Read Sony MDS-SD1 Service Manual online
– 66 –
Pin No.
Pin Name
I/O
Function
51
CHAK-IN
I
Detection signal from IN switch
52
HOME
I
Detection signal form HOME switch
53
PACK-OUT
I
Detection signal from OUT switch
54
LDIN
O
Loading motor in control
55
LDOUT
O
Loading motor out control
56
LD-LOW
O
Loading motor voltage control output
57
LDON
O
Laser power ON/OFF
58
REFLECT
I
Disc reflection rate detection
59
PROTECT
I
Disc hole detection
60
PB-P
I
Detection signal from playback position detection switch
61
REC/PB
O
Not used
62
3.3V
–
Power supply 3.3V
63
LIMITIN
I
Detection signal from limit switch
64
GND
–
Ground pin
65
MOD
O
High frequency superimposing ON/OFF output
66
XLAT
O
Latch signal output to serial pulse
67
WRPWR
O
BD light power ON/OFF output
68
LODINGSEL
I
LOADING SELECT input (Fixed at “L”)
69
L3MODE
I
AD/DA MODE signal output
70
MODEL
I
Model selection (Fixed at “H”)
71
DIST
I
Destination selection (Fixed at “H”)
72
SCTX
O
Timing for sending write data to CXD2654
73
XINT
I
CXD2654 interrupt status input
74
REC-P
I
Not used
75
DQSY
I
Digital in sync input
76
NC
O
Not used
77
DIGRST
O
CXD2654, motor driver reset signal
78
SENS
I
Internal status
79
MNT3
I
Spindle servo lock status monitor
80
MNT2
I
Command execution status monitor
81
MNT1
I
Track jump signal
82
MNT0
I
Focus OK signal
83
SENSORSW
O
MAIN SENSOR waveform switching output (Not used)
84
DISK5
I
DISC5 IN SW (Not used)
85
DISK1
I
DISC1 IN SW (Not used)
86
DISK2
I
DISC2 IN SW (Not used)
87
SCL
O
Clock signal to backup memory
88
SDA
I/O
Data signal to backup memory
89
DISK4
I
DISC4 IN SW (Not used)
90
DISK3
I
DISC3 IN SW (Not used)
91
HEADSWDWN
I
Recording head down detection signal (Not used)
92
HEADSWUP
I
Recording head up detection signal (Not used)
93
KEY3
I
Key 3 (A/D) (Not used)
94
KEY2
I
Key 2 (A/D) (Not used)
95
KEY1
I
Key 1 (A/D)
96
AVSS
–
Ground pin
97
KEY0
I
Key 0 (A/D)
98
VREF
–
A/D reference voltage 3.3V
99
3.3V
–
Power supply 3.3V
100
WMCLK
I
MD WM LINK data input
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