Cirrus Logic CDB43L22 - Manual (Page 15)

DS792DB1 15
CDB43L22
4.4 Analog and PWM Output Volume Tab
The “Analog and PWM Output Volume” tab provides high-level control of the CS43L22 PWM outputs,
HP/Line output volume levels and charge pump frequency. This tab also provides controls for the PWM out-
put including speaker volume and PWM gain. Temperature and Battery monitoring controls for the
PWM/Speaker outputs are also on this tab. Status text detailing the CS43L22’s specific configuration is
shown in read-only edit boxes, in parenthesis or appears directly below the associated control. This text will
change depending on the setting of the associated control. A description of each control group is outlined
below. See the CS43L22 datasheet for complete register descriptions.
Headphone/Line Analog Output - Volume controls and adjustments for the DAC channel (outside of the
DSP). The modulation index and gain settings make up the parameters that determine the full scale head-
phone/line output level.
PWM Output - Volume, mute, power down and other functional controls for the PWM speaker outputs.
Temperature and Battery Monitor/Control - Battery Compensation, Thermal Foldback, Temperature Shut-
down and Battery Monitor for the PWM/Speaker outputs.
Figure 7. Analog and PWM Output Volume Tab