Samsung DVD-C600, Service Manual, Page: 69 / 123

Circuit Descriptions
5-20 Samsung Electronics
5-7-2 DVD Audio Output
1) Compressed Data
The audio data inputted to VIC1 (ZiVA-3) 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, etc.
The compressed data inputted to VIC1 (ZiVA-3) is converted into the uncompressed data of 2, 4, and 6 channels
through ZiVA-3 built-in audio decoder and is outputted to Data 0, 1, 2, and 3 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 ZiVA-3 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 Data 1 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.
AUDIO INPUT
BUFFER
AUDIO OUTPUT
BUFFER
RECEIVER
or
DECODER
(IEC-958/1937)
AUDIO
DAC
HOST or DVD/CD
INTERFACE
IEC-958/1937
OUTPUT PROCESS
IEC-958/1937
INTERFACE
AUDIO DECODER
(MPEG, DOLBY DIGITAL,
CD-DA, LPCM
DIGITAL AUDIO
INTERFACE
2-, 4, or 6-
CHANNEL OUTPUT
PROCESS
Uncompressed 16- or 24-bit
LPCM camples at
fs=44.1,48,96KHz
2-Channel LPCM, Decoder
Dolby Digital, Decoded MPEG
Compressed Data
(MPEG, Dolby Digital),
CD-DA, LPCM
VIC4, 10 (LOCAL DRAM)
VIC1 (ZiVA-3 ; A/V DECODER)
Source Data Types :
MPEG-1,-2, Dolby Digital,
CD-DA, LPCM
Fig. 5-25 Audio Decoder and Output Interface Datapath