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Question, i.MX6SoloLite SD Card Interface

Question asked by AVNET JAPAN FAE (team share account) on Oct 16, 2016
Latest reply on Oct 16, 2016 by Yuri Muhin

Dear team,


I would like to ask about SPEED and SRE bit field setting of i.MX6SoloLite IOMUXC_SW_PAD_CTL_PAD_xxx register.

My customer is facing the issue that they sometimes saw CRC error on SD Card data transfer between i.MX6SoloLite. And they think SPPED and SRE setting of IOMUXC_SW_PAD_CTL_PAD_xxx registers might affect it.


What values should be set to SPEED bit field of IOMUXC_SW_PAD_CTL_PAD_xxx registers?

The customer is using SD Card interface of i.MX6SL as SDR-50.


What values should be set into SRE field of IOMUXC_SW_PAD_CTL_PAD_xxx registers for related pads? And could you show me what is changed actually by the setting of SRE bit?