Samsung DVD-HR773 Training Manual page 22

1. I nput bl ock
DVD- HR773 has three stereo line input terminals(AV1,AV2,AV3) and internal TV- audio
from RF Tuner Block.
These four analog audio signal source are selected in IC216.
The switching operation of IC216 is controlled by FIC1(Front Micom) with I2C
interface. This analog audio signal is convereted to by AD convert. VICA is
syncronized by three Digital clock from U1, and output Digital signal
2. Out put Bl ock
DVD- HR773 has four stereo analog line out terminal, and two digital output
terminal.
Decoded signal by U1 is inputted to VIC1( D/A converter), then filtered and amplified
by IC217(OP- amp),and finally ouputted via AV switch IC(IC216).
The Signal outputted via AV2 is equal to those of AV1(Scart), and RCA Analog ouput
terminal in normal mode.
The Digital audio signal is drived by U1 inverter and ouputted via Optical(TOS- link)
and Coaxial(S/PDIF) terminal.
switchig IC) - >VIC1(A/D coverter) - > U1(MPEG Encorder/Decoder)
So audio signal flows like this : AV input Jack - > IC216(Mux switchig IC)
- - >VIC1(A/D coverter) - > U1(MPEG Encoder/Decorder)- >Digital ouput or
VIC1(DAC) - > IC216((Mux switchig) - > AV output Jack