66AK2H06 DSP + ARM

Rajan Patel

Can the ARM core(s) on the DSP/ARM combo chipsets be used to initialize / configure the different peripherals (SRIO, PCIe, etc)? The block diagram doesn't show a direct connection between the ARM core and the teranet.

Thanks,
Raj

over 10 years ago

0 Raja over 10 years ago

TI__Guru* 81335 points

Hi Raj,

Yes. ARM & DSP core can use the all the peripherals.

Thank you.

0 Rajan Patel over 10 years ago in reply to Raja

Intellectual 480 points

Is there a performance difference when interfacing with the peripherals? The ARM cores have to go through the MSMC. I'm wondering if that causes any major performance when compared to the DSP cores.

0 Raja over 10 years ago in reply to Rajan Patel

TI__Guru* 81335 points

Hi Rajan,

Thank you for the feedback. As for us i know, there is no performance issue.

I am working with the SOC expert on this. We will update you once we get the information.

0 Chad Courtney over 10 years ago in reply to Rajan Patel

TI__Mastermind 30825 points

Rajan,

There is some increased latency when the ARM CorePac is accessing the peripherals for configuration of registers, as compared to the DSP CorePac accessing them.

That said, configuration of peripherals is generally a one time action.

The actually data movement by the IP usage is going to be done independent of this, and will not be through the MSMC_SYS Master but through whatever the appropriate interconnections would be between the IP and it's endpoints (i.e. usually over the TeraNet.)

Best Regards,

Chad

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66AK2H06 DSP + ARM