Continued from preceding page.

Type: I: Input pin, O: Output pin, B: Bidirectional pin, P: Power supply pin, NC: No connection pin

Note: 1. NC must be left open. Do not connect any signals to these pins.

No. 4852-4/5

LC89512W

Pin No.

Pin

Type

Function

54

RA12

O

55

RA13

O

56

RA14

O

Data buffer RAM address signal outputs

57

RA15

O

58

RA16

O

59

RA17

O

60

P

61

P

62

RESET

I

Reset

63

TEST1

I

64

TEST2

I

Test inputs. These pins should be tied low in normal operation.

65

TEST3

I

66

WFCK

I

67

SBSO

I

Subcode I/O

68

SCOR

I

69

SDATA

I

Serial data input

70

BCK

I

Serial data input clock

71

LRCK

I

44.1 kHz strobe signal input

72

C2PO

I

C2 pointer input

73

RD

I

Microprocessor data read signal input

74

WR

I

Microprocessor data write signal input

75

CS

I

Chip select signal input (from the microprocessor)

76

RS

I

Register selection signal input

77

P

78

SWAIT

O

Sub-CPU wait signal

79

EXCK

O

Sub code I/O

80

MCK

O

Crystal oscillator frequency output

81

TEST0

I

Test inputs. These pins should be tied low in normal operation

.

82

RCS

O

RAM chip select

83

RWE

O

RAM data write signal output

84

ROE

O

RAM data read signal output

85

NC

86

NC

87

NC

88

NC

89

P

90

P

91

DB0

B

SCSI connection

92

DB1

B

SCSI connection

93

P

94

DB2

B

SCSI connection

95

DB3

B

SCSI connection

96

P

97

DB4

B

SCSI connection

98

DB5

B

SCSI connection

99

P

100

DB6

B

SCSI connection

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