MLVDS has larger signaling amplitude when compared to BLVDS, and therefore, it requires more drive current. Similar to BLVDS, the effective impedance of these systems is lower than a typical pair of PCB traces due to backplane capacitance, the connectors on the backplane, and the line stubs. The following illustration shows an example implementation using 35 Ω stub resistors at every drop and 50 Ω stub resistors on either side of the bus. The termination values at the ends of the bus, which can range anywhere between 50 Ω and 70 Ω, must be optimized to match the effective differential impedance of the bus.
Figure 1. MLVDSE System Diagram
