i did a lot of research, and i didn't find anything about the velocity/baudrate of the data transmission from the BeagleBone Black to the uSDcard, i have the microsdcard configured as extra storage(FAT32).
I saw in the hardware schematic of the BBB, data the pins that connect to the uSD card are the SPI, so i think its a very fast communication, but i want to know how much.
If anyone knows or have done some tests, please tell me.
Best regards, David C.
48MHz is the max RAW frequency of the interface