CPLD as a power supply control??!!

Madhu_HI am a final sem, Instrumentation technology student from BMSCE, Bangalore.
I have been offered internship in an automotive company for building a telematics control unit.I came across a cpld block in the hardware diagram for catering to various power supply requirements to the peripherals.Can anyone please explain how this is realized?

hi sis,
i would like to help you if you can explain more about ur project, i.e, you design prospect.