ADS9219: FCLK when data frame width = 20bit

Kei Kuwahara

Expert 6250 points

Part Number: ADS9219

Hello team,

On the datasheet Fig 5-3, FCLK is 6*DCLK, when data frame width =24bit (DDR).

What would be the length of FCLK, when data frame width =20bit (DDR)?
Is it going to be 5*DCLK?

Best Regards,
Kei Kuwahara

8 months ago

0 Kei Kuwahara 8 months ago

TI__Expert 6250 points

Hello team,

Can anyone answer to my question?

Best Regards,
Kei Kuwahara

+1 Samiha Sharif 8 months ago in reply to Kei Kuwahara

TI__Expert 6881 points

Hi Kuwahara-san,

Thanks for your patience. I believe when the data frame width is changed to 20 bits, FCLK will still be 6*DCLK in 2-lane DDR mode but the DCLK frequency will change as shown in section 6.3.8:

Best regards,

Samiha

0 Kei Kuwahara 8 months ago in reply to Samiha Sharif

TI__Expert 6250 points

Hi Samiha-san,

Thank you for your answer!

Best Regards,
Kei Kuwahara

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ADS9219: FCLK when data frame width = 20bit