TLV320AIC3109EVM Software
29
SLAU738 – September 2017
Copyright © 2017, Texas Instruments Incorporated
TLV320AIC3109EVM-K
Figure 26. DAC/Line Outputs Tab
4.10.1
DAC Controls
On the left side of this tab are controls for the DAC.
In similar fashion as the ADC, the DAC controls are set to allow control over the powering and volume
setting of the DAC. The DAC volume level can be set by using the
Volume
knob.
The data from the audio serial interface used by the DAC is selected using the drop-down boxes under
the
DAC Datapath
. The DAC channel can be selected to be off, use left channel data, use right channel
data, or use a mono mix of the left and right data.
Analog audio coming from the DACs is routed to outputs using the
Output Path
controls in DAC control
panel. The DAC output can be mixed with the analog inputs (PGA_L, PGA_R) and routed to the Line or
High Power outputs using the mixer controls for these outputs on this tab (for the line outputs) or on the
High Power Outputs tab (for the high power outputs). If the DAC is to be routed directly to either the Line
or HP outputs, these can be selected as choices in the
Output Path
control. Note that if the Line or HP
outputs are selected as the Output Path, the mixer controls on this tab and the High Power Output tabs
have no effect.
4.10.2
Line Output Mixers
On the right side of this tab are horizontal panels where the analog output mixing functions for the line
outputs are located.
Each line output master volume is controlled by the knob at the far right of these panels, below the line
output labels. The output amplifier gain can be muted or set at a value between 0 and 9 dB in 1-dB steps.
Power/Enabled status for the line output can also be controlled using the button below this master output
knob (
Powered Up
).
If the DAC
Output Path
control is set to
Mix with Analog Inputs
, the knobs in each panel can be used to
set the individual level of signals routed and mixed to the line output. PGA_L, PGA_R, and DAC_L levels
can each be set to create a custom mix of signals presented to that particular line output.
NOTE:
If the DAC
Output Path
control is set to anything other than
Mix with Analog Inputs
, these
controls have no effect.
