4.5
Audio Interface Tab
TLV320AIC3107EVM Software
www.ti.com
Figure 8. Audio Interface Tab
The Audio Interface tab (
Figure 8
) allows configuration of the audio digital data interface to the
TLV320AIC3107.
The interface mode can be selected using the
Audio Serial Data Mode
control—selecting either I
2
S
mode, DSP mode, or Right- or Left-Justified modes. Word length can be selected using the
Audio Serial
Word Length
control, and the bit clock rate can also be selected using the
Bit Clock Mode
rate control.
The
Audio Data Word Offset
, used in TDM mode (see the
product data sheet
) also can be selected on
this tab.
Along the bottom of this tab are controls for choosing the
BLCK
and
WCLK
as being either inputs or
outputs. With the codec configured in
Slave
mode, both the BCLK and WCLK are set to inputs. If the
codec is in
Master
mode, then BCLK and WCLK are configured as outputs. Additionally, two buttons
provide the options for 3-stating the DOUT line when no valid data is available and for transmitting BLCK
and WCLK when the codec is powered down.
Re-synchronization of the audio bus is enabled using the controls in the lower right corner of this screen.
Re-synchronization is done if the group delay changes by more than
±
FS/4 for the ADC or DAC sample
rates (see the
TLV320AIC3107
data sheet). The channels can be soft-muted when doing the
Re-synchronization if the
Soft Mute
button is enabled.
The default mode for the EVM is configured as 44.1-kHz, 16-bit, I
2
C words, and the codec is a slave
(BCLK and WCLK are supplied to the codec externally). For use with the PC software and the
USB-MODEVM, the default settings must be used; no changes to the software are required.
TLV320AIC3107EVM-K
14
SLAU261 – November 2008
Submit Documentation Feedback
