Pcb routing topology of m-lvds with filters

Abstract

Circuitry and method are described for enabling multiple loads on a differential low voltage differential signaling pair (M-LVDS). A printed circuit board (PCB) contains a M-LVDS driver and leads that route a main channel that carries a differential signal from the driver to an area in which loads are populated. The main channel is split into branches that contain application-specific integrated circuits (ASICs) as the loads. The branches have the same characteristic impedance as the main channel. Filters are disposed in each branch and are coupled between the driver and the ASICs. Each filter is a first order or higher filter. Fewer filters than ASICs are on each branch, with the filters being disposed between the driver and ASICs closest to the driver (with smaller propagation delay). The filters are configured differently at each ASIC input to compensate for the delay.

Dependencies are inferred from the claim text.