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  • TUSB4020BI-Q1: Could you tell me the meaning of PWRCTL_POL in TUSB4020BI-Q1? I don't quite understand the function corresponding to the high and low status of this pin

    TI Thinks Resolved
    Part Number: TUSB4020BI-Q1 Other Parts Discussed in Thread: TPS2561 Could you tell me the meaning of PWRCTL_POL in TUSB4020BI-Q1? I don't quite understand the function corresponding to the high and low status of this pin
    • Answered

  • TUSB4020BI-Q1: Over-riding the downstream power control outputs

    Resolved
    Part Number: TUSB4020BI-Q1 A device attached to one of our TUSB4020BI-Q1 downstream ports needs to have it's power cycled occasionally. Is it possible to do this via the TUSB4020BI-Q1 or would we need to add extra logic to the PWRCTL1 signal? (I couldn…
    • Resolved

  • TUSB4020BI-Q1: Abs max rating of the D+/D- lines

    Part Number: TUSB4020BI-Q1 What is the abs max rating for the data lines on the TUSB4020BI-Q1? Thanks, Mark
    • Answered

  • TUSB8020B-Q1: How to determine the storage space size of external EEPROM of TUSB4020BI-Q1 and TUSB8020B-Q1?

    Resolved
    Part Number: TUSB8020B-Q1 Other Parts Discussed in Thread: TUSB4020BI-Q1 , Hi, Team Hope you are doing well! My customer is evaluating our TUSB8020B-Q1 and TUSB4020BI-Q1. From their datasheets, they both need to use an external EEPROM. When customer design…
    • Resolved

  • TUSB4020BI-Q1: Unused Pin and Power Consumption Inquiry

    TI Thinks Resolved
    Part Number: TUSB4020BI-Q1 Hi All, We have 2 questions when using TUSB4020BI-Q1 . 1. Since we only need the TUSB4020BI-Q1 as a USB 2 HUB, no power switch or SMBus/I2C is needed. May I know how to configure below pins? SCL / SMBCLK (Pin 2) …

  • TUSB4020BI-Q1: May I ask what is the voltage tolerance value of D+/- output of TUSB4020BI-Q1 HUB? It is not specified in the manual. Will D+ short circuit to VBUS 5V damage the HUB?

    Part Number: TUSB4020BI-Q1 Other Parts Discussed in Thread: TUSB4020BI May I ask what is the voltage tolerance value of D+/- output of TUSB4020BI-Q1 HUB? It is not specified in the manual. Will D+ short circuit to VBUS 5V damage the HUB?

  • TUSB4020BI-Q1: Can't identify TUSB4020BI using linux "lsusb" command.

    Part Number: TUSB4020BI-Q1 Hi, I'd like to know why we can't see the USB 2.0 HUB in Linux using "lsusb" command. we checked voltages: 1. VDD_1P1 (Equal to 1.16 on board) 2. VCC_3V3 (Equal to 3.34 on board) Note: I understood the the EEPROM…
    • Answered

  • TUSB4020BI-Q1: The hub shows up on the host, but there are errors

    Resolved
    Part Number: TUSB4020BI-Q1 This is a new chip for me; the hub shows up on the host, both Windows and Linux, but windows indicated driver issues and Linux says "can't open device"... Anyone encounter this before?
    • Resolved

  • TUSB4020BI-Q1: USB Hub draws alot of current, schematic review needed

    Part Number: TUSB4020BI-Q1 Hello TI Forum, I've made a LGA to USB adapter for IoT modules. For some reason the TUSB4020BI-Q1 draws alot of current from the 1.1 V LDO and it gets very hot. (And eventually breaks if supplied long enough). I've so far…
    • Answered

  • TUSB4020BI-Q1: TUSB4020BI-Q1: Clarification about the supported speeds by the USB Hub

    Resolved
    Part Number: TUSB4020BI-Q1 Hello team, I need to connect 2 USB devices to and HUB, one of them is High Speed (USB Audio Class 2.0) the other one is Full Speed (VCOM). Can TUSB4020BI-Q1 support both of them at maximum allowed speed, especially USB audio…
    • Resolved

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