Production Data
WM9090
w
PD, November 2010, Rev 4.1
25
REGISTER
ADDRESS
BIT LABEL
DEFAULT
DESCRIPTION
R28 (1Ch)
Left Output
Volume
8
HPOUT1_VU
N/A
Headphone Output PGA Volume
Update
Writing a 1 to this bit will update
HPOUT1LVOL and HPOUT1RVOL
volumes simultaneously.
7
HPOUT1L_ZC
0
Left Headphone Output PGA Zero
Cross Control
0 = Change gain immediately
1 = Change gain on zero cross only
6
HPOUT1L_MUTE
0
Left Headphone Output PGA Mute
0 = Un-mute
1 = Mute
5:0
HPOUT1L_VOL [5:0]
2Dh
(-12dB)
Left Headphone Output PGA
Volume
-57dB to +6dB in 1dB steps
(See Table 11 for output PGA
volume control range)
R29 (1Dh)
Right Output
Volume
8
HPOUT1_VU
N/A
Headphone Output PGA Volume
Update
Writing a 1 to this bit will update
HPOUT1LVOL and HPOUT1RVOL
volumes simultaneously.
7
HPOUT1R_ZC
0
Right Headphone Output PGA Zero
Cross Control
0 = Change gain immediately
1 = Change gain on zero cross only
6
HPOUT1R_MUTE
0
Right Headphone Output PGA Mute
0 = Un-mute
1 = Mute
5:0
HPOUT1R_VOL [5:0]
2Dh
(-12dB)
Right Headphone Output PGA
Volume
-57dB to +6dB in 1dB steps
(See Table 11 for output PGA
volume control range)
Table 10 Headphone Output PGA Control
