Emmc-sd card slot - Rock 3A

ROCK 3 Series 3A
1

Product in testing : Rock 3A
Product to replace : Raspberry Pi 3B and Odroid 4C

  • Product correctly booted with MicroSd card (Debian)
  • we cannot boot 3A when we use the “emmc + sd socket” that is being sold by HardKernel (Odroid). we only see LED light on
  • we use this emmc… is it impossible to connect emmc to the sd card slot of rock board?
  • for Raspberry Pi and Odroid, we installed emmc in the sd slot
  • if cannot, please advise if we have to use the emmc connector from Radxa or OKDO only.
2

You can just install the eMMC module to the ROCK 3A. There are two eMMC connectors on the ROCK 3A but there is a single eMMC connector on the odroid eMMC module. You can just connect this single eMMC connector on the ROCK 3A, it will just work.

3

@radxa

• Still the software is being developed, so for new CPU (Rock), we are just checking standard OS installation and some parts related to booting
• We are not using the eMMC modules of hard kernel. We are going to use eMMC module that we have made for ourselves.
• In previous application, we made our own eMMC and turn it into a form of SD card and used it.
• In Rock, we found that eMMC does not run in a format of SD card, so I think we have change to eMMC connector type totest.

Request : Can we get the circuit diagram for the “eMMC connector area” of ROCK 3A and 3C?

4

Please check page 17 of ROCK 3C schematic.

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