c6678 VBUS frequency

Gabriele_Giannini

what is the C6678 VBUS frequency? i cannot find that parameter in the device datasheet and i need to know it to configure the Peripheral Settings Control Register for the SRIO peripheral, PRESCALER_SELECT field

over 11 years ago

0 Bill Taboada over 11 years ago

TI__Mastermind 42545 points

Hi Gabriele,

The clocks provided to the peripherals in the C6678 is fraction of the output frequency of the main PLL. This is described in section 7.6 of the data manual. The SRIO vbus interface uses SYSCLK10. SYSCLK10 is equivalent to the main PLL output frequency divided by 3.

Regards, Bill

0 Gabriele_Giannini over 11 years ago in reply to Bill Taboada

Intellectual 925 points

Thanks.

So, just to confirm, even in the register Port IP Prescalar for SRV_CLK Register (PRESCALAR_SRV_CLK) the ip_clk frequency is the SRIO frequency = SYSCLK10? right?

0 Ganapathi Dhandapani95 over 11 years ago in reply to Gabriele_Giannini

TI__Mastermind 28085 points

Hi Gabriele,

yes you are correct, SYS_CLK_VBUSP is equivalent to the CPU/3 frequency. It is fixed.

Refer below link for a definition of the IP_CLK and how to determine frequency.

http://e2e.ti.com/support/dsp/c6000_multi-core_dsps/f/639/p/282116/991490.aspx#991490

Thanks,

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c6678 VBUS frequency