Yamaha DSP-A595a Service Manual page 13

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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.
ANALOG IN
DIGITAL IN
: This shows that the device is not operating.
AC-3 Status Info. : bit 7 6 5
(Invalid in DTS)
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L 13942296513
No.4 PRO LOGIC
The input is automatically discriminated by PCM Audio>analog. DTS Digital Surround is disabled.
The submenu is switched between PRO LOGIC (AUTO BALANCE OFF) and EFFECT OFF.
1. CENTER LARGE
The input is automatically detected whether it is PCM Audio or analog. With analog, PCM Audio or AC-3 (DOLBY DI-
GITAL) 2/0 input, the L, R, C and S signals are PRO LOGIC decoded and output. With AC-3 (DOLBY DIGITAL) other
than 2/0, PRO LOGIC does not operate, and AC-3 (DOLBY DIGITAL) playback is executed. (Remote control code
7A-8A: "3" key [DSP mode])
ANALOG IN
DIGITAL IN
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.
2. EFFECT OFF
MAIN L/R are bypassed and output.
http://www.xiaoyu163.com
3 DVD/LD
CODEC.AD
AK4526A
DIR2
YM3436
4 3 2 1 0
1 0 0 0 0 0 0 0
4 DVD/LD P. LGC C:L
CODEC.AD
AK4526A
DIR2
YM3436
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4 DVD/LD EFFECT OFF
http://www.xiaoyu163.com
2 9
8
bit 0 bit 7
3T00000001
AC3D2av(YSS918)
L/R
DECODER DSP
DOLBY DIGITAL
or
C/LFE
PRO LOGIC
or
DTS
LS/RS
1M SRAM
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
Q Q
3 6 7 1 3 1 5
1 during red DTS lock
1 during DTS decode OK
1 during AC-3 decode OK
AC3D2av(YSS918)
L/R
DECODER DSP
DOLBY DIGITAL
or
C
PRO LOGIC
or
DTS
S
• INPUT : DVD/LD (Analog signal)
co • OUTPUT : SPEAKERS
1M SRAM
.
9 4 2 8
MAIN L
DA
AK4320
MAIN R
CODEC.DA
C/LFE CENTER
SUBWOOFER
LS/RS REAR L
AK4526A
REAR R
0 5 8 2 9 9 4 2 8
MAIN L
DA
AK4320
MAIN R
CODEC.DA
CENTER
C
REAR L
S
AK4526A
REAR R
m
(Lch and Rch, or Lch only, 1KHz, –20dBV)
(INPUT : Lch and Rch ) (INPUT : Lch only)
MAIN L : –15.4 dBV REAR L : 23.8 dBV
MAIN R : –14.2 dBV REAR R : –25.0 dBV
CENTER: 26.6 dBV CENTER : –12.5 dBV
REAR L : –6.0 dBV REAR L : –6.0 dBV
REAR R : –6.5 dBV REAR R : –6.2 dBV
DSP-A595a
9 9
9 9
12