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2. The TPA2054D4 software graphical user interface displays as shown in Figure 5 .
Figure 5. TPA2054D4EVM Graphical User Interface
Note: The TPA2054D4 powers up with the amplifiers disabled, muted, and the gain set to the
minimum. To hear an output, enable and remove the mute for each channel, plus the gain to
a higher value.
3. Follow these steps only if using a PC is both the music source and the computer on which the
TPA2054D4 GUI is run.
When using WinXP, if after initially installing the software, the PC does not play music out of the
headphone jack:
6 TPA2054D4EVM SLOU249 – April 2009
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