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Frequent questions

  • [FAQ] LMH1297: SDI and Ethernet CDRs eye diagram capture

    Part Number: LMH1297 Tool/software: SDI and Ethernet retimers provide a feature to capture: 1). HEO/VEO indicating horizontal and vertical eye opening 2). Additionally one can capture post equalized eye diagram as well. Attached file discusses…

  • [FAQ] IxC

    FAQ: Logic and Voltage Translation > IxC (CTRL + F) or (CMD + F) to search key words on this page! Level Translation: [FAQ] How do the LSF translators work? [ FAQ] What is PassFET Hangtime? Buffers: [FAQ] What is a buffered LOW?…

  • [FAQ] DP83826E: DP83826E: How do I determine the MSE/SNR levels using DP83826?

    Part Number: DP83826E Tool/software: MSE/SNR can be determined via Reg 0x218. Please note that this is an extended register and needs 4-step extended register access to read appropriate values. Once the hex value is obtained, convert to decimal…

  • [FAQ] DS320PR810: Can PCIe redriver equalization be bypassed or turned off?

    Part Number: DS320PR810 Other Parts Discussed in Thread: SN75LVPE5412 , Tool/software: Could I disable the equalization of a TI PCIe redriver by setting the EQ index to 0?

  • [FAQ] DS320PR810: What happens if redrivers are cascaded?

    Part Number: DS320PR810 Tool/software: Is cascading redrivers (placing multiple redrivers between root complex and endpoint, one after another) a valid method for extending the reach of a PCIe link beyond what one redriver can handle?

  • [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…

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