Datasheet

ADAU1772 Data Sheet
Rev. B | Page 27 of 116
SYSTEM BLOCK DIAGRAMS
Figure 67. ADAU1772 System Block Diagram with Analog Microphones, Self-Boot Mode
EEPROM
CONTROL INTERFACE:
SWITCHES AND
POTENTIOMETERS
DC VOLTAGE SOURCE:
1.8 V TO 3.3 V
LEFT
MICROPHONE
RIGHT
MICROPHONE
LEFT HEADPHONE
RIGHT HEADPHONE
1
SDA/MISO
2
SCL/SCLK
3
ADDR1/MOSI
4
ADDR0/SS
5
SELFBOOT
6
MICBIAS0
7
MICBIAS1
8
AIN0REF
9
AIN0
10
AVDD
11
13
AIN1REF
14
AIN1
15
AIN2REF
16
AIN2
12
CM
17
AIN3REF
18
AIN3
19
AVDD
20 23
AGND AGND AGND
DGND
24
AVDD
21
HPOUTLN/LOUTLN
22
HPOUTLP/LOUTLP
25
HPOUTRN/LOUTRN
26
HPOUTRP/LOUTRP
27
PD
40
IOVDD
28
REG_OUT
30
31
LRCLK/MP3
32
BCLK/MP2
33
DAC_SDATA/MP0
34
ADC_SDATA0/PDMOUT/MP1
38
XTALO
39
XTALI/MCLKIN
35
ADC_SDATA1/CLKOUT/MP6
36
DMIC2_3/MP5
37
DMIC0_1/MP4
29
DVDD
41
EP
ADAU1772
10µF
10µF
+
10µF
0.10µF
100Ω
22pF
22pF
+
10µF
0.10µF
+
10µF
0.10µF
0.10µF
0.10µF
0.10µF
47µF
47µF
2kΩ 2kΩ
1.0µF
LEFT_AUDIO
RIGHT_AUDIO
10804-060