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This isn't a direct answer to your question, rather an alternate way to solve your problem. You could unsolder one of the remote control RCA connectors from the PCB, then replace it with a bulkhead RCA connector going to a 2-wire cable, then to an IR LED placed inside the amplifier right next to the amp's IR remote control receiver. Make sure the IR LED ...


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I2C and SPI are limited by capacitance, to this end you can trade off speed for distance if needed, SPI also has a secondary limitation at higher data rates of length, as signals can only travel through the copper so fast with I2C assuming a 100KHz bus, the recommendation is 400pF, this can be made up of the "load" of the device, which is generally very low,...


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The devices are not "daisy chained" in an I2C setup. The total number of devices depends on the capacitive load on the bus. Each device, and it's associated traces, add capacitive load. Look at your devices datasheets for how much load each device will tolerate. You'll have to do some math and know something about your PCB layout if you really wanna ...


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