Feeding 32.768KHz crystal clock to another IC (MAX30003)

[OswaldoP]

Hello, 

I'm trying to interface nRF52832 with an AFE IC which has to dialogue with nRF via SPI. Since this IC requires an external clock source, and Here is said that this is possible (or at least I think).

1.can it be done just using the nRF and connecting one end to the External clock input of the IC?

2. if it's not recommended to do so, is it a problem to just use two different crystals for the two components? could this cause some desync problems in SPI transmission? 

thank you, Have a nice day. 

[Jared]

Hi,

Seen from the nRF52 side, this is OK. 

1.can it be done just using the nRF and connecting one end to the External clock input of the IC?

Yes, as shown in the white paper you linked. 

Jared 

[OswaldoP]

I confirm it can be done just following the documentation, thank you.