Question About SPI Module "DSPI" MCR register Configuration.

[islamwahdan]

For the SPI module  DSPI_x the MCR register contains bit fields [PCSIS0....PCSISn] ...i am operating the MCU in slave mode is PCSIS0 now my chip select (CS0).......[i.e PCSIS1 = CS1 , PCSIS2 = CS2 and so on....]?]

[pietrodicastri]

Hello

I am now wondering the same thing. Did You figure out??

I wander what is the sense of having more than one SS for one slave instance..

Thank You

Pietro

[islamwahdan]

Hello Pietro

I think yes PCSIS0 (CS0) is the only active chip select in slave mode , the other CS i think are for Master Mode only, i didn't get any confirmation from anyone though.

thanks

[jeremyzhou · Accepted solution]

Hi Islam,

You're 100% correct. Only the PCS0/SS pin support the slave operation and other PCS pins become invalid when work in slave mode.
Have a great day,
Ping

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