HCD-XB66, HCD-XB660, LBT-XB66, LBT-XB660 - Sony Audio Service Manual (repair manual). Page 22

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Pin No.

Pin Name

I/O

Function

1

TA-MUTE

O

Line muting on/off control signal output terminal    “L”: muting on

2

DBFB-H/L

O

DBFB normal/high selection signal output to the M62427FP (IC201)                                               
“L”: DBFB high, “H”: DBFB low

3

427-LAT

O

Serial data latch pulse output to the M62427FP (IC201)

4

K-CON-LAT

O

Serial data latch pulse output terminal    Not used (open)

5

K-CON-ON

O

On/off selection signal output of the key control circuit    “L”: on    Not used (open)

6

F-RELAY

O

Relay drive signal output for the speaker protect    “H”: on

7

R-RELAY

O

Relay drive signal output for the speaker protect    “H”: on    Not used (open)

8

PL-RELAY

O

Relay drive signal output for the speaker protect    “H”: on    Not used (open)

9

TEST

I

Test terminal    Connected to ground

10

X2

O

Main system clock output terminal (5 MHz)

11

X1

I

Main system clock input terminal (5 MHz)

12

VDD

—

Power supply terminal (+5V)

13

XT2

O

Sub system clock output terminal (32.768 kHz)

14

XT1

I

Sub system clock input terminal (32.768 kHz)

15

RESET

I

System reset signal input from the reset signal generator (IC302)    “L”: reset                                   
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”

16

(INT/IN)

I

Connected to ground

17

(INT/IN/OUT)

I

Connected to ground

18

SCOR

I

Subcode sync (S0+S1) detection signal input from the CXD2519Q (IC103)

19

SOFT-TEST

O

Output terminal for the software test (open)

20

AC-CUT

I

AC off detection signal input from the reset signal generator (IC302)

21

RDS-INT

I

Serial data reading clock signal input for the radio data system    Not used (fixed at “L”)

22

RDS-DATA

I

Serial data input for the radio data system    Not used (open)

23

VDD

—

Power supply terminal (+5V)

24

AVDD

—

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

25

ADJ

I

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

26

A-SHUT

I

Shut off detection signal input from the deck-A side reel pulse detector (Q1001)

27

B-SHUT

I

  Shut off detection signal input from the deck-B side reel pulse detector (Q1002)

28

B-HALF

I

Detection input from the deck-B half detect switch (S1006)

29

CLK-CHECK

I

Not used (fixed at “L”)

30

SPEC-IN

I

Setting terminal for the version

31

ADJ2

I

Setting terminal for the CD test mode    Normally: “L”

32

DEMO-MODE

I

Setting terminal for the demonstration H/L   Fixed at “L”

33

AVSS

—

Ground terminal (for A/D conversion)

34

SQ-DATA-IN

I

Sub-code Q data input from the CXD2519Q (IC103)

35

NCO

O

Not used (open)

36

SQ-CLK

O

Sub-code Q data reading clock signal output to the CXD2519Q (IC103)

37

SW-ON/OFF

O

Super woofer speaker on/off control signal output terminal    Not used (open)

38

FUNC1

I

Setting terminal for the function 1    Fixed at “L”

39

FUNC2

I

Setting terminal for the function 2    Fixed at “L”

40

VSS

—

Ground terminal

41

VOL-LAT

O

Serial data latch pulse output terminal    Not used (open)

42

PL-LAT

O

Serial data latch pulse output terminal    Not used (open)

43

COM-DIN

I

Serial data input terminal    Not used (fixed at “L”)