CS42L55 Datasheet, PDF (49/73 Pages) Cirrus Logic – Ultra Low Power, Stereo CODEC w/Class H Headphone Amp

6.11 PGA x MUX, Volume:
PGA A (Address 0Bh) & PGA B (Address 0Ch)
7
BOOSTx
6
PGAxMUX
5
PGAxVOL5
4
PGAxVOL4
3
PGAxVOL3
6.11.1 Boostx
Configures a +20 dB boost on channel x.
BOOSTx
0
1
+20 dB Boost
No boost applied
+20 dB boost applied
2
PGAxVOL2
CS42L55
1
PGAxVOL1
0
PGAxVOL0
6.11.2 PGA x Input Select
Selects the specified analog input signal into PGA channel x.
PGAxMUX
0
1
Selected Input to PGAx
AIN1x
AIN2x
Note: For pseudo-differential inputs, the CODEC automatically chooses the respective pseudo-ground
(AIN1REF or AIN2REF) for each input selection.
6.11.3 PGAx Volume
Sets the volume/gain of the Programmable Gain Amplifier (PGA).
PGAxVOL[5:0]
01 1111
...
01 1000
...
00 0001
00 0000
11 1111
...
11 0100
...
10 0000
Step Size:
Volume
12 dB
...
12 dB
...
+0.5 dB
0 dB
-0.5 dB
...
-6.0 dB
...
-6.0 dB
0.5 dB
Notes:
1. Refer to Figure 23 and Figure 24 on page 69 for differential and integral nonlinearity (DNL and INL).
DS773F1
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