ZHCSJH7 March 2019 DS90UB940N-Q1
PRODUCTION DATA.
The deserializer has a PDB input pin to ENABLE or POWER DOWN the device. This pin can be controlled by the host or through the VDDIO, where VDDIO = 3 V to 3.6 V or VDD33. To save power, disable the link when the display is not needed (PDB = LOW). When the pin is driven by the host, make sure to release the pin after VDD33 and VDDIO have reached final levels. No external components are required for this task. When the PDB input pin is driven by the VDDIO = 3 V to 3.6 V or VDD33 directly, a 10-kΩ resistor to the VDDIO = 3 V to 3.6 V or VDD33, and a >10-µF capacitor to the GND are required (see Figure 38).