD1 11
UART transmit 1
TXD2 12
UART transmit 2
GND 13
ZERO VOLT
RXD1 14 UART receive 1
RI 15 Ring Indicator
DCD 16 Data Carrier Detect
RXD2 17 UART receive 2
CHARGER 18 Phone set power ON and power supply signal.
Connector
GSM
1 18
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