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Posts Tagged ‘i2s’

Aud-I/O I2S audio breakout

Tuesday, November 13th, 2012

Bertho is working on a breakout board for the WM8782 I2S ADC and the WM8523 I2S DAC. The boards are intended to be interfaced with an ARM micro-controller. I am working on a project that requires some real audio and I always wanted to play with I2S (attached to an...

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Posted in ARM, project logs | 5 Comments »

App note: Common audio inter-IC protocols

Sunday, August 12th, 2012

Here is a design article from EETimes about the common inter-IC audio protocols. The article covers the traditional audio signal chain, fully digital audio signal chains, I2S protocol, and PDM. As audio integrated-circuit (IC) designs move to finer geometries, it becomes more difficult to design, and less cost-effective to integrate,...

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Posted in app notes | 1 Comment »

The point of I2C NACKs

Monday, August 17th, 2009

The logic analyzer output above (top continues on the bottom) shows the Bus Pirate I2C address scan function. The Bus Pirate sends a DS1307 I2C read address. After the DS1307 ACKnowledges the address (bit 9), it immediately starts sending data to the Bus Pirate and ignores the I2C STOP sequence...

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Posted in Bus Pirate, Development | No Comments »

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