ECM-3455J User’s Manual
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1.8.5 LPT/ GPIO Selection for header “LPT_GPIO”: LPT_SEL
This jumper selects will designate the function of “LPT_GPIO” header in “LPT” or “GPIO”.
1.8.6 GPIO Power Select: GPIO_PWRSEL
When “LPT_GPIO” header is set in GPIO mode, this jumper selects its pin #10, 12 “GPIOPWR”
(GPIO Power) at the level of +12V or +5V (default).