AK4950 Datasheet, PDF (51/106 Pages) Asahi Kasei Microsystems – 24bit Stereo CODEC with MIC/SPK/Cap-less VIDEO-AMP & mini DSP

[AK4950]
3. The Volume at ALC Operation
The volume value during ALC operation is reflected in VOL7-0 bits. It is possible to check the current volume by reading
the register value of VOL7-0 bits.
VOL7-0 bits
EDH
E9H
E5H
E1H
DDH
D9H
D5H
D1H
CDH
C9H
C5H
C1H
BDH
B9H
B5H
B1H
ADH
A9H
A5H
A1H
9DH
99H
95H
91H
8DH
89H
85H
81H
GAIN [dB]
VOL7-0 bits
+34.5 ≤ Gain ≤ +35.625
7DH
+33.0 ≤ Gain < +34.5
79H
+31.5 ≤ Gain < +33.0
75H
+30.0 ≤ Gain < +31.5
71H
+28.5 ≤ Gain < +30.0
6DH
+27.0 ≤ Gain < +28.5
69H
+25.5 ≤ Gain < +27.0
65H
+24.0 ≤ Gain < +25.5
61H
+22.5 ≤ Gain < +24.0
5DH
+21.0 ≤ Gain < +22.5
59H
+19.5 ≤ Gain < +21.0
55H
+18 ≤ Gain < +19.5
51H
+16.5 ≤ Gain < +18
4DH
+15.0 ≤ Gain < +16.5
49H
+13.5 ≤ Gain < +15.0
45H
+12.0 ≤ Gain < +13.5
41H
+10.5 ≤ Gain < +12.0
3DH
+9.0 ≤ Gain < +10.5
39H
+7.5 ≤ Gain < +9.0
35H
+6.0 ≤ Gain < +7.5
31H
+4.5 ≤ Gain < +6.0
2DH
+3.0 ≤ Gain < +4.5
29H
+1.5 ≤ Gain < +3.0
25H
0 ≤ Gain < +1.5
21H
–1.5 ≤ Gain < 0
19H
–3.0 ≤ Gain < –1.5
11H
–4.5 ≤ Gain < –3.0
01H
–6.0 ≤ Gain < –4.5
0H
Table 34. Value of VOL7-0 bits
GAIN [dB]
–7.5 ≤ Gain < –6.0
–9.0 ≤ Gain < –7.5
–10.5 ≤ Gain < –9.0
–12.0 ≤ Gain < –10.5
–13.5 ≤ Gain < –12.0
–15.0 ≤ Gain < –13.5
–16.5 ≤ Gain < –15.0
–18.0 ≤ Gain < –16.5
–19.5 ≤ Gain < –18.0
–21.0 ≤ Gain < –19.5
–22.5 ≤ Gain < –21.0
–24.0 ≤ Gain < –22.5
–25.5 ≤ Gain < –24.0
–27.0 ≤ Gain < –25.5
–28.5 ≤ Gain < –27.0
–30.0 ≤ Gain < –28.5
–31.5 ≤ Gain < –30.0
–33.0 ≤ Gain < –31.5
–34.5 ≤ Gain < –33.0
–36.0 ≤ Gain < –34.5
–37.5 ≤ Gain < –36.0
–39.0 ≤ Gain < –37.5
–40.5 ≤ Gain < –39.0
–42.0 ≤ Gain < –40.5
–45.0 ≤ Gain < –42.0
–48.0 ≤ Gain < –45.0
–54.0 ≤ Gain < –48.0
MUTE
MS1320-E-00
- 51 -
2011/10