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C6713: SYSCLK2 rate setting

Kanae
Guru 10085 points


Hi, all.

I would like to make sure to set SYSCLK of C6713.
Datasheet describes "SYSCLK2 rate must be exactly half of SYSCLK1."
If SYSCLK2 rate sets same as SYSCLK1; ex. 300MHz, what kind of problems
are happened to the following peripheral function?

-HPI
-McASP
-I2C
-McBSP
-32bit Timer; hafl of SYSCLK2
-GPIO

Each peripheral finction must be assumed problems to set the wrong clock rate
such as communication errors and so on.
I need to know the specific issue for each function.

Best regards,
Kanae

  • 0
    TI__Mastermind 43660 points

    Hello Kanae,

    It is strictly recommended to operate SYSCLK2 at half of the frequency of SYSCLK1 or less. If you run the SYSCLK2 at the frequency equal to the SYSCLK1, the peripherals may not operate as expected.

    The peripherals internal blocks are designed in such a way that it could operate reliably when its internal clock source is maintained at CPU clock / 2.

    If you still want to operate SYSCLK2 equal to SYSCLK1, we cannot guaranteed the proper device operation and its all up to your own risk.

    Regards,

    Senthil

  • 0 in reply to Senthilkumar Srinivasan
    Guru 10085 points

    Hi Senthil,

    Thank you for your reply.
    I understand that SYSCLK2 should be set half of the frequency of SYSCLK1 or less
    to meet the specifications.

    For my reference, could you please give me the examples of the peripherals' mulfuncion if you have.

    Best refards,
    Kanae

     

  • 0 in reply to Kanae
    TI__Guru** 116100 points

    Hi Kanae,

    From sw perspective,
    We don't have a examples code for that and never tried which we won't recommend to customers.
    You can try the C6713 examples of SYSCLK2's peripheral with same frequency of SYSCLK1 with your own risk.
    C:\ti\C6xCSL\examples\c6000\dsk6713\csl