CS43L22 View Datasheet(PDF) - Cirrus Logic
Part Name
Description
MFG CO.
'CS43L22' PDF : 66 Pages View PDF
Confidential Draft
3/4/10
CS43L22
4.5 PWM Outputs
Note: The PWM speaker amplifiers should not be used in the 384x MCLK modes (18.4320 and
16.9344 MHz).
SPKAMUTE
SPKBMUTE
MUTE50/50
SPKMONO
SPKSWAP
SPKB=A
SPKAVOL[7:0]
SPKBVOL[7:0]
+0dB/-102dB
0.5dB steps
BATTCMP
VPREF[3:0]
VPLVL[7:0]
Battery
Compensation
from DSP
Engine
VOL
PWM
Modulator
Gate
Drive
PDN_SPKA[1:0]
PDN_SPKB[1:0]
SPKASHRT
SPKBSHRT
Figure 10. PWM Output Stage
Short
Circuit
Referenced Control Register Location
PWM Control
SPKxMUTE ......................... “Speaker Mute” on page 45
MUTE50/50 ......................... “Speaker Mute 50/50 Control” on page 46
SPKMONO .......................... “Speaker MONO Control” on page 46
SPKxVOL[7:0] ..................... “Speaker Volume Control” on page 52
SPKSWAP........................... “Speaker Channel Swap” on page 45
SPKB=A .............................. “Speaker Volume Setting B=A” on page 45
BATTCMP ........................... “Battery Compensation” on page 56
VPREF[3:0] ......................... “VP Reference” on page 57
VPLVL[7:0] .......................... “VP Voltage Level (Read Only)” on page 57
PDN_SPKx[1:0]................... “Speaker Power Control” on page 38
SPKxSHRT.......................... “Speaker Current Load Status (Read Only)” on page 57
+
-
A
+
-
B
Speaker
Outputs
26
DS792F2
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