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Hi Team,
Can you please help answer the follow question?
Looking at changing the i2c speed from 330kHz to 100kHz on the i2c bus on the deserializer. Does that change the back channel communication frequency? It was not clear to me from the datasheet if the back channel and i2c share a clock divider.
Also, for the 954 – 953 link, is it possible to have two different i2c speeds on the serializer and deserializer?
Thank you,
Delaney
Hi Delaney,
That will depend on the use case and exact value they want to use. Here is a guide to calculating the min (and max) pull-up resistor value for I2C: /cfs-file/__key/communityserver-discussions-components-files/138/7183.I2C-Bus-Pullup-Resistor-Calculation.pdf. Below is the equation for calculating the minimum resistor value:
The following table from the DS90UB954-Q1 datasheet has the parameters based on your use case:
Please let me know if you have any additional questions.
Sincerely,
Ryan
