Digital Audio Interface And Digital Microphone Interface - Analog Devices UG-284 User Manual

Evaluation Board User Guide

DIGITAL AUDIO INTERFACE AND DIGITAL MICROPHONE INTERFACE

DIGITAL MIC
INTERFACE 1
DIGITAL MIC
INTERFACE 2
The evaluation board provides three digital audio interfaces
(J28 to J30) and two digital microphone interfaces (J44/J45
and J46/J47).
The pin definitions for J28, J29, and J30 are shown in Figure 5,
Figure 6, and Figure 7, respectively.
1
GND 1
GND 3
GND 5
GND 7
GND 9
GND 11
Figure 5. Pin Definitions for J28
1
GND 1
GND 3
GND 5
GND 7
GND 9
GND 11
Figure 6. Pin Definitions for J29
Figure 4. Digital Audio Interface and Digital Microphone Interface
2
2 MCLK1
4 GPIO1
6 A_BCLK
8 A_LRC
10 A_DACDAT
12 A_ADCDAT
2
2 MCLK2
4 GPIO2
6 B_BCLK
8 B_LRC
10 B_DACDAT
12 B_ADCDAT
The pin definitions for J44 are listed in Table 11.
Table 11. J44
Pin No.
1
2
3
4
5
6
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DIGITAL AUDIO
INTERFACE A
DIGITAL AUDIO
INTERFACE B
DIGITAL AUDIO
INTERFACE C
1 2
GND 1 2 NC
GND 3 4 GPIO3
GND 5 6 C_BCLK
GND 7 8 C_LRC
GND 9 10 C_DACDAT
GND 11 12 C_ADCDAT
NC = NO CONNECT. DO NOT
CONNECT TO THIS PIN.
Figure 7. Pin Definitions for J30
Signal
IOVDD4
DMIC_DATA1
LR_SEL (high)
NC
DMIC_CLK
GND
UG-284