User I/O (J13); Table 16. User I/O Pinouts - VersaLogic Tetra VL-EPC-2700 Hardware Reference Manual

User I/O (J13)

Table 16. User I/O Pinouts

Pin Signal
1 AUD_LIN
3 GND_AUD
5 AUD_ROUT
7 PB_CTL_PWR#
9 PB_CTL_RST#
11 PLED#
13 LED_ETH_GRN#
15 WDOG1#
17 GPIO1
19 GND
21 GPIO4
23 GPIO5
25 GND
27 GPIO8
29 V_BATT
31 GND
33 V_MAIN
24
Description
Audio Left Line Input (Stereo
Left Input)
Analog Audio Ground
Audio Right Line Output
(Stereo Right Output)
Open-Drain Push Button
Control Power Input
Open-Drain Push Button
Control Reset Input
Open-Drain 3.3V max
Programmable LED driver
Open-Drain 3.3V max Ethernet
LED driver
Watch dog 1 Output
3.3V General Purpose I/O
Ground
3.3V General Purpose I/O
3.3V General Purpose I/O
Ground
3.3V General Purpose I/O
Battery Input (3.0V Coin Cell)
Ground
V_MAIN power. Voltage can be
8V to 17V (default 12V).
Interfaces and Connectors
Pin Signal
2 AUD_RIN
4 AUD_LOUT
6 GND_AUD
8 GND
10 GND
12 V3P3
14 V3P3
16 GND
18 GPIO2
20 GPIO3
22 GND
24 GPIO6
26 GPIO7
28 GND
30 RETURN_BATT/GND
32 GND
34 V_MAIN
Tetra (VL-EPC-2700) Reference Manual
Description
Audio Right Line Input (Stereo
Right Input)
Audio Left Line Output (Stereo
Left Output)
Analog Audio Ground
Ground (for PB_CTL_PWR#)
Ground (for PB_CTL_RST#)
3.3V power for Programmable
LED
3.3V power for Ethernet LED
Ground
3.3V General Purpose I/O
3.3V General Purpose I/O
Ground
3.3V General Purpose I/O
3.3V General Purpose I/O
Ground
Tied to GND on CPU board and
direct to the battery minus
terminal on a paddleboard or
external battery connector.
Ground
V_MAIN power. Voltage can be
8V to 17V (default 12V).