MTX-GTW
www.mtxm2m.com
www.matrix.es
2015/08 v1.6
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MTX Terminals® by MATRIX ELECTRONICA S.L.U
5.1.1.5
RS232 2
The AUART1 interface of the TQMA28 drives the RS232 interface of the MTX-GTW by default. The
Maxim MAX3222 is used as a driver.
Transfer rate:
Up to 250Kbit/s
Interface on module: AUART1
Handshake:
None
ESD protection:
±15kV human body model
The following tables show the configuration of the DB15 of the RS232_2 interface.
DB15 Connector pinout:
Pin
Signal
Type
Remark
12
TXD2
O
Transmit Data
13
RXD2
I
Receive Data
14
GND
P
Ground
5.1.1.6
CAN
The CAN 0 port of the TQMA28 directly drives the interface on the MTX-GTW. The NXP TJA1051T/3 is
used as a CAN transceiver.
Transfer rate:
Up to 1Mbit/s
Interface on module: CAN_0
Signal characteristic:
Compatible with the ISO-11898 standard (CAN 2.0B)
ESD protection:
±8kV human body model
The following tables show the configuration of the DB15 of the CAN interface.
