W5300 + I2S Audio Streaming Architecture Improvement
For Embedded Developers Working on Real-Time Audio over Ethernet
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Components
Hardware components
WIZnet - W5300
x 1
Project description
🔍 Original Architecture: Command-Driven Direct I2S Transmission In the initial system, audio data sent from a PC is received by the W5300 Ethernet controller. The MCU then immediately forwards the data to the I2S peripheral via i2sWrite(). This approach tightly couples reception and playback. ✅ Pros: Simple and easy to implement Minimal latency in ideal conditions ❌ Cons: Tightly coupled timing: audio data must be written exactly when I2S is ready Risk of underrun or data loss, especially if transmission is delayed Compressed audio codecs like OPUS or ADPCM introduce decoding latency →…
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