TC Electronic UpCon - Manual (Page 44)

Appendix 2: UpCon GPI/O page
40 UpCon
Appendix 1: Links and
additional information
– UpCon support page:
www.tcelectronic.com/upcon/support/
– TC Electronic HD Audio YouTube channel:
youtube.com/user/tcelectronicHDaudio
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Electronic broadcast products.
Appendix 2: UpCon
GPI/O page
GPIO Technical specifications
The General Purpose Input/Output (GPIO) con-
nector on the UpCon back panel is configured
as follows:
Fig. 1: GPIO D-SUB connector
Pin No Function
1 GPO 1, contact 1
2 GPO 2, contact 1
3 GPI 2
4 GPI 4
5 3V3 output, 100 mA max
6 GPO 1, contact 2
7 GPO 2, contact 2
8 GPI 1
9 GPI 3
10 3V3 output, 100 mA max
11 Ground
12 Reserved
13 Ground
14 Ground
15 Reserved
Table 1: GPIO pin assignments
The 3V3 output (presented on 2 pins) can be
used for external GPIO network as described be-
low. It is currently limited to 100 mA.
Each of the two GPOs consist of a floating inter-
nal relay than can either be set open (this is the
default setting) or closed. Each relay can handle
200 mA / 24 V AC/DC max.
The four GPI inputs are DC coupled 0 to +3V3
inputs. Inside the processor, 100 kOhm resistors
connect the GPI inputs to +3V3 power supply.
When nothing is connected to the GPI input, the
input voltage therefore is +3V3V. A resistor net-
work can be used to pull down the voltage as
suggested in Fig 3-4.
GPI installation
Selection between up to 8 presets is achieved by
feeding the processor a DC voltage to the GPIO