Continued from preceding page.

No. 5223-8/34

LC78621E

Pin No.

Symbol

I/O

Function

42

LRSY

O

Left/right clock output

43

CK2

O

Bit clock output

Inverted polarity clock output

ROMXA application

(after reset)

(during CK2CON mode)

44

ROMXA

O

output signals

Interpolation data output

ROM data output

(after reset)

(During ROMXA mode)

45

C2F

O

C2 flag output

46

MUTEL

O

Left channel mute output

47

Left channel power supply.

48

LCHP

O

Left channel P output

49

LCHN

O

Left channel N output

50

One-bit D/A converter

Left channel ground. Normally 0 V.

51

Right channel ground. Normally 0 V.

52

RCHN

O

Right channel N output

53

RCHP

O

Right channel P output

54

Right channel power supply.

55

MUTER

O

Right channel mute output

56

DOUT

O

Digital output

57

SBSY

O

Subcode block synchronization signal

58

EFLG

O

C1, C2, single and double error correction monitor pin

59

PW

O

Subcode P, Q, R, S, T, U, V and W output

60

SFSY

O

Subcode frame synchronization signal output. This signal falls when the subcodes are in the standby state.

61

SBCK

I

Subcode readout clock input. This is a Schmitt input. (Must be tied low when unused.)

62

FSX

O

Output for the 7.35 kHz synchronization signal divided from the crystal oscillator

63

WRQ

O

Subcode Q output standby output

64

RWC

I

Read/write control input. This is a Schmitt input.

65

SQOUT

O

Subcode Q output

66

COIN

I

Command input from the control microprocessor

67

CQCK

I

Input for both the command input acquisition clock and the SQOUT pin subcode readout clock input. This is a Schmitt input.

68

RES

I

Chip reset input. This pin must be set low briefly after power is first applied.

69

TST11

O

Test output. Leave open. (Normally outputs a low level.)

70

LASER

O

Laser on/off output. Controlled by serial data commands from the control microprocessor.

71

16M

O

16.9344 MHz output.

72

4.2M

O

4.2336 MHz output

73

CONT

O

Supplementary control output. Controlled by serial data commands from the control microprocessor.

74

TEST5

I

Test input. A pull-down resistor is built in.

75

CS

I

Chip select input. A pull-down resistor is built in.

76

Crystal oscillator ground. Normally 0 V.

77

I

Connections for a 16.9344 MHz crystal oscillator.

78

O

79

Crystal oscillator power supply.

80

TEST1

I

Test input. A pull-down resistor is built in.