WM8980_07 Datasheet, PDF (53/112 Pages) Wolfson Microelectronics plc – Stereo CODEC With Speaker Driver and Video Buffer

Pre-Production
WM8980
Figure 24 Headphone Outputs LOUT1 and ROUT1
REGISTER
ADDRESS
R52
LOUT1
Volume
control
BIT
LABEL
7
LOUT1ZC
6
LOUT1MUTE
5:0 LOUT1VOL
R53
ROUT1
Volume
control
8
HPVU
7
ROUT1ZC
6
ROUT1MUTE
5:0 ROUT1VOL
8
HPVU
Table 35 OUT1 Volume Control
DEFAULT
DESCRIPTION
0
0
111001
Not latched
0
0
111001
Not latched
Headphone volume zero cross
enable:
1 = Change gain on zero cross only
0 = Change gain immediately
Left headphone output mute:
0 = Normal operation
1 = Mute
Left headphone output volume:
000000 = -57dB
...
111001 = 0dB
...
111111 = +6dB
LOUT1 and ROUT1 volumes do not
update until a 1 is written to HPVU
(in reg 52 or 53)
Headphone volume zero cross
enable:
1 = Change gain on zero cross only
0 = Change gain immediately
Right headphone output mute:
0 = Normal operation
1 = Mute
Right headphone output volume:
000000 = -57dB
...
111001 = 0dB
...
111111 = +6dB
LOUT1 and ROUT1 volumes do not
update until a 1 is written to HPVU
(in reg 52 or 53)
w
PP Rev 3.1 March 2007
53