XR-1300R, XR-2300R, XR-C2300R - Sony Car Audio Service Manual (repair manual). Page 26

26

Pin No.

Pin Name

I/O

Description

36

RE-IN0

I

37

RE-IN1

I

38

DVCC

—

Power supply terminal (+5V) (for D/A converter)

39

DVSS

—

Ground terminal (for D/A converter)

40, 41

NC

O

Not used (open)

42

AVCC

—

Power supply terminal (+5V) (for A/D converter)

43

AVRH

I

Reference voltage (+5V) input terminal (for A/D converter)

44

AVRL

I

Reference voltage (0V) input terminal (for A/D converter)

45

AVSS

—

Ground terminal (for A/D converter)

46

KEYIN0

I

Key input terminal (A/D input) (S901 to S908)
OFF, 3, 4, 5, 6, D-BASS, AF, TA keys input

47

KEYIN1

I

48

RC-IN0

O

Not used (open)    Rotary remote commander key input terminal (A/D input)

49

DSTSEL

I

Destination setting terminal (fixed at “H”)

50

NOISE-DET

I

Noise level detection signal input at SEEK mode (A/D input)

51

NC

O

Not used (open)

52

MTP

I

Multi-path detection signal input from the RDS decoder (IC200)

53

VSM

I

FM and AM signal meter voltage detection input from the FM/AM tuner unit (TU100)
(A/D input)

54

VCC

—

Power supply terminal (+5V)

55

RAMBU

I

Internal RAM reset detection signal input terminal
Input terminal to check that RAM data are not destroyed due to low voltage
This checking is made within 100 msec after reset    Fixed at “L” in this set

56

POW-SEL

I

Power select input terminal       Fixed at “H” in this set

57

NC

O

Not used (open)

58

TESTIN

I

Setting terminal for the test mode    “L”: test mode, Normally: fixed at “H”

59, 60

NC

O

Not used (open)

61, 62

NC

O

Not used

63

VSS

—

Ground terminal

64

NC

O

Not used (open)

65

MUTE

O

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

66, 67

NC

O

Not used (open)

68

AMPMUTE

O

Muting on/off control signal output to the power amplifier (IC500)    “L”: muting on

69

FLASH-W

I

Internal flash memory data write mode detection signal input terminal    “L”: data write mode
Not used (fixed at “H” in this set)

70

I2C-SIO

I/O

Two-way data bus with the RDS decoder (IC200)

71

I2C-CKO

O

Bus clock signal output to the RDS decoder (IC200)

72

RC-IN1

O

Not used (open)    Rotary remote commander shift key input terminal

73

X1A

O

Sub system clock output terminal (32.768 kHz)

74

X0A

I

Sub system clock input terminal (32.768 kHz)

75

DAVN

I

Data transmit completed detect signal input from the RDS decoder (IC200)    “H” active

76

KEYACK

I

Input of acknowledge signal for the key entry    Acknowledge signal is input to accept function
and eject keys in the power off status    On at input of “H”

Dial pulse input of the rotary encoder (RE900)
 (for VOLUME/BASS/TREBLE/BALANCE/FADER control)

Key input terminal (A/D input) (S909 to S920)
2 (XR-1300R), 2 SHUF (XR-C2300R), 1 (XR-1300R), 1 REP (XR-C2300R), ENTER, MODE,
DSPL PTY, SEEK +/– (XR-1300R), SEEK/AMS  + > M  – . m  (XR-C2300R),
PRST +/– (XR-1300R), PRST DISC +/– (XR-C2300R), TUNER (XR-1300R),
SOURCE (XR-C2300R), SOUND, MENU keys input