EVAL-AD2428WB1BZ A²B Evaluation Board User Guide Engineer-to-Engineer Note EE-419
●This evaluation board provides A2B bus-powered slave node functionality for an A2B network, including support for both PDM microphone input and serial audio via an I2S/TDM interface. Bus-powered slave nodes derive power from the bias voltage on the A2B wires.
●An audio codec/SigmaDSP (ADAU1761) with stereo analog ADC input and two digital MEMS microphones with PDM output can feed the upstream or downstream slots on the A2B bus while the DAC outputs of the codec/SigmaDSP may use or consume upstream or downstream slots on the A2B bus. The SigmaDSP block allows optional digital pre- or post-processing.
●A pushbutton and LED are available for interactive control and response communication over the A2B bus.
●The standard 0.1 inch (2.54mm) pin distance, dual-row header (unpopulated) provides direct connectivity to I2S/TDM and ground signals for testing or interfacing to other devices after discovery. All power supplies are easily accessible at surface-mount test points located on the bottom of the board. For the board schematics, assembly/layout files, and bill of materials (BOM), see the EVAL-AD2428WB1BZ Hardware Design Files ZIP archive associated with this EE-note[3].
■Features
●Bus-Powered A2B®Slave Transceiver(AD2428W)
●Stereo Audio Codec/SigmaDSP®(ADAU1761)
●Two Stereo MEMS Microphones
●EEPROM
●LED and Push-Button on GPIO/IRQ
●Test Points for Digital Signals and AnalogInputs
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User's Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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2019/10/9 |
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Rev.1 |
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EE-419 |
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499 KB |
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