IMXRT 1064 eMMC interface

[vasudhevan]

HI,

   We going to interface 8 bit data line emmc(SDINBDG4-8G) to  uSDHC1 4 bit data line for our application data storage purpose.

   SDINBDG4-8G eMMC 5.1 specification but 1064 supports v4.5/4.2/4.3/4.4/4.41/ this interface will work (or) we need to choose another emmc part number ?

Thanks & Regards

       Vasu

[morphee909]

I plan to interface the same EMMC to an RT1064. The EMMC is 5.1 HS400 but the RT1064 is max HS200. So it needs to change clock frequency ? If it is the case does someone knows how to do that ?

[fangfang · Accepted solution]

Hello

 The EMMC 4.5 or EMMC 5.0 /5.1 is backward-compatible with eMMC4.4, we can use it in eMMC4.4 mode to enable eMMC4.4 functionality and performance on the i.MXRT platform. Booting from an eMMC 4.5 device or higher version is not supported,  boot ROM will fall back to the eMMC4.4
standard when a eMMC4.5 or higher version capable device is detected. That's to say. One  can use eMMC 5.x card. But it will work in eMMC 4.4 mode. Have a nice day.

Best Regards

[vasudhevan]

Hi fangfang,

    Thank you for your response.

     We going to use only data storage purpose.

Thanks & Regards 

       Vasu