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Hello In app.note EN-74 from analog devices they are talking about Proper termination of long SPORT traces. ( http://www.analog.com/techsupt/application_notes/application_notes.html ) To calculate the write termination you neat to know the output impedance of the i/o pins of the DSP. But I can not find that information in the data sheet. I can calculate it by the voltage drop and the current and find a value of 3000 and that looks a bit to high. Dos some one know the value of the output impedance? Grad |