SimCom T900 - Audio Interface

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Figure 13: Dimensions of 10-line cable
Table 5: signal assignment of 10 pin cable
Connecting diagram
Terminal signal
P1
Wire color and cutting
length
Signal name I/O Comments
1 Green GPIO3 I/O
2 Yellow GPIO1 I/O
Configurable
by AT
commands
3 Black GND Ground
4 Orange SPK+ O
5 Brown MIC+ I
6 White GPIO4 I/O
7 Gray GPIO2 I/O
Configurable
by AT
commands
8 Red ADC I
9 Purple SPK- O
10 Blue
1007 26#
MIC- I
6.3.1 Audio interface
T900 has one pair of audio input and audio output; it can be connected to a handset directly.
T900_User Guide_V1.02 17 2013-05-22