wm9090 Wolfson Microelectronics plc, wm9090 Datasheet - Page 24

• Manufacturer Part Number: wm9090
• Description: Ultra Low Power Audio Subsystem
• Manufacturer: Wolfson Microelectronics plc

WM9090
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Table 10 Headphone Output PGA Control
Table 11 Output PGA Volume Range
R29 (1Dh)
Right Output
Volume
PGA GAIN SETTING
REGISTER
ADDRESS
1Ah
1Bh
1Ch
1Dh
1Eh
1Fh
10h
11h
12h
13h
14h
15h
16h
17h
18h
19h
Ah
Bh
Ch
Dh
Eh
0h
1h
2h
3h
4h
5h
6h
7h
8h
9h
Fh
BIT
5:0
8
7
6
HPOUT1_VU
HPOUT1R_ZC
HPOUT1R_MUTE
HPOUT1R_VOL [5:0]
VOLUME (dB)
-57
-56
-55
-54
-53
-52
-51
-50
-49
-48
-47
-46
-45
-44
-43
-42
-41
-40
-39
-38
-37
-36
-35
-34
-33
-32
-31
-30
-29
-28
-27
-26
LABEL
PGA GAIN SETTING
DEFAULT
(-12dB)
2Dh
N/A
2Ah
2Bh
2Ch
2Dh
2Eh
3Ah
3Bh
3Ch
3Dh
3Eh
20h
21h
22h
23h
24h
25h
26h
27h
28h
29h
2Fh
30h
31h
32h
33h
34h
35h
36h
37h
38h
39h
3Fh
0
0
Headphone Output PGA Volume
Update
Writing a 1 to this bit will update
HPOUT1LVOL and HPOUT1RVOL
volumes simultaneously.
Right Headphone Output PGA Zero
Cross Control
0 = Change gain immediately
1 = Change gain on zero cross only
Right Headphone Output PGA Mute
0 = Un-mute
1 = Mute
Right Headphone Output PGA
Volume
-57dB to +6dB in 1dB steps
(See Table 11 for output PGA
volume control range)
VOLUME (dB)
PP, January 2010, Rev 3.0
DESCRIPTION
-25
-24
-23
-22
-21
-20
-19
-18
-17
-16
-15
-14
-13
-12
-11
-10
+1
+2
+3
+4
+5
+6
-9
-8
-7
-6
-5
-4
-3
-2
-1
0
Pre-Production
24