Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Freescale Semiconductor/MK21D5WS/RCM/MR#0x0
EZP_MS=0
Mode Register
no description available
EZP_MS_B pin state
0 (0): Pin deasserted (logic 1)
1 (1): Pin asserted (logic 0)
https://github.com/cmsis-svd/cmsis-svd-data