網(wǎng)絡(luò)收音機(jī)(iRadio)應(yīng)用簡介

網(wǎng)絡(luò)收音機(jī)(iRadio)是我們合作伙伴RnD的一個案例，他使用了一顆低端的MCU來處理音頻解碼，用W5100來處理網(wǎng)絡(luò)網(wǎng)絡(luò)音頻流數(shù)據(jù)的接受。主芯片是ATMEL AVR32, 服務(wù)器采用了DLNA公開服務(wù)器程序。

最終實(shí)現(xiàn)了音頻流的網(wǎng)絡(luò)播放功能。

其示意圖和主要配置如下。

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.