wm9081 Wolfson Microelectronics plc, wm9081 Datasheet - Page 91

• 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 16h Audio Interface 1
Register 17h Audio Interface 2
w
REGISTER
REGISTER
ADDRESS
ADDRESS
Interface 2
R23 (17h)
Audio
BIT
BIT
3:2
1:0
1
0
9
8
7
6
5
4
AIF_BCLK_INV
DAC_DAT_INV
AIF_LRCLK_IN
DAC_COMPM
AIF_FMT[1:0]
DAC_COMP
AIF_WL[1:0]
LRCLK_DIR
BCLK_DIR
AIF_TRIS
LABEL
LABEL
ODE
V
DEFAULT
DEFAULT
00
10
0
0
0
0
0
0
0
0
11 = 4 stereo slots
DAC Companding Enable
0 = Disabled
1 = Enabled
DAC Companding Type
0 = μ-law
1 = A-law
Audio Interface Tristate
0 = Audio interface pins operate normally
1 = Tristate all audio interface pins
DACDAT Invert
0 = DACDAT not inverted
1 = DACDAT inverted
BCLK Invert
0 = BCLK not inverted
1 = BCLK inverted
BCLK Direction
(Forces BCLK clock to be output in slave mode)
0 = BCLK normal operation
1 = BCLK clock output enabled
LRCLK Direction
(Forces LRCLK clock to be output in slave mode)
0 = LRCLK normal operation
1 = LRCLK clock output enabled
Right, left and I
0 = normal LRCLK polarity
1 = invert LRCLK polarity
DSP Mode – mode A/B select :
0 = MSB is available on 2nd BCLK rising edge after
LRC rising edge (mode A)
1 = MSB is available on 1st BCLK rising edge after
LRC rising edge (mode B)
Digital Audio Interface Word Length
00 = 16 bits
01 = 20 bits
10 = 24 bits
11 = 32 bits
Note - see “Companding” for the selection of 8-bit
mode.
Digital Audio Interface Format
00 = Right justified
01 = Left justified
10 = I
11 = DSP Mode
2
S Format
2
S modes – LRCLK polarity:
DESCRIPTION
DESCRIPTION
PP, Rev 3.0, April 2009
Digital audio
interface
control
Digital audio
interface
control
Digital audio
interface
control
Digital audio
interface
control
Digital audio
interface
control
Digital audio
interface
control
Digital audio
interface
control
Digital audio
interface
control
Digital audio
interface
control
Digital audio
interface
control
REFER TO
REFER TO
WM9081
91