wm8941 Wolfson Microelectronics plc, wm8941 Datasheet - Page 60

• Manufacturer Part Number: wm8941
• Description: Mono Codec With Speaker Driver And Video Buffer
• Manufacturer: Wolfson Microelectronics plc

WM8941
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Table 44 Audio Interface Control
Note: Right Justified Mode will only operate with a maximum of 24 bits. If 32-bit mode is selected the
device will operate in 24-bit mode.
R4
Audio interface
control
R5
Companding
Control
REGISTER
ADDRESS
9
8
7
6:5
4:3
2
1
5
BIT
LOUTR
BCP
FRAMEP
WL
FMT
DLRSWAP
ALRSWAP
WL8
LABEL
0
0
0
10
10
0
0
0
DEFAULT
LOUTR control
0=normal
1=Input mono channel data output on both
left and right channels
BCLK polarity
0=normal
1=inverted
Frame clock polarity (for RJ, LJ and I
formats)
0=normal
1=inverted
DSP Mode control
1 = Configures interface so that MSB is
available on 1st BCLK rising edge after
FRAME rising edge
0 = Configures interface so that MSB is
available on 2nd BCLK rising edge after
FRAME rising edge
Word length
00 = 16 bits
01 = 20 bits
10 = 24 bits
11 = 32 bits (see note)
Audio interface Data Format Select:
00=Right Justified
01=Left Justified
10=I
11= DSP/PCM mode
Controls whether DAC data appears in
‘right’ or ‘left’ phases of FRAME clock:
0=DAC data appear in ‘left’ phase of
FRAME
1=DAC data appears in ‘right’ phase of
FRAME
Controls whether ADC data appears in
‘right’ or ‘left’ phases of FRAME clock:
0=ADC data appear in ‘left’ phase of
FRAME
1=ADC data appears in ‘right’ phase of
FRAME
8 Bit Word Length Enable
Only recommended for use with
companding
0=Word Length controlled by WL
1=8 bits
2
S format
DESCRIPTION
PD, Rev 4.0, August 2008
Production Data
2
S
60