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DS90UB941AS-Q1: PWM PASS THROUGH

Jiawei Hu1
Expert 6025 points
Part Number: DS90UB941AS-Q1


Hi team,

For 941 pairing with 940, can the PWM signal transfer through GPIO on forward channel? The PWM is 20Khz, and the requirement of delay won't more than 0.1%.

Thanks!

  • 0
    TI__Mastermind 30420 points

    Hi Jiawei,

    GPIO pins can be used to send a PWM signal from the SER to the DES. The maximum frequency of the PWM signal is defined in the AC Electrical Characteristics table in the UB941AS datasheet:

     

    Depending on the PCLK in your system and the single/dual configuration, then the allowable PWM frequency can be determined.

    Best,

    Justin Phan