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6.8.1
Control Register 1 Tab
The Transfer Mode control lets the user select between continuous data transfer mode or programming
mode. In the continuous data transfer mode, only audio data is sent and received through the serial audio
bus. In the programming mode, control data is sent and received through the serial audio bus. The Data
Format Mode, if set to 15 bits + 1, allows the codec to run in continuous mode and switch to
programming mode by setting the LSB of DIN to 1 to send control data. The USB-MODEVM Audio
Interface Configuration currently supports continuous and 16-bits audio data transfers. The Mic Bias sets
the voltage of the BIAS pin to 2.35V or 1.35V. The Selected Filter button allows the user to select
between an FIR filter or an IIR filter for the decimation/interpolation low-pass filter. The Loopback
switches toggle the analog or digital loopback on and off. The indicator below each switch will light when
on only if the register data sent by pressing the Program Device button is acknowledged.
SLAU229B – October 2007 – Revised August 2008
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Figure 6. Device Controls Tab
TLV320AIC12KEVMB-K and TLV320AIC14KEVMB-K User's Guide
Kit Operation
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