Ac-3/Dts Through; Pro Logic - Yamaha RX-V496 Service Manual

No.3 AC-3/DTS THROUGH
The input is digital signal only. AC-3 (DOLBY DIGITAL) or DTS Digital Surround decoding operation is executed,
according to the input source.
1. STATUS(BINARY FORM)
AC-3 (DOLBY DIGITAL) decoded signals are output to each channel via AC3D2av.
The AC-3 (DOLBY DIGITAL) signal status data will be displayed in the FL display using a binary number.
CODEC.ADC
ANALOG IN
CS4227
DIR2
DIGITAL IN
YM3436
: This shows that the device is not operating.
AC-3 Status Info. : bit 7 6 5
(Invalid in DTS) 0 0 0
No.4 PRO LOGIC
The submenu is switched between PRO LOGIC (AUTO BALANCE OFF) and EFFECT OFF.
1. CENTER LARGE
The input is automatically discriminated by signal detection and switched with priorities Coaxial>Optical>Analog.
DTS Digital Surround is disabled. The input signals are PRO LOGIC decoded and output.
(Remote control code 7A-8A: "3" key [DSP mode])
CODEC.ADC
ANALOG IN
CS4227
DIR2
DIGITAL IN
YM3436
4 P R O E F C T : O F F
2. EFFECT OFF
The input is only for analog signal. The L/R signals bypass the digital circuit and are output to the MAIN L/R.
bit 7
3 S T : 0 0 0 1 0 0 0 0
AC3D2av(YSS918)
DECODER
DOLBY DIGITAL
or

PRO LOGIC

or
DTS
4 3 2 1 0
1 0 0 0 0
IEC958 digital data bit
IEC958 commercial-use device bit
IEC958 digital format error
Demodulator muting (without RF signal)
1 for audio other than PCM linear audio
1 during red DTS lock
1 during DTS decode OK
1 during AC-3 decode OK
4 P R O C N T R : L R G
AC3D2av(YSS918)
DECODER
DOLBY DIGITAL
or
PRO LOGIC
or
DTS
RX-V496/RX-V496RDS/HTR-5240/HTR-5240RDS
bit 1
DSP
L/R
L/R
CODEC.DAC
C/LFE C/LFE
LS/RS LS/RS
1M SRAM
DSP
L/R
L/R
CODEC.DAC
C C
S S
• INPUT : DVD/LD (Analog signal)
(Lch and Rch, or Lch only, 1KHz, –20dBV)
• OUTPUT : SPEAKERS
1M SRAM
(INPUT : Lch and Rch )
MAIN L : –12.5 dBV
MAIN R : –12.5 dBV
CENTER: 27.0 dBV
REAR L : –9.0 dBV
REAR R : –9.0 dBV
MAIN L
MAIN R
CENTER
SUBWOOFER
REAR L
CS4227
REAR R
MAIN L
MAIN R
CENTER
REAR L
CS4227
REAR R
(INPUT : Lch only)
MAIN L : 24.0 dBV
MAIN R : –19.0 dBV
CENTER : –10.0 dBV
REAR L : –9.0 dBV
REAR R : –9.0 dBV
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