AK4955 Datasheet, PDF (49/117 Pages) Asahi Kasei Microsystems – 24bit Stereo CODEC with MIC/SPK/Cap-less VIDEO-AMP/ LDO & DSP

IREF7-0 bits GAIN (dB)
Step
F1H
+36.0
F0H
+35.625
EFH
+35.25
:
:
E1H
+30.0
0.375dB ^(default)
:
:
92H
+0.375
91H
0.0
90H
−0.375
:
:
2H
−53.625
1H
−54.0
0H
MUTE
Table 32. Reference Level of ALC Recovery Operation for Recoding
OREF5-0 bits GAIN (dB)
Step
3CH
+36.0
3BH
+34.5
3AH
+33.0
:
:
28H
+6.0
1.5dB
(default)
:
:
25H
+1.5
24H
0.0
23H
−1.5
:
:
2H
−51.0
1H
−52.5
0H
−54.0
Table 33. Reference Level of ALC Recovery Operation for Playback
RFST1 bit
RFST0 bit
Recovery Speed
0
0
Double
0
1
Quad
(default)
1
0
8times
1
1
16times
Table 34. Fast Recovery Speed Setting (FRN bit = “0”)
[AK4955]
MS1343-E-00
- 49 -
2011/12