AM6442: AM64x SD boot from MMC1 if SDCD pin is not connected

Rich Chen

Part Number: AM6442

Dear Sir,

Customer target board use MMC1 to boot SD card without connecting SDCD pin (SDCD is floating).

SD clock cannot be measured during booting.

Is SDCD pin a must pin to be checked by ROM CODE during SD/MMC boot on AM64x?

BR, Rich

0 PaulM over 5 years ago

Rich

We are checking on this and will get back to you shortly

--Paul

+1 PaulM over 5 years ago in reply to PaulM

I found the following in the TRM (rev B).....

So a valid SDCD is required for boot.

0 Rich Chen over 5 years ago in reply to PaulM

Paul,

Thanks, it is not listed in TRM (rev A).

It is nice to know the condition is described.

BR, Rich

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