Read Sony ICD-PX312 / ICD-PX312D / ICD-PX312F / ICD-PX312 M / ICD-PX312M (serv.man2) Service Manual online
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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