TLV320AIC3109EVM Software
21
SLAU738 – September 2017
Copyright © 2017, Texas Instruments Incorporated
TLV320AIC3109EVM-K
4.7
AGC Tab
The
AGC
tab consists a set of controls to configure the automatic Gain Control (AGC) of the
TLV320AIC3109-Q1. The AGC function is described in
TLV320AIC3109-Q1 Automotive, Low-Power, 96-
. The default
AGC
tab configuration is shown in
Figure 13. AGC Tab
The AGC can be enabled using the
Enable
button.
Target
gain (dB),
Attack
time (milliseconds),
Decay
time (milliseconds), and the
Maximum PGA Gain Allowed
(dB) can all be set, respectively, using the four
corresponding knobs.
The TLV320AIC3109-Q1 allows for the Attack and Decay times of the AGC to be set up in two different
modes, standard and advanced. The
AGC Settings
button determines the mode selection. The
Standard
mode provides several preset times that can be selected by adjustments made to the
Attack
and
Decay
knobs. If finer control over the times is required, then the
Advanced
mode should be selected. When the
Advanced
mode is enabled, two tabs should appear that allow separate, advanced control of the Attack
and Delay times of the AGC (see
). These options allow selection of the base time as well as a
multiplier to achieve the actual times shown in the corresponding text box. The
Use advanced
button
should be enabled to program the registers with the correct values selected via the pull-down options for
base time and multiplier.
Figure 14. Advanced AGC settings