SNLS477B October 2014 – November 2018 DS90UB948-Q1
Bypass capacitors must be placed near the power supply pins. At a minimum, use four (4) 10-µF capacitors for local device bypassing. Ferrite beads are placed on the two sets of supply pins (VDD33 and VDDIO ) for effective noise suppression. The interface to the graphics source is LVDS. The VDDIO pins may be connected to 3.3 V or 1.8 V. A capacitor and resistor are placed on the PDB pin to delay the enabling of the device until power is stable. See Figure 47 for a typical STP connection diagram and Figure 48 for a typical coax connection diagram.