网络收音机(iRadio)是我们合作伙伴RnD的一个案例，他使用了一颗低端的MCU来处理音频解码，用W5100来处理网络网络音频流数据的接受。主芯片是ATMEL AVR32, 服务器采用了DLNA公开服务器程序。
最终实现了音频流的网络播放功能。
其示意图和主要配置如下。
主要硬件配置：
Hardware Specifications:
- AVR32 for MP3 and WMA decoding
- W5100 10/100Mbps Ethernet Controller with Network Protocols
- 1MByte SDRAM for audio buffering
- 2.4” color TFT (320x240)
- DC 5V input for core, DC12 input for Audio Amplifier
BOM List:
- W5100 + RJ45
- AVR32 or similar
- SDRAM 1MByte
- 2.4” TFT (2.2”)
- Power and Misc
- Audio Amplifier (about 20W)
Features:
- Local playback on SD Card (pending, waiting for Atmel)
- Internet Radio with MP3 (working now) and WMA format (debugging)
- Download Station lists from Portal in XML format
- DLNA Renderer to play audio streamed from DLNA server
- Server format:
• HTTP: working now
• MMS: implementing
• RTSP: planned
Applications:
- Internet Radio, with DLNA Renderer
- Embedded with other AV system, (no need to count TFT), such as Boom box, Photo frame, DVB, DVD…
even we could share the SoC in the system, for example, in DVD; we just need to add W5100 + RJ45 to have same functions.
