Datasheet

LM49450
SNAS440D –FEBRUARY 2008–REVISED MAY 2013 www.ti.com
HEADPHONE VOLUME CONTROL REGISTER (0x07h)
Default value is 0x00h.
Table 16. Headphone Volume Control Register
Bit Name Value Description
B7:B5 RESERVED X UNUSED
HP4 (B4)
HP3 (B3)
See Headphone Volume Control Controls gain/attenuation of the audio signal in the
B4:B0 HP2 (B2)
Table headphone path.
HP1 (B1)
HP0 (B0)
VOLUME
HP4 HP3 HP2 HP1 HP0 HP GAIN (dB)
STEP
1 0 0 0 0 0 –59
2 0 0 0 0 1 –48
3 0 0 0 1 0 –40.5
4 0 0 0 1 1 –34.5
5 0 0 1 0 0 –30
6 0 0 1 0 1 –27
7 0 0 1 1 0 –24
8 0 0 1 1 1 –21
9 0 1 0 0 0 –18
10 0 1 0 0 1 –15
11 0 1 0 1 0 –13.5
12 0 1 0 1 1 –12
13 0 1 1 0 0 –10.5
14 0 1 1 0 1 –9
15 0 1 1 1 0 –7.5
16 0 1 1 1 1 –6
17 1 0 0 0 0 –4.5
18 1 0 0 0 1 –3
19 1 0 0 1 0 –1.5
20 1 0 0 1 1 0
21 1 0 1 0 0 1.5
22 1 0 1 0 1 3
23 1 0 1 1 0 4.5
24 1 0 1 1 1 6
25 1 1 0 0 0 7.5
26 1 1 0 0 1 9
27 1 1 0 1 0 10.5
28 1 1 0 1 1 12
29 1 1 1 0 0 13.5
30 1 1 1 0 1 15
31 1 1 1 1 0 16.5
32 1 1 1 1 1 18
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