Yamaha RX-V459 Service Manual page 71

A B C
DSP 3/3
1
Page 72 D2
to FUNCTION (1)_CB202
2
3 8.8
8.8
1.7
1.3
0
3.3
1.7
4
3.3
3.3
0
0
0
2ch DAC
FRONT L
5.0
3.3
3.1
5
1.7
1.7
C/SW
1.7
1.7
SL/SR
5.0
0
1.7
1.7
0.5
0
8ch DAC
0 0
DIGITAL IN
0 0
6
3.3 3.3
0.1 0
0.1 1.7
1.7 1.7
0 1.7
SBL/SBR
0 1.7
1.7
0 1.7
FL/FR
SELECTOR
7
8
9
10
D E F
Page 74 J7
to MAIN (2)_W1004
DSP
5.1
5.1
0
ANALOG IN
1.7
0
11.8
0
3.3 0
0
0 0
5.0
2.5
2.5
2.5
2.5 0 0
0
-11.9
11.8
0
0 0
2.5
2.5
2.6
0 0
0
0
5.1
-11.9
2.5
2.5
2.5
2.5
0
5.1
2.5
11.8
0
0 0
0 0
0
-11.9
11.8
0
0
0
0 0
0
-11.9
11.8
0
0 0
0
0
0
-11.9
G H
FRONT L
CENTER
SUB
WOOFER
SURROUND L
SURROUND
BACK L
IC51 : NJM78M05DL1A
Voltage regulator
INPUT
OUTPUT
COMMON
I J K
LC89057W-VF4A-E
LC89057W-VF4AD-E
IC67 : SN74LV157APWR
DATA1 (1, 2)
Quadruple 2-line to 1-line data selectors/multiplexers
DATA2 (3, 4)
DATA3 (5, 6)
DATA4 (7, 8)
1A 2
4 1Y
1B 3
A/B 1 16 V
2A 5 CC
1A G
2 15
7 2Y
2B 1B 3 14 4A
6
1Y 4B
4 13
3A 11 2A 5 12 4Y
2B 6 11 3A
9 3Y
3B
10 2Y 7 10 3B
GND 8 9 3Y
4A
14
12 4Y
4B 13
G 15
A/B 1
# All voltages are measured with a 10MΩ/V DC electronic volt meter.
# Components having special characteristics are marked s and must be replaced
with parts having specifications equal to those originally installed.
# Schematic diagram is subject to change without notice.
L M N
RX-V459/HTR-5940/HTR-5935/DSP-AX459
IC71-74, 75, 76 : NJM4565M
Dual operational amplifier
V+
8
2, 6
–INPUT OUTPUT
1, 7
+INPUT
3, 5
V–
4
IC70 : PCM1803DBR
Stereo A/D converter
Delta-Sigma BCK
V L
IN
Modulator LRCK
DOUT
Serial
x1/64, x1/128
Interface
V 1
REF Decimation
Reference Filter
V 2 With Mode/
REF
High-Pass Filter Format FMT0
Control FMT1
Delta-Sigma MODE0
V R
IN
Modulator MODE1
BYPAS
TEST
OSR
Power Supply Clock and Timing Control PDWN
SCKI
V AGND DGND V
CC DD
IC69 : PCM1781DBQR
Audio digital-to-analog converter
BCK
Audio
LRCK
Serial Output Amp V L
OUT
DATA Port
DAC and
Low-Pass Filter
4 /8
Oversampling
Enhanced
Digital
Multilevel
(FMT) Filter V
COM
Delta-Sigma
With
Modulator
Function
MS (DEMP0)
Serial Control
Control
MC (DEMP1)
Port Output Amp
DAC and
MD (MUTE)
Low-Pass Filter V R
OUT
(TEST)
System Clock
System
SCK
Clock Zero Detect Power Supply
Manager
(1) Open-drainoutputforthePCM1782
NOTE: Signal names in parentheses ( ) areforthe PCM1781.
IC68 : PCM1680DBQR
Audio digital-to-analog converter
Outp ut A mp and V 1
OUT
DAC
Low-P ass Filter
BCK
LRCK
Outp ut A mp and V 2
OUT
DAC
Low-P ass Filter
Serial
Input
I/F
Outp ut A mp and V 3
OUT
DAC
Low-P ass Filter
8 Outp ut A mp and V
COM
DAC
Oversampling Enhanced Low-P ass Filter
V 4
Digital Filter OUT
Multilevel
With DeltaœSigma
Outp ut A mp and
Function Modulator
DAC
Controller Low-P ass Filter V 5
OUT
MS/ADR
Outp ut A mp and
MC/SCL DAC
Low-P ass Filter
V 6
OUT
MD/SDA
Function
Control
Outp ut A mp and
I/F DAC
Low-P ass Filter V 7
OUT
MSEL Outp ut A mp and
DAC
Low-P ass Filter V 8
OUT
System Clock
Syst em Clock
SCK Zero Detect Power Supply
Manager
71