DS680DB1

11

CDB42L52

2.5

Analog and PWM Output Volume Tab

The “Analog and PWM Output Volume” tab provides high-level control of the CS42L52 DAC output analog

MUX, Input pass-through volume, HP/Line output volume levels and charge pump frequency. This tab also

provides controls for the PWM output including speaker volume, PWM gain and modulation index. Temper-

ature and Battery monitoring controls for the PWM/Speaker outputs are also on this tab. Status text detailing

the CODEC’s specific configuration is shown in read-only edit boxes, in parenthesis or appears directly be-

low the associated control. This text will change depending on the setting of the associated control. A de-

scription of each control group is outlined below (register descriptions are in the CS42L52 data sheet).

Headphone/Line Analog Output - Digital and analog volume controls and adjustments for the DAC channel

(outside of the SPE) and for the input pass-through. Gain, Modulation Index, current limit and charge pump

frequency adjustment are also provided and affect the FS output levels.

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 5. Analog and PWM Output Volume Tab