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DS90UB953A-Q1: Question about the S21 in channel requirement

Fortune Xu
Intellectual 1400 points
Part Number: DS90UB953A-Q1

Hi team,

We have an question about the S21 in 95x channel requirement file below, for instance, if the forward channel rate is 3Gbps(1.5GHz), how to compare the real test result of customer's board with our requirement? How to ensure the requirement which are not included in the example point below such as 1.5GHz, 1.7GHz, etc.

  • 0
    TI__Guru** 100310 points

    Hello Fortune,

    We do not care about the data rate, we care about the Forward channel and back channel speeds. If you are using Sync mode, then you should compare the customer's result up to the max frequency which is 2.1GHz. Starting from the back channel frequency which is 25MHz.

    If using non-Sync mode, then you can calculate the forward channel speed, and compare up to that frequency, starting from 1/2 of the BC speed (5MHz)