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How to verify LPOFF_Auto_WU worked?

Question asked by 新光 王 on Nov 4, 2019
Latest reply on Nov 7, 2019 by Tomas Vaverka

Hi,

   When I using SBC FS4500, I try to verify whether the state machine swich of NORMAL MODE ->LPOFF-Auto WU->Wake-up is really worked. When in Normal mode, I sent spi by writing Mode register with LPOFF_AUTO_WU as 1 to SBC; then I watched the waveforms about the reset pin and vpre pin of SBC by oscilloscope, but it didn't happen such as from high level to low level. So I wonder to know if there are any ways to confirm the state machine switch is really worked.

 

Thanks a lot!

Xinguang

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