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PROCESSOR-SDK-AM64X: Sitara boot from eMMC memory

Part Number: PROCESSOR-SDK-AM64X

I'm looking for some clarification on this

Where eMMC is configured as the backup boot source its unclear with what speed the eMMC will be read from

  1. From Table 4-18 in the SPRUIM2H

from Table 4-18

This suggests 8 bit mode, however

  1. In the next chapter (4.4.4.1) one reads


    which suggests 1-bit mode

 so which is it?