Yamaha DSP-AX1/RX-V1 Service Manual page 19

2. DECODER THR.
The input signal is automatically identified and switched in the priority order of dts > DOLBY DIGITAL
> PCM AUDIO > Analog (A/D). There are two sub-menu items (YSS918/908, FULL BIT). This menu is
used to check the signal passage of the decoder LSI (YSS918, YSS908).
2. DECODER THR.
YSS918/908
YSS918/908 [Remote control code: 7A—93 (PRG12)]
(In the case of 2-ch source)
• AC3D2av outputs L/R input signals from L/R (SDA200, Lt/Rt (SDA21) and C/LFE (SDA22).
• AC3D2av outputs the Lt/Rt output signals of AC3D2av from LS/RS (SDA10).
• DSP6#1 outputs the L/R input signals to L/R (SD610) and RC (SD615, L only), C/LFE (SD611) input
signals to C/LFE (SD611), Lt/Rt input signals to FL/FR (SD614) and LS/RS input signals to RLdr/
RRdr (SD612) respectively.
• DSP6#2 outputs the output signals of DSP6#1 to L/R (SD620), C/RC (SD621), RL/RR (SD623), FL/
FR (SD622) and SWL/SWR (SD624).
Note: (SDAxx) represents the terminal name of AC3Dav and AC3D2av.
(SDxxx) represents the terminal name of DSP6#1 and DSP6#2.
Reference
CD ANALOG IN
VOLUME
PRE OUT
MAIN L (1kHz)
MAIN R (1kHz)
CENTER (1kHz)
REAR CENTER (1kHz)
FRONT L (1kHz)
FRONT R (1kHz)
DIGITAL
YSD917
ANALOG
AK5383
(In the case of multi-ch source)
• AC3D2av outputs dts or DOLBY DIGITAL encoded input signals from Lt/Rt (SDA21) without decod-
ing.
• AC3Dav processes Lt/Rt output signals of AC3D2av by dts or DOLBY DIGITAL decoding and out-
puts them to LS/RS (SDA10) and RC (SDA12, L only) through 3/0 down-mixing.
• DSP6#1 outputs the LS/RS input signals to RLdr/RRdr (SD612) and the RC (L only) input signals to
RC (SD615, L only).
• DSP6#2 outputs the output signals of DSP6#1 to RC (SD621, R only) and RL/RR (SD623).
Reference
CD DIGITAL IN
VOLUME
PRE OUT
MAIN L
MAIN R
CENTER
REAR CENTER
DIGITAL
YSD917
ANALOG
2. DECODER THR.
FULL BIT
: – 20dBV, Both ch
: MAX
: – 3.5dBV REAR L (1kHz)
: – 3.4dBV REAR R (1kHz)
: – 3.2dBV SW L (50Hz)
SW R (50Hz)
: – 3.4dBV
: – 3.5dBV SW MONO (50Hz)
: – 3.4dBV
IC7
DSP6#1 YSS910
IC2 IC6
L/R
AC3D2av
DIR5
C/LFE
YSS918
Lt/Rt
PCM THR
Lt/Rt
IC3
IC4
A/D
LS/RS
AC3Dav
YSS908
DD/dts
DECODE
IC5
: 1kHz, – 20dBV
: MAX
: + 4.5dBV FRONT L
: + 4.6dBV FRONT R
: + 4.9dBV REAR L
: + 4.6dBV REAR R
IC7
DSP6#1 YSS910
IC2 IC6
AC3D2av
DIR5
YSS918
Lt/Rt
PCM THR
Lt/Rt
IC3
IC4
A/D
LS/RS
AC3Dav
AK5383
YSS908 RC/ZERO
DD/dts
DECODE
IC5
: – 3.4dBV
: – 3.3dBV
: – 3.3dBV
: – 3.3dBV
: + 2.7dBV
L/R
FILTER
DF1704
IC57
IC8
DSP6#2 YSS910
C/RC
FILTER
DF1704
L/R
C/LFE
LFE RC
RLdr/RRdr FL/FR
FILTER
DF1704
FL/FR
RC/ZERO
RL/RR FILTER
DF1704
SWL/SWR FILTER
DF1704
: + 4.6dBV
: + 4.6dBV
: + 4.7dBV
: + 4.7dBV
IC8
DSP6#2 YSS910
RC
FILTER
DF1704
RC
RLdr/RRdr
RC/ZERO
RL/RR
FILTER
DF1704
DSP-AX1/RX-V1
D/A
L
PCM1704
D/A
R
PCM1704
D/A
C
PCM1704
D/A
RC
PCM1704
D/A
FL
PCM1704
D/A
FR
PCM1704
D/A
RL
PCM1704
D/A
RR
PCM1704
D/A
SWL
PCM1704
D/A
SWR
PCM1704
D/A
RC
PCM1704
D/A
RL
PCM1704
D/A
RR
PCM1704
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