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AM3517 Display subsystem

Other Parts Discussed in Thread: AM3517

Hi,

I have one question.

According to TRM(sprugr0b) 12.5.1 Display Subsystem Reset, it is written as the following.

1. If the LCD is on, stop the LCD by setting the DSS.DISPC_CONTROL[0] LCDENABLE bit to 0.
(a) Reset the frame done status bit by writing 1 in the DSS.DISPC_IRQSTATUS[0] FRAMEDONE bit.
(b) Wait until the DSS.DISPC_IRQSTATUS[0] FRAMEDONE bit is set to 1. This shows that the end of
frame has taken place and the LCD stop is complete.

Is this sequence absolute necessity when softreset executing? If this is absolutely, please tell me the reason also.

Best regards,

Michi