TUSB320LAI: pull-up resistor for ID pin

K.Yaita

Part Number: TUSB320LAI

Hi Team,

My customer is designing their system with TUSB320LAI for DRP application.
The datasheet shows ID pin should be pulled up to VDD using 200kΩ resistor as the following.

What is occured if 100kΩ or 1MΩ resistor is used for pull-up?
The background of the question is OTG USB controller has internal pull-up resistor that can be selected 100kΩ or 1MΩ.

Best Regards,
Yaita

over 7 years ago

0 Gerasimos Madalvanos over 7 years ago

TI__Mastermind 33723 points

Hello Yaita,

You can use either the 100kΩ or 1MΩ resistor in this scenario, with the difference seen between the two being the Low voltage at the pin. Both should work, but 1MΩ is preferred.

Best,
Gerasimos

0 K.Yaita over 7 years ago in reply to Gerasimos Madalvanos

Guru 29720 points

Hi Gerasimos-san,

Thank you for your kind support.
I understand.

Best Regards,
Yaita

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TUSB320LAI: pull-up resistor for ID pin