CDX-656, CDX-656X - Sony Car Audio Service Manual (repair manual). Page 31

31

Pin No.

Pin Name

I/O

Description

52

SCOR

I

Subcode sync (S0+S1) detection signal input from the CXD3017Q

53

GRSCOR

I

Subcode sync (S0+S1) detection signal input terminal    Not used

54

NC

O

Not used

55

HS

O

Normal/high speed playback control signal output terminal
“L”: high speed playback    Not used

56

SQSO

I

Subcode Q data input from the CXD3017Q

57

NC

O

Not used

58

SQCK

O

Subcode Q data reading clock signal output to the CXD3017Q

59

CDCLK

O

Serial data transfer clock signal output to the CXD3017Q

60

CDLAT

O

Serial data latch pulse signal output to the CXD3017Q

61

CDDAT

O

Serial data output to the CXD3017Q

62

XRST

O

System reset signal output to the CXD3017Q    “L”: reset

63

XQOK

O

Subcode Q OK pulse signal output terminal    Not used

64

XRDE

O

D-RAM read enable signal output terminal    Not used

65

XWRE

O

D-RAM write enable signal output terminal    Not used

66

EMPH

O

Emphasis control signal output    “H”: emphasis on

67

MUTE

O

Audio line muting on/off control signal output    “H”: muting on

68

RAMA10

O

Address signal output terminal    Not used

69

RAMCS

O

Chip select enable output terminal    Not used

70 to 74

RAMIO7 to 

RAMIO3

I/O

Two-way data bus terminal    Not used

75

RESET

I

System reset signal input from the SONY bus interface and reset signal generator    “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”

76

RAMIO2

I/O

Two-way data bus terminal    Not used

77

X1A

O

Sub system clock output terminal    Not used

78

X0A

I

Sub system clock input terminal    Not used

79

VSS

—

Ground terminal

80

X0

I

Main system clock input terminal (4 MHz)

81

X1

O

Main system clock output terminal (4 MHz)

82

VCC

—

Power supply terminal (+3.3V)

83, 84

RAMIO1, 

RAMIO0

I/O

Two-way data bus terminal    Not used

85 to 88

RAMA0 to 

RAMA3

O

Address signal output terminal    Not used

89

SINGLE

I

Setting terminal for the single disc/multiple discs mode
“L”: single disc mode, “H”: multiple discs mode    fixed at “H”

90

6/10 SEL

I

Setting terminal for the 6 discs changer/10 discs changer model
“L”: 10 discs changer model, “H”: 6 discs changer model    Not used

91

CFSEL

I

Custom file on/off setting terminal    “L”: custom file on    fixed at “H”

92

TEXTSEL

I

CD text mode setting terminal
“L”: CD text on, “H”: does not display track name    fixed at “H”

93

ESPSEL

I

ESP mode setting terminal    “L”: ESP on    Not used

94

TEST

I

Test on/off setting terminal    “L”: test mode    Nomally fixed at “H”

95

MAG SW

I

Magazine in/out detect switch input terminal    Not used

96

SAVE SW

I

Save end detect switch input terminal
“L”: When completion of the disc save operation