Processors

Processors forum

State
Locked Locked
Replies 4 replies
Subscribers 101 subscribers
Views 297 views
Users 0 members are here

Support feedback

Options

am335x Configuration pin sysboot2 can't pulldown to low level

xia wang

Prodigy 30 points

Hi,

My am335x configuration pin sysboot2 pulldown with 10K resistor,and not connect any other pin。During power on reset sample ,it always keep high.

If anyone has any idea on this view, please comment.

Thanks!

over 9 years ago

0 Biser Gatchev-XID over 9 years ago

TI__Guru**** 393215 points

Hi Xia,

You should check for shorts or wrong routing on your board. There can be no other reason for this to happen.

0 xia wang over 9 years ago in reply to Biser Gatchev-XID

Prodigy 30 points

Hi Biser,

Actually，when uboot running，i can operate sysboot2 pin as address line GPMC_A2，it works normal。It can output high level or low level that i want.So i don't think it shorts.

Best Regards

Xia

0 Biser Gatchev-XID over 9 years ago in reply to xia wang

TI__Guru**** 393215 points

I cannot say what's happening then. SYSBOOT pins don't have any internal pullup/pulldown resistors enabled at reset release time.

0 xia wang over 9 years ago in reply to Biser Gatchev-XID

Prodigy 30 points

Thanks Biser