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DS90UB971-Q1: DS90UB971 Spread spectrum

hongli Liu
Prodigy 60 points
Part Number: DS90UB971-Q1

Tool/software:

Hi，

      Is the spread spectrum of TI971 only applicable to synchronous mode? Which clock or signal is spread and how is it configured?

Thank you！

  • 0
    TI__Mastermind 24681 points

    Hi Hongli,

    Thanks for reaching out with this question. In synchronous clocking mode the UB971 uses the back-channel signal from a partner deserializer as the reference clock source to generate the forward channel signal. In this case when paired with a FPD4 deserializer such as the UB9702, the deserializer can be configured to apply spread spectrum to the back channel, this spread spectrum is then also applied to the forward channel when in synchronous clocking mode. SSC is also applied to the clk_out of the UB971 which is often sent to the image sensor.

    Best,

    Thomas