Samsung DVD-812 Service Manual page 69

Circuit Descriptions
5-8 Audio
5-8-1 Outline
The four data (Data 0~3) outputted from A/V decoder (ZIC1 ; ZiVA4.1) are supplied to DATA 0 for 2-channel
mixed audio output and to DATA 1~3 for Analog audio output (5.1-channel).
The audio data (0~3) transmitted from A/V decoder (ZIC1 ; ZiVA4.1) are converted into analog signal via audio
D/A converter and outputted via post filter and amplifier.
CD and VCD are outputted with only 2 channels audio data and transmit them to Data 0 and Data 1.
Front L/R channel is outputted in mixed audio output (L/R output) and analog audio output and surround L/R,
center and subwoofer aren't outputted.
If DVD of 2 channels source disc is used, it is outputted by the same way with CD and VCD.
If 5.1-channel source disc, front L/R channel is outputted in Data 1, Surround L/R in Data 2 and Center/Sub-
woofer in Data 3. At that time, 5.1 channel can be downmixed in 2 channel in Data 0.
DATA0
LRCK
BCK
DATA1
ZIC1
(ZiVA4.1)
A/V Decoder
DATA2
DATA3
5-24
AIC1
AK4393
D/A CONVERTER
AIC2
AK4356
D/A CONVERTER
5.1 CH DAC
Fig. 5-33 Audio Output Block Diagram
Mixed Audio Output (2-Channel)
POST FILTER AMP
POST FILTER AMP
Mixed Audio Output (5.1-Channel)
AMP
POST FILTER
POST FILTER AMP
POST FILTER
AMP
POST FILTER
AMP
POST FILTER AMP
POST FILTER
AMP
L
R
FRONT L
FRONT R
SURROUND L
SURROUND L
CENTER
SUB WOOFER
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