Sony CDX-GT23 Service Manual ▷ View online
CDX-GT23
25
IC51 TDA7333013TR (MAIN Board (1/3))
IC401 BD3444FS-E2 (MAIN Board (1/3))
VDDA
INTERPOLATOR
RAM
BUFFER
&
CONTROL
LOGIC
TEST LOGIC
&
PIN MUX'S
I
2
C/SPI
INTERFACE
BAND PASS
FILTER
SIGMA DELTA
CONVERTER
SINC4
FILTER
REF3
REF2
REF1
VSS
VDDD
RESETN
TM
1
MPX
16
CSN
SDAOUT
RDSREG
3
INTN
MPX
SINC4REG
SDAIN
SCK
SCK
SPI
TESTREG
TESTREG
14
2
3
4
5
6
7
8
INTN
15
SA
13
SDA
12
SCL
11
OSCILLATOR
XTO
10
XTI
9
RDS
DEMODULATOR &
SYNCHRONIZATION
2
FIL
20
GND
19
SDA
18
SCL
17
MUTE
16
VCC
15
OUT-FR
14
OUT-FL
13
OUT-RR
12
OUT-RL
11
FADER
VCC
FADER:
0 – -62dB/1dB step
0 – -62dB/1dB step
TREBLE:
• fc = 10kHz
• GAIN = ±20dB/1dB step
• Q = 1
• fc = 10kHz
• GAIN = ±20dB/1dB step
• Q = 1
BASS:
• fc = 100Hz
• GAIN = ±20dB/1dB step
• Q = 1
• fc = 100Hz
• GAIN = ±20dB/1dB step
• Q = 1
VCO
I
2
C BUS
LOGIC
FADER
FADER
FADER
BUS-RCH
1
BUS-LCH
2
TU-RCH
3
TU-LCH
4
CD-RCH
5
CD-LCH
6
AUX-RCH
7
DN1
8
DN2
9
AUX-LCH
10
INPUT SELECTOR
INPUT GAIN
(0 – -20dB/1dB step)
PRIMARY VOLUME
(+12dB – -20dB/1dB step)
MUTE
BASS/TREBLE
VCC/2
• IC Block Diagrams
CDX-GT23
26
IC750 TDA8589BJ/N2/R1/M5 (MAIN Board (2/3))
MUTE
MUTE
ENABLE
LOGIC
STANDBY/
MUTE
BATTERY
DETECTION
CHIP DETECT/
DIAGNOSTIC
PROTECTION/
DIAGNOSTIC
SWITCH
REGULATOR
SWITCH
REFERENCE
VOLTAGE
LOADDUMP
PROTECTION
TEMPERATURE
PROTECTION
BACK-UP
SWITCH
REGULATOR
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
TAB
OUT–FL–
OUT–FL+
OUT–RL–
OUT–RL+
IN–RL
S–GND
IN–RR
OUT–RR+
OUT–RR–
OUT–FR+
OUT–FR–
DIAG
ANT–REM
AMP–REM
SERVO3.3V
MECH6V
VP
BU+B
SDA
SCL
VP2
PGND1
SVR
IN–FL
IN–FR
BEEP
PGND3
VP1
STB
PGND4
RST
CRES
AUDIO+B
GND
PANEL+B
CBU
FL
RL
RR
VP
FR
I
2
C BUS
CDX-GT23
27
• IC PIN DESCRIPTIONS
• IC501 MB90F045PF-G-9014-SPE1 (SYSTEM CONTROL) (MAIN BOARD (3/3))
• IC501 MB90F045PF-G-9014-SPE1 (SYSTEM CONTROL) (MAIN BOARD (3/3))
Pin No.
Pin Name
I/O
Pin Description
1
AREASEL0
I
Destination function setting pin 0
2
AREASEL1
I
Destination function setting pin 1
3
AREASEL2
I
Destination function setting pin 2
4
B OUT SEL
I
Black out with/without discrimination select signal input “H”: Black out
5
BEEP
O
BEEP signal output to power amplifi er
6
CYRIL_SEL
I
Cyril correspondence discrimination signal input “L”: No correspondence
7
NOSE_SW
I
Front panel attachment detect signal input “L”: Panel on, “H”: Panel off
8
DIAG
I
Status signal input from power amplifi er
9
VOLATT
O
Electronic volume attenuate control signal output
10
NCO
O
Not used. (Open)
11
VSS
—
Ground pin
12
TUATT
O
Tuner mute control signal output
13
NSMASK
O
Noise mask signal output
14
ILLUMI SEL1
I
Illumination select signal input 1
15
ILLUMI SEL2
I
Illumination select signal input 2
16 to 22
NCO
O
Not used. (Open)
23
VCC5
—
Power supply pin (+3.3V)
24
EEP_SIO
I/O
EEPROM bus serial data signal input/output
25
EEP_CKO
O
EEPROM bus serial clock signal output
26
AMPSTB
O
Stand-by signal output to power requlation
27
LCD_CE
O
Chip enable signal output to LCD driver
28
LCD_SO
O
Serial data signal output to LCD driver
29
LCD_CKO
O
Serial clock signal output to LCD driver
30
RDS ON
O
RDS (radio data system) ON signal output
31
RE-IN0
I
Rotary encoder signal input 0
32
RE-IN1
I
Rotary encoder signal input 1
33
I2C_CKO
O
I2C bus serial clock signal output
34
I2C_SIO
I/O
I2C bus serial data signal input/output
35
DAVDD
—
A/D converter power supply pin (+3.3V)
36
AVRH
—
A/D converter external reference power supply pin (+3.3V)
37
DAVSS
—
A/D converter Ground pin
38
QUALITY
I
Noise detect signal input
39
VSM
I
S-meter voltage detect signal input
40
KEYIN1
I
Key signal input 1
41
KEYIN0
I
Key signal input 0
42
VSS
—
Ground pin
43
RC_IN0
I
Rotary commander key signal input Not used in this set. (Pull up)
44 to 48
NCO
O
Not used. (Open)
49
MD0
I
Operation mode setting pin 0 (Pull up)
50
MD1
I
Operation mode setting pin 1 (Pull up)
51
MD2
I
Operation mode setting pin 2 (Pull down)
52
KEYACK
I
Key acknowledgment detect signal input
53
TU_ATTIN
I
Tuner mute zero cross detect signal input
54
BUIN
I
Back-up power supply detect signal input
55
NCO
O
Not used. (Open)
56
DAVN
I
RDS data block synchronized detect signal input
57
NCO
O
Not used. (Open)
58
UNISI
I
S-BUS data signal input
59
UNISO
O
S-BUS data signal output
60
UNISCK
O
S-BUS clock signal output
61
CODEC_SEL
I
MP3 select signal input “H”: MP3, “L”: Non-MP3
62
KEY SEL
I
Key select signal input
63
NCO
O
Not used. (Open)
64
SIRCS
I
Remote control signal input Not used in this set. (Pull up)
CDX-GT23
28
Pin No.
Pin Name
I/O
Pin Description
65 to 67
NCO
O
Not used. (Open)
68
FLASH_W
I
Memory mode select signal input
Normally “H” input: Single chip mode, after reset “L”: Flash write mode
Normally “H” input: Single chip mode, after reset “L”: Flash write mode
69, 70
NCO
O
Not used. (Open)
71
RC_IN1
I
Rotary commander shift key signal input Not used in this set. (Pull up)
72
ACC_IN
I
Accessory power supply detect signal input
73
TESTIN
I
Test mode detect signal input
74
TELATT
I
Telephone attenuate detect signal input Not used in this set. (Pull down)
75
NCO
O
Not used. (Open)
76
AD_ON
O
A/D converter power supply control signal output
77
RESET
I
System reset signal input
78
NCO
O
Not used. (Open)
79
XOUT
O
Low speed operation clock signal output (32.768 kHz)
80
XIN
I
Low speed operation clock signal input (32.768 kHz)
81
VSS1
—
Ground pin
82
OSCIN
I
High speed operation clock signal input (18.432 MHz)
83
OSCOUT
O
High speed operation clock signal output (18.432 MHz)
84
VCC3
—
Power supply pin (+3.3 V)
85
DEMOSEL
I
DEMO select signal input “H”: DEMO on, “L”: DEMO off
86
ATT
O
Audio mute control signal output
87
BUSON
O
BUS ON signal output
88
SYSRST
O
System reset signal output
89 to 92
NCO
O
Not used. (Open)
93
Z-MUTE
I
CD zero cross mute detect signal input
94
NCO
O
Not used. (Open)
96
MO-DISP
I
Motion display signal input “H”: Motion display on, “L”: Motion display off
97
DIM_SEL
I
Dimmer select signal input “H”: Dimmer, “L”: No dimmer
98
CD_ON
I
CD mechanism servo power supply control request signal input
99
CDM_ON
I
CD mechanism deck power supply control request signal input
100
COL_SW
I
Illumination color select signal input
“H”: Two colors selection/initial slave, amber, “L”: Color/slave, amber
“H”: Two colors selection/initial slave, amber, “L”: Color/slave, amber
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