I²S

The Inter-Integrated Circuit Sound (I2S) bus has three data bits: Serial Clock (SCK), Word Select Line (WS) and Multiplex Data Line (SD).

Application: Audio
Signal: SCK, WS, SD
Voltage: 2.0V and 2.4V

Recommended Debug Tools

TB3016E

TB3000 series Specifications PDF

MSO2116E (w/ analog channels)

MSO2000 series Specifications PDF

MSO3124V (w/ electrical validation)

MSO3000 series Specifications PDF

I2S Decode / Waveform

I²S Electrical Validation

Use an oscilloscope for I²S electrical validation to ensure compliance with defined specifications. After an extended burn-in test, the oscilloscope confirms that the electrical characteristics of the signal meet the required standards.

Electrical Validation Solution PDF

Protocol Quick Setup:

1. Click Quick Settings to select a protocol for logic analyzer capture.

2. Select I2S for decoding.

3. The system provides recommended settings for trigger type, sampling rate, voltage threshold, and channel settings.

4. Click the icon to access the Decode Settings screen.

Decode Settings:

Channel: Show the selected channels (CH0, CH1 and CH2) and set Data bits (16 bits).

Display the audio waveform: Click to display the audio waveform in the Waveform Window.

Playback: Click to display the audio from the speaker.

Save as WAV file: Click to save the data to a audio file(.wav) in the work directory.

Mode: I2S Justified/MSB Justified/LSB Justified/PCM/TDM.

Report: Select the column number.

I2S Decoding Examples