PWR_RDY bit is always high, on MAXM86161

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Hi, Thank you for your reply.

I'll visit the technical support.

H Meazawa,

I am having similar difficulty, and I am not getting support from Analog.

Can you share what you've learned about the PWR_RDY bit and how to control the INTB singal pin? 

Hi, Biomurph. I'm sorry for the difficulty you're having getting support. Have you contacted technical support but have not received any? Do you have a service ticket number you can give me? I will follow up with support. Thank you.

Hi Geneva,

I did actually get a reply today after a month or so.

I was expecting the DATA_READY interrupt to trigger the INTB pin, but after tinkering, it looks like only the A_FULL interrupt will trigger it. Still not sure about the PWR_RDY bit, but I do seem to be getting data off of it now.

Thank you for the update. 

Hi,

I referred the MAXM86161 datasheet '19-100523; Rev 1; 4/23'.

The pseudo-code in the datasheet tells us the sequence to initialize the optical AFE. Soft Reset, Shutdown and Clear Interrupt. But it didn't work well.

I tried to change sequence: Soft Reset, Clear Interrupt and Shutdown (put into a power-save mode). Then it works well.

INTB signal can be controlled by the Interrupt Enable registers.

Hi,

I referred the MAXM86161 datasheet '19-100523; Rev 1; 4/23'.

The pseudo-code in the datasheet tells us the sequence to initialize the optical AFE. Soft Reset, Shutdown and Clear Interrupt. But it didn't work well.

I tried to change sequence: Soft Reset, Clear Interrupt and Shutdown (put into a power-save mode). Then it works well.

INTB signal can be controlled by the Interrupt Enable registers.