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16
MTX-GTW II | 2017/12
MTX © by MATRIX ELECTRONICA S.L.U.
mtxm2m.com | [email protected]
Transfer rate:
Up to 250Kbit/s
Interface on module: UART5
Handshake:
RTS/CTS or XON/XONFF
ESD protection:
±15kV human body model
In order to supply power for external sensor connection, the pin 4 of the DB9 male connector can be
grounded or connected to 5V throught a protection diode.
The signal that controls pin 4 state is routed to GPIO expander chip in order to set its state from iMX6UL-
IND/IOT using I2C bus. The following figure shows pin 4 output schematic.
GPIO IN RS 0
+5V
DB CTS0
DB TXD0
DB RTS0
DB RXD0
Rc111
2K2
2K2
Rc106
DMP3099L-7
Qc10
BSS138W
Qc9
Dc12
SS16
DB9 X2
5B
9B
4B
8B
3B
7B
2B
6B
1B
S
D
G
2
3
A
K
D
I
G
S
When the pins of COM2 are joined using a shunt, pin 9 of this DB9 connector is joined to pin 4.