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TUSB211A: Trace lengths supported

De Ken Lee
Prodigy 80 points
Part Number: TUSB211A

Tool/software:

Hi TI team,

It is stated that the TUSB211A supports up to 5m cable length.

1. Does this translate directly to a 5m PCB trace length as well? If not, what is the supported trace length for the part?

2. If I have a 13 inch trace route for the USB2.0 (device to device connection), would I have to place the re-driver near the destination device? or can it be placed in the middle as well?

Regards,

Ken.

  • +1
    TI__Mastermind 37740 points

    Hi Ken,

    De Ken Lee said:
    1. Does this translate directly to a 5m PCB trace length as well? If not, what is the supported trace length for the part?

    Yes, as long as the USB2 traces are designed properly, this can be translated to a 5M PCB trace length.

    De Ken Lee said:
    2. If I have a 13 inch trace route for the USB2.0 (device to device connection), would I have to place the re-driver near the destination device? or can it be placed in the middle as well?

    We recommend the redriver be placed closer to destination device/connector, that way the redriver can improve the signal quality right before it enters the cable or device. In the case of 13 inches, for redriver settings, I would recommend starting with settings at level 0 or level 1 EQ settings just to ensure that the redriver does not cause any overcompensation.

    Please let me know if you have any other questions.

    Thanks,

    Ryan