Sony STR-DE345 - Manual (Page 8)

8 8
3-2. IC BLOCK DIAGRAMS
IC281 NJM2279 (VIDEO BOARD)
VIN3
V-
14
SW2
13
VIN1
12
MUTE1
11
VOUT1
10
NC
9
V+
8
1
SW1
2
AMP
VIN2
3
MUTE2
4
VOUT2
5
GND2
6
GND1
7
AMP
IC701, IC702 uPC2581V (MAIN BOARD)
PROTECTOR
DRIVE
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
PRE
DRIVE
PRE
DRIVE
BIAS CIRCUIT
REG
MUTE
+VOUT1 –VOUT1 COMP1
NF1 IN1 GND IN2 NF2
COMP2 –VOUT2 +VOUT2
VCC1 VCC2 VEE
DRIVE
IC501 STK350-230 (MAIN BOARD)
1
2
3
4
5
6
7
8
9
TR3 R1
R2 TR4
TR6
TR7
R4
R9
TR5
TR1
TR2
R6
D4 D3
R7 R8
TR8
D1 D2 R5
R3
INPUT
NF
-VEOUT
+VEOUT
V SS
GND
V CC
SUB
IC1 BU1924 (MAIN BAORD)
1 2 3 4 5 6 7 8
9 10 11 12 13 14 15 16
QUAL R D ATA VREF VDD1 VSS1 MUX VSS3 CMP
RCLK XO XI (NC) VDD2 VSS2 T1 T2
8TH SWITCHED
CAPACITOR
FILTER
PLL 57KHz
RDS/ARI
BIPHASE
DECODER
DEFFERENTIAL
DECODER
PLL
1187.5Hz
TEST CLOCK
IC950 NJM2103 (POWER BOARD)
1
2
3
4 5
6
7
8
V+
VSB/SESIN
VSA
RESET
GND
OUTC
VSC
CR
VREF
+ –
– +
– + – +
Q
R S
3-3. IC PIN FUNCTION DESCRIPTION
IC103 µ PD780205GF (DISPLAY BOARD)
Pin No.
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
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
I/O
I
O
O
O
—
—
O
O
O
I
—
—
—
—
I
—
O
O
O
O
I
O
I
I
—
I
—
I
I
I
I
I
I
—
—
—
—
I
I
—
—
—
—
—
O
—
I
O
I
I
Description
Power supply to µ -com
Control Video IC switching
Control Video IC switching
Control mute of Video IC
Volume IC data
Volume IC clock
Volume IC enable
Read µ -com reset signal
For µ -com clock
Programming pow. supply
No use
Read decoded RDS data
Power supply to µ -com
Chip enable for ICs
Output clock signal
Output data signal
Chip enable for ICs
Tuner has tuned to a freq.
Mute tuner during scanning
Tuned freq. has stereo
Input tuner freq. data
Analog ground
Read remote comm. signal
Detect RDS signal level
Read version setting
Read key push signal
Read key push signal
Read key push signal
Read key push signal
Analog Power Supply
Analog reference ground
Read decoded RDS clock
Read signal when AC off
µ -com ground
Control mute LED
Power supply to µ -com
Detect Protector Status
Control Power relay
Read volume encoder changing
Read volume encoder changing
Pin Name
VDD +5V
S1
S2
IC.MUTE
P34
P33
S.DATA (M61501FP)
S.CLK (M61501FP)
S.CE (M61501FP)
RESET
X2
X1
VSS
—
RDS.DATA.IN
VDD +5V
S.CE (LV1050M)
S.CLK(DOLBY.TUNER)
S.DATA(DOLBY.TUNER)
S.CE (TUNER)
AUTO-STOP
T.MUTE
STEREO-IN
PLL.DATA
AVSS
SIRCS
P16
SIGNAL
VERSION
A/D IV
A/D III
A/D II
A/D I
AVDD +5.0V
AVREF
P03
P02
RDS.CLK.IN
STOP
VSS
P74
P73
P72
P71
MUTING LED
VDD +5.0V
PROTECT
POWER-RY
ENCODER
ENCODER