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Switches
3.5mm
Stereo
Line In
ADC/DAC
ADAU1761
3.5mm
Stereo
Line Out
TOSLINK
Optical
Input
Digital Audio
Processor
ADAU1452
TOSLINK
Optical
Output
PDM Mics
Figure 3-1: Block Diagram
Switches
This section describes operation of the switches. The switch locations are shown in the Switch Locations figure.
3–2
(3)
PWR IN
I2C
AD2428
I2S/TDM
PDM
5V
12V
Regulator
LT8609S
EVAL-AD2428WD1BZ A
Battery
Backup
3.3V
Power
Regulator
Manager
LTC3621
LTC4040
7V/8V
Li-Ion
Regulator
Battery
LTC3121
2
B Evaluation Board Manual
LED
(2) 2 pin
DuraClik
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