XR-C6090R, XR-C6100R - Sony Car Audio Service Manual (repair manual). Page 25

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33

MTLON

I/O

34

CMON

O

Capstan/reel motor (M901) drive signal output terminal    “H”: motor on

35

TAPEON

O

Tape system power supply on/off control signal output terminal    “H”: tape on

36

ACCON

I

Accessory detect signal input terminal    “L”: accessory on

37

PLLSI

I

PLL serial data input from the FM/AM PLL (IC1)

38

BEEP

O

Beep sound output terminal

39

LCDCKO

O

Serial data transfer clock signal output to the liquid crystal display driver (IC901)

40

LCDSO

O

Serial data output to the liquid crystal display driver (IC901)

41

LCDINH

O

Blank indicate control signal output to the liquid crystal display driver (IC901)
“L”: no display

42

LCDCE

O

Chip enable output to the liquid crystal display driver (IC901)

43

UNICKO

O

Serial data transfer clock signal output to the bus interface (IC701) (for SONY bus)

44

UNICKI

I

Serial data reading clock signal input terminal (for SONY bus)

45

UNISI

I

Serial data input from the bus interface (IC701) (for SONY bus)

46

UNISO

O

Serial data output to the bus interface (IC701) (for SONY bus)

47

VDD

—

Power supply terminal (+5V)

48

AVDD

—

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

49

AVREF+

I

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

50

KEYIN1

I

51

KEYIN0

I

52

D-BASS

I

D-BASS switch (SW951) input (A/D input)

53

KEYSEL

I

Setting terminal for the key (fixed at “L”)

54

DSTSEL

I

Destination setting terminal
AEP, UK, South European models: fixed at “L”, German model: fixed at “H”

55

RCIN0

I

Rotary remote commander shift key A/D input terminal

56

VSM1

I

Signal meter voltage detection input terminal    Not used (fixed at “L”)

57

VSM0

I

FM and AM (MW/LW) signal meter voltage detection input from the FM/AM tuner unit (TU1)

58

AVREF–

I

Reference ground terminal

59

AVSS

—

Ground terminal (for A/D converter)

60

GND

—

Ground terminal

61

BUSON

O

Bus on/off control signal output to the bus interface (IC701) (for SONY bus)    “L”: bus on

62

SYSRST

O

Reset signal output to the bus interface (IC701) (for SONY bus)    “L”: reset

63

SEKOUT

O

Seek control signal output to the FM/AM tuner unit (TU1)

64

TUNON

O

Tuner system power supply on/off control signal output to the BA3918 (IC601)    “H”: tuner on

65

FM ON

O

FM system power supply on/off control signal output to the BA3918 (IC601)    “H”: FM on

Key input terminal (A/D input)
XR-C6090R: OFF, SOURCE, MODE 

*, + ) +  SEEK AMS, – = 0 SEEK AMS,

VOLUME –, SEL, VOLUME +, ATT , BTM SENS keys input (LSW901 to LSW910)
XR-C6100R: OFF, SOURCE, MODE 

*, + ) +  SEEK AMS, – = 0 SEEK AMS,

VOLUME –, SEL, VOLUME +, DSPL, ATT, BTM SENS  keys input
(LSW901 to LSW911)

Key input terminal (A/D input)
XR-C6090R: 

6, INTRO 1, REPEAT 2, SHUF/a 3, BL SKIP 6, ATA 5, BANK 4, FILE PTY,

AF/TA, PRESET DISC +/–, DSPL keys input (LSW921 to LSW932)
XR-C6100R: 

6, INTRO 1, REPEAT 2, SHUF/a 3, BL SKIP 6, ATA 5, BANK/MTL 4, FILE

PTY, AF/TA, PRESET DISC +/– keys input (LSW921 to LSW931)

METAL control in/out terminal
At initial mode: valid/invalid selection input of METAL function (“L” input: valid)
At normal mode: METAL on/off control signal output to the CXA2510AQ (IC351)
“H”: METAL on
XR-C6090R: Not used this function in this set (fixed at “H”)
XR-C6100R: Used for the this function