Microphones; Analogue Output - XMOS xCORE-200 Multi-channel Audio board Design Manual

USB Audio Design Guide

2.2.1 Microphones

The xCORE Microphone Array board features 7 MEMS microphones with PDM (Pulse
Density Modulation) output.
Figure
MIC5
Figure 2:
xCORE-200
Microphone
Array Board
Microphone
Arrangement

2.2.2 Analogue Output

As well at 7 PDM microphones the board also provides a stereo DAC (CS43L21)
with integrated headphone amplifier. The CS43L21 is connected to the xCORE-200
through an I2S interface and is configured using an I2C interface.
XM0088546.1
2 shows the microphone arrangement on the board.
MIC6
MIC4
xCORE-200
XUF216
MIC0
A B C
MIC1
D
MIC3
11/110
MIC2