MTX-GTW
www.mtxm2m.com
www.matrix.es
2015/08 v1.6
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MTX Terminals® by MATRIX ELECTRONICA S.L.U
6.1.3
GPIOs
The MTX-GTW-3G is able to support up to 4 GPIOs (IRQ capable) but they are multiplexed with other
interfaces. The following table shows the configuration of the DB15 connector and the multiplexed
interfaces
Pin
Signal
Type
Remark
13
GPI 1
Input
Shared with RX2 signal (GPIO3_4)
9
GPI 2
Input
Shared with RX1 signal (GPIO3_12)
15
GPI 3
Input
Incompatible with Relay NA signal (GPIO2_26)*
11
GPO 1
Output
Incompatible with Relay COM signal (GPIO2_24)*
*Mounting Option
6.1.4
Accelerometer
The MTX-GTW-3G includes the LIS331DLH ultra low power high performance 3-axes I2C
accelerometer.
The following table shows the Accelerometer I2C configuration
I2C Bus
Position
Device
Address
1
MTX-GTW
LIS331DLH
0x19
6.1.5
Antennas configuration
The MTX-GTW-3G has two external antenna connectors for the 3G and WiFi interfaces.
