YMDC-4071 is a SoC chip that is highly integrated with CalmADM3(16bit RISC CPU, 24bit DSP), NOR Flash(2Mbit), SRAM(76KB) and USB 1.1 Function.  It is designed for better power saving solution so that it is suitable for Portable Digital Audio Encoder/Decoder systems.  Also, constructing with 16bit RISC CPU and 24bit Fixed Point DSP in YMDC-4071, this architecture provides the best solution (performance and cost point of view) for controlling audio data processing.  Firmware in YMDC-4071 is easy upgradeable through the USB.

-   Portable Flash type MP3 player
-   Digital Voice Recorder
-   MP3 Application (USB Host player, SD only player, Car stereo, Bluetooth, Mobile phone)
-   Other Media Applications
-   VOIP Applications

 Core           16bit RISC CPU (100MHz)                         ADC : 10bit x 5Channel
                   24bit Fixed Point DSP                               IO DMA / RTC
                   Instruction Cache: 4KB                            Timer and Counters / Watch Dog Timer
                   X, Y Data Cache: each 6KB                      LCD Interface Circuits
 Memory      4Mbit NOR Flash Memory               Interface      
                   128KB SRAM                                          UART / IIS / IIC / SPI / GPIOs
                   4KB Boot ROM                                        SPDIF In/Output
 USB 1.1 Function (High Speed supported)           Clock Generator & PLL                                                                        Operating Voltage Range     
 Card           SD(Secure Digital Card) Interface              Internal Logic        1.65V ~ 1.95V   
                   MMC(Multi Media Card) Interface             Analog, I/O Ports   2.7V  ~ 3.3V
                   Memory Stick Interface                    Package     
                   Smart Media Card Interface                      128TQFP (14x14) / 160FBGA (12x12)
 CE Sample  Available Now                                

-   Provides Reference Solutions (Hardware and Software)
-   Provides various types’ support : full (H/W, S/W) design support or provides S/W lib.
     for customer design
-   Provides EVA board for software developing
-   Provides Software Development Kit
     ◆ Flash type MP3 player (MP3, ADPCM, WMA with PDDRM)
     ◆ Host MP3
     ◆ Digital Voice Recorder




  Audio Format

MPEG1,2,2.5 Layer3 (8~320Kbps, VBR)
WMA Version 8 (32~192Kbps)
ADPCM(G.726, 32kbps)
Sampling Frequency : 8~48KHz
ID3 Tag Ver1.0/1.1/2.0 Support ID3 Tag Ver2.3/2.4


Audio Format

 MP3 (8Kbps – 320Kbps)
 ADPCM (G,726, 32Kbps)


File System

 FAT12, FAT16, FAT32





Media Card



Playback Time

 AAA×1EA MP3 Play: more than 12hours


PC Interface

 USB 1.1 : Mass Storage Class
 Speed : 6 Mbps (download)


Support OS

 Windows 98SE/ME/2000/XP and MAC



 Headphone Out, Line-In, MIC
 S/N : 90dB
 THD : 0.0038%

Option : Line-Out
Optical IN/Out

Copyright Protection




 128x128 2Color OLED
 128x64  B/W LCD / 7 Color LED Backlight


FM Radio

 FM Tuner(20Preset)


Audio post processing

 SRS-Wow (Wow, TruBass, Focus)
 Speed/Key Control (0.7 – 1.3X Play Speed Control)
 Equalizer (Normal, Classic, Pop, Rock, Jazz)


Firmware Upgrade

 Firmware Upgradeable via USB


Playback Mode

 One, Directory, Sub-Directory, All,
 Shuffle, Intro and Repeat A-B


Music Management

 Play List(Program, M3U)