i wants to use the cmsis for the ethernet interface with the k66 . and what are steps i needs to follow
Hello Mahesh,
go to https://kex.nxp.com and build an SDK for your selected device. It includes support for CMSIS and you can use it with any popular toolchain. There's a video available at http://www2.keil.com/nxp that shows how to use it with MDK for example.
Kind regards,
Christopher