wm9081 Wolfson Microelectronics plc, wm9081 Datasheet - Page 94

• Manufacturer Part Number: wm9081
• Description: Mono Dac With 2.6w Class Ab/d Speaker Driver, Dynamic Range Controller And Retune Mobile Parametric Equalizer
• Manufacturer: Wolfson Microelectronics plc

WM9081
Register 1Fh DAC Digital 2
w
REGISTER
REGISTER
ADDRESS
ADDRESS
R32 (20h)
DRC 1
10:6
BIT
BIT
2:1
15
3
5
2
DRC_STARTU
DRC_FF_DLY
DEEMPH[1:0]
P_GAIN[4:0]
DAC_MUTE
DRC_ENA
DRC_QR
LABEL
LABEL
DEFAULT
DEFAULT
0_0110
00
1
0
1
1
DAC volume to change immediately to the DAC_VOL
setting.
1 = Disabling soft-mute (DAC_MUTE=0) will cause the
DAC volume to ramp up gradually to the DAC_VOL
setting.
DAC Soft Mute Control
0 = DAC Un-mute
1 = DAC Mute
DAC De-Emphasis Control
00 = No de-emphasis
01 = 32kHz sample rate
10 = 44.1kHz sample rate
11 = 48kHz sample rate
DRC enable
0 = Disabled
1 = Enabled
Initial gain at DRC startup
00000 = -3dB
00001 = -2.5dB
00010 = -2dB
00011 = -1.5dB
00100 = -1dB
00101 = -0.5dB
00110 = 0dB (default)
00111 = 0.5dB
01000 = 1dB
01001 = 1.5dB
01010 = 2dB
01011 = 2.5dB
01100 = 3dB
01101 = 3.5dB
01110 = 4dB
01111 = 4.5dB
10000 = 5dB
10001 = 5.5dB
10010 = 6dB
10011 to 11111 = Reserved
Feed-forward delay for anti-clip feature
0 = 5 samples
1 = 9 samples
Time delay can be calculated as 5/f
the sample rate.
Quick release enable
0 = Disabled
DESCRIPTION
DESCRIPTION
s
or 9/ f
s
, where f
s
PP, Rev 3.0, April 2009
is
Converter
(DAC)
Digital to
Analogue
Converter
(DAC)
Digital to
Analogue
Converter
(DAC)
Dynamic
Range
Controller
(DRC)
Power
Managemen
t
Dynamic
Range
Controller
(DRC)
Dynamic
Range
Controller
(DRC)
Dynamic
Range
REFER TO
REFER TO
Pre-Production
94