Hello,
in the terminal function list in the datasheets of the TMS470MF06607 and TMS470MF04207 devices (SPNS157B and SPNS159A) the polarity of the ENZ pin is not clearly defined. I guess that ENZ - low means Vreg enabled and ENZ - high means Vreg disabled.
Could you please confirm this and consider a clarification in the next update of those datasheets ?
Best regards
Andreas