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Frequent questions

  • [FAQ] TCAN1057A-Q1: why is the CAN Mosfet and Diode used

    Part Number: TCAN1057A-Q1 Tool/software: Hello experts！ I have a question about the purpose of the Mosfet and diode in CAN interface？ Further，How does CAN implement arbitration and error correction functions through hardware?

  • [FAQ] DP83822HF: How does power up sequence affect PHY operation?

    Part Number: DP83822HF Tool/software: For DP83822, there is a guidance where AVD and VDDIO must not exceed 0.3V prior to complete supply ramp, with an additional footnote suggesting AVD to ramp up after VDDIO to avoid false detection of VDDIO. False detection…

  • [FAQ] What is Stuck Bus Recovery?

    Other Parts Discussed in Thread: TCA4307 FAQ: Logic and Voltage Translation > IxC >> What is Stuck Bus Recovery? Stuck Bus Recovery is a mechanism built into an I2C device that automatically attempts to free the SDA bus during a stuck LOW condition…

  • [FAQ] What Makes an I2C Buffer Hot-Swappable?

    Other Parts Discussed in Thread: TCA9511A FAQ: Logic and Voltage Translation > IxC >> What Makes an I2C Buffer Hot-Swappable ? Hot-Swap also known as Hot-Plug means the unpowered device can be inserted into a live backplane without disruption of service…

  • [FAQ] DP83867E & DP83869HM: Expected Back-Powering on Power Supply Pins

    Part Number: DP83867E DP83869HM Other Parts Discussed in Thread: DP83869HM Tool/software: The following FAQ applies to the DP83869HM and all versions of the DP83867: E/IS/CS/IR/CR The Analog Supply pins (VDDA2P5 & VDDA1P8) power the MDI portion…

  • [FAQ] What Connections of I2C Buffers are not Allowed?

    Other Parts Discussed in Thread: TCA9617B , TCA9509 , TCA9801 , TCA9800 , TCA9803 , TCA9802 , TCA9511A , TCA4307 FAQ: Logic and Voltage Translation > IxC >> What Connections of I2C Buffers are not Allowed ? Part Numbers: TCA9517 , TCA9517A , TCA9509…

  • [FAQ] What are the different I2C Buffer Direction Control Mechanisms?

    Other Parts Discussed in Thread: TCA9517A , TCA9517 , TCA9511A , TCA4307 FAQ: Logic and Voltage Translation > IxC >> What are the different I2C Buffer Direction Control Mechanisms ? I2C buffers implement direction control mechanisms to determine which…

  • [FAQ] DP83822I: Does Oscillator Clock or other external clock source to XI pin need to be stable before PHY power?

    Part Number: DP83822I Tool/software: Yes, Clock in external clock mode shall be available at power ramp. If not available, it is recommended to hold RESET_N low and release it at least 100 us aer external clock is stable.

  • [FAQ] What is the "VILC" Electrical Spec in I2C Buffers?

    Other Parts Discussed in Thread: TCA9517A Part Numbers: TCA9517A , TCA9517 , TCA9509 FAQ: Logic and Voltage Translation > IxC >> What is the "VILC" Electrical Spec in I2C Buffers ? VILC = Input LOW Contention Voltage VILC is the internal voltage…

  • [FAQ] What is a buffered LOW?

    Part Number: TCA9517 Other Parts Discussed in Thread: TCA9617B FAQ: Logic and Voltage Transla tion > IxC >> What is a buffered LOW ? A "buffered LOW" is the output voltage of the buffer when a low voltage input (VIL) is present on the input. This…

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