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

 

 

 

 

– 66 –

Page 52
Image 52
Sony MDS-SD1 service manual Chak-In