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LP8863-Q1: How do you detect PWM input?

Part Number: LP8863-Q1

Hi TI-team

My customer want to know how PWM input is being detected.

The datasheet only mentions PWM DETECTOR.

If the PWM input duty is set to 10%, the code would be 199Ah and the LED PEM would be 80%.

How does the LP8863-Q1 calculate the 199Ah?

Also, please tell me how you measure the 800ns ON time for PWM input duty of 0.016% when the LED PWM is 152Hz.

Does LP8863-Q1 generate 800ns by counter from 20MHz (50ns) OSC?

 

Best Regards,

Koji Hayashi