Can the P2.04 of nRF54L15 use for the CS of SPI0?

[Tom.Fu]

Hi Support Team 

Can the P2.04 of nRF54L15 use for the CS of SPI0? We found that there is no description of SPM CS for P2.04.

[Håkon Alseth]

Hi,

 

The pins for SPIM00 is dedicated:

https://docs.nordicsemi.com/bundle/ps_nrf54L15/page/spim.html#d1398e937

 

SPIM00 has a hard requirement on all SPIM.PSEL.* functions.

  

Technically you can use /CSN as a generic GPIO and omit writing to the SPIM.PSEL.CSN register for SPIM00, but your problem will arise as there's another signal that can only be used on P2.04, which is the SPIM00 SDI.

  

Kind regards,

Håkon

[Tom.Fu]

Hi 

So the CS of SPIM0 can only be used on P2.05? Many thanks.

[Håkon Alseth]

Hi,

 

Tom.Fu said:

So the CS of SPIM0 can only be used on P2.05? Many thanks.

If you use the PSEL.CSN function, yes.

 

Kind regards,

Håkon