AM3352 and TPS65910A connection

M.H

Genius 5960 points

Other Parts Discussed in Thread: TPS65910A, AM3352

Hi,

I am using the AM3352 and TPS65910A.

AM3352 and TPS65910A connection

I am using the AM3352 and TPS65910A.

If you enter the + 5V to VCC7 of TPS65910A,
"VRTC output of TPS65910A" Is it possible to drive the VDDS_VRTC pin of AM3352?

Best Regards,

hamada

over 10 years ago

0 Biser Gatchev-XID over 10 years ago

TI__Guru**** 393215 points

Hi,

For proper connections please check this guide: http://www.ti.com/lit/ug/swcu093c/swcu093c.pdf

0 M.H over 10 years ago in reply to Biser Gatchev-XID

Genius 5960 points

Hi,

Thank you for reply.

Although it is here material,
Is it valid even if you disable the RTC function of AM3352 .

Best Regards,

hamada

0 Biser Gatchev-XID over 10 years ago in reply to M.H

TI__Guru**** 393215 points

Yes, disabling the RTC does not mean that VDDS_RTC may not be supplied. However in this case it can be provided from any 1.8V supply. See this table: http://processors.wiki.ti.com/index.php/AM335x_Schematic_Checklist#RTC

0 M.H over 10 years ago in reply to Biser Gatchev-XID

Genius 5960 points

Hi,

Thank you for reply.

>However in this case it can be provided from any 1.8V supply

It is that it is no problem to supply 1.8V by connecting the "TPS65910A of VRTC" and "AM3352 of VDDS_RTC".

Best Regards,

hamada

0 Biser Gatchev-XID over 10 years ago in reply to M.H

TI__Guru**** 393215 points

Please check several things:

1. Which exactly TPS65910A are you using? Note Table 1 in the PDF guide I gave you above.

2. Is AM335X RTC totally disabled or only RTC-only mode is not used? The wiki link gives the necessary connections for these cases.

0 M.H over 10 years ago in reply to Biser Gatchev-XID

Genius 5960 points

Thank you for reply.

1.
Yes. I am use TPS65910A.

2.
I use a disable RTC of AM3352.(RTC feature disabled )

Best Regards,

hamada

0 Biser Gatchev-XID over 10 years ago in reply to M.H

TI__Guru**** 393215 points

In this case simply connect VDDS_RTC to one of the other 1.8V power supplies as explained in the wiki table. There is no need to use the VRTC supply.

0 M.H over 10 years ago in reply to Biser Gatchev-XID

Genius 5960 points

If you use the VRTC power, Do you have any problems?

0 Biser Gatchev-XID over 10 years ago in reply to M.H

TI__Guru**** 393215 points

I cannot say. You can ask for more details on the dedicated TPS659X forum: http://e2e.ti.com/support/power_management/pmu/f/43

0 M.H over 10 years ago in reply to Biser Gatchev-XID

Genius 5960 points

Thank you for reply.

I'll make sure to TPS659x forum.

Best Regards,

hamada

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AM3352 and TPS65910A connection