IWR1642: DSPCLK IWR1642

Chih-Kuo Hsu

Part Number: IWR1642

Dear Sirs:

p293, DSPCLK is from PLLCLK_600 which is divided from PLLCLK_1200. But I didn't see any multiplier or divider registers inside the TRM to describe.

I want to know is there any PLL divider register between PLLCLK_1200 to PLLCLK_600? Or it is always fixed to divided by 2 in H/W?

Regards,

/ckhsu

over 3 years ago

0 E. Shareef over 3 years ago

TI__Genius 17100 points

Hello,

Thank you for your query. I am reaching out to the design team for a response on this. Someone from my team will get back to you shortly.

-Shareef

0 E. Shareef over 3 years ago in reply to E. Shareef

TI__Genius 17100 points

Hello,

CLK1200 and CLK1800 are fed from the ANALOG to the digital where they have programmable dividers in the SoC/digital.

Hope this helps,

-Shareef

0 Chih-Kuo Hsu over 3 years ago in reply to E. Shareef

Expert 1885 points

Hi Shareef:

Thank you for the response. It's glad to know they have programmable dividers in the SoC. However, I did not see it neither in the datasheet nor in the TRM for 16xx. Would you help me to know where it is located?

Sincerely,

/ckhsu

0 E. Shareef over 3 years ago in reply to Chih-Kuo Hsu

TI__Genius 17100 points

A team member from the software team should be able to assist you with that.

-Shareef

0 Angie Mitchell over 3 years ago in reply to E. Shareef

TI__Genius 10741 points

Hi ckhsu,

For documentation please go to mmwave_sdk_03_06_00_00-LTS\packages\ti\drivers\soc\docs

Here you will find a documented function called int32_t SOC_setPeripheralClock. Is this what you are looking for?

Thank you,

Angie

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IWR1642: DSPCLK IWR1642