Cirrus Logic CS43L22 - Manual (Page 56)

56 DS792F2
CS43L22
Confidential Draft
3/4/10
7.26.3 PCMx Overflow (Read Only)
Indicates the over-range status in the PCM data path.
7.27 Battery Compensation (Address 2Fh)
7.27.1 Battery Compensation
Configures automatic adjustment of the speaker volume when VP deviates from VPREF[3:0].
7.27.2 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, re-
gardless of the VPMONITOR setting. Conversely, when BATTCMP is disabled, the ADC may be en-
abled 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.
PCMxOVFL PCM Overflow Status:
0
No digital clipping has occurred in the data path of the PCM ( “PCM Channel x Volume” on page 47 ) of the
DSP.
1 Digital clipping has occurred in the data path of the PCM of the DSP.
Application: “DSP Engine” on page 21
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 27
VPMONITOR VP ADC Status
0 Disabled
1 Enabled