4 Replies Latest reply on Jun 17, 2012 1:45 PM by anand.srinivasan.asokan

    why connect 68013's data bus to an external FIFO  68013 can't renumeration

    fucai.yan

      Hi,everyone,

         

      I use the 68013's GPIF to read data from an external FIFO. It's strange that when I connect the 68013's data bus to external's output databus,68013 can't renumeration, I disconnect them it can renumeration.

         


      At the beginning I thought the problem  may be at the register GPIFIDLECS which control wether drive the data bus in idle state. So I set the IDLEDRV to be 0, which means not drive the databus in the idle state. But it can't also renumeration.It really confused me. I don't know where the bug is.