AM3352 + eMMC maximum size

sweta bhatt

Expert 2345 points

Other Parts Discussed in Thread: AM3352

Hi all,

We are planning to use AM3352 with eMMC as boot as well as storage media.

I can see from Wiki pages that common used size is 2 GB.

Can anyone confirm the maximum possible size of eMMC for AM3352 ?

Thanks in advance !

Regards,

Sweta

over 12 years ago

0 Biser Gatchev-XID over 12 years ago

TI__Guru**** 393215 points

Hi Sweta,

No real restriction on eMMC size, it's the same as SD card. Just keep in mind that eMMC's larger that 4GB must boot from MMC1 (see AM335X TRM, Rev.I, section 26.1.7.5.2).

0 Walter David over 12 years ago in reply to Biser Gatchev-XID

Prodigy 20 points

Just wanted to say this was helpful in reminding me that MMC1 needs to be used if the MMC is larger than 4GB, Thanks.

0 Rogerio Almeida over 12 years ago in reply to Walter David

TI__Mastermind 26225 points

If they are eMMC v4.41 spec compliant then they could be used without any issues.

0 Stephan Hilchenbach over 10 years ago in reply to Rogerio Almeida

Intellectual 495 points

Hello Rogerio,

according to the TRM the MMC0 cannot boot devices greater than 4GByte. Does the boot ROM code set the Bit 30 in the CMD1 when the device is High Capacity? (Reading the eMMC OCR register content like 0xC0FF8080). If not, I can't use Micron eMMC devices because they expect it. But Kingston devices boot without sending this Bit as command argument ("host is capable of handling sector type of addressing"). Currently I have a 8GByte Micron eMMC connected to MMC0 which does not boot.

Thanks in advance,
Stephan

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AM3352 + eMMC maximum size