Cirrus-logic CDB43L22 Manual do Utilizador descarregar pdf (Página 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

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