Sony CDX-R3350EE Service Manual ▷ View online
29
CDX-R3350EE
• IC PIN DESCRIPTIONS
• IC3 MB90487APFV-G-142-BNDE1 (CD SYSTEM CONTROL) (SERVO BOARD (2/2))
Pin No.
Pin Name
I/O
Pin Description
1
NC
O
Servo 1.5 V power supply control signal output
2 to 6
NC
—
Not used. (Open)
7
CD BUS0
I/O
Bus data signal input/output 0
8
CD BUS1
I/O
Bus data signal input/output 1
9
VSS
—
Ground pin
10
CD BUS2
I/O
Bus data signal input/output 2
11
CD BUS3
I/O
Bus data signal input/output 3
12
CD BUCK
O
Bus clock signal output
13
CD XCCE
O
Chip enable signal output
14
CD XRST
O
Reset signal output
15
CD ZDET
I
Zero detection signal input
16 to 20
NC
—
Not used. (Open)
21
VCC
—
Power supply pin (+3.3 V)
22
DAC ZDETL
I
Zero data detection signal input (L-ch)
23
DAC ZDETR
I
Zero data detection signal input (R-ch)
24
NC
—
Not used. (Open)
25
RXD
I
UART RXD data signal input (MCBUS/Flash data input)
26
TXD
O
UART TXD data signal output (MCBUS/Flash data output)
27
DEC SSTBY
O
SRAM STANDBY mode control signal output
28, 29
NC
—
Not used. (Open)
30
DEC INT
I
Request signal input
31, 32
NC
—
Not used. (Open)
33
AVCC
—
Power supply pin (+3.3 V) for A/D converter
34
AVRH
—
External reference voltage for A/D converter
35
AVSS
—
Ground pin
36
NC
—
Not used. (Open)
37
DEC XMUTE
O
Mute signal output L: mute
38, 39
NC
—
Not used. (Open)
40
VSS
—
Ground pin
41
NC
—
Not used. (Open)
42
MEC LIMIT
I
Sled limit in detection switch signal input
43
MEC LOAD
O
Loading motor signal output (Load direction)
44
MEC EJECT
O
Loading motor signal output (Eject direction)
45
MEC INSW
I
Pack-in detection signal input
46
MEC DSW
I
Chucking end detection switch signal input
47, 48
MD0, MD1
I
CPU operation mode designation signal input (Connect to Vcc.)
49
MD2
I
CPU operation mode designation signal input (Connect to Vss.)
50
BUS ON
I
Bus on signal input L: bus on
51
BU IN
I
Backup on/off signal input H: backup on, L: backup off
52
CD SBSY
I
SUBQ sync signal input L: interruption
53
MEC SELFSW
I
Disc insert detection switch signal input L: disc in interruption
54, 55
NC
—
Not used. (Open)
56
UNISI
I
Serial data signal input
57
UNISO
O
Serial data signal output
58
UNICKI
I
Serial clock signal input
59
LINEOFF
O
Line off signal output
60
A ATT
O
Audio attenuation signal output H: ATT on
61
EJECT OK
I
Front panel open signal input H: eject
62
OPEN REQ
O
Front panel open/close request signal output H: open request
63
MECON
O
Mechanism deck power supply control signal output
64
CDON
O
Servo power supply control signal output
30
CDX-R3350EE
Pin No.
Pin Name
I/O
Pin Description
65
XUART
I
Sony-Bus/MC-Bus change signal input H: Sony-Bus, L: MC-Bus
66
ZMUTE
O
Zero detection mute signal output
67
MECON CHK
I
MECON rising detection signal input
68
CDON CHK
I
CDON rising detection signal input
69 to 74
NC
—
Not used. (Open)
75
RSTX
I
System reset signal input
76
NC
—
Not used. (Open)
77
X1A
—
Sub-clock connect pin Not used in this set. (Open)
78
X0A
—
Sub-clock connect pin Not used in this set. (Connect to Vss.)
79
VSS
—
Ground pin
80
X0
I
Main-clock connect pin (12 MHz)
81
X1
O
Main-clock connect pin (12 MHz)
82
VCC
—
Power supply pin (+3.3 V)
83
XTS
I
Not used in this set. (Open)
84
XINIT3
I
Not used in this set. (Open)
85
NC
—
Not used. (Open)
86
XSJIG
I
Not used in this set. (Open)
87 to 89
XINIT0 to 2
I
Not used in this set. (Open)
90 to 97
NC
—
Not used. (Open)
98
XLINE
I
Not used in this set. (Open)
99, 100
NC
—
Not used. (Open)
31
CDX-R3350EE
• IC501 MB90488BPF-G-122-BNDE1 (SYSTEM CONTROL) (MAIN BOARD (3/3))
Pin No.
Pin Name
I/O
Pin Description
1
AREASEL2
I
Destination function setting signal input 2
2
AREASEL1
I
Destination function setting signal input 1
3
AREASEL0
I
Destination function setting signal input 0
4
COL SW
I
LED color switch signal input
5
BEEP
O
Beep signal output
6
LIST SEL
I
List select signal input
7
NOSE SW
I
Front panel attachment detection signal input “L”: with panel
8
DIAG
I
Condition signal input from power amplifier
9
VOLATT
O
Electronic volume attenation control signal output
10
NCO
O
Not used. (Open)
11
VSS
—
Ground pin
12
TUATT
O
Tuner mute control signal output
13
NSMASK
O
Not used in this set. (Open)
14
ILLUMI SEL1
I
Illumination voltage setting signal input 1
15
ILLUMI SEL2
I
Illumination voltage setting signal input 2
16
NCO
O
Not used. (Open)
17
AUXIN
O
AUX light change signal output “L”: AUX, “H”: BUS IN
18
CD SI
O
Not used in this set. (Open)
19
CD SO
O
Not used in this set. (Open)
20
CD SCK
O
Not used in this set. (Open)
21, 22
NCO
O
Not used. (Open)
23
VCC5
—
Power supply pin
24
EEP SIO
I/O
Serial data input/output for EEPROM communication
25
EEP CKO
O
Serial clock output for EEPROM communication
26
AMPSTB
O
Standby signal output to power amplifier
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
Not used in this set. (Open)
31, 32
NCO
O
Not used. (Open)
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
36
AVRH
—
A/D converter reference power supply pin
37
DAVSS
—
A/D converter ground pin
38
QUALITY
I
Not used in this set.
39
VSM
I
S-meter voltage detection 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 0
44 to 48
NCO
O
Not used. (Open)
49, 50
MD0, MD1
I
Operation mode designation signal input Fixed at “H” in this set.
51
MD2
I
Operation mode designation signal input Fixed at “L” in this set.
52
KEYACK
I
Key acknowledge detection signal input
53
TU ATTIN
I
Not used in this set.
54
BUIN
I
Backup power supply detection signal input
55
CD INTQ
O
Not used in this set. (Open)
56
DAVN
I
Not used in this set.
57
NCO
O
Not used. (Open)
58
UNISI
I
SONY BUS data signal input
59
UNISO
O
SONY BUS data signal output
32
CDX-R3350EE
Pin No.
Pin Name
I/O
Pin Description
60
UNISCK
O
SONY BUS clock signal output
61 to 63
NCO
O
Not used. (Open)
64
SIRCS
I
Remote control signal (infrared rays) input
65 to 67
NCO
O
Not used. (Open)
68
FLASH W
I
Memory mode change signal input
Normally “H” input: Single chip mode, “L” after reset: Flash white mode
69
NCO
O
Not used. (Open)
70
RETRA SW
I
RETRA CD door open/close detection switch signal input
“H”: CD door close, “L”: CD door open
71
RC IN1
I
Rotary commander shift key signal input
72
ACC IN
I
Acssesory power supply detection signal input
73
TESTIN
I
Test mode detection signal input
74
TELATT
I
Telephone attenate detection signal input
75
NCO
O
Not used. (Open)
76
XKEYON
O
A/D converter power supply control signal output
77
RESET
I
Reset signal input
78
NCO
O
Not used. (Open)
79
XIN
I
Low speed operation clock signal input (32.768 kHz)
80
XOUT
O
Low speed operation clock signal output (32.768 kHz)
81
VSS1
—
Ground pin
82
OSCOUT
O
High speed operation clock signal output (18.432 MHz)
83
OSCIN
I
High speed operation clock signal input (18.432 MHz)
84
VCC3
—
Power supply pin
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
EJEECT OK SW
O
Eject OK signal output
90
CD RST
O
Not used in this set. (Open)
91
CD A0
O
Not used in this set. (Open)
92
CD STB
O
Not used in this set. (Open)
93
CD MUTE R
I
Z-mute signal input
94
CD MUTE L
O
Not used in this set. (Open)
95
CD INSW
O
Not used in this set. (Open)
96
CD SELFSW
O
Not used in this set. (Open)
97
CD LM LO
O
Not used in this set. (Open)
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
CD LIMIT
O
Not used in this set. (Open)
Click on the first or last page to see other CDX-R3350EE service manuals if exist.