F71869A
5.10 Scan Code Function
F71869A has 8 GPIO pins (GPIO 35~37, GPIO 50~54) support scan code. These pins can not
only be set to volume up/down, mute and PWM up/down but also any function keys on keyboard.
Because the protocol for these 5 pins is scan code, so we don’t need a driver to connect this
function to OS. If the button for the GPIO has been pressed continuesly over nearly 1 second
(delay time), the GPIO will repeatedly sending this function in an interval of 50 ms (repeat time).
The delay time could be set from 0.5 to 1.5 sec. The repeat time could be set from 50, 100, 250 to
500 ms.
5.11 Over Voltage Protection
F71869A over voltage protection function could protect the damage from voltage spikes via
over voltage protection (OVP) function. Voltage protection function is enabled via setting the
related register. When force mode occurs, the system would shut down and then can not boot at
all. Only re-plugging the power code (cut off VSB) could re-activate or re-boot the system at the
force mode. Please see below table for detail information:
48
Oct., 2011
V0.19P
FINTEK [ FEATURE INTEGRATION TECHNOLOGY INC. ]
