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LM2755 VIO pin question

daniel
Genius 5095 points
Other Parts Discussed in Thread: LM2755

Hi,

The typical application circuit of datasheet, a pull-up resistor between VIO and SDIO.

But LM2755 evaluation board schematic, there is no pull-up resistor.

Could you please tell me what is the purpose of this resistor?

If Ialready add a pull-up resistor on I2C, do I still need a pull-up resistor between VIO and SDIO?

And why the pull-up resistor to VIO only on SDIO pin, but SCL does not have?

Thanks