WM8903LGEFK/RV Wolfson Microelectronics, WM8903LGEFK/RV Datasheet - Page 54

• Manufacturer Part Number: WM8903LGEFK/RV
• Description: Audio CODECs ULTRA LOW PWR HI FI CODEC
• Manufacturer: Wolfson Microelectronics

Specifications of WM8903LGEFK/RV

• Audio Codec Type: Stereo Codec
• No. Of Adcs: 2
• No. Of Dacs: 2
• No. Of Input Channels: 6
• No. Of Output Channels: 8
• Adc / Dac Resolution: 24bit
• Sampling Rate: 96kHz
• Operating Temperature Range: -40°C To +85°C
• Rohs Compliant: Yes
• Adcs / Dacs Signal To Noise Ratio: 96dB
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

WM8903
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The polarity of each ADC output signal can be changed under software control using the
ADCL_DATINV and ADCR_DATINV register bits. The AIFADCL_SRC and AIFADCR_SRC register
bits may be used to select which ADC is used for the left and right digital audio interface data. These
register bits are described in Table 24.
Table 24 ADC Routing and Control
The input data source for each DAC can be changed under software control using register bits
DACL_SRC and DACR_SRC. The polarity of each DAC input may also be modified using register
bits DACL_DATINV and DACR_DATINV. These register bits are described in Table 25.
Table 25 DAC Routing and Control
DAC INTERFACE VOLUME BOOST
A digital gain function is available at the audio interface to boost the DAC volume when a small
signal is received on DACDAT. This is controlled using register bits DAC_BOOST [1:0]. To prevent
clipping at the DAC input, this function should not be used when the boosted DAC data is expected
to be greater than 0dBFS.
The digital interface volume is controlled as shown in Table 26.
R24 (18h)
Audio
Interface 0
R38 (26h)
ADC Digital 0
R24 (18h)
Audio
Interface 0
REGISTER
REGISTER
ADDRESS
ADDRESS
BIT
BIT
12
11
7
6
1
0
5
4
AIFADCL_SRC
AIFADCR_SRC
ADCL_DATINV
ADCR_DATINV
DACL_DATINV
DACR_DATINV
AIFDACL_SRC
AIFDACR_SRC
LABEL
LABEL
DEFAULT
DEFAULT
0
1
0
0
0
0
0
1
Left Digital Audio channel source
0 = Left ADC data is output on left
channel
1 = Right ADC data is output on left
channel
Right Digital Audio channel source
0 = Left ADC data is output on right
channel
1 = Right ADC data is output on
right channel
Left ADC Invert
0 = Left ADC output not inverted
1 = Left ADC output inverted
Right ADC Invert
0 = Right ADC output not inverted
1 = Right ADC output inverted
Left DAC Invert
0 = Left DAC output not inverted
1 = Left DAC output inverted
Right DAC Invert
0 = Right DAC output not inverted
1 = Right DAC output inverted
Left DAC Data Source Select
0 = Left DAC outputs left channel
data
1 = Left DAC outputs right channel
data
Right DAC Data Source Select
0 = Right DAC outputs left channel
data
1 = Right DAC outputs right channel
data
PD, Rev 4.0, September 2010
DESCRIPTION
DESCRIPTION
Production Data
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