Hi @Anush_Balraj,
I hope you are doing great! For connection issues, please help me checking this community post, as all hardware design recommendations are located there (There is also a document at the end of the post: Trimming adjust of 32MHz XTAL external oscillator).
As for specifics, in the MK38's Data Sheet, chapter 6.5.3.2 (Reference Oscillator Specification), are some recommendations for external crystal oscillators, as well design specifications for optimal RF performance, please help me checking this chapter.
There's also a Crystal Oscillator Troubleshooting guide for quick-solving crystal oscillator problems that may arise.
I hope you find this helpful!
Best regards, Julián.
