TC32LX85 Audio Circuit Block Diagram
TC32LX85 Audio Circuit Block Diagram
76
IC4003 of the A board handles the audio process of all inputs. Analog audio of the tuner and audio signals from
composite, component, and DVI inputs are connected to IC4003 for selection and process..
IC4503 converts the incoming HDMI audio into serial data and outputs to IC4003. Digital television reception of
the tuner is output in the form of a transport stream that contains MPEG2 video and AC3 audio. The transport stream enters
the DTV decoder section of IC8001 where the audio signal is extracted and converted to serial data. The DTV audio data is
then output to IC4003 for processing.
IC4003 provides three audio outputs. One output is either AC3 or PWM audio connected to the digital audio
output jack. A second output is analog audio provided to IC4002 for amplification and then the headphone jack. The third
output is adjusted for volume, bass, treble, and balance and then output as PWM data to the audio amplifier IC2301. The
amplified two channel PWM data is output to the right and left channel speakers for sound reproduction.
To Next Page
Loading...
