Pin

Mark

I/O

Function

No.

 

Division

 

1

RVDD 3

I

Power supply to internal

 

 

 

DRAM

2

RVDD 18

O

Voltage regulator output

 

 

 

terminal (Connects to

 

 

 

internal DRAM supply

 

 

 

terminal)

3

RVDD 23

—

Voltage regulator input

 

 

 

terminal (Accepts a supply

 

 

 

voltage identical to that for

 

 

 

IO pad)

4

LON

I

Voltage regulator ON/OFF

 

 

 

control signal input

 

 

 

terminal (1:ON, 2:OFF)

5

TMDISY

O

Microprocessor interrupt

 

 

 

signal 3 output terminal

 

 

 

(for monitoring)

6

TSGSY

O

ATRAC frame sync. signal

 

NC

 

output terminal (for

 

 

 

monitoring)

7

MONI6

O

Monitor signal output

 

 

 

terminal 6

8

MONI5

O

Monitor signal output

 

 

 

terminal 5

9

NRST

I

Chip Reset signal input

 

 

 

terminal (O:reset)

10

SELAD

I

Microprocessor IF address

 

 

 

data select signal input

 

 

 

terminal

11

SSCK

I

Microprocessor IF shift

 

 

 

clock signal input terminal

12

SSDW

I

Microprocessor IF write

 

 

 

data input terminal

13

SSDR

O

Microprocessor IF read

 

 

 

data output terminal

14

NRQ

O

Microprocessor interrupt

 

 

 

signal 1 output terminal

15

MDAS

O

Microprocessor interrupt

 

CSY

 

signal 2 output terminal

16

FG

I

FG input terminal

17

TRDP

O

Tracking drive (+) PWM

 

 

 

signal output terminal

18

TRDM

O

Tracking drive (-) PWM

 

 

 

signal output terminal

46

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Image 46
Panasonic SJ-MJ88 Rvdd, Dram, Lon, Tmdisy, Tsgsy, MONI6, MONI5, Nrst, Selad, Ssck, Ssdw, Ssdr, Nrq, Mdas, Csy, Trdp, Trdm
Page 45 Page 47

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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