92HD81 Datasheet, PDF (26/279 Pages) Integrated Device Technology – SINGLE CHIP PC AUDIO SYSTEM

92HD81
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
Figure 5. 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, in this case the
external multiplexer isn’t required.
IDT CONFIDENTIAL
26
©2009 INTEGRATED DEVICE TECHNOLOGY, INC.
V 0.995 01/11
92HD81