CS42L55 Datasheet, PDF (45/73 Pages) Cirrus Logic – Ultra Low Power, Stereo CODEC w/Class H Headphone Amp

6.5.2
32 kHz Sample Rate Group
Specifies whether or not the input/output sample rate is 8 kHz, 16 kHz or 32 kHz.
32kGROUP
0
1
Application:
8 kHz, 16 kHz or 32 kHz sample rate?
No
Yes
“Serial Port Clocking” on page 34
CS42L55
6.5.3
Internal MCLK/LRCK Ratio
Configures the internal MCLK/LRCK ratio.
RATIO[1:0]
00
01
10
11
Application:
Internal MCLK Cycles per LRCK
Reserved
125
Reserved
136
“Serial Port Clocking” on page 34
6.6 Class H Power Control (Address 06h)
7
Reserved
6
Reserved
5
ADPTPWR1
4
ADPTPWR0
3
Reserved
2
Reserved
1
Reserved
0
Reserved
6.6.1
Adaptive Power Adjustment
Configures how the power to the headphone and line amplifiers adapts to the output signal level.
ADPTPWR[1:0]
00
01
10
11
Application:
Power Supply
Adapted to volume setting; Voltage level is determined by the sum of the relevant volume settings
Fixed - Headphone and Line Amp supply = +/-VCP/2
Fixed - Headphone and Line Amp supply = +/-VCP
Adapted to Signal; Voltage level is dynamically determined by the output signal
“Class H Amplifier” on page 27
6.7 Miscellaneous Control (Address 07h)
7
DIGMUX
6
Reserved
5
Reserved
4
Reserved
3
ANLGZC
6.7.1
Digital MUX
Selects the signal source for the ADC serial port.
DIGMUX
0
1
SDOUT Signal Source
ADC
DSP Mix
2
DIGSFT
1
Reserved
0
FREEZE
DS773F1
45