DC10 E, DC20 E
TECHNICAL DESCRIPTION
17
4-5 Audio Signal Flow
< AIF >IC801
Out ALC (Auto Level Control), fading, and amplification of various output signals. For the beep tone issued at ejection, etc., the
signal from the CCM MI-COM is generated in the circuit and changed over in the AIF.
The microphone amplifier, HPF, ALC, A/D, D/A, and digital I/F, SPEAKER DRIVER with ALC circuits are contained in this IC.
It is also used for changeover between ordinary voice sounds and beep sounds.
< BACK END >
At the time of recording, audio digital signals are compressed into a Dolby AC-3 form.
At the time of playback, demodulation processing is performed for inversion.
Fig. 14
SPEAKER
DRIVER
IC101
CCM
MI-COM.
IC801
AIF4
IC1103
DIGIC DV
IC2300
BACK
END
IC810
AUDIO
PLL
FRONT
END
+
−
L
L
R
L
R
R
MIC
HEAD
PHONE
AV
JACK
B EEP
Serial Control
SPEAKER
MEM IF
SDRAM
DVD
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