MHC-SV7AV, ST-SV7 - Sony Audio Service Manual (repair manual). Page 25

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Pin No.

Pin Name

I/O

Description

1 to 6

G6 to G1

O

Grid drive signal output to the fluorescent indicator tube (FL601)

7 to 10

A1 to A4

O

Segment drive signal output to the fluorescent indicator tube (FL601)

11

VSS FOR IO

—

Ground terminal (for I/O)

12 to 22

A5 to A15

O

Segment drive signal output to the fluorescent indicator tube (FL601)

23

VDD FOR VFT

—

Power supply terminal (+3.3V) (for VFT)

24 to 41

A16 to A33

O

Segment drive signal output to the fluorescent indicator tube (FL601)

42

VSS FOR IO

—

Ground terminal (for I/O)

43 to 47

A34 toA38

O

Segment drive signal output to the fluorescent indicator tube (FL601)

48

VKK FOR VFT

—

Power supply terminal (–28V) (for VFT)

49

MODE0

—

Chip mode selection terminal     Not used (fixed at  “H”)

50

MODE1

—

Chip mode selection terminal     Not used (fixed at  “H”)

51

MODE2

—

Chip mode selection terminal     Not used (fixed at  “L”)

52

JOG2B

I

Jog dial pulse input from the rotary encoder (for sound) in the TA-SV7AV (B phase input)

53

JOG2A

I

Jog dial pulse input from the rotary encoder (for sound) in the TA-SV7AV (A phase input)

54

JOG1B

I

Jog dial pulse input from the rotary encoder (for function) in the TA-SV7AV (B phase input)

55

JOG1A

I

Jog dial pulse input from the rotary encoder (for function) in the TA-SV7AV (A phase input)

56

VOLA

I

Jog dial pulse input from the rotary encoder (for volume) in the TA-SV7AV (A phase input)

57

VOLB

I

Jog dial pulse input from the rotary encoder (for volume) in the TA-SV7AV (B phase input)

58, 59

—

—

Not used (open)

60

I2C DATA

I/O

Communication data bus with the system controller (IC501) and MCE-SV7

61

I2C CLK

I/O

Communication data reading clock signal input or transfer clock signal output with the system 
controller (IC501) and MCE-SV7

62

AVCC FOR 

ANALOG

—

Power supply terminal (+3.3V) (for analog)

63

AVSS FOR 

ANALOG

—

Ground terminal (for analog)

64

KEY0

I

Key input terminal (A/D input)    CLOCK/TIMER, TIMER SELECT, TUNER/BAND, TUNING 
+/–, ENTER,  PRESET +/–, TUNER MEMORY, STEREO/MONO (S602 to S611) keys input

65

KEY1

I

Key input terminal for TA-SV7AV (A/D input)

66 to 76

—

—

Not used (open)

77

RESET

I

Reset signal input from the system controller (IC501)    “L”: reset

78 to 80

—

—

Not used (open)

81

VSS FOR CPU

—

Ground terminal (for CPU)

82

XIN

I

System clock input terminal (4 MHz)

83

XOUT

O

System clock output terminal (4 MHz)

84

VCC FOR CPU

—

Power supply terminal (+3.3V)

85 to 91

—

—

Not used (open)

92 to 94

G12

O

Grid drive signal output to the fluorescent indicator tube (FL601)

95 to 98

G11 to G8

O

Grid drive signal output to the fluorescent indicator tube (FL601)

99, 100

G7

O

Grid drive signal output to the fluorescent indicator tube (FL601)