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What if PCS is not used for LPSPI? 

Question asked by 文明 徐 on Apr 9, 2020
Latest reply on Apr 12, 2020 by Daniel Martynek



On the SPI bus, there are only one master and one salve, chip select of slave device is tied to ground, that means slave device is always active, in this case, chip select of master is not necessary any more and we did not assign pin for it. 


We also use some constant-current LED driver (like TLC5928 of TI) which does not have chip select pin by design. 


The problem is PCS is mandatory to LPSPI module in S32DS.


Please kindly give your recommendation. 


Matthew Xu