Trace impedance should be controlled for optimal performance. Each differential pair should be equal in length and symmetrical and should have equal impedance to ground with a trace separation of 2X to 4X Height. A differential trace separation of 4X Height yields about 6% cross-talk (6% effect on impedance). TI recommends that differential trace routing should be side by side, though it is not important that the differential traces be tightly coupled together because tight coupling is not achievable on PCB traces. Typical ratios on PCB’s are only 20-50%, 99.9% is the value of a well-balanced twisted pair cable. Each differential trace should be as short as possible (< 2 inches preferably) with no 90° angles. These high-speed transmission traces hould be on layer 1 (top layer).

RxC-, RxC+, Rx0-, Rx0+, Rx1-, Rx1+, Rx2-, Rx2+ signals all route directly from the DVI connector pins to the device, no external components are needed.