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TI's PHY for USB3.0

Aqeel Ahmad
Prodigy 90 points
Other Parts Discussed in Thread: TUSB1310A

Can some body tell me if i want to use TI's PHY for USB3.0 controllers for testing purposes, can i use it at lower frequencies or not?

  • 0
    TI__Genius 16440 points

    The USB 3.0 Specification defines fixed bit transfer rates.  The SuperSpeed USB bit rate is full-duplex 5 Gbps withseparate transmit and receive diff pairs that both transfer at 5 Gbps.  In addition it mandates that a device MUST be backwards compatible to USB 2.0.  The USB 2.0 specification again defines fixed bit transfer rates  defined as USB low-speed (1.5 Mbps), USB full-speed (12 Mbps), and USB High-speed (480 Mbps).

    The TUSB1310A is capable of supporting all four data transfer rates, but will only transmit at one of these four rates depending on the configuration of the peripheral and the capabilities of the host/peripheral at the other end of the USB cable.

  • 0 in reply to DHarmon
    Prodigy 90 points

    Thats right Sir and thanks for the response, but actually i was just wondering if there is a possibility to control the frequency of the TI's Phy for testing purposes, like if i am testing my design on some FPGA, in that case i would like to test and debug my design at a lower clock frequency before i really go for the standard frequencies.

  • 0 in reply to Aqeel Ahmad
    TI__Intellectual 2995 points

    It is not possible to slow down the clock(s) in this PHY.

  • 0 in reply to Wes Ray
    Prodigy 90 points

    Got it. Thanks...