Sony STR-DE845 Training Manual page 26

6. Digital Signal Block
The desired input signal is selected by IC1005/ pin 7(Digital Input Select). The input signal is then applied to
IC1101/pin 3(Digital Audio I/F Receiver) .The digital signal format is still S/P DIF. The Digital Audio I/F Receiver
takes the S/P DIF format, strips off all of the overhead control data and sends the sound data (e.g. Dolby Digital,
DTS and 2CH) to pin 16. The Sound Data stream is shown in the Waveform 6-2.
Oscilloscope Settings;
2V/div
2us
Trigger rising edge
Adjust Hold-off to lock display
WAVEFORM 6-2
Sound Data Stream
The sound data stream then goes to IC1301/pin 84 (Dolby Digital Audio Decoder). The decoded extracts the
three mixed channel signals (Front L/R, Center/LFE and Rear L/R). The outputs from IC1301 are Front L/R
IC1301/pin-24, Center/LFE IC1301/pin-23 and Rear L/R IC1301/pin-22. NOTE: The digital signal flow after
IC1301 is identical to the analog signal flow description. Reference the Analog Signal block diagram circuit
description and signal flow.
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