Figure 2-3: EVAL-AD2428WB1BZ Evaluation Board Example Slot Assignments
6. The ADAU1452 SigmaDSP on the master EVAL-AD2428WD1BZ board supplies the clock (SYNC) to the
AD2428W transceiver. For development of customized ADAU1452 audio flows, disable the automatic pro-
gramming of the ADAU1452 SigmaDSP during discovery. Right-click the ADAU1452 block and select Periph-
eral Properties in the A
2
B software schematics.
7. To test the PDM microphones on the slave1 EVAL-AD2428WB1BZ board, make the connections shown in
the Software Schematic for adi_a2b_3NodeSampleDemoConfig.dspproj A
2
B Example Project figure. Click RX1
in the A
2
B cell to change the input to PDM, as shown in the Changing AD2428W Pin Function from DRX1
to PDM1 figure.
The headphones connected to the master EVAL-AD2428WD1BZ board can be used to listen to the micro-
phone data coming from the slave1 EVAL-AD2428WB1BZ board.
Figure 2-4: Changing AD2428W Pin Function from DRX1 to PDM1
Using the Software
2–10
EVAL-AD2428WD1BZ A
2
B Evaluation Board Manual
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