CS42L55 Datasheet, PDF (60/73 Pages) Cirrus Logic – Ultra Low Power, Stereo CODEC w/Class H Headphone Amp

6.25 ADC & PCM Channel Mixer (Address 20h)
7
PCMBSWP1
6
PCMBSWP0
5
PCMASWP1
4
PCMASWP0
3
ADCBSWP1
2
ADCBSWP0
CS42L55
1
ADCASWP1
0
ADCASWP0
6.25.1 PCM Mix Channel Swap
Configures a mix/swap of the PCM Mix to the headphone/line outputs.
PCMxSWP[1:0]
00
01
10
11
PCM Mix to HP/LINEOUTA
Left
(Left + Right)/2
Right
PCM Mix to HP/LINEOUTB
Right
(Left + Right)/2
Left
6.25.2 ADC Mix Channel Swap
Configures a mix/swap of the ADC Mix to the headphone/line outputs. .
ADCxSWP[1:0]
00
01
10
11
ADC Mix to HP/LINEOUTA Channel
Left
(Left + Right)/2
Right
ADC Mix to HP/LINEOUTB Channel
Right
(Left + Right)/2
Left
6.26 Limiter Min/Max Thresholds (Address 21h)
7
LMAX2
6
LMAX1
5
LMAX0
4
CUSH2
3
CUSH1
2
CUSH0
1
Reserved
0
Reserved
6.26.1 Limiter Maximum Threshold
Sets the maximum level, below full-scale, at which to limit and attenuate the output signal at the attack
rate (LIMARATE - “Limiter Release Rate” on page 62).
LMAX[2:0]
000
001
010
011
100
101
110
111
Application:
Threshold Setting
0 dB
-3 dB
-6 dB
-9 dB
-12 dB
-18 dB
-24 dB
-30 dB
“Limiter” on page 32
Note: Bass, Treble and digital gain settings that boost the signal beyond the maximum threshold may
trigger an attack.
60
DS773F1