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CS42L52 датащи(PDF) 72 Page - Cirrus Logic

номер детали CS42L52
подробное описание детали  Low Power, Stereo CODEC w/Headphone & Speaker Amps
PDF  82 Pages
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производитель  CIRRUS [Cirrus Logic]
домашняя страница  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

CS42L52 датащи(HTML) 72 Page - Cirrus Logic

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72
DS680A1
CS42L52
6.37.3 VP Reference
Sets the desired VP reference used for battery compensation.
6.38 VP Battery Level (Address 30h) (Read Only)
6.38.1 VP Voltage Level (Read Only)
Indicates the unsigned VP voltage level.
6.39 Speaker Status (Address 31h) (Read Only)
6.39.1 Speaker Current Load Status (Read Only)
Indicates whether or not any of the speaker outputs is shorted to ground.
VPREF[3:0]
Desired VP used to calculate the required attenuation on the speaker output:
(for VA = 1.8 V)
0000
1.5 V
0001
2.0 V
0010
2.5 V
0011
3.0 V
0100
3.5 V
0101
4.0 V
0110
4.5 V
0111
5.0 V
(for VA = 2.5 V)
1000
1.5 V
1001
2.0 V
1010
2.5 V
1011
3.0 V
1100
3.5 V
1101
4.0 V
1110
4.5 V
1111
5.0 V
Application:
“VP Battery Compensation” on page 33
76
543
21
0
VPLVL7
VPLVL6
VPLVL5
VPLVL4
VPLVL3
VPLVL2
VPLVL1
VPLVL0
VPLVL[7:0]
VP Voltage
...
0101 1110
3.0 V (for VA = 2.0 V); apply formula using actual VA voltage to calculate VP voltage.
...
0111 0010
3.7 V (for VA = 2.0 V); apply formula using actual VA voltage to calculate VP voltage.
...
Formula:
VP Voltage = (Binary representation of VPLVL[7:0]) * VA / 63.3
76
543
21
0
Reserved
Reserved
SPKASHRT
SPKBSHRT
SPKR/HP
Reserved
TWRN
TERR
SPKxSHRT
Speaker Output Load
0
No overload detected
1
Overload detected



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