Hello @pchavapr4,
I just tested it on the S32K1xx series which I happen to have on bench, my test project can be found here:
https://community.nxp.com/t5/S32K-Knowledge-Base/S32K144-LIN-Go-to-Sleep/ta-p/2136890
It is the same on the S32K310.
You can check these functions:
Lpuart_Lin_Ip_IRQHandlerWhenInitializedExceptBreakIRQ()
Lpuart_Lin_Ip_ProcessWakeupDetect()
Lpuart_Lin_Ip_CheckWakeupSignal().
BR, Daniel