CS43L22 datasheet(27/68 Pages) CIRRUS

27 / 68 page

DS792F1

CS43L22

Confidential Draft

10/7/08

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 46

“Speaker Mute 50/50 Control” on page 47

“Speaker MONO Control” on page 47

“Speaker Volume Control” on page 53

“Speaker Channel Swap” on page 46

“Speaker Volume Setting B=A” on page 46

“Battery Compensation” on page 57

“VP Reference” on page 58

“VP Voltage Level (Read Only)” on page 58

“Speaker Power Control” on page 39

“Speaker Current Load Status (Read Only)” on page 58

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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