Sony CX-LMN75 / XR-MN75 Service Manual ▷ View online
45
CX-LMN75
IC301 TC94A34FG-002
33
34
35
36
37
38
39
40
41
42
1
8
43
57
62
58
61
56
63
52
50
47
46
45
44
48
49
25
26
27
28
29
30
31
32
17
18
19
20
21
22
23
24
9
10
11
2
3
4
5
6
7
64
55
53
51
12
13
14
15
16
54
SDO2/
/CS/
/RAS
/CS/
/RAS
PO12/
AD15/
/CAS
AD15/
/CAS
SDO3/
/OE
/OE
TXO
DIT
Bus
Switch
BUCK/
PO11/
AD14
PO11/
AD14
/CCE/
PO10/
AD13
PO10/
AD13
PO9/AD12
PO8/AD11
VDDM
General
Input/
Output
Port
Address Calc.
2sets
Y-
P
ointer
register
C-P
ointer
register
CDP
Control
I/F
Sub Code I/F
X-P
ointer
register
SRMSTB
VDDT
AD10
AD9
AD8
PO7AD7
PO6/AD6
PO5/AD5
YRAM
4k w
ord
CRAM
4k w
ord
ERAM
4k w
ord
x1
2k w
ord
x1
CR
OM
4k w
ord
x9
XRAM
4k w
ord
Timer
Flag
Interrupt
Control
SRAM/DRAM
I/F
SRAM I/F
1k bit
SRAM
X-Bus
Y
-Bus
VCO
Timing
Generator
PRAM
4k w
ord
PR
OM
4k w
ord
x5
40 bit
Instr
uction
Decoder
Prog
ra
m
Control
MCU I/F
register
XO/X1/X2
Y0/Y1/Y2
MX
MY
MZ
MA
C
A0
A1
AX
AY
ALU
A2
A3
round & limit
round & limit
A
udio I/F
SBSY/
BCKIB
D
ATA
/
SDI1
LRCKIA
BCKIA
SDI0
LRCKO
BCKO
SDO0
VDDT
VSS
/MIACK/
AD16
/MICK
MIDIO
/MILP
/MICS
STANDBY
/RESET
VDDP
PO4/
AD4
PO3/
AD3
PO2/
AD2
PO0/
AD0
VSS
PO1/
AD1
VDD
VSSP
VCOI
VDDX
TEST
60
VSSX
CK
O/
PO13/
AD16
MIMD
59
XI
XO
CKI/CLCK/
IRQ/FI0
VDD
VSS
PIO0/
SDI2/IO0
PIO1/
SDI3/IO1
PIO2/
IO2
PIO3/
IO3
B
US3/FI1/
PIO4/IO4
B
US2/FI2/
PIO5/IO5
B
US1/FI3/
PIO6/IO6
BU
S0/
PIO7/IO7
SDO1//WE
SFSY/
LRCKIB
JT
A
G
I/F
46
CX-LMN75
— MAIN Board —
IC601 BD3882FV
40
REC1O
39
REC1N
38
REC2N
37
REC2O
36
INC2
35
INC1
34
INB2
33
INB1
32
INA2
31
INA1
30
RVFIL2
29
RVFIL1
28
OUT1
27
OUT2
26
BAS12
25
BAS11
24
BAS22
23
BAS21
22
MID12
21
MID11
BASS
REAR
VOLUME
REAR
VOLUME
BASS
MIDDLE
18
SI
19
SC
20
VEE
16
MID22
17
VDD
14
YRE22
15
MID21
13
TRE21
11
TRE11
12
TRE12
MIDDLE
TREBLE
TREBLE
8
VOLIN1
9
VOLIN2
10
MGND
FRONT
VOLUME
FRONT
VOLUME
7
PB1O
LOGIC
CONTROL
6
PB2O
5
FGND
4
PB2N
1
PB1N
2
PB1P
3
PB2P
— CONNECTOR Board —
IC701, 711, 721 BA6956AN
1
2
3
4
5
6
7
8
9
CONTROL LOGIC
TSD
VREF
OUT2
OUT1
RNF
VM
VCC
FIN
GND
RIN
47
CX-LMN75
8-16. IC PIN FUNCTION DESCRIPTION
• IC901
M3062CMEN-A08FPU0 (SYSTEM CONTROLLER) (MAIN BOARD)
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
I/O
O
O
O
I
I/O
I
O
I
—
I
O
I
O
—
I
—
—
I
I
I
O
O
O
I
I
I
O
O
—
—
—
I
I
I
O
O
O
O
I
O
O
O
O
O
O
O
O
O
O
O
Pin Name
O-LCDAT
O-LCDSCK
O-BASS LED
I-RMC
O-MP3DAT
I-MP3DAT
O-MP3CLK
BYTE
FLASH
32KHz-IN
32KHz-OUT
RESET
16MHz-OUT
VSS1
16MHz-IN
VDD1
MNI
RDSCLK
I-RDS_CLK
AC-CUT
O-TUMUT
O-PLLCE
O-PLLDAT
I-STEREO
I-PLLDAT
I-TUNED
O-PLLCLK
O-BKLIGHT
O-SCL
O-SDA
I-USBSW
I-MIACK
I-MP3REQ
O-USBON
O-DATA
O-XLT
O-CLOK
O-POWER
I-PROTECT
O-LCDRS
O-BASS_0
O-BASS_1
O-PB2
O-BIAS
O-MP3RST
O-LCDCD
I-MICK
O-MILP
O-MP3STB
O-FUNC_CLK
Description
Not used (open)
Data output to the fluorescent indicator tube
LED (i-Bass/DEMO) control signal output
Remote control signal input from the remote sensor
Data input/output from/to the MP3 IC
Data input from the CD unit
Clock output to the CD unit
Destination setting input terminal
Not used
Oscillaion circuit signal input for the real time clock
Oscillaion circuit signal output for the real time clock
Reset signal input
Oscillaion circuit signal output for the system main clock
Ground terminal
Oscillaion circuit signal input for the system main clock
Power supply terminal (+3.3 V)
Not used
Clock signal input from the tuner
RDS signal input from the tuner
Power down detection signal input
Muting control signal output to the tuner
Latch signal output to the tuner
Data output to the tuner
Stereo detection signal input from the tuner
Data input from the tuner
Tuner tuned status signal input from the tuner
Clock output to the tuner
LED (BACK LIGHT) control signal output
Not used
Not used
Not used
Acknowledge signal input from the MP3 IC
Request signal input from the MP3 IC
Not used
Data output to the CD unit
Control data latch signal output to the CD unit
Clock output to the CD unit
Main power control signal output
Voltage detection signal input
Clock signal output to the fluorescent indicator tube
Level control signal output for i-Bass
Level control signal output for i-Bass
Playback selection signal output for the tape deck
Bias control signal output to the tape deck
Reset signal output to the MP3 IC
Latch signal output to the fluorescent indicator tube
Clock output to the MP3 IC
Latch pulse signal output to the MP3 IC
Strobe signal output to the MP3 IC
Clock output to the function IC (IC601)
48
CX-LMN75
Pin No.
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
I/O
I
O
O
O
O
I
I
I
I
O
I
—
I
—
O
—
I
I
I
O
O
I
O
I
I
I
I
I
I
I
O
O
O
I
I
I
I
I
I
I
I
I
—
I
I
—
I
—
—
O
Pin Name
I-PLAY SW
O-LCDCS
O-SOL
O-MOTOR
O-MUTE
I-SENS
I-XTACN
I-RDSDAT
I-ELV_E2
O-XRST
I-ELV_E1
VDD2
I-ELV_E3
VSS2
O-CD_ON
MODEL
I-SLD_E3
I-SW4
I-SLD_E1
O-ELV_POS
O-LOD_NEG
I-SW5-B
O-SLD_POS
I-WAKEUP
I-SW2-A
I-SW2-B
I-SW3
I-D.SENSOR
I-SW1-A
I-SW5-A
O-SLD_NEG
O-ELV_NEG
O-LOD_POS
I-SLD_E0
I-SLD_E2
I-ELV_E0
I-LEVEL-R
I-LEVEL-L
I-R.REC
I-ENC2
I-ENC1
I-ENC0
I-SUFFIX
I-END SW
I-KEY1
VSS3
I-KEY0
VREF
AVCC
O-STLED
Description
PLAY switch signal input from the tape deck
Chip select signal output to the fluorescent indicator tube
Solenoid control signal output to the tape deck
Motor control signal output to the tape deck
Muting control signal output to the power amplifier
SENS signal input from the CD unit
Clock input from the CD unit
RDS data input from the tuner
ELV_E2 switch signal input from the CD mechanism
Reset signal output to the CD unit
ELV_E1 switch signal input from the CD mechanism
Power supply terminal (+3.3 V)
ELV_E3 switch signal input from the CD mechanism
Ground terminal
CD power supply control signal output
Power supply terminal
SLD_E3 switch signal input from the CD mechanism
SW4 switch signal input from the CD mechanism
SLD_E1 switch signal input from the CD mechanism
Elevator motor control signal output
Loading motor control signal output
SW5-B switch signal input from the CD mechanism
Sled motor control signal output
SENS signal from the Function Key
SW2-A switch signal input from the CD mechanism
SW2-B switch signal input from the CD mechanism
SW3 switch signal input from the CD mechanism
Disc sensor signal input
SW1-A switch signal input from the CD mechanism
SW5-A switch signal input from the CD mechanism
Sled motor control signal output
Elevator motor control signal output
Loading motor control signal output
SLD_E0 switch signal input from the CD mechanism
SLD_E2 switch signal input from the CD mechanism
ELV_E0 switch signal input from the CD mechanism
Signal output from the Function IC (Rch)
Signal output from the Function IC (Lch)
Record protect detect switch signal input (rear)
Treble signal input from the rotary encoder
Bass signal input from the rotary encoder
Volume signal input from the rotary encoder
Ground terminal
END switch signal input from the tape deck
Key input 1
Ground terminal
Key input 0
Reference voltage
Power supply terminal
Standby LED control signal output (“L” : active)
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