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Original question:

DS90UB964-Q1: REFCLK Frequency Tolerance

DS90UB964-Q1: 1.2Gbps REFCLK =23MHz or 25MHz

Amelie Zheng
Genius 10865 points
Part Number: DS90UB964-Q1

Hi team,

my customer use  1280*960@30fps and data rate is 1.2Gbps.

So do they need to select the 23MHz REFCLK based on the following table?

Actually I talked with customer that 23MHz is unusual.

May I confirm that whether customer could use 25MHz osc as their REFCLK if the data rate is 1.2Gbps?

Thanks!

  • 0
    TI__Guru** 103215 points

    Hello Amelie,

    The highlighted section above is related to CSI-2 output speed which is asynchronous to the camera input data rate. It is not required that the customer selects 23MHz for the oscillator. The standard recommended REFCLK is 25MHz which would be suitable for this configuration but anywhere from 23-25MHz would be acceptable

    Best Regards,

    Casey