Samsung DVD-V5450 Service Manual page 203

Circuit Operating Descriptions
(3) DVD Audio Output
DIC2 (LOCAL DRAM)
AUDIO INPUT
BUFFER
AUDIO OUTPUT
BUFFER
1) Compressed Data
The audio data inputted to U1 (Vibratto∏) A/V decoder is divided into compressed data and uncompressed data.
It is compressed data that is compressed with multi-channel audio data such as Dolby digital, MPEG, DTS,
WMA,etc. The compressed data inputted to (Vibratto∏) is converted into the uncompressed data of 2, 4,
and 6 channels through U1 built-in audio decoder and is outputted to Data 0 through digital audio interface.
The compressed data is transmitted to external AC-3 amplifier or MPEG/DTS amplifier as IEC-958/1937 trans-
mission data format compressed by U1 built-in IEC-958 output process.
2) Uncompressed Data
The uncompressed data is that data isn't compressed, so it is called CD-DA, LPCM data.
The 2 channels data is converted through audio decoder 2-channel data and Data 0 and are outputted in digital
audio interface.Via IEC-958 output process, they is transmitted to digital amplifier or AC-3/MPEG/DTS amplifier
built in the external digital input source with IEC-958/1937 transmission format.
13-52
Source Data Types :
MPEG-1,-2, Dolby Digital,
CD-DA, LPCM, WMA
HOST or DVD/CD
INTERFACE
Compressed Data WMA
(MPEG, Dolby Digital),
CD-DA, LPCM
AUDIO DECODER
(MPEG, DOLBY DIGITAL,
CD-DA, LPCM, WMA
Fig. 13-47 Audio Decoder and Output Interface Datapath
ZIC1 (Vaddis5E ; A/V DECODER)
IEC-958/1937 IEC-958/1937
OUTPUT PROCESS
2-Channel LPCM, Decoded
Dolby Digital, Decoded MPEG, WMA
Uncompressed 16- or 24-bit
LPCM samples at
fs=44.1,48,96KHz
2-, 4, or 6-
DIGITAL AUDIO
CHANNEL OUTPUT
PROCESS
RECEIVER
DECODER
INTERFACE
(IEC-958/1937)
INTERFACE
Samsung Electronics
or
AUDIO
DAC