WM8990ECS/RV Wolfson Microelectronics, WM8990ECS/RV Datasheet - Page 58

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WM8990ECS/RV

Manufacturer Part Number
WM8990ECS/RV
Description
Audio CODECs Stereo CODEC w.Class AB/D speaker driver
Manufacturer
Wolfson Microelectronics
Datasheet

Specifications of WM8990ECS/RV

Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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WM8990
w
DIGITAL MIXING
The ADC and DAC data can be combined in various ways to support a range of different usage
modes.
Data from either of the two ADCs can be routed to either the left or the right channel of the digital
audio interface. In addition, data from either of the digital audio interface channels can be routed to
either the left or the right DAC. See "Digital Audio Interface" for more information on the audio
interface.
DIGITAL MIXING PATHS
Figure 28 shows the digital mixing paths available in the WM8990 digital core.
Figure 28 Digital Mixing Paths
ADCR_ENA
ADCL_ENA
ADC
ADC
en
en
ADC_HPF_CUT
MAIN REGISTER BIT REFERENCE
READBACK AVAILABLE
REGISTER BIT ALSO REFERENCED
ELSEWHERE IN DIAGRAM
OR HI-FI)
OR HI-FI)
FILTER
(VOICE
FILTER
(VOICE
PASS
PASS
HIGH
HIGH
[1:0]
ADCR_DATINV
ADCL_DATINV
AIFADCR_SRC
AIFADCL_SRC
en
en
ADC_HPF_ENA
ADCL_VOL
[7:0]
ADCR_VOL
[7:0]
R
ADCR_DAC_SVOL
[7:0]
ADCL_DAC_SVOL
[7:0]
DIGITAL AUDIO
L
A-law and u-law support
INTERFACE
ADC_TO_DACR
TDM Support
ADC_TO_DACL
00=0
01=ADCL
10=ADCR
11=Reserved
0
0
R
[1:0]
[1:0]
+
+
DIGITAL CORE
DACR_VOL
DACL_VOL
L
DAC_BOOST
[1:0]
DACR_DATINV
DACL_DATINV
[7:0]
[7:0]
MONO
DACL_SRC
DACR_SRC
DAC_MUTEMODE,
DAC_MUTERATE,
Alternative DAC Interface
Button Control / Accessory Detect
Clock Output
+
DAC_SB_FILT,
DAC_MUTE,
DEEMP[1:0]
DAC_BOOST
00 = 0dB
01 = +6dB
10 = +12dB
11 = +18dB
DAC_MONO
GPIO
DAC
DAC
PD, March 2009, Rev 4.0
DACR
DACL
en
en
Production Data
58

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