[Ryan Reschan]

Thanks, I’ll take a look!

[Ryan Reschan]

Neeraj, thanks for the reply.

 

I see the registers for MMC1 and MMC2 in the AM335x Technical Reference.

And I see how MMC1 was utilized in the OSD3358-BAS SBC ref design with the pinout.

What about MMC2 for the pinout?

I can’t seem to find information on where I could connect. Or would this be any GPMC AD pin?

 

[Ryan Reschan]

Neeraj,

I found the JEDEC standard document but I do not see anything on wear-leveling or endurance.

Do you have a datasheet of the eMMC used inside the C-SiP?

Thanks,

Ryan

[Ryan Reschan]

Thanks for the information Neeraj, I will look up that specification.

 

[Ryan Reschan]

Yes, I agree with your last sentence. I’m going to design the first PCB to allow us to wire up either option.

Thanks for the information,

Ryan

[Ryan Reschan]

VIN_USB having to be 4.3V or higher has me concerned if we go with the supercap on that line. At least a light load resistor on VIN_BAT takes care of that pin not holding any charge.

Would putting the supercap on VIN_BAT be a better option? Obviously the charging would need to be turned off since it’s not a Li-ion battery on that connection.

It would then be a similar setup to Solution Circuit Number 3 in the Brownout document except we would not have a supervisor or a load switch.

Thoughts on that setup?

Thanks,

Ryan

[Ryan Reschan]

Thank you for the replay Neeraj.

I have not come across the brownout article yet so I will have to give that a read.

It’s good to know that it should be possible.

-Ryan

[Author]

Posts