i.MX6 ODT Setting.

satoshishimoda — Mon, 14 Jul 2014 05:44:40 GMT

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

Re: i.MX6 ODT Setting.

igorpadykov — Mon, 14 Jul 2014 23:20:37 GMT

Hi Satoshi,

these registers are working independently from each other (no priority).

And yes:

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

Best regards

chip

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