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About Variable delay function of SD specification in i.MX6 series.

Question asked by Keita Nagashima on Feb 17, 2015
Latest reply on Feb 17, 2015 by igorpadykov

Dear Sir or Madam,

 

Hello.

I have got the below answer about Variable delay function of SD specification in i.MX6 series.

About Variable_Output_Data_Window of SD specification in i.MX6 series.

"CMD19 is supported for both SDR-104 and SDR-50."

 

But, refer to Table 67-6. Commands for MMC/SD/SDIO Cards (P.5618) in IMX6DQRM(Rev.2).

"CMD19 is Reserved"

 

And then, refer to uSDHCx_INT_STATUS field descriptions(P.5654).

"Tuning Pass:(only for SD3.0 SDR104 mode)

Current CMD19 transfer is done successfully. That is, current sampling point is correct."

 

Is the tuning function supporting for both SDR-104 and SDR-50?

 

Best Regards,

Keita

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