wm8903 Wolfson Microelectronics plc, wm8903 Datasheet - Page 36

• Manufacturer Part Number: wm8903
• Description: Ultra Low Power Codec For Portable Audio Applications
• Manufacturer: Wolfson Microelectronics plc

WM8903
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Figure 29 Digital Microphone Interface Timing
The digital microphone interface control fields are described in Table 7.
Table 7 Digital Microphone Interface Control
In addition to setting the ADC_DIG_MIC bit as described in Table 7, the pins GPIO1/DMIC_LR and
GPIO2/DMIC_DAT must also be configured to provide the digital microphone interface function. See
“General Purpose Input/Output (GPIO)” for details.
R164 (A4h)
Clock Rate
Test 4
REGISTER
ADDRESS
BIT
9
ADC_DIG_MIC
LABEL
DEFAULT
0
Enables Digital Microphone mode.
0 = Audio DSP input is from ADC
1 = Audio DSP input is from digital
microphone interface
PP, Rev 3.1, August 2009
DESCRIPTION
Pre-Production
36