AM625: Unused GPIO Registers

Mari Tsunoda

Expert 5726 points

Part Number: AM625

Tool/software:

Hi Team,

Can you tell me what my customer should configure the register settings for unused GPIO settings?

Best regards,

Mari Tsunoda

over 2 years ago

0 Vaibhav Kumar over 2 years ago

TI__Guru 59215 points

Hello Mari,

The assigned expert is out of office today. Please expect delayed responses.

Thanks,

Vaibhav

0 Mari Tsunoda over 2 years ago in reply to Vaibhav Kumar

TI__Expert 5726 points

Hi Vaibhav,

Thanks for the response. Please keep me updated.

Best,

Mari

0 Tushar Thakur over 2 years ago in reply to Mari Tsunoda

TI__Guru 65048 points

Hi Mari,

Can you please tell us why you want to configure the register for GPIO pins which are not used?

If you are not using a specific GPIO pin in application, there is no need to configure it.

Regards,

Tushar

0 Mari Tsunoda over 2 years ago in reply to Tushar Thakur

TI__Expert 5726 points

Hi Tushar,

My customer is worried about noise and malfunctioning so they thought maybe it would be better to configure the registers.

So it better to:

1. Leave the pin as default and boot OR

2. Leave RX/TX/PULL as OFF/OFF/OFF?

Which is better?

If it is 2, is there anything they should be aware of?

Best regards,

Mari Tsunoda

0 Mari Tsunoda over 2 years ago in reply to Mari Tsunoda

TI__Expert 5726 points

Hi,

Any update on this?

-Mari

0 Swargam Anil over 2 years ago in reply to Mari Tsunoda

TI__Guru 55388 points

Hi Mari,

If user really worrying about unused pins creates an issue.

Users can simply configure either pins as Input or output and set the right TX and RX buffers according to pin input or output configuration .

I have seen other customers configured unused pins as output and driving low signal and enabled RX buffers and not enabled any pull up's/pull down.

Regards,

Anil.

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AM625: Unused GPIO Registers