CD-XP700H (serv.man15). Function table of IC - Sharp Audio Service Manual (repair manual). Page 5

– 46 –

51

DVDD4

Input

I/O digital supply pin.

52

VSS

—

GND ground pin.

53

MADRS7

Output

DRAM address output 7.

54

MADRS6

Output

DRAM address output 6.

55

MADRS5

Output

DRAM address output 5.

56

MADRS4

Output

DRAM address output 4.

57

MADRS3

Output

DRAM address output 3.

58

MADRS2

Output

DRAM address output 2.

59

MADRS1

Output

DRAM address output 1.

60

MADRS0

Output

DRAM address output 0.

61

DVDD5

Input

Internal logic supply pin.

62

VSS

—

GND ground pin.

63*

STREQ

Input/Output

MP3 data demand flag output. (H-active)/DRAM data demand flag input. (H-active)

64*

STCK

Input/Output

MP3 data transfer clock input./DRAM data transfer clock output.

65*

STDAT

Input/Output

MP3 data serial input./DRAM data serial output.

66

FSYNC

Output

MP3 frame synchronization signal. (H-active)

67*

CRCF

Output

CDROM-CRC flag output. (H-active)/DRAM data output enable signal output. (H-active)

68

DVDD6

Input

I/O digital supply pin.

69

VSS

—

GND ground pin.

70*

WOK

Input

DRAM write permit input. (CD-DA, H-active)/DRAM data demand flag input.
(CDROM, H-active)

71*

CNTOK

Output

Data connection point detection completion flag. (CD-DA, H-active)/DRAM data serial
output. (CDROM, H-active)

72*

OVF

Output

DRAM write interrupt flag. (CD-DA, H-active)/DRAM data transfer clock output.
(CDROM, H-active)

73

CMDOUT

Output

Command serial data output. (Nch open drain output pin)

74

CMDIN

Input

Command serial data input.

75

CL

Input

Command serial clock input.

76

CE

Input

Command enable input. (H-active)

77

INTB

Output

Interrupt signal output. (L-active)

78

RESB

Input

System reset. (L-active)

79

DATAIN

Input

CD serial data input.

80

DATACK

Input

CD bit clock input.

In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.

*1: Unused port

Unused input pin must always be connected to GND (0 V).
Unused output pin must be left open.
Unused I/O pin must either be connected to GND (0 V) or set to the output and left open.

*2: Be sure to supply the same potential to DVDD1, DVDD3, DVDD4, DVDD6 and AVDD.

Power supply to DVDD2 and DVDD5 must always be lower than that for DVDD1.

*3: Be sure to connect input pins TEST1 and TEST2 to GND (0 V).
*4: I/O pins (MDATA0 to 15, STREQ, STCK, STDAT) are in the input mode during initialization.
*5: At power ON, be sure to set the RESB pin to "L" (1 

µ

s or more).

*6: It is necessary to supply to the CKIN pin the 16.9344 MHz clock from LSI for CD-DSP.

The oscillator circuit cannot be made up from this LSI and oscillator only.