Pin

Mark

I/O

Function

No.

 

Division

 

19

RVDD 1

I

Power supply to internal

 

 

 

DRAM

20

RVSS 2

—

GND to internal DRAM

21

FODP

O

Focus drive (+) PWM signal

 

 

 

output terminal

22

FODM

O

Focus drive (-) PWM signal

 

 

 

output terminal

23

SPDP

O

Spindle drive (+) PWM

 

 

 

signal output terminal

24

SPDM

O

Spindle drive (-) PWM

 

 

 

signal output terminal

25

LDON

O

Laser power control output

 

 

 

terminal (1:ON, 0:OFF)

26

PVPP

—

Monitor to internal DRAM

 

DRAM1

 

output terminal (Not used,

 

 

 

open)

27

IVDD 0

—

Power supply terminal for I/

 

 

 

O pad

28

DVDD 0

—

Digital power supply

29

XI

I

Crystal oscillator input

 

 

 

terminal (F=16.9344MHz)

30

DVSS 0

—

Digital GND

31

XO

O

Crystal oscillator output

 

 

 

terminal (F=16.9344MHz)

32~34STP10~STP12

I

Stepping motor status

 

 

 

input terminal (0~2)

35~37STP00~STP02

O

Stepping motor drive

 

 

 

signal output terminal (0~2)

38

RFSWHL

O

Laser power control output

 

 

 

terminal (PIT/GRUVE

 

 

 

switching)

39

RFSWPG

O

Laser power control output

 

 

 

terminal (Reflectance

 

 

 

switching)

40

PEFMS

I

EFM signal input terminal

41

EFMPLLF

O

EFM PLL filter output

 

 

 

terminal

42

PEFM1

O

Loop filter terminal for

 

 

 

EFM data slicing (Not

 

 

 

used, open)

43

EFMFIL

O

Input filter switching for

 

 

 

EFM data slicing terminal

44

EFMIREF

I

Reference current setting

 

 

 

terminal for EFM PLL

47

Page 46 Page 48
Page 47
Image 47
Panasonic SJ-MJ88 manual Rvss, Fodp, Fodm, Spdp, Spdm, Ldon, Pvpp, DRAM1, Ivdd, Dvdd, Dvss, Pefms, Efmpllf, PEFM1, Efmfil
Page 46 Page 48

SJ-MJ88 specifications

The Panasonic SJ-MJ88 is a portable mini disc player renowned for its compact design and impressive audio quality. Launched in the late 1990s, this device epitomized the transition in portable music technology from cassette tapes and CD players to the digital format of MiniDiscs. The SJ-MJ88 supports various audio formats, making it a versatile choice for music enthusiasts.

One of the standout features of the SJ-MJ88 is its ability to provide near-CD quality sound through the MiniDisc format. This was made possible by its ATRAC (Adaptive Transform Acoustic Coding) compression technology, which retains a significant amount of audio fidelity even though the files are compressed. Users appreciated the ability to record and create customized playlists, allowing for an engaging listening experience.

The SJ-MJ88 is compact and lightweight, designed for portability. It features a sleek, ergonomic body that fits easily into bags and pockets, making it an excellent companion for on-the-go music lovers. Despite its small size, the device was equipped with a robust rechargeable battery that offered long hours of playback time, a crucial factor when traveling.

Another compelling characteristic of the SJ-MJ88 is its user-friendly interface. The device is designed with intuitive buttons and a clear display, allowing users to navigate through tracks effortlessly. The inclusion of features like digital pitch control and a programmable memory further enhanced user interaction, providing customization options for the listening experience.

Additionally, the SJ-MJ88 included a solid set of digital editing tools, enabling users to edit their music on the track level, making it easy to rearrange songs or create unique mixes. This flexibility set it apart from its contemporaries and made it appealing to DJs and music producers.

Overall, the Panasonic SJ-MJ88 remains a memorable device within the history of personal audio technology, combining portability, quality sound, and user-friendly features into a compact mini disc player. Its legacy continues to be appreciated by loyal fans and collectors looking for a bridge between analog and digital music experiences, illustrating the innovation that Panasonic brought to the audio market during its time.
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