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Frequent questions

  • [FAQ] DP83867IR: Where are RX_ER and COL in DP83867IR/CR PAP?

    Part Number: DP83867IR Tool/software: RX_ER and COL in SNLS484G should be in pins 54 and 55, respectively. In this document, there is a typo where these pin numbers are omitted.

  • [FAQ] TUSB2E221: How do I update my PCB design from using the TUSB2E22 to the TUSB2E221?

    Part Number: TUSB2E221 Other Parts Discussed in Thread: TUSB2E22 Tool/software: The TUSB2E221 is the latest 2-port eUSB2 repeater. Released in 2024, it contains updates that allow it to conform to the latest eUSB2 v1.2 specification as well as adding…

  • [FAQ] LMH1297: EOM - Eye Opening Monitor - How to Re-Construct Eye Diagram

    Part Number: LMH1297 Tool/software: CDR based devices stream out raw hit counts by sweeping voltage DAC and phase DAC to sample incoming signalin both voltage and time domain. Using this raw data, eye diagram can be re-constructed. Attached file explains…

  • [FAQ] DS80PCI102: PCIe RX Detect Pulse Timing

    Part Number: DS80PCI102 Tool/software: In PCIe applications, transmitter - while it is in high impedance - sends out pulses until it realizes a change in RC time constant of the response. For further details note This FAQ . For further details, note scope…

  • [FAQ] DS90UB971-Q1: How can I optimize my FPD-Link camera design for system level ESD immunity?

    Part Number: DS90UB971-Q1 Other Parts Discussed in Thread: DS90UB960-Q1 , DS90UB953-Q1 Tool/software: How can I optimize my FPD-Link ADAS design to achieve better performance in system level ESD immunity testing? When striking my system with ESD pulses…

  • [FAQ] DS280DF810: The new set of DS2x0DFx10 devices Version IDs do not match the Version IDs of previous set (Register 0xF0)

    Part Number: DS280DF810 Tool/software: In TI's DS2x0DFx10 Ethernet retimer devices, there is a Version ID register that can be used to read back the device version. For groups implementing this device, we frequently see them checking this Version…

  • [FAQ] DS110DF111: Does TI's Ethernet Signal Conditioning Portfolio Support Base-T Ethernet?

    Part Number: DS110DF111 Tool/software: Texas Instruments has a wide range of signal conditioning devices for Ethernet. Sometimes we receive questions regarding a signal conditioning device's ability to support Base-T Ethernet. The majority of TI…

  • [FAQ] Measuring the maximum drive distance of a signal conditioner across a cable

    Part Number: TDP1204 Tool/software: Most redrivers and retimers advertise their equalization capabilities in dB but its difficult to quantify what that represents in terms of cable length. This FAQ is a guide to determine how long of a cable can be supported…

  • [FAQ] Why TUSB804x hub can not be detected in SMBUS mode

    Part Number: TUSB8042A Tool/software: When the SMBus interface mode is enabled, the TUSB804x supports read block and write block protocols as a receiver-only SMBus device. The TUSB804x will wait indefinitely for configuration by the SMBus host and will…

  • [FAQ] TUSB8041A: what is difference between I2C mode and SMBUS mode for TUSB80xx hub

    Part Number: TUSB8041A Tool/software: In I2C mode, Hub is master and I2C is used to read / write external EEPROM . Hub configuration can be changed by reading external EEPROM In SMBUS mode, hub is receiver, you can change hub configuration by changing …

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