Sony ICD-PX312 / ICD-PX312D / ICD-PX312F / ICD-PX312 M / ICD-PX312M (serv.man2) Service Manual ▷ View online
ICD-PX312/PX312D/PX312F/PX312M
29
• IC Pin Function Description
MAIN BOARD (1/6) IC104 LC823425-12G-H (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Description
1
BMODE0
—
Boot mode select terminal
2
BMODE1
—
Boot mode select terminal
3
EXTFIQ/GPIO2A
I
Interrupt signal input from VBUS detect
4
VSS
—
Ground terminal
5
EXTINT00/GPIO2B
I
Interrupt signal input from Key detect
6
EXTINT01/GPIO2C
I
Interrupt signal input from Low battery detect
7
EXTINT02/GPIO2D
I
Interrupt signal input from MS/SD card detect
8
EXTINT03/GPIO2E
I
Interrupt signal input from Key (DPC) detect
9
EXTINT04/GPIO2F
O
Headphone muting signal output
10
VDD2
—
Power supply terminal (+3.1V)
11
VSS
—
Ground terminal
12
SDCD1/GPIO20
I
SD card detect signal input
13
SDWP1/INS/GPIO21
O
SD card power control signal output
14
SDCMD1/BS/GPIO23
O
SD CMD/MS BS signal output
15
SDAT10/DATA0/
GPIO24
I/O
SD/MS data bit0 input/output
16
SDAT11/DATA1/
GPIO25
I/O
SD/MS data bit1 input/output
17
VDDSD1
—
Power supply terminal (+3.1V)
18
SDAT12/DATA2/
GPIO26
I/O
SD/MS data bit2 input/output
19
SDAT13/DATA3/
GPIO27
I/O
SD/MS data bit3 input/output
20
SDCLK1/SCLK/
GPIO22
O
SD/MS clock output
21
VSS
—
Ground terminal
22
VDD1
—
Power supply terminal (+1V)
23
SDCLK0
O
FLASH Memory clock output
24
SDCMD0
O
FLASH Memory command data output
25
SDAT00
I/O
FLASH Memory data bit0 input/output
26
SDAT01
I/O
FLASH Memory data bit1 input/output
27
VDDSD0
—
Power supply terminal (+3.1V)
28
SDAT02
I/O
FLASH Memory data bit2 input/output
29
SDAT03
I/O
FLASH Memory data bit3 input/output
30
SDCD0/GPIO29
—
Not used. (Open)
31
SDWP0/GPIO28
O
POWER control signal output
32
VSS
—
Ground terminal
33
AVDDUSBPHY1
—
Power supply terminal (+1V)
34
AVSSUSBPHY
—
Ground terminal
35
AVSSUSBPHY
—
Ground terminal
36
USBDDM
I/O
USB port serial data input/output
37
USBDDP
I/O
USB port serial data input/output
38
AVDDUSBPHY2
—
Power supply terminal (+3.1V)
39
AVSSUSBPHY
—
Ground terminal
40
AVSSUSBPHY
—
Ground terminal
41
USBDEXT12
—
USB-PHY reference resister terminal
42
AVDDUSBPHY2
—
Power supply terminal (+3.1V)
43
AVDDUSBPHY1
—
Power supply terminal (+1V)
44
AVSSUSBPHY
—
Ground terminal
45
VDDXT1
—
Power supply terminal (+1V)
46
XOUT1
O
Crystal output for main clock (48MHz)
47
VSSXT1
—
Ground terminal
48
XIN1
I
Crystal input for main clock (48MHz)
49
AVDDPLL1
—
Power supply terminal (+1V)
50
VCNT1
I
PLL1 VCO control signal input
51
AVSSPLL1
—
Ground terminal
52
VDD2
—
Power supply terminal (+3.1V)
ICD-PX312/PX312D/PX312F/PX312M
30
Pin No.
Pin Name
I/O
Description
53
TCLKA/GPIO00/
MPMCADDR11/
EXTINT10
I
HOLD switch signal input
54
TCLKB/GPIO01/
MPMCADDR12/
EXTINT11
I
POWER switch signal input
55
PHI/GPIO06/
EXTINT16
O
TUNER 32kHz clock output
56
RTCK
—
Not used. (Open)
57
TDO
—
Not used. (Open)
58
VSS
—
Ground terminal
59
NTRST
I
System reset signal input
60
VDD1
—
Power supply terminal (+1V)
61
NRES
I
System reset signal input
62
TDI
—
Not used. (Open)
63
TMS
—
Not used. (Open)
64
TCK
—
Not used. (Open)
65
VSS
—
Ground terminal
66
VDD2
—
Power supply terminal (+3.1V)
67
VDDRTS
—
Power supply terminal (+1V)
68
XIN32K
I
Crystal input for sub clock (32.768kHz)
69
VSSRTS
—
Ground terminal
70
XOUT32K
O
Crystal output for sub clock (32.768kHz)
71
VDET
I
RTC power detect signal input
72
RTCINT
O
RTC interrupt signal output
73
BACKUPB
I
BACKUP signal input
74
VDD1
—
Power supply terminal (+1V)
75
VSS
—
Ground terminal
76
VDD2
—
Power supply terminal (+3.1V)
77
TEST
—
Not used. (Connected to ground.)
78
BMODE2
—
Boot mode select terminal
79
SCL/GPIO07/
EXTINT17
O
I2C clock output to TUNER/CODEC
80
VSS
—
Ground terminal
81
SDA/GPIO08/
EXTINT18
I/O
I2C data input/output to TUNER/CODEC
82
MCLK/GPIO18
O
Master clock output
83
BCK/GPIO19
O
Bit clock output to CODEC
84
VSS
—
Ground terminal
85
VDD2
—
Power supply terminal (+3.1V)
86
LRCK/GPIO1A
O
Channel clock output
87
DIN/GPIO1B
I
Audio serial data input
88
DOUT/GPIO1C
O
Audio serial data output
89
TIOCA0/GPIO09/
EXTINT19
O
ZLOAD control signal output Not used. (Open)
90
TIOCA1/GPIO0A/
EXTINT1A
O
LCD Back light control signal output Not used. (Open)
91
VDD2
—
Power supply terminal (+3.1V)
92
VSS
—
Ground terminal
93
TXD1/GPIO04/
EXTINT14
O
OPT LED (RED) drive control signal output
94
RXD1/GPIO05/
EXTINT15
O
OPT LED (GRN) drive control signal output
95
VDD1
—
Power supply terminal (+1V)
96
TIOCB0/GPIO02/
DMCK0/EXTINT12
I
Headphone detect signal input
97
TIOCB1/GPIO03/
DMDIN/EXTINT13
O
ZLOAD control signal output Not used. (Open)
98
SCK0/GPIO1D
O
LCD serial clock output
99
SDI0/GPIO1E
O
TUNER/CODEC reset signal output
100
VSS
—
Ground terminal
101
SDO0/GPIO1F
O
LCD serial data output
ICD-PX312/PX312D/PX312F/PX312M
31
Pin No.
Pin Name
I/O
Description
102
SCK1/GPIO0D/
EXTINT1D
O
POWER control signal output
103
SDI1/GPIO0E/
EXTINT1E
O
LCD chip select signal output
104
SDO1/GPIO0F/
EXTINT1F
O
LCD A0 data output
105
TXD2/GPIO0B/
EXTINT1B
O
Charge enable clock output Not used. (Open)
106
RXD2/GPIO0C/
EXTINT1C
I
EXT MIC detect signal input
107
VDD2
—
Power supply terminal (+3.1V)
108
VSS
—
Ground terminal
109
AVSSDAMPR
—
Ground terminal
110
ROUT
O
DAMP R-CH signal output Not used. (Open)
111
AVDDDAMPR
—
Power supply terminal (+1V)
112
AVDDDAMPL
—
Power supply terminal (+1V)
113
LOUT
O
DAMP L-CH signal output Not used. (Open)
114
AVSSDAMPL
—
Ground terminal
115
AVSSPLL2
—
Ground terminal
116
VCNT2
I
PLL2 VCO control signal input
117
AVDDPLL2
—
Power supply terminal (+3.1V)
118
VSS
—
Ground terminal
119
VDD1
—
Power supply terminal (+1V)
120
AVDDADC
—
Power supply terminal (+3.1V)
121
AN5
I
Not used. (Open)
122
AN4
I
Not used. (Open)
123
AN3
I
Not used. (Open)
124
AN2
I
Battery level input
125
AN1
I
KEY1 AD signal input
126
AN0
I
KEY0 AD signal input
127
AVSSADC
—
Ground terminal
128
VDD2
—
Power supply terminal (+3.1V)
ICD-PX312/PX312D/PX312F/PX312M
32
MAIN BOARD (3/6) IC301 AK4953AEN-L (DIGITAL AUDIO CODEC, AMP)
Pin No.
Pin Name
I/O
Description
1
MPWR1
O
MIC Power supply output
2
LIN1/DMDAT
I
INT MIC L-CH Analog signal input
3
RIN/MCLK
I
INT MIC R-CH Analog signal input Not used. (Open)
4
PDN
I
Reset signal input
5
CSN/SDA
I/O
Control serial data input/output
6
CCLK/SCL
I
Control serial clock input
7
CDTIO/CAD0
—
Not used. (connected to ground.)
8
SDTI
I
Audio serial data input
9
LRCK
I/O
Channel clock input/output
10
BICK
I/O
Audio serial data clock input/output
11
SDTO
O
Audio serial data output
12
TVDD
—
Power supply terminal (+3.1V)
13
VSS2
—
Ground terminal
14
MCKI
I
External Master clock input
15
MCKO
—
Not used. (Open)
16
I2C
—
Not used. (Connected to VDD.)
17
SVDD
—
Power supply terminal (+3V)
18
VSS4
—
Ground terminal
19
SPN
O
Speaker-AMP output
20
SPP
O
Speaker-AMP output
21
DVDD
—
Power supply terminal (+1.8V)
22
HPL
O
Headphone-AMP output
23
HPR
O
Headphone-AMP output
24
PVEE
O
Charge-Pump circuit negative voltage output
25
VSS3
—
Ground terminal
26
CP
O
Charge-Pump capacitor terminal
27
CN
I
Charge-Pump capacitor terminal
28
AVDD
—
Power supply terminal (+2.9V)
29
VSS1
—
Ground terminal
30
REGFIL
O
Regulator ripple fi lter terminal
31
VCOM
O
Common voltage output
32
LIN3
I
Tuner L-CH Analog signal input
33
RIN3
I
Tuner R-CH Analog signal input
34
LIN2
I
EXT MIC L-CH Analog signal input
35
RIN2
I
EXT MIC R-CH Analog signal input
36
MPWR2
O
MIC Power supply outout
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