Sony CDX-MP40 Service Manual ▷ View online
17
CDX-MP40
• IC5 CXD9684R-005 (DSP) (SERVO BOARD)
Pin No.
Pin Name
I/O
Pin Description
1
/RESET
I
Reset input pin “L”: reset
2
MIMD
I
Microcomputer interface mode selection input “H”: I2C, “L”: TSB
3, 4
AD0, AD1
O
External SRAM address signal output
5
MIDIO (I2C_SDA)
I/O
Serial data input/output
6
MICK (I2C_SCL)
I
Serial clock input
7
AD2
O
External SRAM address signal output
8
VDDT (3.3V)
—
Power supply (3.3 V) for digital circuit
9
SDO
O
Data output
10, 11
AD3, AD4
O
External SRAM address signal output
12
SDI0
I
Data input 0
13
BCKIA
I
Bit clock input A
14
LRCKIA
I
LR clock input A
15
AD5
O
External SRAM address signal output
16
CE
O
External SRAM chip enable signal output
17
OE
O
External SRAM output enable signal output
18
VDD (2.5V)
—
Power supply pin (2.5 V) for digital circuit
19
STANDBY
I
Standby mode control signal input “H”: STB, “L”: normal
20
VSS (2.5VGND)
—
Ground pin for digital circuit
21
VSSL (2.5VGND)
—
Ground pin for DAC Lch
22
VRAL
—
Reference voltage pin for DAC Lch
23
LO
O
DAC Lch signal output (Open)
24
VDAL (2.5V)
—
Power supply pin (2.5 V) for DAC Lch
25
VDAR (2.5V)
—
Power supply pin (2.5 V) for DAC Rch
26
RO
O
DAC Rch signal output (Open)
27
VRAR
—
Reference voltage pin for DAC Rch
28
VSSR (2.5VGND)
—
Ground pin for DAC Rch
29
TESTP
I
Pin for test “H”: test mode, “L”: normal (fixed at “L”)
30
CKS
I
VCO selection input “H”: VCO, “L”: X1 input
31 – 34
AD12 to AD9
O
External SRAM address signal output
35
VDDT (3.3V)
—
Power supply pin (3.3 V) for digital circuit
36 – 38
AD8 to AD6
O
External SRAM address signal output
39
REQ
O
Interrupt request signal output to the CD master control
40
VSS
—
Ground pin for digital circuit
41, 42
AD13, AD14
O
External SRAM address signal output
43
WR
O
External SRAM write signal output
44, 45
AD16, AD15
O
External SRAM address signal output
46, 47
IO0, IO1
I/O
External SRAM data input/output
48
VSS
—
Ground pin for digital circuit
49 – 51
IO2 to IO4
I/O
External SRAM data input/output
52
VDD (2.5V)
—
Power supply pin (2.5 V) for digital circuit
53 – 55
IO5 to IO7
I/O
External SRAM data input/output
56
VSSP
—
Ground pin for VCO circuit
57
PDO
O
PLL phase error detection signal output
58
VCOI
I
VCO control voltage input
59
VDDP
—
Power supply pin for VCO circuit
60
XRDE
I/O
External clock input, audio clock output Not used. (Open)
61
VDDX (2.5V)
—
Power supply pin for oscillation circuit
62
XI
I
Resonator pin
63
XO
O
Resonator pin
64
VSSX
—
Ground pin for oscillation circuit
18
CDX-MP40
• IC801 MN101C49KSJ (SYSTEM CONTROL) (MAIN BOARD)
Pin No.
Pin Name
I/O
Pin Description
1
VREF–
—
Power supply pin for A/D converter
2
VSM
I
S-meter voltage detection signal input from the tuner unit (TU601)
3
NIL
I
Not used. (Connected to ground.)
4
KEYIN1
I
Key signal input
5
KEYIN0
I
Key signal input
6
RC_IN0
I
Rotary commander key signal input from the remote-in jack
7
QUALITY
I
Noise detection signal input (AEP, UK model)/Connected to ground. (US, Canadian model)
8
DST SEL
I
Destination setting pin (US, Canadian model)
9
NIL
I
Not used. (Connected to ground.)
10
VREF+
—
Power supply pin for A/D converter
11
VDD
—
Power supply pin
12
OSCOUT
O
High speed clock output (18.43 MHz)
13
OSCIN
I
High speed clock input (18.43 MHz)
14
VSS
—
Ground pin
15
XIN
I
Low speed clock input (32.768 kHz)
16
XOUT
O
Low speed clock output (32.768 kHz)
17
MMOD
—
Memory mode selection input “L”: single chip mode (connected to ground)
18
LCDSO
O
Serial data output to the LCD driver
19
LCDCE
O
Chip enable signal output to the LCD driver
20
LCDCKO
O
Serial clock output to the LCD driver
21 – 23
NCO
O
Not used. (Open)
24
SYSRST
O
System reset signal output
25
BUSON
O
Bus on signal output to the bus interface
26
KEYACK
I
Key acknowledge detection signal input
27
DAVN (NIL)
I
RDS data block sync detection signal input (AEP, UK model)/Connected to
ground. (US, Canadian model)
28
BU_IN
I
Back up power supply detection signal input
29
SIRCS
I
Remote control signal input from the remote control receiver
30
TUATT IN
I
ATT control signal input from tuner unit.
31
NIL
I
Not used. (Connected to ground.)
32
NIH
I
Not used. (Connected to power supply.)
33
RESET
I
Microcomputer reset signal input from the reset IC
34
NOSE SW
I
Front panel with/without detection signal input “L”: panel with
35
BEEP
O
Beep signal output to the power amplifier
36
NCO
O
Not used. (Open)
37
TESTIN
I
Test mode detection signal input
38
ACCIN
I
Accessory power supply detection signal input
39
NCO
O
Not used. (Open)
40
TELATT
I
TEL ATT detection signal input
41
NIH
I
Fixed at “H”.
42
BUSSO
O
Sony_Bus serial data output to the bus interface IC
43
BUSSI
I
Sony_Bus serial data input from the bus interface IC
44
BUSCKO
O
Sony_Bus serial clock output to the bus interface IC
45
I2CSIO
I/O
I2C bus serial data input/output
46
NCO
O
Not used. (Open)
47
I2CCKO
O
I2C bus serial clock output
48
NCO
O
Not used. (Open)
49
NCO
O
Not used. (Open)
50
POW_ON
O
System power supply control signal output
51 – 66
NCO
O
Not used. (Open)
67
ATT
O
System ATT control signal output
68
NCO
O
Not used. (Open)
19
CDX-MP40
Pin No.
Pin Name
I/O
Pin Description
69
TU ON
O
Tuner power supply control signal output
70
VOLATT
O
Electronic volume ATT control signal output to the electronic volume
71
NCO
O
Not used. (Open)
72
AMPON
O
Power amplifier standby control signal output to the power amplifier
73
NCO
O
Not used. (Open)
74
AMPATT
O
Power amplifier ATT control signal output to the power amplifier
75
DOORIND
O
Sub panel power supply control signal output
76 – 84
NCO
O
Not used. (Open)
85
NS MASK
O
Noise mask signal output
86
EE_CKO
O
EEPROM serial clock output
87
EE_SIO
I/O
EEPROM serial data input/output
88
TUATT
O
Tuner ATT signal output to the tuner unit
89, 90
NCO
O
Not used. (Open)
91
XKEYON
O
Power supply control signal to the function key
92
ILL ON
O
Illumination power supply control signal output
93
NCO
O
Not used. (Open)
94
DOORSW
I
Front panel open/close detection signal input “L”: close, “H”: open
95
DAVSS
—
Ground pin for D/A converter
96
NCO
O
Not used. (Open)
97
FLASH W
I
Flash write detection signal input
98
RC_IN1
I
Remote commander shift key signal input from the remote-in jack “L”: shift key on
99
NCO
O
Not used. (Connected to ground.)
100
DAVDD
—
Power supply pin for D/A converter
20
CDX-MP40
3-2. CIRCUIT BOARDS LOCATION
MAIN board
SERVO board
LIMIT SW board
SPEAKER board
tuner unit
(TUX501)
(TUX501)
RELAY board
DISC IN SW board
LOAD SW board
DISPLAY board (US, CND)
KEY board (AEP, UK)
KEY board (AEP, UK)
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