Hello,
we need an (additonal) eMMC on our Verdin carrier board. As eMMC is like uSD we take that approach with some changes:
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We have fixed 1.8V I/O voltage whereas uSD switches between 3.3V and 1.8V.
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We do not want to switch eMMC power, instead we have a Reset pin. Verdin pin planner has an optional SD_1_RESET# pin (which seems to be a standard digital I/O).
My question is: Is there a eMMC driver available which halts the voltage at 1.8V and uses the Reset function instead of power cycling?
With such a driver we get a very smart HW solution.
Hello rosenheim,
so we are checking what to do the enable the reset.
The voltage side of this interface is always 1.8 volts. only the main SD card interface has the 3.3 ?1.8 voltage switching so you should be fine on the signal level side.
Best Regards,
Matthias
Hi @rosenheim !
Do you have news regarding this topic?
Best regards,
Hi Henrique,
we just have finished the layout so it will take about 8 weeks until we can test the eMMC on our custom board.
Michael
HI @rosenheim !
Do you have any updates regarding this topic?
Best regards,
Hi Henrique,
yes, it works fine!
Michael