Texas Instruments TLV320AIC3111 Evaluation Module TLV320AIC3111EVM-K TLV320AIC3111EVM-K Datenbogen
Produktcode
TLV320AIC3111EVM-K
2.6.9
Digital Volume Control and DRC
TLV320AIC3111
and the playback use case
.
EVM + PC
www.ti.com
The TLV320AIC3111 has digital volume control and dynamic range compression modules for each DAC
channel. Each is accessible by a active objects labeled DVol within the block diagram for the full
channel. Each is accessible by a active objects labeled DVol within the block diagram for the full
Clicking on the DVol active object opens the DAC Vol dialog, which contains a slider to set the digital
volume and several options. Checking the DRC option reveals the DRC transfer function.
volume and several options. Checking the DRC option reveals the DRC transfer function.
Figure 11. DRC Transfer Function and DRC Dialog
The horizontal axis of the DRC transfer function shows the input to the DRC and the vertical axis shows
the output of the DRC. The green line shows the gain below the DRC threshold, the magenta colored
horizontal line shows the DRC threshold and the red line shows the gain above the DRC threshold.
the output of the DRC. The green line shows the gain below the DRC threshold, the magenta colored
horizontal line shows the DRC threshold and the red line shows the gain above the DRC threshold.
The DRC transfer function will change depending on the digital volume setting and the DRC threshold.
Click on the DRC transfer function to reveal the DRC dialog, which contains a slider to change the DRC
threshold.
threshold.
TLV320AIC3111 EVM
16
SLAU285 – July 2009