DS90UB913A-Q1: Question about PLL reference clock

NOBUO FUJIHARA

Genius 9735 points

Part Number: DS90UB913A-Q1

Hi Champs,

My customer asked question as attached xlsx file.

Can you check and provide answers for those?

Best regards,

Question_about_PLLClock.xlsx

over 8 years ago

0 Charley Cai over 8 years ago

TI__Genius 12866 points

Hi,
Regarding the questions in xlsx file,
1. The 48MHz clock will only fed to PLL module.
2. The 24MHz clock doesn't fed back to any internal module.

Sincerely,
Charley Cai

0 NOBUO FUJIHARA over 8 years ago in reply to Charley Cai

TI__Genius 9735 points

Hi Charley,
Thanks for your aswer.

How about Question 3?
Is it OK to supply sinusoidal clock signal to GPO3?
Regards,
Nobuo

0 Charley Cai over 8 years ago in reply to NOBUO FUJIHARA

TI__Genius 12866 points

Hi Nobuo,
Sorry I missed question 3.

Sinusoidal clock signal should not be used. Ideally a square wave should be used. Please also refer to 913A datasheet section 7.6 for other clock parameter recommendations.

Sincerely,
Charley Cai

Interface

Interface forum

DS90UB913A-Q1: Question about PLL reference clock