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sinara-hw / RFSOC-AMC

AMC module with Xilinx RF-SoC and two analog front-end mezzanines for SDR and quantum applications
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Pullup strength on I2C multiplexers #7

Closed filipswit closed 3 years ago

filipswit commented 3 years ago

Is there any reason why there are two values, 2k2 and 10k pullups?

gkasprow commented 3 years ago

Yes. we need low-value resistors that make sure the edges are steep. The high-value resistors make sure we have a high logic state when the port is inactive. If we use all 2k2 then logic low state will be affected.