CS43L22 datasheet(26/66 Pages) CIRRUS

26 / 66 page

DS792F2

CS43L22

Confidential Draft

3/4/10

4.5

PWM Outputs

Note:

The PWM speaker amplifiers should not be used in the 384x MCLK modes (18.4320 and

16.9344 MHz).

Referenced Control

PWM Control

SPKxMUTE .........................

MUTE50/50 .........................

SPKMONO ..........................

SPKxVOL[7:0] .....................

SPKSWAP...........................

SPKB=A ..............................

BATTCMP ...........................

VPREF[3:0] .........................

VPLVL[7:0] ..........................

PDN_SPKx[1:0]...................

SPKxSHRT..........................

“Speaker Mute” on page 45

“Speaker Mute 50/50 Control” on page 46

“Speaker MONO Control” on page 46

“Speaker Volume Control” on page 52

“Speaker Channel Swap” on page 45

“Speaker Volume Setting B=A” on page 45

“Battery Compensation” on page 56

“VP Reference” on page 57

“VP Voltage Level (Read Only)” on page 57

“Speaker Power Control” on page 38

“Speaker Current Load Status (Read Only)” on page 57

VOL

PWM

Modulator

SPKAMUTE

SPKBMUTE

MUTE50/50

SPKMONO

SPKSWAP

SPKB=A

SPKAVOL[7:0]

SPKBVOL[7:0]

+0dB/-102dB

0.5dB steps

PDN_SPKA[1:0]

PDN_SPKB[1:0]

Short

Circuit

SPKASHRT

Battery

Compensation

BATTCMP

VPREF[3:0]

VPLVL[7:0]

SPKBSHRT

Gate

Drive

from DSP

Engine

Speaker

Outputs

Figure 10. PWM Output Stage

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