•MAIN BOARD IC501 M30624MG-223FP (SYSTEM CONTROLLER)

Pin No.

 

Pin Name

I/O

 

 

Description

 

 

 

 

 

 

 

 

 

 

 

1, 2

 

NC

O

Not used (open)

 

 

 

 

3

 

C1

O

Monitor output terminal for the test

C1 error rate is output when test mode

4

 

ADER

O

Monitor output terminal for the test

ADER is output when test mode

 

 

 

 

 

 

5

 

SQSY

I

Subcode Q sync (SCOR) input from the CXD2656R (IC121)

 

“L” is input every 13.3 msec

Almost all, “H” is input

 

 

 

 

 

 

 

 

 

 

 

 

 

6

 

RMC

I

Remote control signal input from the remote control receiver (IC761)

 

 

 

 

 

 

 

7

 

A1 IN

I

Sircs remote control signal input of the CONTROL A1II

 

 

 

 

 

 

 

 

8

 

BYTE

I

External data bus line byte selection signal input

“L”: 16 bit, “H”: 8 bit (fixed at “L”)

9

 

CNVSS

—

Ground terminal

 

 

 

 

10

 

XT-IN

I

Sub system clock input terminal (32.768 kHz)

Not used (open)

 

 

 

 

 

 

 

11

 

XT-OUT

O

Sub system clock output terminal (32.768 kHz)

Not used (open)

 

 

 

 

 

 

12

 

S.RST

I

System reset signal input from the LA5632 (IC431) and RESET switch (S401) “L”: reset

 

For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”

 

 

 

 

 

 

 

 

 

 

 

 

 

13

 

XOUT

O

Main system clock output terminal (10 MHz)

 

 

 

 

 

 

 

 

 

 

 

 

14

 

GND

—

Ground terminal

 

 

 

 

15

 

XIN

I

Main system clock input terminal (10 MHz)

 

 

16

 

+3.3V

—

Power supply terminal (+3.3V)

 

 

 

 

 

 

 

 

 

 

17

 

NMI

I

Non-maskable interrupt input terminal (fixed at “H” in this set)

 

 

 

 

 

 

18

 

DQSY

I

Digital In U-bit CD format subcode Q sync (SCOR) input from the CXD2656R (IC121)

 

“L” is input every 13.3 msec

Almost all, “H” is input

 

 

 

 

 

 

 

 

 

 

 

 

 

19

 

P.DOWN

I

Power down detection signal input terminal “L”: power down, normally: “H”

 

 

 

 

 

 

 

 

20

KEYBOARD CLK

I

Keyboard serial clock signal input terminal

 

 

21

KEYBOARD DATA

I

Keyboard serial data input terminal

 

 

 

22

 

NC

O

Not used (open)

 

 

 

 

 

 

 

 

 

 

 

23

 

XINT

I

Interrupt status input from the CXD2656R (IC121)

 

 

 

 

 

 

 

 

 

 

 

24 to 26

 

NC

O

Not used (open)

 

 

 

 

 

 

 

 

 

 

 

27

KEYBOARD CONT

O

Keyboard control signal output terminal “H”: off

 

 

 

 

 

 

 

 

 

 

 

28 to 30

 

NC

O

Not used (open)

 

 

 

 

31

 

SWDT

O

Writing data output to the CXD2656R (IC121) and A/D, D/A converter (IC321)

32

 

SRDT

I

Reading data input from the CXD2656R (IC121)

 

 

 

 

 

 

 

33

 

SCLK

O

Serial clock signal output to the CXD2656R (IC121) and A/D, D/A converter (IC321)

 

 

 

 

 

 

 

34

 

FLCS

O

Chip select signal output to the FL/LED driver (IC771)

 

 

 

 

 

 

 

 

 

35

 

FLDATA

O

Serial data output to the FL/LED driver (IC771)

 

 

 

 

 

 

 

 

 

 

 

 

36

 

NC

O

Not used (open)

 

 

 

 

37

 

FLCLK

O

Serial data transfer clock signal output to the FL/LED driver (IC771)

38, 39

 

NC

O

Not used (open)

 

 

 

 

40

ADA LATCH

O

Serial data latch pulse signal output to the A/D, D/A converter (IC321)

 

 

 

 

 

 

 

 

 

 

41

 

NC

I

Not used (fixed at “L”)

 

 

 

 

 

 

 

 

 

 

42

 

JOG1

I

Jog dial pulse input from the rotary encoder (S713 - AMS ±) (B phase input)

 

 

 

 

 

 

43

 

JOG0

I

Jog dial pulse input from the rotary encoder (S713 - AMS ±) (A phase input)

 

 

 

 

 

 

 

 

 

 

44

 

NC

O

Not used (open)

 

 

 

 

45

 

A1 OUT

O

Sircs remote control signal output of the CONTROL A1ΙΙ

46

 

NC

I

Not used (fixed at “H”)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

47

 

NC

O

Not used (open)

 

 

 

 

 

 

 

 

 

 

 

48

 

DA RST

O

Reset signal output to the A/D, D/A converter (IC321)

“L”: reset

 

 

 

 

 

 

 

49

 

MUTE

O

Audio line muting on/off control signal output terminal

“L”: line muting on

 

 

 

 

 

 

 

 

 

 

– 62 –

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Sony MDS-JE630 service manual Ader, Byte, Cnvss, Down, Flcs, Flclk, Da Rst
Page 49 Page 51

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