CDX-601, CDX-636 - Sony Car Audio Service Manual (repair manual). Page 30

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Pin No.

Pin Name

I/O

Description

1

ESPSEL

I

ESP on/off setting terminal    “L”: ESP on    Not used (open)

2

ML

O

Normal/high speed playback control signal output terminal    “L”: high speed playback
Not used (open)

3

EMPHO

O

Emphasis signal output terminal    Not used (open)

4

AMUTE

O

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

5

CDXLT

O

Serial data latch pulse signal output to the CXD2598Q (IC101)

6

CDDATA

O

Serial data output to the CXD2598Q (IC101)

7

CDCLK

O

Serial data transfer clock signal output to the CXD2598Q (IC101)

8

CDON

O

D/A converter and servo section power supply on/off control signal output    “H”: power on

9

ELVON

O

Mechanism deck section power supply on/off control signal output    “H”: power on

10

DOUTSEL

I

Digital output on/off control signal input terminal     “L”: digital output on    Not used (open)

11

NC

—

Not used (open)

12

RAMWE

O

Data write enable signal output to the S-RAM (IC202) (CDX-636 only)     “L”: active
CDX-601: Not used (open)

13 to 20

RAMIO8 to RAMIO1

I/O

Two-way data bus with the S-RAM (IC202) (CDX-636 only)     CDX-601: Not used (open)

21 to 28

RAM7 to RAM0

O

Address signal output to the S-RAM (IC202) (CDX-636 only)     CDX-601: Not used (open)

29

NC

—

Not used (open)

30 to 36

RAM14 to RAM8

O

Address signal output to the S-RAM (IC202) (CDX-636 only)     CDX-601: Not used (open)

37

RAMCE

O

Chip enable signal output to the S-RAM (IC202) (CDX-636 only)     “L”: active
CDX-601: Not used (open)

38

RESET

I

System reset signal input from the SONY bus interface (IC302) and reset signal generator (IC303)
“L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”

39

GND

—

Ground terminal

40

XTAL

O

Main system clock output terminal (12 MHz)

41

EXTAL

I

Main system clock input terminal (12 MHz)

42

TEXTSEL

I

CD text mode setting terminal    “L”: CD text on, “H”: does not display track name
CDX-601: fixed at “H” (open)    CDX-636: fixed at “L”

43

SI

I

Serial data input from the SONY bus interface (IC302)

44

SO

O

Serial data output to the SONY bus interface (IC302)

45

SCLK

I

Serial data transfer clock signal input from the SONY bus interface (IC302)

46

CFSEL

I

Custom file on/off setting terminal    “L” custom file on
CDX-601: fixed at “H” (open)    CDX-636: fixed at “L”

47

EEINIT

I

Initialize signal input for the EEPROM (IC203)    “H”: format
CDX-601: not used (open)    CDX-636: fixed at “L”

48

EEDATA

I/O

Two-way data bus with the EEPROM (IC203) (CDX-636 only)    CDX-601: not used (open)

49

EECLK

O

Serial data transfer clock signal output to the EEPROM (IC203) (CDX-636 only)
CDX-601: not used (open)

50

VSS

—

Ground terminal (for A/D converter)

51

AVREF

I

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

52

VDD

—

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

53

SINGLE

I

Setting terminal for the single disc/multiple discs mode
“L”: single mode, “H”: multiple discs mode    Fixed at “H” in this set (open)

54

LDON

O

The laser automatic power control on/off signal output    “H”: automatic power control on

55

AGCHOLD

O

RF AGC hold on/off signal output    “H”: hold

56

RFAGC

I/O

RF AGC level control signal output    “L”: off, center voltage: 40%, “H”: 60%