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Frequent questions

  • [FAQ] DP83825I: How to adjust the Output Differential Voltage (VOD) of the DP83825I

    4540.DP83825I VOD Adjustment.pptx

  • [FAQ] DP83TG720R-Q1: Why is my SGMII eye measurement distorted?

    Part Number: DP83TG720R-Q1 SGMII signal is high frequency low-voltage differential signal. Both layout design and measurements need to be accurate for good eye diagram capture. Common board design guidelines: 100ohms+/-10% differential traces…

  • [FAQ] Can an ESD diode experience latch-up?

    Other Parts Discussed in Thread: STRIKE Is there a risk of latch-up with ESD diodes? Should this be taken into design consideration?

  • [FAQ] What is the difference between TLP and 8/20μs clamping voltages on ESD diode datasheets?

    Other Parts Discussed in Thread: ESD321 , STRIKE What is the TLP clamping voltage, and how is it different compared to the 8/20μs clamping voltage? Take the electrical characteristics for ESD321 as an example:

  • [FAQ] LMH0303: How to Tune LMH0303 LMH0307 Cable Fault detection

    Part Number: LMH0303 Other Parts Discussed in Thread: LMH0307 , Background: The LMH0307/3 termination fault detection was never designed to be precise; its purpose is to provide an indication when no cable is connected to the output (near end). The…

  • [FAQ] DS90UB953-Q1: Does this Serializer have failure mode regarding delayed/frozen video transmission?

    Part Number: DS90UB953-Q1 Hi TI expert Can you pls help to confirm if the serializer (DS90UB953)can have Frozen and delayed video output failure modes? If Yes, pls share the safety mechanisms for these failure modes. Thanks Br Weicheng

  • [FAQ] AM6x to DP83867IR: How to read/write register values in DP83867 with addresses above 0x001F?

    Part Number: DP83867IR Problem Statement: Hi Expert, How to read/write register values in DP83867 with addresses above 0x001F? Regards

  • [FAQ] DP83826E: How does Strap1 (CLKOUT/LED1) work on DP83826?

    Part Number: DP83826E DP83826's Strap1 (CLKOUT/LED1) is an internal PU (Pull-up) strap pin. Strapping this high (either by default or external PU) will enable Odd Nibble Detection in the PHY. Strapping this low will disable Odd Nibble Detection as well…

  • [FAQ] TUSB522P: Co-layout with TUSB1002A

    Part Number: TUSB522P Other Parts Discussed in Thread: TUSB1002A Can TUSB522P and TUSB1002A co-layout?

  • [FAQ] DP83822: How to improve margin in 10BaseTe TP_IDL Compliance Tests?

    Part Number: DP83822 The DP83822 has extended registers than can help improve the margins for 10BaseTe TP_IDL tests. Register 0x0023[11:8] = 0x8 by Default Setting 0x0023[11:8] to 0x9 or 0xA can improve Margins. See Pictures below (TP_IDL Load2…

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