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92HD005

4-CHANNEL HD AUDIO CODEC WITH QUAD DIGITAL MICROPHONE INTERFACE

Integrated Device Technology 

92HD005/92HD005D

4-CHANNEL HD AUDIO CODEC WITH QUAD DIGITAL MICROPHONE INTERFACE

PC AUDIO

Digital

Microphones

Figure 5. Quad Digital Microphone Configuration

Off-Chip On-Chip

External

Multiplexer

DMIC_0

On-Chip

Multiplexer

Pin

STEREO

ADC0

PCM

Stereo Channels

Output For

DMIC_0 L & R

DMIC_CLK

Pin

DMIC_1

Pin

External

Multiplexer

On-Chip

Multiplexer

Note: Valid ADC

Pairs include:

ADC0/ADC1,

STEREO

ADC1

PCM

Stereo Channels

Output For

DMIC_1 L & R

DMIC_0

Valid

Data R0

Valid

Data L0

Valid

Data R0

Valid

Data L0

DMIC_1

Valid

Data R1

Valid

Data L1

Valid

Data R1

Right

Left Right

Channel Channel Channel

Valid

Data L1

Left

Channel

DMIC_CLK

Note: Some Digital Microphone Implementations support data on either edge, therefore the

external mux may not be required

IDT™

18

4-CHANNEL HD AUDIO CODEC WITH QUAD DIGITAL MICROPHONE INTERFACE

92HD005/92HD005D

V 1.0 12/06

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