Yamaha HTR-5450 Service Manual page 16

RX-V520/RX-V520RDS/HTR-5450/HTR-5450RDS
2. FRONT CH
The input signal is automatically identified and switched in the priority order of dts ➔ DOLBY DIGITAL ➔ PCM AUDIO ➔
Analog (A/D) according to the signal detection.
The front channel signal is output in full bit to the main channel.
Signals are output through DSP (see the signal path in the figure below) without using the external DRAM. (Head margin
included)
FRONT NORMAL [Remote control code: 7A-8B (PRG 4)]
FRONT MIX [Remote control code: 7A-8C (PRG 5)]
[2ch/Multi] *Multi: Lo/Ro Down Mix
ANALOG CODEC
(A/D)
AK4527
DIGITAL
15
• The head margin is included and the front channel signal is output to the main
channel.
Head margin:
L/R: Mute, Center: Mute, RL/RR: Mute, SWFR: Mute.
Reference data
INPUT: DVD ANALOG
SWFR: 50Hz, Others: 1kHz
Condition
Both ch, -20 dBV, volume -10 dB
• The head margin is included and the front channel signal is output to the main
channel.
Head margin:
L/R: 0dBFS, Center: Mute, RL/RR: Mute, SWFR: Mute.
Reference data
INPUT: DVD ANALOG
SWFR: 50Hz, Others: 1kHz
Condition
Both ch, -20 dBV, volume -10 dB 22.5 dBV
AC3D3 YSS928
Main DSP Sub DSP
(Decoder)
L/R
INTERNAL
DIR
SDOxx represents a terminal name of AC3D3.
The shaded square (
operate.
MAIN L/R CENTER
- ∞ - ∞
MAIN L/R CENTER
- ∞
0dB or
L/R SDOB2 Mute
SDOB1 Mute
SDOB3 Mute
4M DRAM
) means that the element indicated in it does not
RL/RR SWFR
- ∞ - ∞
RL/RR SWFR
- ∞ - ∞
CODEC
L
(D/A)
R
AK4527
C
SWFR
RL
RR