Yamaha 505 Service Manual download pdf (Page 25)

GX-505/GX-505VCD

GX-505/VCD

IC8 : M38199EF [CD/VCD P.C.B.]

8 bit

µ-COM (CD CPU)

24

Port

P77

AN6

P75

P74

P73

P72

P71

P70

PB3

PB2

P57

P56

P55

P54

P53

P52

P51

P50

P67

P66

P65

P64

P63

P62

P61

P60

P47

P46

INT1

INT4

Pin No.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

Function

Tray table address detect SW

Video out PAL/AUTO/NTSC select detect (GX-505VCD only))

Tray open SW

Tray close SW

Tray table STOP position detect SW

Clamper up SW

Clamper down SW

Focus servo lock

Open

Open

Tracking servo lock

Serial clock to servo LSI

Serial out to servo LSI

Serial in from servo LSI (Q-code or SENSE)

Address/data select signal (GX-505VCD only))

Serial clock from decoder (GX-505VCD only))

Serial out to decoder (GX-505VCD only))

Serial in from decoder (GX-505VCD only))

System communication chip enable

Serial clock from system µ-COM (Auto transfer)

Serial out to system µ-COM

Serial in from system µ-COM

Servo status signal

Not used

Not used

Feed origin SW

Decoder data out OK signal (GX-505VCD only))

Open

Q-code read OK signal

Open

Name

ADR

NTSC

OPSW

/CLSW

/STOP

/UPSW

/DWSW

/FLOCK

/TLOCK

/SCLK

SOUT

SIN

HSEL

/SCLKD

SOD

SID

/CS

/DCLK

DSO

DSI

STAT

/FLSW

/HRDY

BLKCK

81

82

83

84

85

86

87

88

89

90

91

92

93

94

95

96

97

98

99

100

50

49

48

47

46

45

44

43

42

41

40

39

38

37

36

35

34

33

32

31

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

80

79

78

77

76

75

74

73

72

71

70

69

68

67

66

65

64

63

62

61

60

59

58

57

56

55

54

53

52

51

P90/SEG16

P91/SEG17

P92/SEG18

P93/SEG19

P94/SEG20

P95/SEG21

P96/SEG22

P97/SEG23

P30/SEG24

P31/SEG25

P32/SEG26

P33/SEG27

P34/SEG28

P35/SEG29

P36/SEG30

P37/SEG31

P00/SEG32/DIG

0

P01/SEG33/DIG1

P02/SEG34/DIG

2

P03/SEG35/DIG

3

P04/SEG36/DIG

4

P05/SEG37/DIG

5

P06/SEG38/DIG

6

P07/SEG39/DIG

7

P10/SEG40/DIG

8

P11/SEG41/DIG

9

P12/DIG10

P13/DIG11

P14/DIG12

P15/DIG13

P87/SEG15

P86/SEG14

P85/SEG13

P84/SEG12

P83/SEG11

P82/SEG10

P81/SEG9

P80/SEG8

PA7/SEG7

PA6/SEG6

PA5/SEG5

PA4/SEG4

PA3/SEG3

PA2/SEG2

PA1/SEG1

PA0/SEG0

VCC

VEE

AVSS

VREF

P77/AN7

P76/AN6

P75/AN5

P74/AN4

P73/AN3

P72/AN2

P71/AN1

P70/AN0

P57/SRDY3/AN15

P67/SRDY1/CS/SCLK12

P66/SCLK11

P65/SOUT1

P64/SIN1

P63/CNTR1

P62/CNTR0

P61/PWM

P60

P47/T3OUT

P46/T1OUT

P45/INT1/ZCR

P44/INT4

P56/SCLK3/AN14

P55/SOUT3/AN13

P54/SIN3/AN12

P53/SRDY2/AN11

P52/SCLK2/AN10

P51/SOUT2/AN9

P50/SIN2/AN8

PB3

PB2/DA

P16/DIG14

PB0/XC OUT

PB1/XC IN

RESET

P40/INT0

P41

P42/INT2

P43/INT3

P17/DIG15

P20/DIG16

P21/DIG17

P22/DIG18

P23/DIG19

P24

P25

P26

P27

VSS

X OUT

X IN

I/O

I

I

I

I

I

I

I

I

I

O

O

I

O

O

O

I

I

I

O

I

I

I

I

I

■ IC DATA

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