Read Sony CMT-PX333 / HCD-PX333 Service Manual online
86
HCD-PX333
Pin No.
Pin Name
I/O
Description
31
C2-PWM-B
O
Not used (open)
32
XINT
I
Interrupt status input from the CXD2662R (IC151)
33
—
O
Not used (open)
34
XELT
I
Not used (open)
35
WR-PWR
O
Laser power select signal output to the CXD2662R (IC151) and HF module switch circuit
“L”: playback mode, “H”: recording mode
“L”: playback mode, “H”: recording mode
36
I2CCLK
I/O
Shift clock signal input/output terminal for the IIC bus
37
I2CDAT
I/O
Data input/output terminal for the IIC bus
38
SWDT
O
Writing data output to the CXD2662R (IC151)
39
VCC1
—
Power supply terminal (+3.3V)
40
SRDT
I
Reading data input from the CXD2662R (IC151)
41
VSS1
—
Ground terminal
42
SCLK
O
Serial clock signal output to the CXD2662R (IC151)
43
REC-SW
I
Detection input from the recording position of over write head (HR901) detect switch (S105)
“L” recording mode
“L” recording mode
44
CLIPDTO
O
Serial data output terminal
45
CLIPDTI
I
Serial data input terminal
46
CLIPCK
O
Serial clock signal output terminal Not used (open)
47
DIG-RST
O
Reset signal output to the CXD2662R (IC151) and BH6519FS (IC141) “L”: reset
48
SENS
I
Internal status (SENSE) input from the CXD2662R (IC151)
49
PLAY-SW
I
Detection input from the playback position of slider (eject) detect switch (S104)
“L” playback mode
50
XLAT
O
Serial data latch pulse signal output to the CXD2662R (IC151)
51
OUT-SW
I
Detection input from the loading-out detect switch (S103)
“L” at a load-out position, others: “H”
“L” at a load-out position, others: “H”
52
—
I
Not used (open)
53
—
O
Not used (open)
54
—
I
Not used (open)
55
—
O
Not used (open)
56
MNT2 (XBUSY)
I
Busy signal input from the CXD2662R (IC151)
57
VSS2
—
Ground terminal
58
MNT1 (SHOCK)
I
Track jump detection signal input from the CXD2662R (IC151)
59
VCC2
—
Power supply terminal (+3.3V)
60
EEP-WP
O
Writing protect signal output to the EEPROM (IC195)
61
SDA
I/O
Two-way data bus with the EEPROM (IC195)
62
BCLK/ALE/CLKO
O
Not used (open)
63
OE
O
Data reading strobe signal output Not used (open)
64
BHE/CASH
O
Not used (open)
65
WE
O
Writing enable signal output Not used (open)
66
SCL
O
Clock signal output to the EEPROM (IC195)
67
REFLECT
I
Detection input from the disc reflection rate detect switch (S102-1)
“L”: high reflection rate disc, “H”: low reflection rate disc
“L”: high reflection rate disc, “H”: low reflection rate disc
68
PROTECT
I
REC-proof claw detect input from the protect detect switch (S102-2) “H”: write protect
69
CS0
O
Chip select signal output Not used (open)
70
CS1
O
Chip select signal output terminal Not used (open)
71. 72
—
—
Not used (open)
73
A19
O
Address signal output Not used (open)
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