• it is not always necessary to connect the cbusy b terminal to the master side. if you do not connect the cbusyb pin to the master side, follow the cbusyb "l" level output time described in the ac characteristics.
      for playback command reception, the rdstat command can be used to read the internal busy b status.
      we recommend that you check busy b with the rdstat command and periodically check whether the command has been accepted.
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