HD3SS3220: Dynamic swithching between DFP and UFP

Takahiro Saito

Expert 5455 points

Part Number: HD3SS3220

Hi team,

Is there any problem to swtich DFP and UFP by controling PORT pin to HIGH or LOW in operation?

It can be done by floating the PORT pin to act the device as DRP mode, but customer is considering not to use DRP mode.

Regards,

Saito

over 6 years ago

0 Brian Zhou over 6 years ago

TI__Guru*** 144845 points

you can enable DFP and UFP with I2C and pull PORT pin low. see table 10 mode_sel on datasheet

0 Takahiro Saito over 6 years ago in reply to Brian Zhou

TI__Expert 5455 points

Hi Brian,

I want to ask you whether DFP and UFP can swap anytime by controling PORT pin in operation .
Is the switching between DFP and UFP mode limited only in unattached mode same as MODE_SELECT register?

Regards,
Saito

0 Brian Zhou over 6 years ago in reply to Takahiro Saito

TI__Guru*** 144845 points

yes, only in unattached mode

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HD3SS3220: Dynamic swithching between DFP and UFP