•BD BOARD IC121 CXD2656R

(DIGITAL SIGNAL PROCESSOR, DIGITAL SERVO PROCESSOR, EFM/ACIRC ENCODER/DECODER, SHOCK PROOF MEMORY CONTROLLER, ATRAC ENCODER/DECODER)

Pin No.

Pin Name

I/O

 

Description

1

MNT0 (FOK)

O

Focus OK signal output to the system controller (IC501)

“H” is output when focus is on (“L”: NG)

 

 

 

 

 

 

 

 

 

 

 

2

MNT1 (SHOCK)

O

Track jump detection signal output to the system controller (IC501)

 

 

 

 

 

 

3

MNT2 (XBUSY)

O

Busy monitor signal output to the system controller (IC501)

 

 

 

 

 

 

4

MNT3 (SLOCK)

O

Spindle servo lock status monitor signal output to the system controller (IC501)

 

 

 

 

 

 

5

 

SWDT

I

Writing serial data signal input from the system controller (IC501)

6

 

SCLK

I (S)

Serial data transfer clock signal input from the system controller (IC501)

7

 

XLAT

I (S)

Serial data latch pulse signal input from the system controller (IC501)

 

 

 

 

 

 

8

 

SRDT

O (3)

Reading serial data signal output to the system controller (IC501)

 

 

 

 

 

 

9

 

SENS

O (3)

Internal status (SENSE) output to the system controller (IC501)

 

 

 

 

 

 

10

 

XRST

I (S)

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

 

 

 

 

 

 

11

 

SQSY

O

Subcode Q sync (SCOR) output to the system controller (IC501)

 

“L” is output every 13.3 msec

Almost all, “H” is output

 

 

 

 

 

 

 

 

 

 

 

12

 

DQSY

O

Digital In U-bit CD format subcode Q sync (SCOR) output to the system controller (IC501)

 

“L” is output every 13.3 msec

Almost all, “H” is output

 

 

 

 

 

 

 

 

 

 

 

13

 

RECP

I

Laser power selection signal input from the system controller (IC501)

 

“L”: playback mode, “H”: recording mode

 

 

 

 

 

 

 

 

 

 

14

 

XINT

O

Interrupt status output to the system controller (IC501)

 

 

 

 

 

 

15

 

TX

I

Recording data output enable signal input from the system controller (IC501)

 

Writing data transmission timing input (Also serves as the magnetic head on/off output)

 

 

 

 

 

 

 

 

 

 

16

 

OSCI

I

System clock signal (45.158 MHz) input terminal

17

 

OSCO

O

System clock signal (512Fs=22.5792 MHz) output terminal Not used (open)

18

 

XTSL

I

Input terminal for the system clock frequency setting

 

 

 

“L”: 45.1584 MHz, “H”: 22.5792 MHz (fixed at “H” in this set)

19

 

DIN0

I

Digital audio signal input terminal when recording mode (for digital optical input)

20

 

DIN1

I

Digital audio signal input terminal when recording mode (for digital optical input)

 

 

 

 

 

 

21

 

DOUT

O

Digital audio signal output terminal when playback mode (for digital optical output)

 

 

 

 

 

 

 

22

 

DATAI

I

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

 

23

 

LRCKI

I

L/R sampling clock signal (44.1 kHz) input terminal

Not used (fixed at “L”)

24

 

XBCKI

I

Bit clock signal (2.8224 MHz) input terminal

Not used (fixed at “L”)

 

 

 

 

 

 

25

 

ADDT

I

Recording data input from the A/D, D/A converter (IC321)

 

 

 

 

 

 

26

 

DADT

O

Playback data output to the A/D, D/A converter (IC321)

 

 

 

 

 

 

27

 

LRCK

O

L/R sampling clock signal (44.1 kHz) output to the A/D, D/A converter (IC321)

 

 

 

 

 

 

28

 

XBCK

O

Bit clock signal (2.8224 MHz) output to the A/D, D/A converter (IC321)

29

 

FS256

O

Clock signal (11.2896 MHz) output terminal

Not used (open)

30

 

DVDD

—

Power supply terminal (+3.3V) (digital system)

 

 

 

 

 

 

 

 

 

31 to 34

A03 to A00

O

Address signal output to the D-RAM (IC124)

 

 

 

 

 

 

 

 

 

35

 

A10

O

Address signal output to the external D-RAM

Not used (open)

 

 

 

 

 

 

 

 

36 to 40

A04 to A08

O

Address signal output to the D-RAM (IC124)

 

 

 

 

 

 

 

 

 

41

 

A11

O

Address signal output to the external D-RAM

Not used (open)

 

 

 

 

 

 

 

 

42

 

DVSS

—

Ground terminal (digital system)

 

 

 

 

 

 

 

 

 

43

 

XOE

O

Output enable signal output to the D-RAM (IC124)

“L” active

 

 

 

 

 

 

44

 

XCAS

O

Column address strobe signal output to the D-RAM (IC124) “L” active

 

 

 

 

 

 

 

45

 

A09

O

Address signal output to the D-RAM (IC124)

 

 

* I (S) stands for schmitt input, I (A) for analog input, O (3) for 3-state output, and O (A) for analog output in the column I/O.

– 59 –

Page 46 Page 48
Page 47
Image 47
Sony MDS-JE630 service manual Xlat, Srdt, Sens, Xrst, Sqsy, Dqsy, Recp, Osci, Osco, Xtsl, Lrcki, Dvdd, Dvss, Xoe, Xcas
Page 46 Page 48

MDS-JE630 specifications

The Sony MDS-JE630 is a compact and versatile MiniDisc recorder that was launched in the late 1990s, showcasing Sony's commitment to portable digital audio technology. Renowned for its superior sound quality, the MDS-JE630 is an exceptional choice for audiophiles and professionals alike, offering a user-friendly interface and a range of advanced features.

One of the main highlights of the MDS-JE630 is its MDLP (MiniDisc Long Play) technology, which allows for extended recording time without sacrificing audio quality. This feature enables users to record up to 148 minutes of stereo sound on a single MiniDisc, making it an invaluable tool for those requiring longer recording sessions, such as musicians or radio broadcasters.

The MDS-JE630 is equipped with ATRAC (Adaptive Transform Acoustic Coding) compression algorithms, ensuring that audio files retain high fidelity even when compressed. The device features a 20-bit digital-to-analog converter, providing remarkable sound clarity and depth. Users can expect crisp highs and robust lows, making every listening experience engaging and immersive.

Ease of use is another hallmark of the MDS-JE630. The front panel includes an intuitive layout, featuring a large LCD display that clearly shows current track information, time elapsed, and other playback indicators. Additionally, the unit offers various playback modes such as normal, repeat, and shuffle, allowing users to customize their listening experience.

The recording process on the MDS-JE630 is seamless, thanks to its one-touch recording feature. Users can easily initiate recordings from connected sources, including CD players or turntables, via the device's multiple inputs, such as line-in and optical digital inputs. This adaptability makes it a versatile component for any audio setup, whether for home studios or live performances.

Moreover, the MDS-JE630 incorporates a variety of editing functions, including track arranging, dividing, and merging, providing users with the ability to create perfectly curated audio collections. The device also supports a wide range of MiniDisc formats, ensuring compatibility with existing media.

In conclusion, the Sony MDS-JE630 stands out as a premier MiniDisc recorder, offering a blend of advanced technology, user-friendly design, and high-quality playback. Its innovative features and commitment to sound quality have made it a popular choice for music professionals and enthusiasts, solidifying its reputation as a reliable audio recording solution for years to come.
Top Page Image Contents