Yamaha RX-V450, Service Manual

Page: 75 / 125

A
1
2
3
4
5
6
7
8
9
10
B C D E F G H I J K L M N
75
RX-V550/HTR-5750/RX-V450/HTR-5740/DSP-AX450
SCHEMATIC DIAGRAM (DSP)
Point: Pin 28 of IC2
★
All voltages are measured with a 10M
Ω
/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.
★ 電圧は、内部抵抗10MΩの電圧計で測定したものです。
★
s 印のある部品は、安全性確保部品を示しています。部品の交換が必要な場合、パーツリス
トに記載されている部品を使用してください。
★ 本回路図は標準回路図です。改良のため予告なく変更することがございます。
IC1 : MM74HCU04SJX
Hex Inverters
A1
Y1
Y2
VCC
A6
1
2
3
4 11
A2 Y6
A5
12
13
14
A3
Y3
Y5
A4
5
6
7 Y4 8
9
10
GND
Input
Selector
RXOUT
RX0
RX1
RX2
RX3
RX4
RX5/VI
RX6/UI
LPF
TMCK/PIO0
TBCK/PIO1
TLRCK/PIO2
TDATA/PIO3
TXO/PIOEN
Cbit, Ubit
Microcontroller
I/F
Data
Selector
Clock
Selector
Modulation
&
Parallel Port
PLL
XIN XOUT XMCK CKST
SLRCK
SBCK
RLRCK
RBCK
RMCK
SDIN
RDATA
RERR
DO
XMODE CI CE CL INT AUDIO/VO EMPHA/UO
1/N
Demodulation
&
Lock detect
1
2
3
4
5
8
9
10
13
44
45
46
47
48
29 28 27 34
23
22
20
17
16
24
21
36
37
41 38 39 48 35 33 32
IC2: LC89057W-VF4D-E
Digital Audio Interface Transceiver
4B 13
4A 12
4Y 11
3B 10
3A 9
3Y 8
1B 2
1Y 3
2A 4
2B 5
2Y 6
GND 7
IC3: TC74HCT00AF
Quad 2-Input Nand Gate
Vcc 14 1A 1
IC4: NJM2904M
Dual OP-Amp
Q1
Q2 Q3
Q9 Q8
Q4
INPUTS
OUTPUT
V–
–
+
Q6
Q5
Q10
Q11
Q12
Q7
Q13
R
O
W DECODER
SENSE AMPS
COLUMN
DECODER
POWER
DOWN
INPUT BUFFER
IC6: CY62128BLL-70SCT
Memory
A0
A
9
A
10
A
11
A
12
A
13
A
14
A
15
A
16
A1
A2
A3
I/O0
I/O1
I/O2
I/O3
I/O4
I/O5
I/O6
I/O7
A4
A5
A6
A7
A8
CE1
CE2
WE
OE
512 x 256 x 8
ARRAY
IC8: MSM514260E-60JS
4Mbit DRAM
Timing
Generator
I/O
Controller
Output
Buffers
Input
Buffers
Input
Buffers
Output
Buffers
I/O
Controller
Column Decoders
RAS
Refresh
Control Clock
14
WE
13
9
9
LCAS 29
UCAS
A0~A8
28
VCC 20
VSS 21
Sense Amplifiers
I/O
Selector
Memory
Cells
OE
27
DQ9~DQ16
Column
Address
Buffers
Internal
Address
Counter
Row
Address
Buffers
On Chip
VBB Generator
Row
Deco-
ders
Word
Drivers
9
9
16 16
8
8
8
8
8
8
DQ1~DQ8
8
8
1 DIR
A1
A2
A3
A4
A5
A6
A7
A8
GND
Vcc
OE
B1
B2
B3
B4
B5
B6
B7
B8
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
IC10: SN74LV245APWR
Octal Bus Transceiver with 3-state Outputs
IC11: µ PC29M33T-E1
Voltage Regulator
3 OUTPUT
1 INPUT
2
GND
Safety Drive
Limiter
Excessive Electric
Current Protection
Sudden Current
Protection
Starter Circuit Driver
Standard Voltage
Overheat Protection
Amp.
IC12: PQ025EZ5MZP
Regulator
1 Vin 3 Vo
2 Vc
5
GND
IC14: 74VHC157MTCX
Quad 2-Input Multiplexer
1 S
10 I1d
15 E
11 I0d
9 Zd
13 I1c
14
I0c
12 Zc
6
I1b
5 I0b
7 Zb
3 I1a
2 I0a
4 Za
1
2
3
4
5
6
7
8
9
10
11
SDOS
I2C
SMUTE
BICK
LRCK
SDTI1
SDTI2
SDTI3
SDTO
DAUX
DFS0
33
32
31
30
29
28
27
26
25
24
23
DZF2/OVF
RIN
LIN
NC
MASTER
ROUT1
LOUT1
ROUT2
LOUT2
ROUT3
LOUT3
44 43 42 41 40 39 38 37 36 35 34
TDM0 LOOP0/SD
A/CDTI
DIF1/SCL/CCLK DIF0/CSN P/S MCLK DZF1 A
VSS
A
VDD
VREFH VCOM
12 13 14 15 16 17 18 19 20 21 22
SDTI4
DZFE
TVDD D
VDD
D
VSS PDN
TST1
CAD1 CAD0
LOUT4 R
OUT4
MCLK
LRCK
BICK
Format
Converter
SDOS
SDOUT
SDIN1
SDIN2
SDIN3
SDIN4
ADC HPF
Audio
I/F
ADC HPF
DAC DATT LPF
DAC DATT LPF
DAC DATT LPF
DAC DATT LPF
DAC DATT LPF
DAC DATT LPF
DAC DATT LPF
DAC DATT LPF
AK4628
IC16: AK4628VQ
192kHz 24Bit 8-channel CODEC
22 ROUT4
12
1
SDTI4
8 SDTI3
7 SDTI2
6 SDTI1
9 SDTO
10 DAUX
4 BICK
5
LRCK
39 MCLK
32 RIN
31 LIN
21 LOUT4
24 ROUT3
23 LOUT3
26 ROUT2
25 LOUT2
28 ROUT1
27 LOUT1
IC18: µ PC4570G2
IC19~21: NJM2068MD
Dual OP-Amp
– +
OUT 1
–IN
1
–V
CC
+V CC
OUT
2
1
2
3
4 5
+IN
1
–IN
2
+IN
2
– +
6
7
8
4B 13
4A 12
4Y 11
3B 10
3A 9
3Y 8
1B 2
1Y 3
2A 4
2B 5
2Y 6
GND 7
IC22: SN74AHCT08PWR
Quad 2-Input And Gate
Vcc 14 1A 1
IC13: PQ012FZ01ZP
Voltage Regulator
1 Vin
VB
3 Vo
4 2 Vc
5
GND
Specific IC
SDI INTERFACE
/CS
SO
SI
SCK
SDI7 SDI6 SDI5 SDI4 SDI3 SDI2 SDI1 SDI0 SDWCK SDBCK
IOPORT19-0
VSS
XO
XI
IOPORT0
IOPORT1
IOPORT2
IOPORT3
IOPORT4
IOPORT5
IOPORT6
IOPORT7
AVSS
CPO
AVDD
VDD1
(NC)
IOPORT8
IOPORT9
IOPORT10
IOPORT11
IOPORT12
IOPORT13
IOPORT14
IOPORT15
VDD2
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51 VDD2
RAMA10
RAMA9
RAMA3
RAMA4
RAMA2
RAMA5
VDD1
RAMA1
RAMA6
RAMA0
RAMA7
RAMA8
RASN
RAMOEN
RAMWEN
CASN
RAMD15
RAMD11
RAMD13
VDD1
RAMD12
RAMD11
RAMD10
VSS 1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
VSS
SDO0 SDO1 SDO2 SDO3 SDO4 SDO5 SDO6 SDO7
IOPORT16 IOPORT17 IOPORT18 IOPORT19
VDD1
RAMD0 RAMD1 RAMD2 RAMD3 RAMD4 RAMD5 RAMD6 RAMD7 RAMD8 RAMD9
VDD2
100
99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76
VDD2 SDI0 SDI1 SDI2 SDI3 SDI4 SDI5 SDI6 SDI7 SDBCK SDWCK /IC SCK SI SO /CS VDD1 RAMA17 RAMA16 RAMA15 RAMA14 RAMA13 RAMA12 RAMA11 VSS
26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
XO
XI
CPO
RAMD15-0
CASN
RASN
RAMWEN
RAMOEN
RAMA17-0
CONTROL REGISTER
µ -COM INTERFACE
CONTROL SIGNAL
DSP Internal Clock CK
(30.72 ~ 40.96 MHz)
PLL
EXTERNAL MEMORY
INTERFACE
SDO INTERFACE
DATA RAM
32 bit x 1024 word
PROGRAM RAM 50 bit x 1024 word
COEFFICIENT RAM 16 bit x 1024 word
ADDRESS RAM
17 bit x 256 word
SDO7 SDO6 SDO5 SDO4 SDO3 SDO2 SDO1 SDO0
32 bit DSP CORE
OVF
END
MPLOAD
ZEROF7R-0L
BCKOP
WCKOP
SDBCKO
SDWCKO
IC7: YSS930-SZ
Programmable 32 bit DSP
RX-V550/HTR-5750
Reference No. U, C, R, T, K, A, B, G, L, E memo
s1 R57 4.7K AAC
s2 MOUNT Digital Out MD/CDR In
s3 MOUNT COAX
RX-V450/HTR-5740/DSP-AX450
Reference No. J U, C, R, T, K, A, B, G, L, E memo
s1 R57 NOT USED 4.7K AAC
s2 MOUNT NO MOUNT Digital Out MD/CDR In
s3 NO MOUNT MOUNT COAX
FRONT L
CENTER
SURROUND L
4.9
4.9
0
3.9
0
4.9
3.9
0
4.9
0.2
0
4.9
4.9
4.9
4.9
0
0
0.3
0.1
0.4
0.1
3.1
2.6
4.8
4.9
4.9
3.3
3.3
0.1 0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
3.3
3.3
1.2 0.1 0.1 0.1 0.1
0.1 0.1 0.1 0.1 0.1 0.1
0.1
0.1
0.1
0.1
0.1
3.3
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.3
1.7
1.7
3.4
0.7
0.7
3.4
0
0
0
0
0
0
0
0
0
0.1
0.1 0.1 0.1 0.1 0.1 0.1 0.1 1.2
1.2 1.2 1.2 1.2
0.1 3.4 3.4
1.2 0 0 0 0 0 0 0 0
0.1
3.3
1.2
1.2
3.4
1.2
1.2
1.2
1.2
3.3
3.3
3.3
3.3
3.3
3.4
3.4
3.4
3.4
0
0
0
0
0
0
0
0
0
0 0
0 0 0 0 0 0
0 0 0 0
0 0 0
1.2 1.2
1.2 1.2 1.2 1.2
0.8
1.6
1.7 1.7
1.7
1.8
1.2
3.4
3.4
0
0
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0
0.1
4.9
4.9
4.9
4.9
3.6
3.6
3.6
4.9
2.6 0
0 0
0
0
0
0
0
0
0
0
0
0
3.4 1.8 1.7
0
3.4
1.7
0
1.7
1.7
0
0
0
0
3.4
0.4
3.9
3.9
0.1
0.2
3.4
3.3
3.4
1.5
1.6
1.6
3.4
0
0
0
3.4
4.8 3.3 1.5 3.3 0
0
0
0
0
0
0
3.0
2.5 4.9
1.2
0
0
0
3.4
3.4
4.9
4.9 3.4
0
0
3.4
3.0
1.2 4.2
2.5 4.7
4.9
1.2 2.5
0
3.6
3.3
4.8 1.6 4.8 4.8 4.8 4.7 4.7 4.7
5.0
4.9 4.9 0 0
0
0
0 0 3.3 3.3 3.3 3.3 3.3 3.3 3.3
3.3 3.3
3.3
0 0 0 0
3.3
3.3
4.8 4.8 4.8
0 0 0 0.7
0.7 0.7 0.7 0.7 1.0 1.0 1.0 1.0 1.8 1.7 1.7 1.7
0.7 0.7 0.7 0.7 0.7 0.7 0.7 1.7 1.7 1.7 ~ ~
~
~
~
2.2 2.2
0
0
1.0 1.7 2.5 3.4
3.4 3.3 0.1 2.5
0
0
1.9
1.5
1.7
1.7
0.7
0.7
3.4
0.7
0.7
1.0
1.0
1.0
1.0
0.7
0.7
2.5
0.8
1.5
2.5 1.8 1.7 1.7 3.4 3.4 2.2 1.7 1.7 1.7
0.7 0.7 0.7 0.7
0.7 0.7
1.7
0
3.4
4.8
0
3.3
3.3
4.8
1.7
0.8
0
0
0.7
0.7
1.2
1.3
2.5
0
1.7
~ ~ ~ ~ ~
3.4 3.4
1.7
1.7
1.7
1.7
1.7
1.7
0
1.5
0
0
0
0
0
0
1.5
4.9 4.9 4.9
0 0 0 0
2.5
2.5
3.3
3.3 3.3 4.8 0 0 5.0 1.7
5.0
-0.1
-0.1
-0.1
-0.1
-0.1 -0.1
-0.1
-0.1
-0.1
-0.1
-0.1
-0.1
-0.1
-0.1
-0.1
-11.6
-11.6
-11.6
-11.6
11.8
11.8
11.8
2.5
5.0 5.0
2.5
0
0
0
0
0 0
0
2.5
2.5
-0.1
-0.1
11.8
0
0
1.7
0
0
0
0.1
2.5
2.5
2.5
2.5
2.5
2.5
0
2.5
1.7
1.7
1.5
0.8
1.5
1.9
SELECTOR
A/D
POST
PROCESSOR
MAIN
DECODER
1M SRAM
DIR
DUTY
CORRECTOR
4M DRAM
DUTY
CORRECTOR
HTR-5750, RX-V450, HTR-5740, DSP-AX450: Page 79
to FUNCTION (2)
M10
RX-V550: Page 77 L10
HTR-5750, RX-V450, HTR-5740, DSP-AX450: Page 78
to FUNCTION (1)
H2
RX-V550: Page 76 H2