wm8918 Wolfson Microelectronics plc, wm8918 Datasheet - Page 137

• Manufacturer Part Number: wm8918
• Description: Ultra Low Power Dac For Portable Audio Applications
• Manufacturer: Wolfson Microelectronics plc

Production Data
Register 19h Audio Interface 1
w
REGISTER
ADDRESS
Interface 1
R25 (19h)
Audio
BIT
3:2
1:0
13
12
11
10
8
7
6
4
AIF_BCLK_INV
AIFRX_TDM_C
AIF_LRCLK_IN
AIFTX_TDM_C
AIF_FMT[1:0]
AIFRX_TDM
AIF_WL[1:0]
AIFTX_TDM
BCLK_DIR
AIF_TRIS
LABEL
HAN
HAN
V
DEFAULT
10
10
0
0
0
0
0
0
0
0
AIFRX TDM Enable
0 = Normal AIFRXDAT operation
1 = TDM enabled on AIFRXDAT
AIFRX TDM Channel Select
0 = AIFRXDAT data input on slot 0
1 = AIFRXDAT data input on slot 1
AIFTX TDM Enable
0 = Normal AIFTXDAT operation
1 = TDM enabled on AIFTXDAT
AIFTX TDM Channel Select
0 = AIFTXDAT outputs data on slot 0
1 = AIFTXDAT output data on slot 1
Audio Interface Tristate
0 = Audio interface pins operate normally
1 = Tristate all audio interface pins
BCLK Invert
0 = BCLK not inverted
1 = BCLK inverted
Audio Interface BCLK Direction
0 = BCLK is input
1 = BCLK is output
LRC Polarity / DSP Mode A-B select.
Right, left and I2S modes – LRC polarity
0 = Not Inverted
1 = Inverted
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
Digital Audio Interface Format
00 = Right Justified
01 = Left Justified
10 = I2S
11 = DSP
DESCRIPTION
PD, Rev 4.0, September 2010
REFER TO
WM8918
137