CDX-M800

SECTION 4

DIAGRAMS

4-1. IC PIN DESCRIPTIONS

•IC303 M30626FHPGP-052 (US, Canadian model) (SYSTEM CONTROL) (MAIN Board (2/2))

•IC303 M30626FHPGP-053 (AEP, UK, E model) (SYSTEM CONTROL) (MAIN Board (2/2))

Pin No.

Pin Name

I/O

Pin Description

 

 

 

 

1

SIRCS

I

Remote control data input

 

 

 

 

2

FP CTRL

O

Front panel open/close speed control signal

 

 

 

 

3

CD SO/TSO

O

CD servo serial data output

 

 

 

 

4

CD SI/TSI

I

CD servo serial data input

 

 

 

 

5

CD CKO/TCKO

O

CD servo serial clock output

 

 

 

 

6

BYTE

I

L fixed terminal

 

 

 

 

7

CNVSS

I

Flash write-in signal input

 

 

 

 

8

XIN

I

Sub clock signal input (32kHz)

 

 

 

 

9

XOUT

O

Sub clock signal output (32kHz)

 

 

 

 

10

RESET

I

CPU reset signal input

 

 

 

 

11

OSC OUT

O

Main clock signal output (6MHz)

 

 

 

 

12

VSS

—

Ground

 

 

 

 

13

OSC IN

I

Main clock signal input (6MHz)

 

 

 

 

14

VCC1

—

Power supply pin (+5V)

 

 

 

 

15

NMI

I

Non maskable interrupt signal input

 

 

 

 

16

CD PACK

I

CD text pack synchronized signal input

 

 

 

 

17

DAVN

I

RDS data acquisition detect signal

 

 

 

 

18

BU IN

I

Back-up power detect signal

 

 

 

 

19

NS MASK

O

Not used. (Open)

 

 

 

 

20

BEEP

O

Beep signal output

 

 

 

 

21

FLW IN

I

OSC frequency shift signal for DC/DC conv.

 

 

 

 

22

NCO

O

Not used. (Open)

 

 

 

 

23

SA CLK

O

Spectrum analyzer clock signal output

 

 

 

 

24

TEL ATT

I

telephone mute detect signal input

 

 

 

 

25

ATT

O

Mute signal output

 

 

 

 

26

VOL ATT

O

Electronic volume mute signal output

 

 

 

 

27

I2C CKO

O

Tuner/E-volume BUS clock output

 

 

 

 

28

I2C SIO

O

Tuner/E-volume BUS data output

 

 

 

 

29

UNI SO

O

SONY BUS data output

 

 

 

 

30

UNI SI

I

SONY BUS data input

 

 

 

 

31

UNI CKO

O

SONY BUS clock output

 

 

 

 

32

TUNER ATT

O

Tuner attenuate signal output

 

 

 

 

33

EESIO

I/O

EEPROM data input/output

 

 

 

 

34

EECKO

O

EEPROM clock output

 

 

 

 

35

NCO

O

Not used. (Open)

 

 

 

 

36

ADSO1

O

Not used. (Open)

 

 

 

 

37

ADSO2

O

Not used. (Open)

 

 

 

 

38

NCO

O

Not used. (Open)

 

 

 

 

39

HOLD

I

Flash write-in signal input

 

 

 

 

40

AMP DIAG

I

Amplifier diagnosis signal input

 

 

 

 

41

AMP STB

O

Amplifier strobe signal output

 

 

 

 

42

AMP ON

O

Not used. (Open)

 

 

 

 

43

TUNER ON

O

Not used. (Open)

 

 

 

 

44

WRI/WR

I

Flash write-in signal input

 

 

 

 

45

CD LIMIT

I

CD limit detect signal input

 

 

 

 

46

CD D SW

I

CD disc SW detect signal input

 

 

 

 

47

CD PH1

I

CD PH1 detect signal input

 

 

 

 

48

CD INSW/PH2

I

CD IN SW/PH2 detect signal input

 

 

 

 

49

PH3

I

CD PH3 detect signal input

 

 

 

 

50

DST SEL1

I

Destination select signal input

 

 

 

 

18

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Sony CDX-M800 service manual Section Diagrams, IC PIN Descriptions
Page 17 Page 19

CDX-M800 specifications

The Sony CDX-M800 is a standout model in the world of car audio systems, renowned for its combination of high-quality audio performance and user-friendly features. As a part of Sony's lineup, this CD receiver integrates both cutting-edge technology and classic functionalities, ensuring an enhanced listening experience during commutes or long road trips.

One of the key features of the Sony CDX-M800 is its advanced playback capabilities. The device can play a variety of formats including CDs, CD-Rs, and CD-RWs, as well as MP3 and WMA files. This versatility allows users to enjoy their favorite music without compatibility concerns. Additionally, the ability to play MP3 files means that users can store numerous songs on a single disc, reducing clutter and making it easier to switch playlists on the go.

The CDX-M800 features a sleek, user-friendly interface, complete with an LCD display that shows track information, radio stations, and playback modes. This display is designed for clarity, making it easy for users to navigate their audio options without distraction from the road. The rotary volume control and intuitive button layout enhance usability, allowing for quick adjustments while keeping attention on driving.

In terms of sound quality, the Sony CDX-M800 is equipped with a built-in equalizer, enabling users to customize the audio output to suit their preferences. With multiple preset sound modes and a 3-band equalizer, it enhances the clarity and richness of your music. The unit also supports Dynamic Reality Amp technology, which delivers powerful, distortion-free sound, contributing to an immersive listening experience.

Moreover, the CDX-M800 supports FM/AM radio with strong reception capabilities. The device can store up to 18 FM and 12 AM stations, allowing users to easily access their favorite radio shows without having to manually tune in repeatedly.

Connectivity is another essential feature of the Sony CDX-M800. The system is designed with a front-panel auxiliary input, which facilitates connection with external devices such as smartphones and MP3 players. This feature expands the listening options, allowing users to play their personal playlists directly through the vehicle’s sound system.

In summary, the Sony CDX-M800 is a well-rounded car audio solution, offering a blend of versatility, sound quality, and user-friendly features. Whether you're a casual listener or an audiophile, this CD receiver caters to a wide range of audio needs, making it a solid choice for enhancing your in-car entertainment experience.
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