Why X15 board Power LED D3 turned off if not boot

Tony Tang

Mastermind 29172 points

When inserted boot SD card, push the power button then light LED D3 and board boot up.

When removed the SD card, push the power button also light D3, but D3 turned off after a while. why?

over 9 years ago

0 peaves over 9 years ago

TI__Guru 63145 points

Read the "Powering On EVM" section of the AM572x GP EVM HW user Guide located at the link provided below.

http://processors.wiki.ti.com/index.php/AM572x_General_Purpose_EVM_HW_User_Guide

Also read Advisory i863 in the AM572x Silicon Errata.

Regards,
Paul

0 Yordan Kovachev over 9 years ago

TI__Guru**** 161600 points

If there is no boot image that takes control over the PMIC, after a certain time it stops the power to the AM572x SoC.

If you want to overcome this, you should populate J5, or in the older revisions of AM572x GP EVM, you should swap R23 with R28 .

NOTE: As Paul suggested have a look at the Hardware user guide first.

Best Regards,
Yordan

0 Yordan Kovachev over 9 years ago in reply to Yordan Kovachev

TI__Guru**** 161600 points

Hi,

I've added a note in my previous post. You should consider the HW user guide & Errata before applying any hw changes to your board.

Best Regards,
Yordan

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Why X15 board Power LED D3 turned off if not boot