SNLS457B November 2014 – August 2019 DS90UB929-Q1
PRODUCTION DATA.
Consumer Electronics Control (CEC) is designed to allow the system user to command and control up-to ten CEC-enabled devices connected through HDMI, using only one of their remote controls (for example by controlling a television set, set-top box, and DVD player using only the remote control of the TV). CEC also allows for individual CEC-enabled devices to command and control each other without user intervention. CEC is a one-wire open drain bus with an external 27-kΩ (±10%) resistor pullup to 3.3 V.
CEC protocol can be implemented using an external clock reference or the 25-MHz internal oscillator inside the DS90UB929-Q1.