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6.3 USB-MODEVM Interface Board
Kit Operation
The software should automatically find the TLV320AIC31EVM, and a screen similar to the one in Figure 2
should appear.
Figure 2. Default Software Screen
The simple diagram shown in Figure 1 shows only the basic features of the USB-MODEVM Interface
board. The board is built around a TAS1020B streaming audio USB controller with an 8051-based core.
The board features two positions for modular EVMs, or one double-wide serial modular EVM may be
installed.
Since the TLV320AIC31EVM is a double-wide modular EVM, it is installed with connections to both EVM
positions, which connects the TLV320AIC31 digital control interface to the I
2
C port realized using the
TAS1020B, as well as the TAS1020B digital audio interface.
As configured from the factory, the board is ready to use with the TLV320AIC31EVM. To view all the
functions and configuration options available on the USB-MODEVM board, see the USB-MODEVM
Interface Board schematic in Appendix B .
10 TLV320AIC31EVM and TLV320AIC31EVM-PDK User's Guide SBAU115 – November 2005