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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
BFTXP
BFTXN
BFRXP
BFRXN
VBAT
DETECT
CTS
RTS
DSR
DTR
TXD1
TXD2
GND
RXD1
DCD
RXD2
CHARGER
Ref. SCT U38 SSC DTS 0020 – Index A - May 4, 2004
1
PIN No.
1
Differential input from microphone
Differential input from microphone
2
Differential output to earphone
3
4
Differential output to earphone
5
POWER SUPPLY IMAGE VOLTAGE, connect this signal
to «CHARGER» (pin n° 1) to switch the module on.
6
Accessories detection
7
Clear To Send
8
Request To Send
9
Data Send Ready
10
Data Terminal Ready
UART transmit 1
11
UART transmit 2
12
13
ZERO VOLT
14
UART receive 1
RI
15
Ring Indicator
16
Data Carrier Detect
17
UART receive 2
18
Phone set power ON and power supply signal.
Technical Site Documentation - myC-3/ myC-3b
18
GSM
Connector
SIGNAL FUNCTION
2-7
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