17
MTX-Gateway | 2019/4
MTX © by MATRIX ELECTRONICA S.L.U.
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1.1.5 RS232_1
The AUART3 interface of the TQMA28 drives the RS232 interface of the MTX-Gateway by default. The
Maxim MAX3221EEAE is used as a driver.
TQMa28
DB15
(J6/J16)
MAX3221
(Uu1)
Pluggable
terminal
(J12)
Transfer rate:
Up to 250Kbit/s
Interface on module: AUART3
Handshake:
None
ESD protection:
±15kV human body model
The following tables show the configuration of the DB15 and Pluggable Terminals of the RS232_1
interface.
DB15 Connector pinout (J6/J16):
PIN
SIGNAL
TYPE
REMARK
4
TXD1
O
Transmit Data
9
RXD1
I
Receive Data
14
GND
P
Ground