TMS570LS3137: On the state of the pin after reset

Sh.Sasaki

Guru 13625 points

Part Number: TMS570LS3137

Hi all,

I would like to know about pin states after reset.

After resetting, the C13 pin of the device will be High for a moment as follows.

Is there any other pins that go high after a reset?

Best regards,
Sasaki

over 6 years ago

0 Miro over 6 years ago

TI__Mastermind 21425 points

Hello,
I am not observing same behavior on my desk. I am using TMS570LS3137 HDK.
What is your HW setup?

Best regards,
MIro

0 Sh.Sasaki over 6 years ago in reply to Miro

Guru 13625 points

Hi Miro-san,

Thank you for your support.

Miroslav Deyanov23 said:

I am not observing same behavior on my desk. I am using TMS570LS3137 HDK.
What is your HW setup?

I will check with my customer.

And I will also validate with HDK.

I will contact you when as soon as information is obtained.

Best regards,

Sasaki

0 Miro over 6 years ago in reply to Sh.Sasaki

TI__Mastermind 21425 points

Hello Sasaki-san,
Another test I've made after your previous post is placing external pull-up to C13. Then during PORRST C13 goes high and after PORRST goes low. This is because after PORRST internal pull-down is disconnected.

Best regards,
Miro

0 Sh.Sasaki over 6 years ago in reply to Miro

Guru 13625 points

Hi Miro-san,

I also confirmed the operation with HDK, I got the same result as you.
I will ask customers about the difference between HDK and my customer's board schematic.

Best regards,
Sasaki

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TMS570LS3137: On the state of the pin after reset