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TPS65994AD: PROCHOT# and OC# function on TPS65994

Gary Teng

Genius 5840 points

Part Number: TPS65994AD
Other Parts Discussed in Thread: TUSB1146,

Hi Sir,

My customer is designing their tiger lake IPC product and using TPS65994AD. Generally PD function / TUSB1146 GPIO control is ok. But they have question about PROCHOT# and OC# signal.

About our PROCHOT# signal: I see there's description as below. So when the PROCHOT# will become to high? We alway see the signal is low until we set the signal event to no event with initial = 1. Is that correct? Or how do we setup the signal correctly? For those condition, we don't see there's relatived with processor's high temperature?

Aboout OC# signal, Do we have an event to match the function?

Thanks for your kindly help.

Regards,

Gary Teng

over 3 years ago

0 Kevin Kosta over 3 years ago

TI__Mastermind 18305 points

Hi Gary,

Thanks for reaching out on E2E!

I will get back to you tomorrow.

Thank you,

Kevin

0 Kevin Kosta over 3 years ago in reply to Kevin Kosta

TI__Mastermind 18305 points

Hi Gary,

Still looking into this!

I reached out to a team member to confirm an answer for you.

Thank you for you patience.

Best,

Kevin

0 Kevin Kosta over 3 years ago

TI__Mastermind 18305 points

Hi Gary,

Can you please send me your project configuration(.pjt)?

I appreciate it!

Thank you,

Kevin

0 Gary Teng over 3 years ago in reply to Kevin Kosta

Genius 5840 points

Hi Kevin,

FYI.

HID-2138_994AD_6p4p25_0815.pjt

0 Kevin Kosta over 3 years ago in reply to Gary Teng

TI__Mastermind 18305 points

Hi Gary,

Thank you for getting that file to me!

Please see the image below on how to enable PRCHOT#:

The signal is active low. When an even occurs the GPIO 9 signal should go low.

Regarding OC#, you have a couple of options. We recommend that a global event is used to detect an overcurrent event on either port:

There is also the possibility to set the event for each port individually.

I hope this helps!

Thank you,

Kevin

0 Gary Teng over 3 years ago in reply to Kevin Kosta

Genius 5840 points

Hi Kevin,

About the two questions,

1. PROCHOT#:

a. We use your setting above, but the GPIO will become to low after first plug in and never go back to high.

b. We set the gpio event to " output enable without event", but the pin will become low after several plug test.

2. OC#:

We set it to "fault condition active low global", but no OC# event happened although they short vbus to GND.

Is there any setting we have to check on our pjt?

Thanks for your kindly help.

Regards,

Gary

HID-2138_994AD_6p4p25_0906.pjt

0 Kevin Kosta over 3 years ago in reply to Gary Teng

TI__Mastermind 18305 points

Hi Gary,

I will get back to you soon!

Thank you,

Kevin

0 Kevin Kosta over 3 years ago in reply to Kevin Kosta

TI__Mastermind 18305 points

Hi Gary,

Apologies for the delay!

What FW and GUI version is the customer using?

Thank you,

Kevin