92HD71B7 Datasheet, PDF (22/216 Pages) Integrated Device Technology – 4-CHANNEL HD AUDIO CODEC OPTIMIZED FOR LOW POWER

92HD71B7
4-CHANNEL HD AUDIO CODEC OPTIMIZED FOR LOW POWER
PC AUDIO
Figure 7. Quad Digital Microphone Configuration
Digital
Microphones
Off-Chip On-Chip
External
Multiplexer
DMIC_0
On-Chip
Multiplexer
Pin
STEREO
ADC0
PCM
Stereo Channels
Output For
DMIC_0 L&R
Digital
Microphones
DMIC_CLK
Pin
DMIC_1
Pin
External
Multiplexer
On-Chip
Multiplexer
STEREO
ADC1
PCM
DMIC_0
Valid
Valid
Valid
Valid
Valid
Data R0 Data L0 Data R0 Data L0 Data R0
DMIC_1
DMIC_CLK
Valid
Valid
Valid
Data R1 Data L1 Data R1
Right
Left Right
Channel Channel Channel
Valid
Valid
Data L1 Data R1
Left
Channel
Stereo Channels
Output For
DMIC_1 L&R
Note: Some Digital Microphone Implementations support data on either edge, therefore, the external
mux may not be required.
IDT™ CONFIDENTIAL AND PROPRIETARY
22
4-CHANNEL HD AUDIO CODEC OPTIMIZED FOR LOW POWER
92HD71B7
V 0.9 07/07