WM8962B Datasheet, PDF (110/295 Pages) Wolfson Microelectronics plc – Ultra-Low Power Stereo CODEC with Audio Enhancement DSP, 1W Stereo Class D Speaker Drivers and Ground Referenced Headphone Drivers

WM8962
The volume ramp rate during soft mute and un-mute is controlled by the DAC_MUTERATE bit as
shown in Table 63.
REGISTER
ADDRESS
R5 (05h)
ADC & DAC
Control 1
BIT
LABEL
4 DAC_MUTE_RAMP
DEFAULT
1
3 DAC_MUTE
1
R49 (31h)
4 DAC_MUTE
1
R6 (06h)
3 DAC_UNMUTE_RAMP 1
ADC & DAC
Control 2
2 DAC_MUTERATE
0
Table 63 DAC Soft-Mute Control
DESCRIPTION
DAC Soft Mute Control
0 = Muting the DAC
(DAC_MUTE = 1) will cause the
volume to change immediately to
mute.
1 = Muting the DAC
(DAC_MUTE = 1) will cause the
volume to ramp down gradually
to mute.
Digital DAC Mute
0 = Un-mute
1 = Mute
Note that this bit also exists in
R49. Reading or writing to either
location has the same effect.
Digital DAC Mute
0 = Un-mute
1 = Mute
Note that this bit also exists in
R5. Reading or writing to either
location has the same effect.
DAC Soft Unmute Control
0 = Unmuting the DAC
(DAC_MUTE = 0) will cause the
volume to change immediately to
the DACL_VOL/DACR_VOL
settings.
1 = Unmuting the DAC
(DAC_MUTE = 0) will cause the
volume to ramp up gradually to
the DACL_VOL/DACR_VOL
settings.
DAC Soft Mute Ramp Rate
0 = Fast ramp (maximum ramp
time 10.7ms)
1 = Slow ramp (maximum ramp
time 171ms).
Note that the ramp rate scales
with sample rate (fs). Quoted
values are correct for fs =
48kHz.
110
Rev 4.3