Portable Audio/Photo/Storage Controller
 SM351 |
  Overview
The SM351 is a single-chip solution for NAND flash based portable audio/photo/storage applications. It features high performance digital audio, image decoder, NAND flash storage and display interfaces for standalone portable media players. A built-in high performance digital signal processor performs JPEG/motion JPEG picture and MP3/WMA decode, which enables the SM351 to play photo slide shows and background music simultaneously.
The SM351 integrates industry-standard serial interfaces, ACLink and I2S, to interface with external audio codec. A USB 2.0 device interface allows high speed data transfer between PC and NAND flash storage devices. In addition, I2C, SPI, and GPIO's are available for user-friendly control interfaces. It supports Microsoft's Windows Media Digital Rights Management (MS WMDRM 10). The SM351 is ideal for "iPod Photo" like MP3 and photo players with maximum eight flash memory devices supported.
Features
- MP3/WMA decoder
- JPEG and motion JPEG decoder
- MP3 encoder
- Voice recorded in ADPCM format
- Support WMA digital right management (DRM10)
- 8051 Microcontroller for resource control and management, DSP for audio/video decoding
- Windows and Mac drivers. Also support USB mass storage class
- Support FAT16, and FAT32 file system
- Upgradeable firmware
- High performance DSP (72 MHz)
- NAND flash memory interfaces (support MLC, SLC, AG-AND type flash memory)
- Secure Digital (SD) card and Memory Stick (MS) card interface support
- SDRAM interface support up to 16Mbytes external memory
- TV encoder, CSTN, SPI, or TFT LCD display interface, resolution up to 640x480x16-bit
- I2C/UART/ACLINK or I2S I/O interface
- 24 GPIO and button I/O controls for user interface
- USB 2.0 Device Controller
- Energy saving dynamic power management
- 1.8V core, 3.3V IO operating voltage, power consumption less than 100mW
- 180 pin BGA package, 0.18 um technology
Applications
- Flash based MP3/WMA player- Provides high quality audio playback for portable jukebox
- Flash based Photo/image viewer- View presentation files, JPEG photo, or motion JPEG images from flash memory on TV or TFT display
- Portable media storage device - High speed audio, video, and image files transfer from PC to flash memory
- Portable flash based MP3/WMA/JPEG/MJPEG player with pen drive function, support Digital Right Management (DRM)
- Portable flash based MP3/WMA/JPEG/MJPEG player with digital voice recorder and FM tuner, support DRM
- Portable flash based game MP3/WMA/JPEG/MJPEG player with DRM capability
SM351 Block Diagram
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