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    Navigation: All forums > Cores > Message List > Message Post

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    From: richard.hoge at mathstar.com<richard.hoge@m...>
    Date: Fri Apr 13 03:08:50 CEST 2007
    Subject: [oc] I2C Bit State machine
    Top
    Operator Error! My application was setting the STA bit for every
    operation.

    > I am seeing a strange behavior from the state machine in
    > I2C_master_bit_ctrl. When I receive the ACK from my external device
    > (9th clock cycle), I get a 10th clock pulse, then the machine stops
    > in
    > IDLE. I see this in simulation and on the hardware. When looking at
    > the simulation, the state machine is transitioning through the rd_a
    > ->
    > . . .->idle steps twice. Should this be happenining?
    > I epxected the SCL line to be held (high/low?) until either another
    > start or stop. Is this correct?
    > Thanks!
    >
    >

     
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