> Good point. I cannot find this scenario in the datasheet. Please allow me > some time to test this scenario. I will update you with the results. By data sheet, do you mean documentation from Synopsis, or is this an internal document? Assuming the hardware engineers have not hacked up the Synopsis IP too much, the Synopsis documentation is probably the most accurate you have. > > What about 1000BASE-X when AN is enabled or disabled and then switching > > to SGMII? > > > According to the datasheet, a soft reset is required. Do you know if this is specific to Intels integration of the Synopsis IP, or this is part of the core licensed IP? We need to understand when we need a quirk because intel did something odd, or it is part of the licensed IP and should happen for all devices using the IP. Andrew