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73

Pin No.

Pin Name

I/O

Description

89

FRDR

O

Focus servo drive PWM signal (–) output to the BH6511FS (IC152)

90

FS4

O

Clock signal (176.4 kHz) output terminal (X’tal system)    Not used (open)

91

SRDR

O

Sled servo drive PWM signal (–) output to the BH6511FS (IC152)

92

SFDR

O

Sled servo drive PWM signal (+) output to the BH6511FS (IC152)

93

SPRD

O

Spindle servo drive PWM signal (–) output to the BH6511FS (IC152)

94

SPFD

O

Spindle servo drive PWM signal (+) output to the BH6511FS (IC152)

95

FGIN

I (S)

FG signal input terminal    Not used (fixed at “L”)

96

TEST1

I

97

TEST2

I

Input terminal for the test (fixed at “L”)

98

TEST3

I

99

DVSS

—

Ground terminal (digital system)

100

EFMO

O

EFM signal output to the overwrite head driver (IC181) when recording mode

* I (S) stands for schmitt input, I (A) for analog input, O (3) for 3-state output, and O (A) for analog output in the column I/O.

74

Pin No.

Pin Name

I/O

Description

1

WMOUT

O

Serial data output to the equipment connected to other unit    Not used (open)

2

WMCLK

I

Serial data transfer clock signal input from the equipment connected to other unit
Not used (fixed at “L”)

3

LEVEL-L

O

Left channel level output to the master controller (IC501)

4

LEVEL-R

O

Right channel level output to the master controller (IC501)

5

LEDDATA

O

Serial data output terminal for the LED driver    Not used (open)

6

—

O

Not used (open)

7

LEDCLK

O

Serial data transfer clock signal output terminal for the LED driver    Not used (open)

8

BYTE

I

External data bus line byte selection signal input    “L”: 16 bit, “H”: 8 bit (fixed at “L”)

9

CNVSS

—

Ground terminal

10

XIN-T

I

Sub system clock input terminal (32.768 kHz)    Not used (fixed at “L”)

11

XOUT-T

O

Sub system clock output terminal (32.768 kHz)    Not used (open)

12

S.RST

I

System reset signal input from the reset signal generator (IC931)    “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”

13

XOUT

O

Main system clock output terminal (10 MHz)

14

GND

—

Ground terminal

15

XIN

I

Main system clock input terminal (10 MHz)

16

3.3V

—

Power supply terminal (+3.3V)

17

NMI

I

Non-maskable interrupt input terminal (fixed at “H” in this set)

18

P.DOWN

I

Power down detection signal input terminal    “L”: power down, normally: “H”

19

WMSYNC

I

Sync signal input from the equipment connected to other unit    Not used (fixed at “L”)

20

I2CBUSY

O

Busy signal output for the I2C bus    “L” active    Not used (pull up)

21

L3CLK

O

L3 bus data transfer clock signal output to the A/D, D/A converter (IC201)

22

L3DATA

O

L3 bus data output to the A/D, D/A converter (IC201)

23

—

O

Not used (open)

24

ELEUP

O

Mini-disc elevator up/down motor control signal output terminal
“H” active    Not used (open)

25

—

O

Not used (open)

26

ELEDOWN

O

Mini-disc elevator up/down motor control signal output terminal
“H” active    Not used (open)

27

SQSY

I

Subcode Q sync (SCOR) input from the CXD2654R (IC121)
“L” is input every 13.3 msec    Almost all, “H” is input

28

RESET SW

I

Reset switch input terminal    “L”: reset    Not used (fixed at “L”)

29

I2CCLK

I/O

Shift clock signal input/output terminal for the I2C bus

30

I2CDATA

I/O

Serial data input/output terminal for the I2C bus

31

FLDATA

O

Display serial data output terminal    Not used (open)

32

—

O

Not used (open)

33

FLCLK

O

Display serial data transfer clock signal output terminal    Not used (open)

34

FLCS

O

Display serial chip select signal output terminal    “L” active    Not used (open)

35

SWDT

O

Writing data output to the CXD2654R (IC121)

36

SRDT

I

Reading data input from the CXD2654R (IC121)

37

SCLK

O

Serial clock signal output to the CXD2654R (IC121)

38

OPTSEL0

O

Selection signal output for the optical input signal    Not used (open)

39

SENSOR

I

Elevator position detect sensor input terminal    Not used (fixed at “L”)

40

SENSOR2

I

Elevator position detect sensor input terminal    Not used (fixed at “L”)

41

HEADDOWN

O

Over write head up/down motor control signal output terminal
“H” active    Not used (open)

75

Pin No.

Pin Name

I/O

Description

42

HEADUP

O

Over write head up/down motor control signal output terminal
“H” active    Not used (open)

43

JOG0

I

Jog dial pulse input terminal    (A phase input)    Not used (open)

44

JOG1

I

Jog dial pulse input terminal    (B phase input)    Not used (open)

45

WMINV

O

Clock signal phase inversion control signal output to the equipment connected to other unit
Not used (open)

46

LEDLAT

O

Serial data latch pulse output to the LED driver    “L” active    Not used (pull down)

47

OPTSEL1

O

Selection signal output terminal for digital signal    Not used (open)

48

DARST

O

Reset signal output terminal    “L”: reset    Not used (open)

49

MUTE

O

Audio line muting control signal output terminal    “L”: line muting on
Not used (open)

50

STB

O

Power control strobe signal output for the external device
“L”: standby mode, “H”: power on    Not used (open)

51

CHACK-IN

I

Detection input from the disc loading in detect switch (S573)
“L”: disc chucking, others: “H”    Not used

52

HOME

I

Detection input from the elevator home position detect switch
“L”: home position, others: “H”    Not used (fixed at “L”)

53

PACK-OUT

I

Detection input from the disc loading out detect switch (S602)
“L”: loading out position, others: “H”

54

LDIN

O

Mini-disc loading motor control signal output to the motor driver (IC153)
“H” active    *1

55

LDOUT

O

Mini-disc loading motor control signal output to the motor driver (IC153)
“H” active    *1

56

LD-LOW

I

The loading motor drive voltage control signal output to the motor driver (IC153)
“H” active    Not used (open)

57

LDON

O

Laser diode on/off control signal output to the automatic power control circuit    “H”: laser on

58

REFLECT

I

Detection input from the disc reflection rate detect switch (S102-1)
“L”: high reflection rate disc, “H”: low reflection rate disc

59

PROTECT

I

Rec-proof claw detect input from the protect detect switch (S102-2)    “H”: write protect

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

LIMIT-IN

I

Detection input from the sled limit-in detect switch (S101)
The optical pick-up is inner position when “L”

64

GND

—

Ground terminal

Laser modulation select signal output to the HF module switch circuit

Playback power: “H”, Stop: “L”,

Recording power:

65

MOD

O

2 sec

0.5 sec

*1  Mini-disc loading motor (M903) control

Loading

Eject

Stop

Brake

LDIN (pin tf)

“H”

“L”

“L”

“H”

LDOUT (pin tg)

“L”

“H”

“L”

“H”

Terminal

Mode

76

Pin No.

Pin Name

I/O

Description

66

XLATCH

O

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

67

WRPWR

O

Laser power select signal output to the CXD2654R (IC121) and HF module switch circuit
“L”: playback mode, “H”: recording mode

68

LOADING

SEL: L

I

Setting terminal for the loading control method
“H”: not used IN switch (fixed at “L”)

69

L3MODE

O

L3 bus mode control signal output to the A/D, D/A converter (IC201)

70, 71

—

I

Not used (fixed at “H”)

72

SCTX

O

Recording data output enable signal output to the CXD2654R (IC121) and over write head driver 
(IC181)    Writing data transmission timing output (Also serves as the magnetic head on/off 
output)

73

XINT

I

Interrupt status input from the CXD2654R (IC121)

74

REC-P

O

Detection input from the recording position detect switch (S601)    “L”: recording position

75

DQSY

I

Digital In U-bit CD format subcode Q sync (SCOR) input from the CXD2654R (IC121)
“L” is input every 13.3 msec    Almost all, “H” is input

76

—

I

Not used (open)

77

DIGRST

O

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

78

SENS

I

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

79

MNT3

I

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

80

MNT2

I

Busy signal input from the CXD2654R (IC121)

81

MNT1

I

Track jump detection signal input from the CXD2654R (IC121)

82

MNT0

I

Focus OK signal input from the CXD2654R (IC121)
“H” is input when focus is on (“L”: NG)

83

SENSOR SW

O

Control signal output for the sensor gain selection    Not used (fixed at “L”)

84

DISK5

I

Detection input from the disc detect switch    “L”: disc is set    Not used (fixed at “L”)

85

DISK1

I

Detection input from the disc detect switch    “L”: disc is set    Not used (fixed at “L”)

86

DISK2

I

Detection input from the disc detect switch    “L”: disc is set    Not used (fixed at “L”)

87

SCL

O

Serial clock signal output to the EEPROM (IC171)

88

SDA

I/O

Two-way data bus with the EEPROM (IC171)

89

DISK4

I

Detection input from the disc detect switch    “L”: disc is set    Not used (fixed at “L”)

90

DISK3

I

Detection input from the disc detect switch    “L”: disc is set    Not used (fixed at “L”)

91

HEADSW-

DOWN

I

Detection input from the over write head down position detect switch
“L”: down position    Not used (fixed at “L”)

92

HEADSW-UP

I

Detection input from the over write head up position detect switch
“L”: up position    Not used (fixed at “L”)

93 to 95

KEY3 to KEY1

I

Key input terminal (A/D input)    Not used (fixed at “H”)

96

AVSS

—

Ground terminal (for A/D converter)

97

KEY0

I

Key input terminal (A/D input)    Not used (fixed at “H”)

98

VREF

I

Reference voltage (+3.3V) input terminal (for A/D converter)

99

+3.3V

—

Power supply terminal (+3.3V)

100

WMIN

I

Serial data input from the equipment connected to other unit    Not used (fixed at “L”)