NVCC_RGMII 3.3V mode in i.MX6SX

[ko-hey]

Hi all

I want to know the RGMII can use in 3.3V mode in i.MX6SoloX.

Could you tell me i.MX6SoloX can use 3.3V for RGMII ?

I checked "Absolute Maximum Ratings" and "Operating ranges" in following datasheet.

http://www.nxp.com/assets/documents/data/en/data-sheets/IMX6SXAEC.pdf 

The absolute max ratings of NVCC_RGMII is as below.

On the other hand, the operating ranges of NVCC_RGMII is as below.

Furthermore, I checked the schematic of MCIMX6SX-SDB (MX6SoloX SABRESDB_DESIGNFILES/Schematics/SPF-27962.pdf.pdf).

In device tree of SPF-27962.pdf.pdf, it seems like the NVCC_RGMII is inputted 3.3V.

As a result, I think the description of Absolute Maximum Ratings for NVCC_RGMII in datasheet is typo.

Am I correct ?

If my understanding is correct, please tell the correct value. 

Ko-hey

[gusarambula · Accepted solution]

Hello Ko-hey,

My apologies for the delay. I confirmed that the correct max rating for NCVV_RGMIIx is 3.6v, which would make it compatible with RGMII 3.3v and is indeed implemented on the i.MX6SX SABRE board.

Thanks for pointing this error out and my apologies for the inconvenience. This should be fixed on the next release of the documentation.

Regards,