Ic Block Diagram - Yamaha HTR-5450 Service Manual

A B
RX-V520/RX-V520RDS/HTR-5450/HTR-5450RDS/DSP-AX520
1
I IC BLOCK DIAGRAM
IC301, 302, 351: LA7956
Video Switch
6dB
AMP
4 INPUT 1 OUTPUT
DRIVER CONTROL
VIDEO SWITCH
2
1 2 3 4 5 6 7 8 9
VIDEO A B VIN1 GND VIN2 VCC VIN3 VIN4
OUT
IC371, 373: NJM7812FA
IC374: NJM7805FA
Voltage Regulator
INPUT
3
OUTPUT
COMMON
IC372: NJM79M12FA
Voltage Regulator
4
COMMON
OUTPUT
INPUT
IC441: LC78211
5
Analog Function Switch
1 30
L1 R1
2 29
L2 R2
L3 3 28
R3
L4 4 27 R4
5 26
LCOM1 RCOM1
6 25
L5 R5
L6 7 24 R6
8 23
LCOM2 RCOM2
6
9 22
L7 R7
L8 10 21
R8
11 20
LCOM3 RCOM3
19
V DD LEVEL SHIFTER
V 16
SS
14
D1
ZZ
LATCH
12
V
EE
15
ZZ CL
18
RES
SHIFT REGISTER
17 13
S ZZ CE
7
E-53/J-49
C D
IC442: LC78213 IC446, 447: M5220L
Analog Function Switch Dual OP-Amp.
1 30
L1 R1
2 29
L2 R2
LCOM1 3 28 RCOM1
4 27
L3 R3
5 26
L4 R4
1 2
LCOM2 6 25 RCOM2
7 24
L5 R5
8 23
L6 R6
IC731~733: µPC4570C
LCOM3 9 22 RCOM3
Dual OP-Amp
10 21
L7 R7
LCOM4 11 20 RCOM4
V 19 LEVEL SHIFTER
DD
OUT 1
1
V 16
SS
14
ZZ D1
LATCH
V 12
EE
I 11 2
15
ZZ CL
18
RES
SHIFT REGISTER
17 13
S ZZ CE IN 3
1
V– 4
IC443: LC78212
Analog Function Switch
1 30
L1 R1
IC734: LB1641
Motor Driver
L2 2 29 R2
3 28
L3 R3
LCOM1 4 27 RCOM1
L4 5 26 R4
6 25
L5 R5
L6 7 24 R6
LCOM2 8 23 RCOM2
L7 9 22 R7
10 21
L8 R8
LCOM3 11 20 RCOM3
19
V DD LEVEL SHIFTER
16
V SS
14
D1
ZZ
LATCH
12
V EE
IN 1
5
15
ZZ CL
18
RES
SHIFT REGISTER
GND
1
17 13
S ZZ CE
IC771, 772: NJM2068L-D
IC444: µPC4570HA
Dual OP-Amp
Dual OP-Amp
1 2
- + + -
1
1 2 3 4 5 6 7 8 9
Vcc Vo -Vm +Vm V +Vm -Vm Vo Vcc
1 1 1 EE 2 2 2
IC445: LC72722
RDS Decoder
1 5 6
VDDA 3 CLOCK
+ PLL
RECOVERY
(57kHz)
REFERENCE
(1187.5Hz)
VOLTAGE
VSSA 4
VREF
57kHz
DATA
ANTIALIASING SMOOTHING
MPX IN 2
bpf
FILTER DECODER
FILTER
(SCF)
DO 20
CL 21
RAM ERROR CORRECTION SYNC/EC
DI CCB (24 BLOCK DATA) (SOFT DECISION) CONTROLLER
22
CE 23
CLK(4.332MHz)
T1
7 MEMORY
CONTROL
T2 8
TEST SYNC SYNC
T3 DETECT-1 DETECT-2
9 OSC/DIVIDER
T4 10
11 16 17 13 12
E F
IC802: MSM514260C-60JS
4Mbit DRAM
Timing
RAS 14
Generator
LCAS 29
UCAS 28
3 4 5 6 7 8
Column
9 Address
Buffers
Internal
Refresh
A0~A8
Addess
Control Clock
Counter
Row
Row
9 Address 9
Deco-
Buffers
8 V+ ders
7 OUT 2
+ – + –
VCC
20
6 I
12
On Chip
VBB Generater
5 IN
2
VSS
21
IC803: PQ025EZ5MZP
Regulator
Vin Vo
1 3
3 2 8 10 9 7
Vc
2
5
GND
4 VZ
INPUT LOGIC IN 2
6
IC805: TC74HC00AF
IC808: TC74HCU04AF
Quad 2-Input Nand Gate
1A 1
1B 2
1Y 3
2A 4
2B 5
2 3 4 5 6 7 8
2Y 6
GND 7
IC807: NJM2904M
Dual OP-Amp
14 VDDD
15 VSSD
RDS-ID Q2 Q3
19
– Q1 Q4
18 SYNC
INPUTS
24 SYR
+
Q8 Q9
E-54/J-50
G H
WE OE
13 27
I/O
Controller
Output
8 8
I/O Buffers
Controller
DQ1~DQ8
LOUT1
Input
9 Column Decoders
8
8
Buffers ROUT1
I/O
Sense Amplifiers
16 16 LOUT2
Selector
ROUT2
Input
8
8
Buffers
Word Memory LOUT3
DQ9~DQ16
Drivers Cells
Output
8
8 ROUT3
Buffers
IC804: µPC29M33T-E1
Voltage Regulator
1 INPUT
Safety Drive
Limiter
Amp.
3 OUTPUT
Excessive Electric
Current Protection
2 GND
IC806: TC74VHCT08AF
Quad 2-Input And Gate
1A 1 14 Vcc
14 Vcc
1B 2 13 4B
13 4B
1Y 3 12 4A
12 4A
2A 4 11 4Y
11 4Y
2B 5 10 3B
10 3B
2Y 6 9 3A
9 3A
GND 7 8 3Y
8 3Y
V–
IC903: NJM78L05A-T3
Voltage Regulator
Q6
Q5
Q7
OUTPUT
Q13
Q11
Q12
Q10
I J
IC812: AK4527VQ
24bit CODEC
Audio
LIN+ 30
I/F
ADC HPF
LIN- 29
RIN+
32
ADC HPF
RIN- 31
LPF DAC DATT MCLK
39 MCLK
27
LRCK LRCK
6
BICK
4 BICK
LPF DAC DATT
28
10 DAUX
LPF DAC DATT
25
Format
Converter
26 LPF DAC DATT
6DOUT
SDOS
1
LPF DAC DATT
23
9 SDTO
SDIN1 6 SDTI1
24 LPF DAC DATT
SDIN2
7 SDTI2
SDIN3
8 SDTI3
IC813~817 : M5220FP
OUT 1 1 8 +V CC
–IN 2 7 OUT
1 2
+ – + –
+IN 3 6 –IN
1 2
–V 4 5 +IN
CC 2
IC901: LC75725E
LCD Driver
DIGIT SEGMENT DRIVER
DRIVER
MPX
BLK 61
VFL 13
LATCH
DIMMER
GRID
TIMING
CONTROL
GENERATOR
SHIFT REGISTER
TIMING
GENERATOR
ADDRESS
DIVIDER
DETECTOR
OSCI 59
CLOCK
GENERATOR
OSCO 58
INPUT
OUTPUT
GND