Hi fanziyu,
Currently i just found a chapter of LIN stack inside the User manual document of the K144 derivative, for SDK 3.0.0


Please help me take a look.
About the line in AN5122 i'm not so sure due to it's a old document and i'm not familiar with Magniv family.
One possible reference is User manual document of LIN stack package released recently. So is this possible for you to use the new version of LIN stack?

Thank you,
Nam.