Sony ST-SP55 Servis Kılavuzu - Sayfa 8

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Sony ST-SP55 Servis Kılavuzu
www.freeservicemanuals.info
ST-SP55

3-7. IC PIN FUNCTIONS

• IC701 M30620MCA-A67FP MASTER CONTROL (MAIN BOARD)
Pin No.
Pin Name
1
DP_DATA
O
LCD data output.
2
DP_CLK
O
LCD clock output.
3
DP_CS
O
LCD chip STB signal output.
4
BL_DIMMER
O
LCD back light bright signal output. (H: BRIGHT, L: DARK)
5
N.C
—
Not used.
6
N.C
—
Not used.
7
N.C
—
Not used.
8
BYTE
—
Connected to ground.
9
GND
—
Connected to ground.
10
XC IN
I
SUB CLOCK input. (32.768kHz)
11
XC OUT
O
SUB CLOCK output. (32.768kHz)
12
RESET
I
System master reset input.
13
X-OUT
O
MAIN SYSTEM CLOCK output. (10MHz)
14
VSS
—
Ground
15
X-IN
I
MAIN SYSTEM CLOCK input. (10MHz)
16
VCC
—
Power supply. (EVER +5V)
17
NMI
I
PULL UP (EVER +5V)
18
ST_MUTE
O
ST MUTE singal output.
19
SCOR
I
CD Q-data request signal input.
20
RDS-INT
I
RDS clock signal input.
21
RDS-DATA
I
RDS data signal input.
22
AC OUT
I
TA AC interrupt signal input. (H: AC ON, L: AC OFF)
23
STEREO
I
ST STEREO signal input. (L: STEREO)
24
TUNED
I
ST TUNED signal input. (L: TUNED)
25
ST_CE
O
ST PLL chip enable signal output.
26
ST_DOUT
O
ST PLL data signal output.
27
ST_DIN
I
ST PLL data signal input.
28
ST_CLK
O
ST PLL clock output.
29
IIC_CLK
I/O
IIC SCL output.
30
IIC_DAT
I/O
IIC SDA output.
31
TXD1
—
Not used.
32
SQ DATA
I
CD SUBQ data input.
33
SQ CLK
O
CD SUBQ clock output.
34
LPC_HOLD
O
CD LPC hold output.
35
CD_DATA
O
CD data signal output.
36
N.C
I
Not used.
37
CD_CLK
O
CD clock output.
38
BD_PWR
O
CD_BD power control signal output. (H: ON, L: OFF)
39
LOAD_OUT
O
CD loading motor control signal output.
40
LOAD_IN
O
CD loading motor control signal output.
41
SENSE
I
CD SENSE signal input.
42
CD_XLAT
O
CD XLAT signal output.
43
PLAY_LED
O
CD PLAY LED signal output. (H: OFF, L: ON)
44
PAUSE_LED
O
CD PAUSE LED signal output. (H: OFF, L: ON)
45 to 50
N.C
—
Not used.
51
RO_MUTE_AUX
O
AUX out mute signal output. (H: MUTE OFF, L: MUTE)
52 to 57
N.C
—
Not used.
58
FUNC_INHIBIT
O
TA input select inhibit signal. (H: INHIBIT, L: NOT INHIBIT)
59
N.C
O
Not used.
60
FUNC2
O
TA input select signal output.
61
FUNC1
O
TA input select signal output.
62
VCC
—
Power Supply (EVER +5V)
63
N.C
—
Not used.
05/28/2012
Function
10
Pin No.
Pin Name
64
VSS
—
Ground.
65
N.C
—
Not used.
66
N.C
—
Not used.
67
PCPON
I
Power ON signal from PC.
68 to 71
N.C
—
Not used.
72
DSG_ON
O
TA DSG off control signal output. (H: DSG OFF, L: DSG ON)
73
VOL_LAT
O
ST, "(IC401)" Volume latch.
74
VOL_CLK
O
ST, "(IC401)" Volume clock.
75
VOL_DATA
O
ST, "(IC401)" Volume data signal output.
76
PRE_MUTE
O
TA PRE MUTE signal output. (H: MUTE OFF, L: MUTE ON)
77
XHP_MUTE
O
TA headphone MUTE signal output. (H: MUTE OFF, L: MUTE ON)
78
ON/STANDBY
O
TA Power amp MUTE/Standby LED signal output. (H: ON, L: STANDBY)
79
PWR_RELAY
O
TA Standby relay signal output. (H: RELAY OFF, L: RELAY)
80
SP_RELAY
O
TA Speaker relay signal output.
81
N.C
—
Not used.
82
N.C
—
Not used.
83
DP_PWR
O
LCD power ON/OFF signal output. (H: OFF, L: ON)
84
ILL
O
LCD backlight ON/OFF signal output. (H: ON, L: OFF)
85
P_DOWN OUT
O
MD/TC power control signal output. (H: POW ON, L: STANDBY)
86
VOL_ENC_A
I
TA Volume encoder (A) signal input.
87
VOL_ENC_B
I
TA Volume encoder (B) signal input.
88
SIRCS
I
RM SIRCS signal input.
89
KEY0
I
KEY A/D input. (For ST)
90
KEY1
I
KEY A/D input. (For ST)
91
KEY2
I
KEY A/D input. (For TA)
92
KEY3
I
KEY A/D input. (For CDP)
93
NC
—
Not used.
94
NC
I
Not used (pull up).
95
CDM_SW
I
CD Loading switch input.
96
AD_GND
—
Analog ground.
97
DISTINATION
I
Distination signal input.
98
VREF
—
Analog Reference Voltage.
99
AVCC
—
Analog Power Supply.
100
NC
—
Not used.
INH
A
B
SEL
L
L
L
0
L
H
L
1
L
L
H
2
L
H
H
3
X
X
H
NONE
10
World of Free Manuals
Function
FUNC
AUX (H)
AUX (L)
TAPE
GND
NONE