Is it possible to not provide UNCORE_VNN to an Atom E3826 processor?

[LDefa]

Hello,

We are currently designing an embedded CPU board with an Intel Atom E3826.

Is it possible to power down the UNCORE_VNN power rail to decrease to power consumption?

Regards,

Louis Defauw

[CarlosAM_INTEL]

Hello, @LDefa​:

Thank you for contacting Intel Embedded Community.

Could you please give a detail description of the situation stated in this forum?

We are waiting for your answer.

Best regards,

@Mæcenas_INTEL​.

[LDefa]

Hello,

We work on an embedded board with an Intel Atom E3826 where no graphics functions are used.

On of the objective is to decrease the power consumption of the board.

As the graphic part of the CPU is not in use, is it possible to shut down the UNCOREE_VNN power rail?

Best regards,

Louis

[CarlosAM_INTEL]

Hello, @LDefa​:

Thanks for your update.

Reviewing the Intel(R) Atom(TM) Processor E3800 Product Family Platform Design Guide (PDG) document # 512379 there is no information to disable the cited power rail. You can confirm this information in sections 4.3.1, 4.3.2, 4.4.1, 4.4.3.3, and 4.4.4; on pages 55, 56, 57, 60, and 74. This document can be found when you are logged into your Resource & Design Center (RDC) privileged account at the following website:

http://www.intel.com/cd/edesign/library/asmo-na/eng/572379.htm

The RDC Account Support form is the channel to process your account update request. It can be found at:

https://www.intel.com/content/www/us/en/forms/design/contact-support.html

Best regards,

@Mæcenas_INTEL​.