15 Replies Latest reply on Mar 23, 2017 5:27 AM by Carlos_A

    braswell sdmmc only D[0] is used for data transfer.

    keziaha Green Belt

      Hello,

       

      i would like activate D[0-4] on sd port, i don't find, how to activate D1,D2,D3 ?

       

      In datasheet volume 1:

      Table 10-3. SD Signals:

      SD Card Data bits 0 to 3

      Bidirectional port used to transfer data to and from SD/MMC card.

      By default, after power up or reset, only D[0] is used for data transfer. A wider data

      bus can be configured for data transfer, using D[3:0].

      Note: Unused data lines will be tri-stated by the SoC logic.