General Purpose Inputs And Outputs; Figure 4: Gpi Input Circuitry; Figure 5: Gpo Output Circuitry - evertz 7700 Manual

7700 MultiFrame Manual
7710XUC-HD HD Format Up/Down/Cross Converter
2.5.

GENERAL PURPOSE INPUTS AND OUTPUTS

On all versions of the module, a 6-pin connector labeled GPIO contains four GPI/O inputs.
J80
+ 5 + 12
VDC VDC
3.6 K
to
internal
circuit
GPI
GPI
Command
GND

Figure 4: GPI Input Circuitry

The GPO is active low with internal pull up (10k Ohm) resistors to +5 V. When the output goes low, it is
able to sink up to 10 mA. When the output is high, the signal will go high (+5V). Do not draw more than
100µA from the output. Figure 5 shows the circuit for the general-purpose output. The GPO output is
not used at this time.
+ 5 Volts
10 K
10 ohm
GPO
From Internal
Circuit
GND

Figure 5: GPO Output Circuitry

7710XUC-HD
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Revision 1.0