TPS65982 / Internal Pull Up Enable

K.Yaita

Other Parts Discussed in Thread: TPS65982

Hi Team,

I tried to check "Internal Pull Up Enable" for GPIO#3 then SPI Flash programming, however GPIO#3 is still low level in default.

Could you tell me how to use the feature of "Internal Pull Up Enable / Internal Pull Down Enable"?

Best Regareds,
Yaita / Japan disty

over 9 years ago

0 Brad Hale over 9 years ago

TI__Intellectual 1010 points

TPS65982 has the ability to apply a pull-up or pull-down to GPIO pins using internal hardware. You may use the check box you highlighted to enable either the pull-up or the pull-down of the GPIO when needed. See section 8.3.18.1 of the TPS65982 data manual for more information.

0 K.Yaita over 9 years ago in reply to Brad Hale

Guru 29720 points

Hi Brad-san,

I checked "Internal Pull Up Enable" to enable pull-up for GPIO#3 however high level isn't observed at GPIO#3 pin.
Could you confirm this issue?

Best Regards,
Yaita

0 Brad Hale over 9 years ago in reply to K.Yaita

TI__Intellectual 1010 points

Which GPIO event are you mapping to GPIO 3? The pull up/down only affects the events that act as an open drain GPIO. Many of the events are defined to be push/pull. Those events will always drive the GPIO signal high or low (depending on the event state) and override the pull up/down.

0 K.Yaita over 9 years ago in reply to Brad Hale

Guru 29720 points

Hi Brad-san,

Thank you for your reply!
I assigned "Either DP or USB Event" for GPIO3 at this time.
I understood the pull up/down is overrided in the event.

Best Regards,
Yaita

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TPS65982 / Internal Pull Up Enable