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My customer uses our 2pcs TCA9517, for some special reason, there are 1k pull-up and 1k pull-down resistors at B side SDA signal for 1st TCA9517, you can check the application as below. Does this design impact I2C work for 2nd TCA9517? thanks
Regards,
Nanfang
Hello Nanfang,
I don't understand what you are trying to do in this design? What are you trying to accomplish? Why would you put a resistor divider on the SDA line of the B side???? Why is there a "NC", assuming you mean No Connect?
I don't understand what you mean by SDA fixed at 1.65, other than it being a resistor divider??? Is the SDA not connected to a device and meant to be left floating? Please explain what they are trying to do. A block level diagram or schematic might shed some light for me on what is trying to be done.
-Francis Houde