Pin No.

Pin Name

I/O

Description

 

 

 

 

 

 

 

 

46

 

XRAS

O

Row address strobe signal output to the D-RAM (IC124)

“L” active

 

 

 

 

 

 

 

47

 

XWE

O

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

“L” active

 

 

 

 

 

 

 

48

 

D1

I/O

 

 

 

 

 

 

 

 

 

 

49

 

D0

I/O

Two-way data bus with the D-RAM (IC124)

 

 

50

 

D2

I/O

 

 

 

 

 

 

51

 

D3

I/O

 

 

 

 

 

 

 

 

 

52

 

MVCI

I (S)

Digital in PLL oscillation input from the external VCO

Not used (fixed at “L”)

 

 

 

 

 

 

 

53

 

ASYO

O

Playback EFM full-swing output terminal

 

 

 

 

 

 

 

54

 

ASYI

I (A)

Playback EFM asymmetry comparator voltage input terminal

 

 

 

 

 

 

 

55

 

AVDD

—

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

 

 

56

 

BIAS

I (A)

Playback EFM asymmetry circuit constant current input terminal

57

 

RFI

I (A)

Playback EFM RF signal input from the CXA2523AR (IC101)

 

 

 

 

 

 

 

58

 

AVSS

—

Ground terminal (analog system)

 

 

 

 

 

 

 

59

 

PCO

O (3)

Phase comparison output for master clock of the recording/playback EFM master PLL

 

 

 

 

 

60

 

FILI

I (A)

Filter input for master clock of the recording/playback master PLL

 

 

 

 

 

61

 

FILO

O (A)

Filter output for master clock of the recording/playback master PLL

62

 

CLTV

I (A)

Internal VCO control voltage input of the recording/playback master PLL

63

 

PEAK

I (A)

Light amount signal (RF/ABCD) peak hold input from the CXA2523AR (IC101)

 

 

 

 

 

64

 

BOTM

I (A)

Light amount signal (RF/ABCD) bottom hold input from the CXA2523AR (IC101)

 

 

 

 

 

65

 

ABCD

I (A)

Light amount signal (ABCD) input from the CXA2523AR (IC101)

 

 

 

 

 

 

66

 

FE

I (A)

Focus error signal input from the CXA2523AR (IC101)

 

 

 

 

 

 

67

 

AUX1

I (A)

Auxiliary signal (I3 signal/temperature signal) input from the CXA2523AR (IC101)

68

 

VC

I (A)

Middle point voltage (+1.65V) input from the CXA2523AR (IC101)

69

 

ADIO

O (A)

Monitor output of the A/D converter input signal

Not used (open)

70

 

AVDD

—

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

 

 

 

 

 

 

 

71

 

ADRT

I (A)

A/D converter operational range upper limit voltage input terminal (fixed at “H” in this set)

 

 

 

 

 

72

 

ADRB

I (A)

A/D converter operational range lower limit voltage input terminal (fixed at “L” in this set)

 

 

 

 

 

 

 

73

 

AVSS

—

Ground terminal (analog system)

 

 

74

 

SE

I (A)

Sled error signal input from the CXA2523AR (IC101)

 

75

 

TE

I (A)

Tracking error signal input from the CXA2523AR (IC101)

76

 

DCHG

I (A)

Connected to the +3.3V power supply

 

 

 

 

 

 

 

 

77

 

APC

I (A)

Error signal input for the laser automatic power control

Not used (fixed at “H”)

 

 

 

 

 

78

 

ADFG

I (S)

ADIP duplex FM signal (22.05 kHz ± 1 kHz) input from the CXA2523AR (IC101)

 

 

 

 

 

79

 

F0CNT

O

Filter f0 control signal output to the CXA2523AR (IC101)

 

 

 

 

 

80

 

XLRF

O

Serial data latch pulse signal output to the CXA2523AR (IC101)

81

 

CKRF

O

Serial data transfer clock signal output to the CXA2523AR (IC101)

82

 

DTRF

O

Writing serial data output to the CXA2523AR (IC101)

 

 

 

 

 

 

 

83

 

APCREF

O

Control signal output to the reference voltage generator circuit for the laser automatic power

 

control

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

84

 

LDDR

O

PWM signal output for the laser automatic power control

Not used (open)

 

 

 

 

 

85

 

TRDR

O

Tracking servo drive PWM signal (–) output to the BH6511FS (IC152)

 

 

 

 

 

86

 

TFDR

O

Tracking servo drive PWM signal (+) output to the BH6511FS (IC152)

87

 

DVDD

—

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

 

 

88

 

FFDR

O

Focus servo drive PWM signal (+) output to the BH6511FS (IC152)

 

 

 

 

 

89

 

FRDR

O

Focus servo drive PWM signal (–) output to the BH6511FS (IC152)

 

 

 

 

 

 

90

 

FS4

O

Clock signal (176.4 kHz) output terminal (X’tal system)

Not used (open)

 

 

 

 

 

 

 

 

* 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.

– 60 –

Page 47 Page 49
Page 48
Image 48
Sony MDS-JE630 service manual Xras, Xwe, Asyo, Asyi, Avdd, Bias, Rfi, Avss, Fili, Filo, Cltv, Xlrf, Lddr, Trdr, Ffdr, FS4
Page 47 Page 49

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