Datasheet

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EVM Position 2
EVM Position 1
TLV320AIC31EVM
Control Interface
TLV320AIC31
TAS1020B
USB 8051
Microcontroller
USB
SPI, I C
2
I S, AC97
2
Audio Interface
Kit Operation
Figure 1. TLV320AIC31EVM-PDK Block Diagram
The USB-MODEVM Interface board is intended to be used in USB mode, where control of the installed
EVM is accomplished using the onboard USB controller device. Provision is made, however, for driving all
the data buses (I
2
C, SPI™, I
2
S/AC97) externally. The source of these signals is controlled by SW2 on the
USB-MODEVM. Refer to Table 6 for details on the switch settings.
8 TLV320AIC31EVM and TLV320AIC31EVM-PDK User's Guide SBAU115 – November 2005