Analog Devices EVAL-ADUSB2EBZ User Manual page 8

UG-477
Figure 22. Output Cells
Connect the cells together by left-clicking a blue output dot and
dragging to the green output dot of the next cell, connecting the
Input 2 to OUT0 and Input 3 to OUT1 (see Figure 23).
Figure 23. Connected Signal Flow
The basic signal flow is now complete with the stereo I/O.
Add Volume Control
To add volume control via the VOL− and VOL+ buttons, add
jumpers to S5 and S6 on J9 (see Figure 24).
Figure 24. Jumpers for Volume Pushbuttons
Navigate to the Hardware Configuration tab. In the bottom left
corner, the IC 1 – ADAU1772 Register Control tab is seen (see
Figure 25).
Figure 25. ADAU1772
Click it and find the Output/Serial Port tab in the top right
corner. In the bottom left corner of the Output/Serial Port tab,
Register Control Tab
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Evaluation Board User Guide
the Push Button Vol section is located. Locate the drop-down
menu for Converters Controlled by PushButton Volume: and
change its value to All ADCs (see Figure 26).
Figure 26. (Output/Serial Port Tab)
Navigate to the Pin/Pad Control tab. In the Pin Modes section,
change the value of DAC_SDATA/MP0 to Push-button volume
down and the value of ADC_SDATA0/PDMOUT/MP1 to
Push-button volume up (see Figure 27).
Figure 27. Pin/Pad Control tab
The schematic is ready to be compiled and downloaded to the
evaluation board.