Texas Instruments TAS5731EVM, User Manual, Page: 9 / 26

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Using the GUI Software
3.1 Setting the PPSI2C Environment Variable
The I
2
C slave address of TAS5731 can either be 0x34 or 0x36 depending on the state of Pin-14 (A-SEL).
Slave address is 0x34 when A-SEL is low and 0x36 when it is high. Slave-address information for GUI
control is set using an environment variable, as described in the following steps:
1. Open the System-Properties window (right-click on My Computer Icon and click Properties). This
brings up the properties window. Select the Advanced tab and click on Environment variables as
shown in
Figure 8 .
Figure 8. System Properties Window
2. In the Environment Variables window, click on ‘NEW’ in the user variable section.
3. In the New User Variable Window, enter the text PPSI2C as variable name, and 34 as the variable
value.
9 SLOU331A – December 2011 – Revised August 2014 TAS5731EVM Evaluation Module
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