Specyfikacja sprzętu

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1. Wnętrze s1mp3back to top

Main Layer of pcb board Main board's battery side. Original file(1024x385) download.
  • [1]USB connector
  • [2]Radio Coils
  • [3]ICE header
  • [4]Buttons (+/- volume)
  • [5]Board number
  • [6]Switch (hold)
  • [7]P2 audio jack
  • [8]Mode button
  • [9]Microphone
  • [10]LCD board connector
Second layer of PCB board Main board's chip side. Original file(1024x399) download.
  • [11]Samsung K9W8G08U1M [NAND FLASH MEMORY]
  • [12]Action ATJ2085 P [RAM][ROM][CPU]
  • [13]Crystal
  • [14]Philips TEA5767 [FM RADIO CI]

2. Schemat elektrycznyback to top

A pdf with the ready electric schematics have been found!

Download it :[Samograj_atj2085.pdf]

I have tried to make some work by myself. It's really dirty, so i'm not placing here. If you are interested at the wiring, email me.

3. Numer na płytce: identyfikacja urządzeniaback to top

Board Number Location

A very important data to be remarked is the board version number, because It's the only trustable way to identify the device.

The number is usually behind a plastic sticker, near the minus battery pole. If you need help to open the player, see a tutorial here: Demontaż s1mp3.

If you are having problems to find your board number, it may be behind the LCD cable. You might have to lift it carefully to see the bard number. Seek everywhere! Some people take a bit of time to find the small white words. We qualify anything printed in white on the green printboard as the board number.

Mine says :
2004-00-20 MP-482C MAIN V8

4. Actions ATJ2085[CPU][RAM][ROM]back to top

The ATJ2085 is an audio SoC. Inside, we have a Z80 core, 29KB of ROM and 116KB of SRAM. And a "24-bit Harvard architecture DSP". They both have on-chip DSU.

The INcomplete datasheet can be downloaded : [ATJ2085_datasheet_v1.5.pdf]

The ATJ2075 datasheet is available here [ATJ2075_Data_Sheet_ver1.00.pdf]

Here is the correct pin numberation I made for the ATJ2085:

pin numberation for atj2085

We already got some additional information about the ATJ2085, if you need to know more, contact us at the mail list.

5. Samsung K9W8G08U1M[FLASH MEM]back to top

It's the NAND flash memory chip. In some s1 mp3 players, there maybe a HYNIX chip instead.

My CI number (1GB total memory):
Samsung 507 K9W8G08U1M

6. Philips TEA5767[FM RADIO]back to top

Philips radio ci photo

The TEA5767 is a low power FM radio CI.

7. Płytka z wyświetlaczem LCDback to top

The LCD board is composed of a button and a LCD(and a few transistors/resistors). It's connected to the main board though a 20 pin cable. On some players, the lcd board may host a NAND flash memory too.

Image of pcb board

8. Gniazdko ICEback to top

ICE detail on PCB

Few info is available. It is a 5-pin header, connected directly to the ICERST#, ICEEN#, GPO_A0, GPO_A2 and GPO_A3 legs at the ATJ2085. These last tree work as ICEDI, ICEDO and ICECK.

If you think you can help us to make ICE work, please contact us at the mail list.



9. Możliwości sprzętoweback to top

  • 24 bits DSP with on-chip DSU
  • 8-bit Z80 CPU core with on-chip DSU (run at 24.576MHz(TYP), up to 60MHz - software controlled)
  • USB 1.1 - Although most of sellers say it support USB 2.0, they mean the device is "compliant" with this protocol, not a full speed mode capable device.
  • Support transfer speed up to 8Mbit/s, or 1MB/s
  • Works as a generic USB storage disk
  • Supports MPEG1/2/2.5 Audio Layer 1, 2, 3 and WMA. (We are not sure if other music formats are possible)
  • Frequency response : 20Hz to 20KHz [wasn't tested yet]
  • Earphone impedance 32 ohm [wasn't tested yet]
  • Output power: 5mW x 5mW (16 ohm) [wasn't tested yet]
  • S/N (noise ratio) 90dB [wasn't tested yet / ON LOW VOLUME THE SNR IS REALLY HIGH!]
  • Record and play voice (but no mp3 encoding, for the most of s1mp3 players)
  • FM radio (depends on the presence of the philips radio chip)
  • Support live equalizer
  • Record with mic on WAV(32kbit), .ACT(8kbit) or .VOR(32 or 8kbit ) mode.

The s1 mp3 factory firmware can support up to a music player, a voice recorder, an internal files player, fm radio, a system config menu , a phone book* and a TXT file reader*

Factory firmware limitations:

  • 130 files/folder on root limitation
  • 99 musics per folder limitation
  • No ID3 lyrics support
  • Does not support random through all folders
  • Does not support playlists
  • Does not support selecting musics by ID3 filters hello
  • No sub directory support

10. Rozłożone urządzeniaback to top

Building. If you have a photo of your player disassembled, please email me.

Meet us at the mail list
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