Figure 2-2 : Gpi Input Circuitry; Figure 2-3 : Gpo Output Circuitry - evertz 7814UDX-4K Series User Manual

7814UDX-4K Series
HD/3G/UHD Up/Down/Cross Converters
When a particular GPIO is configured to be a GPI, the following interface shall apply (Figure 2-2):
+ 5
VDC
3.6 K
to
internal
circuit
GPI
GPI
Command
GND

Figure 2-2 : GPI Input Circuitry

When a particular GPIO is configured to be a GPO, the interface shown below shall apply. The GPO is
active low with internal pull up (10k Ohm) resistors to +5V. When the output goes low, it is able to sink up
to 10mA. When high, the signal will go high (+5V). Do not draw more than 100µA from the output.
Figure 2-3 shows the circuit for the general-purpose output.
+ 5 Volts
10 K
10 ohm
GPO
From Internal
Circuit
GND

Figure 2-3 : GPO Output Circuitry

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