Using gpio and readerenable, Gpio, Gpio logic voltage levels – ThingMagic Vega User Manual
Page 11: Inputs, Outputs, Belo
Using GPIO and ReaderEnable
ThingMagic Vega Set Up Guide
11
Using GPIO and ReaderEnable
Two general purpose inputs, one general purpose output and the ReaderEnable input are
provided through a 6 position Tyco Amp 1445049-6 Connector (Mating Shell: 1445022-6,
Mating Contact: 794610-3). GPIO describes the pin out for this connector.
GPIO
The GPIO signals can be accessed using the Config tab on Reader Assistant as
described in the previous section.
Table 3: GPIO connector pin out
GPIO Logic Voltage Levels
The following are the voltage levels between Ground (Green) and the input or output pin
for logic high and low:
Inputs
Low - apply a signal between 0 and 0.8 V
High - apply a signal between 2 and 5 V
Outputs
Low - outputs a maximum 0.4 V and will sink 12mA
High - outputs a minimum of 2.4 V and will source 12mA.
Pin Number/
Wire Color
Direction
Vmin
Vmax
Description
1 - J2 White
Input
-0.5
5.5
GPI 1
2 - J2 Brown
Input
-0.5
5.5
GPI 2
3 - J2 Yellow
Output
0
3.6
GPO 2
Note:
This is not an open collector
output. It is a 74LVC244A output.
4 - J2 Blue
Input
-0.5
Vin + 0.5
ReaderEnable2
5 - J2 Purple
In/Out
8
16
+12V (same as Vin)
6 - J2 Green
In/Out
0
0
Ground