WM8900LGEFK/RV Wolfson Microelectronics, WM8900LGEFK/RV Datasheet - Page 42

• Manufacturer Part Number: WM8900LGEFK/RV
• Description: Audio CODECs Ultra Low Power Hi-Fi CODEC
• Manufacturer: Wolfson Microelectronics

Specifications of WM8900LGEFK/RV

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

WM8900
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Table 22 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 DAVR_DATINV. These register bits are described in Table 23.
Table 23 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.
Table 24 DAC Interface Volume Boost
R4 (04h)
Audio
Interface 1
R14 (0Eh)
ADC
Control
R5 (05h)
Audio
Interface 2
R10 (0Ah)
DAC
Control
R5 (05h)
Audio
Interface 2
REGISTER
ADDRESS
REGISTER
REGISTER
ADDRESS
ADDRESS
15
14
1
0
15
14
1
0
11:10
BIT
BIT
BIT
AIFADCL_SRC
AIFADCR_SRC
ADCL_DATINV
ADCR_DATINV
DACL_SRC
DACR_SRC
DACL_DATINV
DACR_DATINV
DAC_BOOST
[1:0]
LABEL
LABEL
LABEL
0
1
0
0
0
1
0
0
00
DEFAULT
DEFAULT
DEFAULT
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 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
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
DAC Input Volume Boost
00 = 0dB
01 = +6dB
(Input data must not exceed -6dBFS)
10 = +12dB
(Input data must not exceed -12dBFS)
11 = +18dB
(Input data must not exceed -18dBFS)
PD, August 2008, Rev 4.0
DESCRIPTION
DESCRIPTION
DESCRIPTION
Production Data
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