nrf52832 FCLK pin

[Hk]

Hi,

My sensor uses SPI communication and need 32.768kHz external clock pin FCLK , I connect 32.768kHz clock to XL1 and XL2 but my problem is which pin can I use it for FCLK ?

[RK]

What kind of SPI needs a frame clock? The SPI supported on the nRF series is normal SPI, just clock and data.

[bjorn-spockeli]

Could you provide a link to the datasheet of the sensor you're using?

[Hk]

datasheets.maximintegrated.com/.../MAX30003.pdf

[RK]

I'm not convinced reading that data sheet that FCLK has to be synchronous in which case you could generate it separately and pipe it in.

[Hk]

How can I do it?