CS42L56 View Datasheet(PDF) - Cirrus Logic
Part Name
Description
MFG CO.
'CS42L56' PDF : 92 Pages View PDF
6.8 Class H Control (Address 08h)
7
ADPTPWR1
6
ADPTPWR0
5
Reserved
4
Reserved
CS42L56
3
CHGFREQ3
2
CHGFREQ2
1
CHGFREQ1
0
CHGFREQ0
6.8.1
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 39
6.8.2 Charge Pump Frequency
Sets the charge pump frequency on FLYN and FLYP.
CHGFREQ[3:0] N
0000
0
...
0101
5
...
1111
15
Formula:
Frequency = ------f-M-----C----L----K------
4 N + 2 ; where fMCLK is the frequency of the MCLK signal after the MCLKDIV2 circuit.
Notes:
1. The output THD+N performance improves at higher frequencies; power consumption increases at
higher frequencies.
6.9 Misc. Control (Address 09h)
7
DIGMUX
6
Reserved
5
Reserved
4
ANLGSFT
3
ANLGZC
6.9.1
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
62
DS851F2
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