kw36z doesn't make the crystal oscillator work

[924905137]

Hi,

I'm trying to build a kw36z circuit board myself. The problem I have is that I can normally download the SDK program to kw36z, but it will always be in a dead loop waiting for RF_OSC_READY when running BOARD_RFOscInit() and the 36Mhz crystal oscillator is not working. May I ask what the possible reasons are?

[estephania_mart]

Hello, 

You need a 32 MHz reference oscillator for RF operation. 

Could you please verify if you design it's compliant with the minimum BOM needed for the KW36? You can find more details of what the IC requires to work correctly. 

You can also check the Hardware design Considerations as well to make sure your board it's compliant with all those requirements. 

Regards, 

Estephania 

https://www.nxp.com/docs/en/user-guide/MiniBoMKW36UG.pdf