What is the difference between Core, Analog and I/O power supply?

[abdishere]

What does these mean?
Power supply:
core: 1.2V +/-5%
analog: 3.3V+/-10%USB, 2.5V+/-10%(MIPI), 2.8V+10%
I/O: 3.3V+/-10%

 

[barry]

How about some context?

Core is the voltage for the nuclear reactor core. Or maybe the FPGA core. Or perhaps the microprocessor core.

 

[treez]

In top post, that sounds like the power rails needed for the specific features inside a microcontroller,
The I/O has a 3v3 rail
The analog stuff (eg ADC comparaotr etc) has A 2V5 RAIL
The core is the processor , where the lower voltage makes it run less hot whilst processing at a high clock rate.

 

[abdishere]

These voltage values were seen in the product specification of OmniVision's OV788 multi media processor.