wm9081 Wolfson Microelectronics plc, wm9081 Datasheet - Page 93

• 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

Pre-Production
Register 1Bh Interrupt Status Mask
Register 1Ch Interrupt Polarity
Register 1Dh Interrupt Control
Register 1Eh DAC Digital 1
w
Status Mask
DAC Digital
DAC Digital
REGISTER
REGISTER
REGISTER
REGISTER
REGISTER
ADDRESS
ADDRESS
ADDRESS
ADDRESS
ADDRESS
R27 (1Bh)
R28 (1Ch)
R29 (1Dh)
R30 (1Eh)
R31 (1Fh)
Interrupt
Interrupt
Interrupt
Polarity
Control
1
2
BIT
BIT
BIT
BIT
BIT
7:0
15
10
2
0
0
0
9
IRQ_OP_CTRL
DAC_MUTERA
IM_WSEQ_BU
DAC_VOL[7:0] 1100_0000 DAC Volume and MUTE
IM_TSHUT_EI
DAC_MUTEM
TSHUT_INV
IRQ_POL
SY_EINT
LABEL
LABEL
LABEL
LABEL
LABEL
ODE
NT
TE
DEFAULT
DEFAULT
DEFAULT
DEFAULT
DEFAULT
1
0
0
0
0
0
0
Write Sequencer interrupt mask
0 = do not mask interrupt
1 = mask interrupt
Thermal Shutdown interrupt mask
0 = do not mask interrupt
1 = mask interrupt
Thermal Shutdown interrupt polarity
0 = active low (interrupt is triggered when temperature
threshold is exceeded)
1 = active high (interrupt is triggered when temperature
is normal)
Interrupt output polarity
0 = Active low
1 = Active high
IRQ Output pin configuration
0 = CMOS
1 = Open Drain
0000 0000 = MUTE
0000 0001 = -71.625dB
… in steps of 0.375dB to
1100 0000 = 0dB
1100 0001 to 1111 1111 = reserved
DAC Soft Mute Ramp Rate
0 = Fast ramp (fs/2, maximum ramp time is 10.7ms at
fs=48k)
1 = Slow ramp (fs/32, maximum ramp time is 171ms at
fs=48k)
(Note: ramp rate scales with sample rate.)
DAC Unmute Ramp select
0 = Disabling soft-mute (DAC_MUTE=0) will cause the
DESCRIPTION
DESCRIPTION
DESCRIPTION
DESCRIPTION
DESCRIPTION
PP, Rev 3.0, April 2009
Interrupts
Interrupts
Interrupts
Interrupts
Interrupts
Digital to
Analogue
Converter
(DAC)
Digital to
Analogue
Converter
(DAC)
Digital to
Analogue
REFER TO
REFER TO
REFER TO
REFER TO
REFER TO
WM9081
93