Figure 2-5: Gpi Input Circuitry; Figure 2-6: Gpo Output Circuitry - evertz MultiFrame 7814 Series User Manual

7800/7700 MultiFrame Manual
7814 Series Dual HDTV Up/Down/Cross Converters
When a particular GPIO is configured to be a GPI, the following interface shall apply:
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 2-6 shows the circuit for the general-purpose output.
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GPI
GPI
Command
GND

Figure 2-5: GPI Input Circuitry

From Internal
Circuit

Figure 2-6: GPO Output Circuitry

Revision 1.1.3
+ 5
VDC
3.6 K
to
internal
circuit
+ 5 Volts
10 K
10 ohm
GPO
GND