AWR2944: WARM_RESET pin

Huan YANG

Prodigy 250 points

Part Number: AWR2944

Hello TI experts,

During normal operation, could a low signal on B12 WARM_RESET pin lead to AWR2944 reset?

Or the behavior depends on SW configuration?

Thanks a lot.

over 1 year ago

0 Josh Wyatt over 1 year ago

TI__Guru* 91206 points

Dear Huan -

Thanks for the post and welcome to E2E!

The WARM_RESET pin can be driven low from PMIC for diagnostic or can be used as status signal (from the device) that the AWR2944 is going through a reset.

There is also a description of this on page 3112 of the TRM

https://www.ti.com/lit/ug/spruiv5c/spruiv5c.pdf

0 Huan YANG over 1 year ago in reply to Josh Wyatt

Prodigy 250 points

Hello Josh Wyatt,

I found the description.

It's clear about "can be used as status signal (from the device) that the AWR2944 is going through a reset". This is used as output function for status indication.

I don't understand "The WARM_RESET pin can be driven low from PMIC for diagnostic". Could you explain more? Is this used as input function?

Thanks a lot.

0 Josh Wyatt over 1 year ago in reply to Huan YANG

TI__Guru* 91206 points

Dear Huan -

Please do take a moment to read page 3112 text from link i sent above in the TRM.

This is I/O pin, correct, and can be used as output and input, and should be configured as described based on usage.

Sensors

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AWR2944: WARM_RESET pin