Cirrus Logic CS42L52 - Manual (Page 71)

DS680F2 71
CS42L52
3/1/13
6.36.2 DSP Engine Overflow (Read Only)
Indicates the over-range status in the DSP data path.
6.36.3 PCMx Overflow (Read Only)
Indicates the over-range status in the PCM mix data path.
6.36.4 ADCx Overflow (Read Only)
Indicates the over-range status in the ADC signal path.
6.37 Battery Compensation (Address 2Fh)
6.37.1 Battery Compensation
Configures automatic adjustment of the speaker volume when VP deviates from VPREF[3:0].
6.37.2 VP Monitor
Configures the internal ADC that monitors the VP voltage level.
Notes:
1. The internal ADC that monitors the VP supply is enabled automatically when BATTCMP is enabled,
regardless of the VPMONITOR setting. Conversely, when BATTCMP is disabled, the ADC may be
enabled by enabling VPMONITOR; this provides a convenient battery monitor without enabling
battery compensation.
2. When enabled, VPMONITOR remains enabled regardless of the PDN bit setting.
DSPxOVFL DSP Overflow Status:
0 No digital clipping has occurred in the data path after the DSP.
1 Digital clipping has occurred in the data path after the DSP.
Application: “Analog Outputs” on page 28
PCMxOVFL PCM Overflow Status:
0
No digital clipping has occurred in the data path of the PCM mix ( “PCM Mixer Channel x Volume” on page 58 )
of the DSP.
1 Digital clipping has occurred in the data path of the PCM mix of the DSP.
Application: “Analog Outputs” on page 28
ADCxOVFL ADC Overflow Status:
0 No clipping has occurred anywhere in the ADC signal path.
1 Clipping has occurred in the ADC signal path.
Application: “Analog Inputs” on page 25
7 6 5 4 3 2 1 0
BATTCMP VPMONITOR Reserved Reserved VPREF3 VPREF2 VPREF1 VPREF0
BATTCMP Automatic Battery Compensation
0 Disabled
1 Enabled
Application: “Maintaining a Desired Output Level” on page 33
VPMONITOR VP ADC Status
0 Disabled
1 Enabled