6 power down line output, 7 power down headphone, 1 charge pump frequency – Cirrus Logic CS42L73 User Manual
Page 85: 2 adaptive power adjustment, Adptpwr[2:0] bits found in, Charge pump frequency and class h con, P 85, Cs42l73
DS882F1
85
CS42L73
6.6.6
Power Down Line Output
Configures the Output Driver power state. If the Line Output Driver or Headphone Driver is powered up,
the DAC that drives them will be powered up; otherwise, it is powered down.
6.6.7
Power Down Headphone
Configures the Headphone Driver power state. If the Line Output Driver or Headphone Driver is powered
up, the DAC that drives them will be powered up; otherwise, it is powered down.
6.7
Charge Pump Frequency and Class H Configuration (Address 09h)
6.7.1
Charge Pump Frequency
Sets the charge pump frequency on FLYN and FLYP.
Note: The output THD+N performance improves at higher frequencies; power consumption increases
at higher frequencies.
6.7.2
Adaptive Power Adjustment
Configures how the power to the Headphone and Line Output amplifiers adapts to the output signal level.
PDN_LO
Line Output Driver Status
0 Powered
Up
1
Powered Down
PDN_HP
Headphone Driver Status
0 Powered
Up
1
Powered Down
7
6
5
4
3
2
1
0
CHGFREQ3
CHGFREQ2
CHGFREQ1
CHGFREQ0
Reserved
ADPTPWR2
ADPTPWR1
ADPTPWR0
CHGFREQ[3:0]
N
0000
0
...
0101
5
...
1111
15
Formula:
Frequency = f
MCLK
/ [4x(N+2)]
ADPTPWR[2:0]
Power Supply
000
Adapted to volume setting; Voltage level is determined by the sum of the relevant volume settings
001
Fixed. Headphone and Line1&2 Amp supply = ±VCP
010
Fixed. Headphone and Line1&2 Amp supply = ±VCP/2
011
Fixed. Headphone and Line1&2 Amp supply = ±VCP/3
100
Reserved
101
Reserved
110
Reserved
111
Adapted to Signal; Voltage level is dynamically determined by the output signal