Matrix-orbital GLK19264-7T-1U Manual do Utilizador descarregar pdf (Página 13)

2.1 DB-9 Connector - For Non-USB modules only

The GLK19264-7T-1U provides a DB-9 Connector to readily interface with serial devices which use the

EIA232 standard signal levels of ±30V. It is also possible to communicate at TTL levels of 0 to +5V by

setting the Protocol Select Jumpers to TTL. As an added feature it is also possible to apply power through

pin 9 of the DB-9 Connector in order to reduce cable clutter. However, in order to accomplish this you must

set the Power Through DB-9 Jumper.

Pin 2 TX/SDA (I2C data)

Pin 3 RX/SCL (I2C clock)

Pin 5 GND

9 PWR (Must solder power through

DB-9 jumper. See table ?? on

page ?? for power requirements.)

Figure 13: RS-232 Pin-out

2.1.1 Power Through DB-9 Jumper - for Non-USB modules only

In order to provide power through pin 9 of the DB-9 Connector you must place a solder jumper on the

Power through DB-9 Jumper pictured in Figure 14 below. The GLK19264-7T-1U allows all voltage models

to use the power through DB-9 option, see table ?? for display module voltage requirements.

Figure 14: Power Through DB-9 Jumper

Matrix Orbital GLK19264-7T-1U 8

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Matrix-orbital GLK19264-7T-1U Manual do Utilizador Página 13