32 Kz crystal stabilisation time

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hrg
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32 Kz crystal stabilisation time

Hi Dialog Team

For 32 Khz crystal operation under Boost mode ,it takes 2 secs to stabilise . The stabilisation time is provided in rwip.c file .Is there any other file where the delay is mentioned other than rwip.c ????

JE_Dialog
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Hello hrg, i will check that

Hello hrg, i will check that out for you : I dont have the data available , so i need to cehck with the design team. I woudl anticipate its much fater than 2secs, but let me check !

BR JE_Dialog

JE_Dialog
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Hello hrg, i can confirm the

Hello hrg, i can confirm the  Xtal32k is switched on by the bootrom to allow it to settle. Allowed time for this is 2 sec, hence the increased current in PowerProfiler the first 2 seconds. Note this is for cold boot only... in coming from deep sleep or extended sleep, this is not required. BR JE_Dialog

hrg
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Thankyou JE_Dialog.

Thankyou JE_Dialog.
To be more clear ,is there any part of code which provides the delay of 2 sec . or is it hardware delay ? i can see that in rwip.c there is crystal delay value of 3200 . so apart from this is there any other part in the code where the stabilisation delay is given ??

Also please note that during wake up from deep sleep ,the cold boot happens with the same stabilisation time(may be it is doing reset on wakeup ) ! in OTP mode !! ( in SRAM mode this doesnt happens !!)

JE_Dialog
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Hello hrg, its controlled

Hello hrg, its controlled from the BOOT ROM so its not configurable (think of it as a hardware delay). let me check on the deep sleep vs extended sleep, i might be mistaken.. BR JE_Dialog