Sony 4-216-840-0 Stb, Chack, Ldin, Ld-Low, Rec-P, Rec/Pb, Sda, Wr-Pwr, Reflect, Scl, Sctx, LED0

Pin No.

Pin Name

I/O

Description

50

STB

O

Relay drive signal output for the power on/off “L”: standby mode, “H”: relay on

51

CHACK IN

I

Detection input from the disc chucking-in detect switch “L”: chucking

Not used (fixed at “H”)

52

NC

O

Not used (open)

53

PACK-OUT

I

Detection input from the loading-out detect switch (S602)

“L” at a load-out position, others: “H”

54

LDIN

O

Motor control signal output to the loading motor driver (IC441)

“L” active

*1

55

LDOUT

O

Motor control signal output to the loading motor driver (IC441)

“L” active

*1

56

LD-LOW

O

Loading motor drive voltage control signal output for the loading motor driver (IC441)

“H” active

57, 58

NC

O

Not used (open)

59

REC-P

I

Detection input from the recording position detect switch (S601)

“L” active

60

PB-P

I

Detection input from the playback position detect switch (S604)

“L” active

61

REC/PB

O

Not used (open)

62

+3.3V

—

Power supply terminal (+3.3V)

63

NC

O

Not used (open)

64

GND

—

Ground terminal

65

SDA

I/O

Two-way data bus with the EEPROM (IC171)

66

MNT3 (SLOCK)

I

Spindle servo lock status monitor signal input from the CXD2654R (IC121)

67

WR-PWR

O

Laser power select signal output to the CXD2654R (IC121) and HF module switch circuit

“L”: playback mode, “H”: recording mode

68

PROTECT

I

Rec-proof claw detect input from the protect detect switch (S102)

“H”: write protect

69

REFLECT

I

Detection input from the disc reflection rate detect switch (S102)

“L”: high reflection rate disc, “H”: low reflection rate disc

70

LDON

O

Laser diode on/off control signal output to the automatic power control circuit

“H”: laser on

71

SENS

I

Internal status (SENSE) input from the CXD2654R (IC121)

72

MNT1 (SHOCK)

I

Track jump detection signal input from the CXD2654R (IC121)

73

DIG-RST

O

Reset signal output to the CXD2654R (IC121) and BH6511FS (IC152) “L”: reset

74

MNT2 (XBUSY)

I

Busy signal input from the CXD2654R (IC121)

75

XLATCH

O

Serial data latch pulse signal output to the CXD2654R (IC121)

Laser modulation select signal output to the HF module switch circuit

Playback power: “H”, Stop: “L”,

Recording power:

0.5 sec

76

MOD

O

2 sec

77

LIMIT-IN

I

Detection input from the sled limit-in detect switch (S101)

The optical pick-up is inner position when “L”

78

MNT0 (FOK)

I

Focus OK signal input from the CXD2654R (IC121)

“H” is input when focus is on (“L”: NG)

*1 Loading motor (M103) control

Mode

LOADING

EJECT

BRAKE

RUN IDLE

Terminal

LDIN (pin %¢)

“L”

“H”

“L”

“H”

LDOUT (pin %°)

“H”

“L”

“L”

“H”

Pin No.	Pin Name		I/O		Description
79		SCL	O	Clock signal output to the EEPROM (IC171)
80		SCTX	O	Recording data output enable signal output to the CXD2654R (IC121) and overwrite head
				driver (IC181) Writing data transmission timing output (Also serves as the magnetic head on/off
				output)
81	CLOCK SET0		I	Destination setting terminal
				(US and Canadian models: fixed at “L”, AEP, UK and E models: fixed at “H”)
82	CLOCK SET1		I	Destination setting terminal
				(US and Canadian models: fixed at “H”, AEP, UK and E models: fixed at “L”)
83		LED0	O	LED drive signal output of the r REC indicator (D741)		“L”: LED on
84		LED1	O	LED drive signal output of the á indicator (D742) “L”: LED on
85	OPT SEL0		O	Not used (open)
86	OPT SEL1		O	Not used (open)
87	MODEL SEL0		I	Setting terminal for the model (fixed at “H” in this set)
88	MODEL SEL1		I	Setting terminal for the model (Not used (open))
89		REC	O	Not used (open)
90	BEEP SW		I	BEEP switch input terminal “L”: beep off, “H”: beep on		Not used
91		NC	O	Not used (open)
92		SOURCE	I	INPUT switch (S731) input terminal (A/D input) “L”: digital input, “H”: analog input
93		KEY3	I	Key input terminal (A/D input)	Not used (fixed at “H”)
94		KEY2	I	Key input terminal (A/D input)	S721 to S726 (EJECT ¤, PLAY MODE, REPEAT, SCROLL,
				LEVEL/DISPLAY/CHAR, I/ukeys input)
95		KEY1	I	Key input terminal (A/D input)
				S711 to S714 (MENU/NO, YES, PUSH ENTER, CLEAR keys input)
96		AVSS	—	Ground terminal
97		KEY0	I	Key input terminal (A/D input)	S701 to S706 (r REC, p, ), 0, P, á keys input)
98		VREF	I	Reference voltage (+3.3V) input terminal (for A/D converter)
99		+3.3V	—	Power supply terminal (+3.3V) (for analog system )
100	MONO/ST		I	Recording mode switch input terminal “L”: mono, “H”: stereo Not used (open)

– 35 – – 36 –