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Frequent questions

  • [FAQ] DP83867E: 1000Base-T Ethernet Compliance Register Script

    Part Number: DP83867E Tool/software: Ethernet compliance testing is the process of verifying that Ethernet devices and systems adhere to established industry standards and protocols. The current Rev C of SNLA239C provides a script that excludes essential…

  • [FAQ] DS125BR111: EQ boost and gain curves

    Part Number: DS125BR111 Other Parts Discussed in Thread: DS100BR111 , EQ BOOST settings are the same as the CTLE settings. I am going to give a more concrete definition of the CTLE gain curves. Above are the CTLE gain curves for the DS100BR111. If…

  • [FAQ] Do PCIe redrivers support polarity inversion of differential channels?

    Part Number: DS320PR410 Do PCIe redrivers support polarity inversion of differential channels? How can this affect the schematic and layout of my PCIe redriver?

  • [FAQ] DS110DF111: How common 10G ethernet specifications fit into a typical application

    Part Number: DS110DF111 In this FAQ, I will explain how common 10G ethernet specifications fit into a typical application. The below application diagram comes from the DS110DF111 datasheet. Many 10G ethernet specifications are defined by the IEEE…

  • [FAQ] DP83869HM: Bridge Mode Clarification

    Part Number: DP83869HM The DP83869HM supports two types of Bridge Modes to translate data between two MAC interface types. The two types are: RGMII-to-SGMII mode SGMII-to-RGMII mode The naming convention implies MAC-to-PHY and the functionality…

  • [FAQ] LMH1297: Why should I pay attention to the return loss performance?

    Part Number: LMH1297 When signal goes through two different transmission line, signal may get reflected based on difference between these two medias impedances. Return loss is the ratio of the reflected signal to the launched signal. If signal goes…

  • [FAQ] TUSB522P: Linear vs limited re-driver

    Part Number: TUSB522P Other Parts Discussed in Thread: TUSB1002A , TUSB1044 , TUSB542 Hi Experts, I see parts like the TUSB1002A and 1044 described as "linear" re-drivers while the TUSB522P is a "limited" re-driver. Which one is better to use in a USB…

  • [FAQ] TUSB1002A: What loss does the TUSB1002A compensate for in a USB system?

    Part Number: TUSB1002A Other Parts Discussed in Thread: TUSB1064 , TUSB1044 Hi Experts, Will the TUSB1002A recover the loss before or after the re-driver? Best, Shane

  • [FAQ] DP83867CR: DP83867 Harmonic Distortion compliance test mode

    Part Number: DP83867CR How to configure test mode for Harmonic Distortion Compliance test?

  • [FAQ] TS3USB221: Choosing The Right USB2.0 Passive Mux

    Part Number: TS3USB221 Other Parts Discussed in Thread: TS3USB30E , TS3USB3000 , , , I want to implement a USB2.0 multiplexer (mux) into my system, and have certain requirements for the functionality of the mux. What choice would be best for my system…

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