STAC9227/9228/9229/9230
8-CHANNEL HIGH DEFINITION AUDIO CODEC
PC AUDIO
IDT
8-CHANNEL HIGH DEFINITION AUDIO CODEC
27
STAC9227/9228/9229/9230V 1.0 MARCH 2007
IDT CONFIDENTIAL
Figure 3. Quad Digital Microphone Configuration
Note: Some Digital Microphone Implementations support data on either edge, therefore, the
external mux may not be required.
3.7.
Analog PC-Beep
PC-Beep is NOT supported during Link Reset.
Digital
Microphones
DMIC_0
DMIC_CLK
STEREO
ADC0
PCM
M
Stereo Channels
Output For
DMIC_0 L & R
Pin
DMIC_1
DMIC_CLK
Valid
Data R1
M
Pin
Valid
Data L1
DMIC_1
STEREO
ADC1
PCM
M
Stereo Channels
Output For
DMIC_1 L & R
Pin
M
Valid
Data R0
Valid
Data L0
DMIC_0
External
Multiplexer
External
Multiplexer
On-Chip
Multiplexer
On-Chip
Multiplexer
On-Chip
Off-Chip
Note: Valid ADC
Pairs include:
ADC0/ADC1,
ADC0/ADC2,
ADC1/ADC2
Valid
Data R1
Valid
Data L1
Valid
Data R0
Valid
Data L0
Right
Channel
Left
Channel
Right
Channel
Left
Channel