Sony CDX-GT290EB / CXS-2969F / CXS-29FQ Service Manual ▷ View online
CDX-GT290EB
21
• IC Block Diagrams
IC681 TK11133CSCL-G (MAIN Board (1/3))
1
2
3
5
4
CONT
GND
NOISE
VIN
VOUT
OVERHEAT &
OVERCURRENT
PROTECTION
BAND GAP
REFERENCE
CONTROL
CIRCUIT
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
SERVO-3.3V
MECH-6V
VP
BU+B
I2C_SIO
I2C_SCK
VP2
P-GND1
SVR
IN-FL
IN-FR
BEEP
P-GND3
VP1
STB
P-GND4
RST
CRES
AUDIO+B
(8.5V)
(8.5V)
GND
PANEL+B
CBU
FL
RL
RR
VP
FR
I
2
C BUS
IC750 TDA8588AJ/N2/R1 (MAIN Board (1/3))
CDX-GT290EB
22
IC1 TEF6617T/V1/S470,518 (MAIN Board (2/3))
AMRFIN 1
AMRFDEC 2
FMIN2 3
FMIN1 4
LOUT 8
ROUT 9
MPXOUT 13
RSSI 14
XTAL2 15
XTAL1 16
GNDAUD 10
GNDRF 5
VCC2 6
AMRFAGC 7
AMIFAGC2 11
MPXIN 12
AMSELOUT2
32
AMSELOUT1
31
AMIFAGC1
30
AMSELIN2
29
PLL
25
VCODEC
24
VREF
20
SDA
19
SCL
18
GNDD
17
GND
23
AMSELIN1
28
DAV N
27
PLLREF
26
VCC1
22
VREGSUP
21
AM
TUNER
FM
TUNER
OUTPUT
PLL
TUNING
SYSTEM
I2C BUS
POWER
SUPPLY
STEREO DECODER
HIGH CUT
SOFT MUTE
NOISE BLANKER
SIGNAL
IMPROVEMENT
CONTROL
BANDWIDTH
CONTROL
RDS
DEMODULATOR
AND
DECODER
CDX-GT290EB
23
IC401 BD3447AFV-E2 (MAIN Board (2/3))
21
22
29
30
23
24
40
FIL
GND
I2C_SIO
I2C_SCK
OUT_FLCH
OUT_FRCH
OUT-RLCH
OUT-RRCH
OUT_SLCH
OUT_SRCH
SA_OUT
SA_DA
MIN1
MIN2
EBIAS
DS2_R
DS1_R
DS3_R
SA_CLK
39
38
37
VCC(8.5V)
36
27
28
25
26
31
32
33
34
35
20
19
12
11
18
17
1
BUS_LCH
BUS_RCH
TU_LCH
TU_RCH
CD_RCH
AUX_LCH
AUX_GND
AUX_RCH
PD_R
PD_G
PD_L
FP1
FN2
FP2
EBIAS
DS2_L
DS1_L
DS3_L
FN1
2
3
4
CD_LCH
5
14
13
16
15
10
9
8
7
6
I2C BUS
LOGIC,
VCO
FADER
FADER
FADER
HPF
LPF
GND
ISO AMP
GND
ISO AMP
180
°/0°
3 BAND P-EQ (TONE CONTROL)
7 BAND
SPECTRUM ANALYZER
/LEVEL METER
EFFECT
VOLUME/MUTE
INPUT GAIN
INPUT SELECTOR (3 SIGLE-END AND 3 STEREO IS O)
FADER
FADER
SPEANA
LVL METER
LVL METER
SPEANA
GND
ISO AMP
GND
ISO AMP
GND
ISO AMP
GND
ISO AMP
CDX-GT290EB
24
• IC Pin Function Description
MAIN BOARD (3/3) IC501 R5F3640DDA21FA (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Description
1
LCD_SO
O
Liquid crystal display panel serial data signal output
2
LCD_CLK
O
Liquid crystal display panel serial clock signal output
3
NOSE_SW
I
Front panel detach/attach detect signal input (L: with front panel, H: without front panel)
4
SIRCS
I
SIRCS signal input
5
UNISO
O
SONY BUS serial data signal output
6
UNISI
I
SONY BUS serial data signal input
7
UNISCK
O
SONY BUS serial clock signal output
8
BYTE
I
External data bus width select signal input (Connect to VSS in this set)
9
CNVSS
I
Flash writer IF (CNVSS) signal input (L: normally operation, H: fl ash write)
10
XIN
I
Low speed operation clock signal input (32.768 kHz)
11
XOUT
O
Low speed operation clock signal output (32.768 kHz)
12
RESET
I
System reset signal input
13
OSCOUT
O
High speed operation clock signal output (11.06 MHz)
14
VSS
―
Ground
15
OSCIN
I
High speed operation clock signal input (11.06 MHz)
16
VCC1
―
Power supply pin (+3.3 V)
17
NMI
I
Non-maskable interrupt signal input (Fixed at H in this set)
18
EQ_SEL
I
Equalizer type setting signal input (Fixed at H in this set)
19
BUIN
I
Backup power supply detect signal input
20
CDM_ON
I
CD mechanism deck power supply control request signal input
21
Z-MUTE
I
Z mute signal input
22 to 27
NCO
O
Not used. (Open)
28
BEEP
O
Beep signal output for the power amplifi er IC
29
I2C_SCK
O
IIC communication serial clock signal output
30
I2C_SIO
I/O
IIC communication serial data signal input/output
31
FW_TXD
O
Flash writer IF (serial data) signal output
32
FW_RXD
I
Flash writer IF (serial data) signal input
33
FW_CLK
I
Flash writer IF (serial clock) signal input
34
FW_BUSY
O
Flash writer IF (busy) signal output
35 to 40
NCO
O
Not used. (Open)
41
EPM
O
EPM signal output (Connect to VSS in this set)
42
RC_IN1
I
Rotary commander shift key signal input
43
SYSRST
O
System reset signal output
44
BUSON
O
BUS ON signal output
45
NCO
O
Not used. (Open)
46
CE
O
CE signal output (Connect to CNVSS in this set)
47 to 51
NCO
O
Not used. (Open)
52
CD_ON
I
CD mechanism servo power supply control request signal input
53
TESTIN
I
Test mode detect signal input (Fixed at H in this set)
54
TELATT
I
Telephone attenuator detect signal input (Fixed at L in this set)
55
ACC_IN
I
Accessory power supply detect signal input
56
ATT
O
Audio mute control signal output
57
DIAG
I
Condition signal input from power amp IC
58
AMPSTB
O
Standby signal output for power regulator IC
59
NCO
O
Not used. (Open)
60
NCO
O
Not used. (Open)
61
NCO
O
Not used. (Open)
62
VCC2
―
Power supply pin (+3.3 V)
63
COL SEL/NCO
O
Not used. (Open)
64
VSS
―
Ground
65
ILLUMI SEL
I
Key illumination voltage setting signal input (L: 9 V)
66
NCO
O
Not used. (Open)
67
DIM SEL
I
Dimmer function setting signal input (L: with dimmer function)
68
B-OUT SEL
I
Black out function setting signal input (H: with black out function)
69
AREASEL3
I
Destination setting pin 3 (Fixed at L in this set)
70
AREASEL2
I
Destination setting pin 2 (L: FM (50K)/AM (9K), H: FM (200K)/AM (10K))
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