TPS65988: GPIO0/1/2/12 status when disabled

Antony Lin

Part Number: TPS65988

Hi,

When GPIO0/1/2/12 is configured as disabled in FW config tool, what is the status of these pins after boot up? Is it high-impedance?

THanks!

Antony

over 6 years ago

0 Eric Beljaars over 6 years ago

TI__Mastermind 36756 points

Hi Antony,

GPIO0 is asserted low during the TPS65988 boot process. Once device configuration and patches are loaded GPIO0 is released.

GPIO1 should be grounded with a 1Mohm resistor if unused. GPIO 2 and 12 may be left floating when unused and will be High-Z.

If this answers your question, PLEASE select This resolved my issue

Thank you,
Eric

0 Antony Lin over 6 years ago in reply to Eric Beljaars

TI__Genius 13480 points

Hi Eric,

Do you mean GPIO0 will still be low during boot even though I configure it as DISABLED?
And, do you mean GPIO1 is not in high-Z as GPIO2/12 if I configure GPIO1 as disabled?

Thanks!

Antony

0 Eric Beljaars over 6 years ago in reply to Antony Lin

TI__Mastermind 36756 points

Hi Antony,

GPIO0 will still be low during boot even if it is configured as Disabled.
I just checked with the team, GPIO1 can also be left floating if set to disabled. It will indeed also be high-z in that state.

Thanks,
Eric

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TPS65988: GPIO0/1/2/12 status when disabled