ST7628
7.10 Sleep Out –Command and Self-Diagnostic Functions of the Display Module
7.10.1 Register loading Detection
Sleep Out-command is a trigger for an internal function of the display module, which indicates, if the display
module loading function of factory default values from OTP ROM (or similar device) to registers of the display
controller is working properly.
There are compared factory values of the OTP ROM and register values of the display controller by the display
controller (1st step: compares register and OTP ROM values, 2nd step: loads OTP ROM values to registers). If
those both values (OTP ROM and register values) are same, there is inverted (= increased by 1) a bit, which is
defined in command RDDSDR) (The used bit of this command is D7). If those both values are not same, this
bit (D7) is not inverted (= not increased by 1).
The flow chart for this internal function is following:
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