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Delfino True Speed

zenman
Prodigy 210 points


Kinds related to a previous post.

http://e2e.ti.com/support/microcontrollers/c2000/f/171/t/279563.aspx

I have a 300 MHz TMS320C28346.  If the access to the internal SARAM is basically 10 - 15 ns which is around 100 MHz what is the 300 Mhz speed good for??  Wouldn't the 150MHz perform the same as the memory speed would be the bottle neck?

I guess, what features benefit from the faster clock speed than the 150 MHz F2833x/2823x based processors.

thanks

  • 0
    Guru 192875 points

    Hi,

     what features benefit from the faster clock speed than the 150 MHz F2833x/2823x based processors

    Clock speed would in-turn effect the ADC sampling rate, PWM periods etc...  

    Also, complex computations like control loop executions, matrices etc are hence effected too.

    Regards,

    Gautam

  • 0 in reply to Gautam Iyer
    TI__Guru 60865 points

    Hi Zenman,

    The post you reference is discussing adding external supplemental memory.  The XINTF module allows you to read some reserved memory space, which is automatically translated into address/data/chip select/read/write strobes.  The effective performance of this is something like 6 wait states.

    The C2834x device does have plenty of internal memory also, and most of it is 0-wait state, so you can definitely take advantage of the increased CPU speed.  See table below: