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i.MX6 ODT Setting.

Question asked by Satoshi Shimoda on Jul 13, 2014
Latest reply on Jul 14, 2014 by igorpadykov

Hi community,


I have a question about i.MX6DQ ODT.

Please see IOMUXC_SW_PAD_CTL_GRP_TERM_CTLx register in IMX6DQRM Rev.1.

These registers have "ODT" fields to determine the ODT values.


On the other hand, please see MMDCx_MPODTCTRL register (chapter 44.12.38).

These have "ODTx_INT_RES" fields to determine the ODT values, also.


Then, which registers have a priority to setting ODT value?

According to the following comment in IMX6D ODT, I guess MMDCx_MPODTCTRL have a priority, is this correct?

"3.  It is recommended to use only MMDC_MPODTCTRL register to configure ODT of i.MX6."


Best Regards,

Satoshi Shimoda