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DM3730 McBSP

Jamie Maxwell
Expert 1530 points

Other Parts Discussed in Thread: DM3730

I would like to use the McBSP to bring data into the DM3730 as a slave. What is the highest data rate I can bring in?

It looks to me that the max clock I can use for Slave mode is 24MHz. Is this correct?

Thanks

  • 0
    TI__Mastermind 29535 points

    You should be able to run the bit clock up to 48Mhz in both slave and master modes.

    Where did you see that the max is 24Mhz for slave mode?

      Paul 

  • 0 in reply to PaulM
    Expert 1530 points

    I searched through some of the McBSp documentation and the the highest clock rate I could find was 24MHz. I did not find anywhere where it actually discussed the Maximum. Can yoiu please point me to where I can find this information?

    I am also looking to try and find out how to DMA toa parrallel port and see what the maximum rate for this would be (i.e. transactions/second)

    I need to get a lot of data into the DM3730.

    Thanks

     

  • 0 in reply to Jamie Maxwell
    TI__Mastermind 29535 points

    Take a look at table 6-46 in the datasheet (http://www.ti.com/lit/gpn/dm3730).

    The table states "Output" clock but the timing also applies if the clock is setup as an input. The McBSP uses a loopback clock therefore the transmitter and reciever will see whatever clock is present at the pin. In master mode the clock is generated by the Sample rate Generator (SRG) and in slave mode it's provided by the master.

      Paul