topic Question About SPI Module "DSPI" MCR register Configuration. in Kinetis Microcontrollers

Question About SPI Module "DSPI" MCR register Configuration.

islamwahdan — Wed, 04 Feb 2015 13:01:47 GMT

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....]?]

Re: Question About SPI Module "DSPI" MCR register Configuration.

pietrodicastri — Fri, 27 Feb 2015 15:03:27 GMT

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

Re: Question About SPI Module "DSPI" MCR register Configuration.

islamwahdan — Mon, 02 Mar 2015 18:52:55 GMT

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

Re: Question About SPI Module "DSPI" MCR register Configuration.

jeremyzhou — Tue, 03 Mar 2015 02:52:31 GMT

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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