WM8990ECS/RV Wolfson Microelectronics, WM8990ECS/RV Datasheet - Page 104
WM8990ECS/RV
Manufacturer Part Number
WM8990ECS/RV
Description
Audio CODECs Stereo CODEC w.Class AB/D speaker driver
Manufacturer
Wolfson Microelectronics
Datasheet
1.WM8990ECSRV.pdf
(172 pages)
Specifications of WM8990ECS/RV
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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WM8990
w
SYSCLK
ADCLRC Generator
DACLRC Generator
BCLK Generator
Figure 62 Audio Interface Output Control
The Audio Interface output control is illustrated above. The master mode control registers
AIF_MSTR1 and AIF_MSTR2 as well as the left-right clock control registers ADCLRC_DIR and
DACLRC_DIR determine whether the WM8990 generates the according clocks and AIF_SEL and
ALRCGPIO1 control registers define the pins these clocks are provided from.
enable
enable
enable
DACLRC_DIR
ADCLRC_DIR
AIF_SEL
AIF_MSTR1
DACENL+DACENR
DACLRC_DIR
AIF_MSTR1
AIF_MSTR1
AIF_MSTR2
AIF_MSTR2
0
1
&
AIF_SEL & !(ADCENL+ADCENR)
AIF_SEL & !(ALRCGPIO1 & (ADCENL+ADCENR))
>1
0
0
0
0
ALRCGPIO1
AIF_SEL
AIF_SEL
>1
>1
0
1
0
1
0
1
0
1
0
1
PD, March 2009, Rev 4.0
Production Data
BCLK
ADCLRC
ADCDAT
DACLRC
DACDAT
BCLK2
DACLRC2
DACDAT2
104
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