How to auto power on without power key » History » Revision 2
Revision 1 (Lion Wang, 08/06/2021 05:07 PM) → Revision 2/4 (Lion Wang, 08/06/2021 05:07 PM)
h1. How to auto power on without power key
(1) R1022 and R1021 form a bias voltage when turning on, so that Q1003 is turned on
(2) After 2.5 seconds, the software controls HDMI_LEVEL_EN from Low to High to turn on Q1002 & turn Q1003 off
(3) The production line can be Disable auto-power on circuit by short-circuiting TP1003 and TP1004.
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