CS42L52 Datasheet, PDF (56/82 Pages) Cirrus Logic – Low Power, Stereo CODEC w/Headphone & Speaker Amps

CS42L52
6.16.3
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
...
10 1000
...
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
Note: The PGAxVOL bits are ignored when the PASSTHRUx bit (“Passthru Analog” on page 52) is en-
abled.
6.17 Passthru x Volume: PASSAVOL (Address 14h) & PASSBVOL (Address 15h)
7
6
5
4
3
2
1
0
PASSxVOL7 PASSxVOL6 PASSxVOL5 PASSxVOL4 PASSxVOL3 PASSxVOL2 PASSxVOL1 PASSxVOL0
6.17.1 Passthru x Volume
Sets the volume/gain of the signal routed from the PGA to the headphone/line output.
PASSxVOL[7:0]
0111 1111
...
0001 1000
...
0000 0001
0000 0000
11111 1111
...
1000 1000
...
1000 0000
Step Size:
Application:
Gain
12 dB
...
12 dB
...
+0.5 dB
0 dB
-0.5 dB
...
-60.0 dB
...
-60.0 dB
0.5 dB (approximate)
“Analog In to Analog Out Passthru” on page 32
Notes:
1. This register is ignored when the PASSTHRUx bit (“Passthru Analog” on page 52) is disabled.
2. The step size may deviate from 0.5 dB at settings below -40 dB. Code settings 0x95, 0xA1, 0xAD and
0xB9 are not guaranteed to be monotonic.
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DS680A1