Cirrus Logic CS4221 - Manual (Page 11)

CS4220 CS4221
DS284PP3 11
3. TYPICAL CONNECTION DIAGRAM — CS4221
AINL+
AINL-
1 µF + 0.1 µF
2
Ω
0.1 µF + 1 µF
+5V
Supply
21 6
VA VD
Ferrite Bead
2.2 nF
150
Ω
150
Ω
AINR+
AINR-
2.2 nF
150
Ω
150
Ω
20
19
17
16
22 7
AGND DGND
12
27
Microcontroller AD0/CS
RST
CS4221
18
I2C/SPI
R = 500
Ω
NC
1
NC
14
NC
15
NC
28
s
0.1 µF + 1 µF
+2.7 - 5V
10
11
SCL/CCLK
SDA/CDIN
* Required for
Master Mode only
4
5
Audio
DSP
SCLK
LRCK
9
SDIN
8
SDOUT
R
s
R
s
R
s
R
s
13
VL
*
47 k
Ω
25
26
AOUTL+
AOUTL-
24
23
Analog Filter
AOUTR+
AOUTR-
XTI
XTO
2
3 External
Clock Input
40 pF
40 pF
Eliminate the crystal
and capacitors when
using an external
clock input
Analog Filter
Figure 5. CS4221 Recommended Connection Diagram
(Also see Recommended Layout Diagram)