Cirrus-logic CS53L21 User Manual Page 9

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DS700PP1 9
CS53L21
2. TYPICAL CONNECTION DIAGRAMS
Figure 1. Typical Connection Diagram (Software Mode)
1 µF
+1.8 V or +2.5 V
VQ
0.1 µF
1 µF
DGND
VL
0.1 µF
+1.8 V, +2.5 V
or +3.3 V
SCL/CCLK
SDA/CDIN
RESET
2 k
Ω
See Note 1
LRCK
AGND
AD0/CS
MCLK
SCLK
VD
* Capacitors must be C0G or equivalent
150 pF
AFILTA
AFILTB
MICIN1
AIN3A
Microphone Input
150 pF
SDOUT
CS53L21
2 k
Ω
1 µF
BIAS2
AIN3B/MICIN2
**
+1.8 V or +2.5 V
AIN1A
Left Analog Input 1
1800 pF
1800 pF
100 kΩ
100 Ω
AIN1B
Right Analog Input 1
*
*
Note 1:
Resistors are required for I²C
control port operation
R
L
See Note 3
Note 3: The value of R
L
is dictated
by the microphone cartridge.
Digital Audio
Processor
0.1 µF
VA
AIN2A
Left Analog Input 2
1800 pF
1800 pF
AIN2B
BIAS1
Right Analog Input 2
*
*
10 µF
FILT+
Microphone Bias
1 µF
1 µF
1 µF
1 µF
1 µF
0.1 µF
100 kΩ
100 Ω
100 Ω
100 Ω
100 kΩ
100 kΩ
100 kΩ
See Note 4
Note 4:
Series resistance in the path of the power supplies must
be avoided.
TSTN
VA_
PULLUP
47 kΩ
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