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UCD90320: setting and reading a bit in memory

Part Number: UCD90320

Hi,

I wanted to know is there any provision to set a particular bit in the RAM.

Current scnario:

I'm getting an external signal to UCD90320 landing on a GPIO which indicates the power down sequence to start.

Once the power down completes I want the external software to know about it. But I dont want to drive Pins for that (like any GPOs or LGPOs) i.e I dont want to convey this via analog output.

After the power down I want to set any bit (indicates power down sequence is completed), which external software can access via PMBus commands  and I2C link.

If its possible whats the PMBus command/s for the same

Thanks and regards,

Ashwath.