A second effect is on the dif'l risetime. Skew will "round off"
the corners of the differential signal, increasing the risetime.
A third effect is another aspect of the resulting common mode
signal. Perfect differential signals have the virtue of creating
zero net ground return current, so connectors with poor (or no)
ground connection and PC boards with split power/ground planes
are not a problem. Skew can turn these into real design issues.
-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Mike Jenkins +-----+ Phone : 408-433-7901 Storage Business Unit LSI|LOGIC| LSI Logic Corp., ms/G813 | | Fax : 408-954-4874 1525 McCarthy Blvd. +-----+ email : firstname.lastname@example.org Milpitas, CA 95035 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~