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TUSB2E221: a few question about TUSB2E221

peng tiansheng
Prodigy 20 points
Part Number: TUSB2E221

Tool/software:

   hello,I would like to ask a few questions about the TUSB2E221 chip. One is whether the pull-up voltage of EQ is 1V8 or 3V3,; the other question is whether it is NC or other connection method when 1-channel USB is not in use

  • 0
    TI__Mastermind 36500 points

    Hi Peng,

    peng tiansheng said:
    One is whether the pull-up voltage of EQ is 1V8 or 3V3,

    The voltage used for the I/O can be set by the VIOSEL pin on the TUSB2E221. It can be either 1.2V or 1.8V:

    peng tiansheng said:
    NC or other connection method when 1-channel USB is not in use

    If only one channel is being used, I would recommend leaving the unused channel floating.

    Please let me know if you have any other questions.

    Thanks,

    Ryan