AM2434: AM243 CTRLMMR_MAC_ID register at reset

Yanyves Genereux

Part Number: AM2434

Tool/software:

Hello,

I have a question about the register CTRLMMR_MAC_ID, in the user manual of the chip it says "Reset = X", what does mean X ? Does that mean that after a reset this register takes a random value ?

Thank you

Regards

10 months ago

0 Kallikuppa Sreenivasa 10 months ago

TI__Guru**** 188379 points

Hello Yanyves Genereux

Thank you.

I suspect X indicates the value is invalid during reset.

Is this a general query or are you seeing some issue?

Regards,

Sreenivasa

0 Yanyves Genereux 10 months ago in reply to Kallikuppa Sreenivasa

Prodigy 30 points

Hello
Thank you for the answer.

It is a general query to make sure I don't have problem down the line.

Is this value reliable ? If at reset the value is invalid, which component is responsible to fill it after reset ?

Regards

Yanyves

0 Kallikuppa Sreenivasa 10 months ago in reply to Yanyves Genereux

TI__Guru**** 188379 points

Hello Yanyves Genereux

Thank you.

I understand these IDs are latched into the CTRLMMR_MAC_ID register during power-up.

Regards,

Sreenivasa

0 Yanyves Genereux 10 months ago in reply to Kallikuppa Sreenivasa

Prodigy 30 points

Hello
Ok, so that means after the PBL runs this register has a reliable value that we can use ?

Thanks

Yanyves

+1 Kallikuppa Sreenivasa 10 months ago in reply to Yanyves Genereux

TI__Guru**** 188379 points

Hello Yanyves Genereux

Thank you and agree.

Any time you access the register the programmed MacID is readable.

I just realized Xh may be indicating the value marked above after reset.

This is from the AM62x TRM.

Regards,

Sreenivasa'

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AM2434: AM243 CTRLMMR_MAC_ID register at reset