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

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abdishere

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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%
 

How about some context?

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

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

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