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TUSB9261: SSD Support on the USB3.0 RX and TX line without using DP and DM line (USB2.0)

Parag Bisen
Prodigy 65 points
Part Number: TUSB9261

Hello Team,

I am thinking of using the TUSB9261 in my project and want to connect external  SDD for the storage .

In the Block Diagram it is given that both USB3.0 and USB2.0 are connected to the SATA Gen1/2.
But in my application USB2.0 will be not available as it will be occupy in the different process.
only USB3.0 will be there , so will it be possible to communicate with the SSD with TX and RX line of the USB3.0? or do we required the DP and DM of the USB2.0?

Please provide detail explanation whether we can use only USB3.0 Rx and TX line for the communication with the SSD or not .

  • 0
    TI__Guru*** 145275 points

    Parag:

          USB device always start USB3 communication first which using TX/RX signal. If USB3 enumeration failed, then USB device still start USB2 communication which using DP/DM signal. If you just connect TX/RX signal, you only have option for USB3 , but your system sill works.

    Best

    Brian