Sony CDX-GT420IP / CDX-GT42IPW / CDX-GT44IP Service Manual ▷ View online
33
CDX-GT42IPW/GT44IP/GT420IP
IC50 TDA7333013TR (MAIN Board (2/4))
IC210 BU4053BCFV-E2 (MAIN Board (2/4))
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
SPI
TESTREG
SCK
SPI
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
1
2
3
4
5
6
7
8
11 10 9
LEVEL
CONVERTER
BINARI
TO 1 OF 2
DECODER
WITH
INHIBIT
12
13
14
16
VDD
Y
X
X1
X0
Y1
Y0
Z1
Z
Z0
INT
VEE
VSS
X–X1
Y–Y1
Z–Z1
15
34
CDX-GT42IPW/GT44IP/GT420IP
IC220 NJM4558V-TE2 (MAIN Board (2/4))
IC260 NJM2387ADL3 (MAIN Board (3/4))
A
B
1
A OUTPUT
2
A -INPUT
3
A +INPUT
4
V-
7 B OUTPUT
6 B -INPUT
5 B +INPUT
8 V+
1
2
3
4
5
CURRENT
LIMIT
THERMAL
PROTECTION
OVERVOLTAGE
PROTECTION
BANDGAP
REFERENCE
VIN
CONTROL
VOUT
VADJ
GND
35
CDX-GT42IPW/GT44IP/GT420IP
IC250 ATMEGA32L-8AU-S5 (ATMEL Board)
PROGRAM
COUNTER
INSTRUCTION
REGISTER
INSTRUCTION
DECODER
CONTROL
LINES
PROGRAM
FLASH
STACK
POINTER
SRAM
GENERAL
PURPOSE
REGISTERS
ALU
AVR CPU
Z
Y
X
EEPROM
OSCILLATOR
ADC
INTERFACE
TIMERS
/COUNTERS
OSCILLATOR
TWI
MCU CTRL.
& TIMING
INTERNAL
CALIBRATED
OSCILLATOR
OSCILLATOR
STATUS
REGISTER
PROGRAMMING
LOGIC
PORT B
DIGITAL
INTERFACE
PORT B
DRIVERS
/BUFFERS
40
41
42
43
44
34
ADC3
ADC4
ADC5
ADC6
ADC7
AREF
GND
AVCC
TOSC2
TOSC1
TDI
TDO
MOSI
MISO
SCK
RESET
VCC
GND
XTAL2
XTAL1
RXD
TXD
INTO
ADC2
ADC1
ADC0
VCC
GND
XCK/T0
T1
AIN0/INT2
AIN1/OC0
SS
TMC
TCK
SDA
SCL
OC2
ICP1
VCC
GND
INT1
OC1A
OC1B
30
31
32
33
35
36
37
38
39
2
1
3
4
5
9
10
11
7
8
6
INTERRUPT
UNIT
INTERNAL
OSCILLATOR
WATCHDOG
TIMER
PORT A
DIGITAL
INTERFACE
PORT A
DRIVERS
/BUFFERS
PORT C
DRIVERS
/BUFFERS
22
25
26
27
28
29
23
24
21
20
19
13
12
14
15
16
17
18
PORT C
DIGITAL
INTERFACE
PORT D
DIGITAL
INTERFACE
PORT D
DRIVERS
/BUFFERS
COMP.
INTERFACE
USART
SPI
MUX &
ADC
36
CDX-GT42IPW/GT44IP/GT420IP
• IC PIN DESCRIPTIONS
• IC501 MB90F045PF-G-9059-SPE1 (SYSTEM CONTROL) (MAIN BOARD (4/4))
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 amplifier
6
NCO
O
Not used. (Open)
7
DIAG
I
Status signal input from power amplifier
8
AMPSTB
O
Stand-by signal output to power requlation
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
SA OUT
O
Serial data signal output for electronic volume spectrum analyzer
15
SA CLK
O
Serial clock signal output for electronic volume spectrum analyzer
16
ILLUMI SEL
I
Illumination voltage setting signal input “H”: 10.4 V, “L”: 9.0 V
17
COL SEL
I
Two colors select signal input “H”: Two colors, “L”: color
18 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
RDS ON
O
RDS (radio data system) ON signal output
27
LCD_CE
O
Chip enable signal output to LCD driver
28
LCD_SO
O
Serial data signal output to LCD driver
29
LCD_SCK
O
Serial clock signal output to LCD driver
30
NCO
O
Not used. (Open)
31
RE-IN0
I
Rotary encoder signal input 0
32
RE-IN1
I
Rotary encoder signal input 1
33
I2C_SCK
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, 45
NCO
O
Not used. (Open)
46
SA IN
I
Serial data signal input for electronic volume spectrum analyzer
47
NCO
O
Not used. (Open)
48
AD_ON
O
A/D converter power supply control signal output
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
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