2
A
B
C
D
E
F
G
H
I
J
1
3
4
5
7
RX-V420/RX-V420RDS/HTR-5440/HTR-5440RDS/DSP-AX420
6
■
IC BLOCK DIAGRAM
IC351: LA7956
Video Switch
1
2
3
4
5
6
7
8
9
VIDEO
OUT
A
B
VIN1
GND
VIN2
VCC
VIN3
VIN4
DRIVER
6dB
AMP
CONTROL
4 INPUT 1 OUTPUT
VIDEO SWITCH
IC371, 373: NJM7812FA
IC374: NJM7805FA
Voltage Regulator
INPUT
OUTPUT
COMMON
IC372: NJM79M12FA
Voltage Regulator
COMMON
OUTPUT
INPUT
IC441: LC78211
Analog Function Switch
1
2
3
4
5
6
7
8
9
10
11
30
29
28
27
26
25
24
23
22
21
20
19
16
12
18
17
14
15
13
LEVEL SHIFTER
LATCH
CONTR
OL
SHIFT REGISTER
ZZ
ZZ
ZZ
L1
L2
L3
L4
LCOM1
L5
L6
L7
L8
RES
S
V
DD
V
SS
V
EE
LCOM2
LCOM3
R1
R2
R3
R4
RCOM1
RCOM2
RCOM3
R5
R7
R8
D1
CL
CE
R6
IC442: LC78213
Analog Function Switch
1
2
3
4
5
6
7
8
9
10
11
30
29
28
27
26
25
24
23
22
21
20
19
16
12
18
17
14
15
13
LEVEL SHIFTER
LATCH
CONTR
OL
SHIFT REGISTER
ZZ
ZZ
ZZ
L1
L2
LCOM1
L3
L4
LCOM2
L5
LCOM3
L7
RES
S
V
DD
V
SS
V
EE
L6
LCOM4
R1
R2
RCOM1
R3
R4
R6
RCOM4
RCOM2
RCOM3
R7
D1
CL
CE
R5
IC443: LC78212
Analog Function Switch
1
2
3
4
5
6
7
8
30
29
28
27
26
25
24
23
L1
L2
L3
LCOM1
L4
L5
L6
LCOM2
R1
R2
R3
RCOM1
R4
RCOM2
R5
R6
9
10
11
22
21
20
19
16
12
18
17
14
15
13
LEVEL SHIFTER
LATCH
CONTR
OL
SHIFT REGISTER
ZZ
ZZ
ZZ
L7
L8
RES
S
V
DD
V
SS
V
EE
LCOM3
RCOM3
R7
R8
D1
CL
CE
IC444:
µ
PC4570HA
Dual OP-Amp
Vcc
Vo
1
-Vm
1
+Vm
1
V
EE
+Vm
2
-Vm
2
Vo
2
Vcc
1
2
3
4
5
6
7
8
9
+
+
-
-
1
2
IC445: LC72722
RDS Decoder
+
REFERENCE
VOLTAGE
57kHz
bpf
(SCF)
CCB
TEST
PLL
(57kHz)
ANTIALIASING
FILTER
SMOOTHING
FILTER
RAM
(24 BLOCK DATA)
ERROR CORRECTION
(SOFT DECISION)
SYNC/EC
CONTROLLER
SYNC
DETECT-1
DATA
DECODER
CLOCK
RECOVERY
(1187.5Hz)
MEMORY
CONTROL
OSC/DIVIDER
VREF
CLK(4.332MHz)
SYNC
DETECT-2
VDDA
VSSD
VDDD
RDS-ID
SYNC
SYR
VSSA
MPX IN
DO
CL
DI
CE
T1
T2
T3
T4
T5
T6
T7
X IN
VREF
FL OUT
C IN
X OUT
3
14
15
19
18
24
1
5
6
4
2
20
21
22
23
7
8
9
10
11 16 17
13
12
8
7
6
5
4
3
2
1
OUT1
–
Vcc
+IN2
–
IN2
OUT2
+Vcc
–
IN1
+IN1
IC446, 447: M5220L
Dual OP-Amp.
IC731~733:
µ
PC4570C
Dual OP-Amp
–
+
OUT
1
I
11
V–
V+
OUT
2
1
2
3
4
5
IN
1
I
12
IN
2
–
+
6
7
8
IC734: LB1641
Motor Driver
2
3
P1
5
IN 1
1
GND
4
VZ
6
IN 2
OUT
1
8
VCC 2
10
OUT
2
9
P2
INPUT LOGIC
PRE DRIVER
7
VCC 1
8
7
6
5
4
3
2
1
OUT1
–
Vcc
+IN2
–
IN2
OUT2
+Vcc
–
IN1
+IN1
IC771, 772: NJM2068L-D
Dual OP-Amp
IC901: LC75725E
LCD Driver
DIGIT
DRIVER
GRID
CONTROL
TIMING
GENERATOR
SEGMENT DRIVER
DIVIDER
MPX
LATCH
BLK
61
VFL
13
OSCI
59
OSCO
58
G1
G2
G10
G11
12
11
3
2
S1
S2
S42
S43
14
15
55
56
DIMMER
TIMING
GENERATOR
CLOCK
GENERATOR
ADDRESS
DETECTOR
SHIFT REGISTER
DI
64
CL
63
CE
62
VSS
57
VDD
60
IC903: NJM78L05A-T3
Voltage Regulator
INPUT
OUTPUT
GND
IC802: MSM514260C-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
Addess
Counter
Row
Address
Buffers
On Chip
VBB Generater
Row
Deco-
ders
Word
Drivers
9
9
16
16
8
8
8
8
8
8
DQ1~DQ8
8
8
IC803: PQ025EZ5MZP
Regulator
1
Vin
3
Vo
2
Vc
5
GND
IC804:
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.
4B
13
4A
12
4Y
11
3B
10
3A
9
3Y
8
1B
2
1Y
3
2A
4
2B
5
2Y
6
GND
7
IC805: TC74HC00AF
IC808: TC74HCU04AF
Quad 2-Input Nand Gate
Vcc
14
1A
1
IC806: TC74VHCT08AF
Quad 2-Input And Gate
Vcc
14
4B
13
4A
12
4Y
11
3B
10
3A
9
3Y
8
1A
1
1B
2
1Y
3
2A
4
2B
5
2Y
6
GND
7
IC812: AK4527VQ
24bit CODEC
Format
Converter
ADC
LIN+
39
MCLK
6
LRCK
4
BICK
10
DAUX
1
SDOS
9
SDTO
6
SDTI1
7
SDTI2
8
SDTI3
HPF
Audio
I/F
LIN-
ADC
HPF
DAC
LOUT1
DATT
LPF
MCLK
LRCK
BICK
6DOUT
SDIN1
SDIN2
SDIN3
DAC
ROUT1
DATT
LPF
DAC
LOUT2
DATT
LPF
DAC
ROUT2
DATT
LPF
DAC
LOUT3
DATT
LPF
DAC
ROUT3
DATT
LPF
30
29
RIN+
RIN-
32
31
27
28
25
26
23
24
IC813~817 : M5220FP
–
+
OUT
1
–IN
1
–V
CC
+V
CC
OUT
2
1
2
3
4
5
+IN
1
–IN
2
+IN
2
–
+
6
7
8
E-53/J-49
E-54/J-50