Figure 11. serial audio format 3, Figure 12. optional input buffer, Figure 13. single-ended input application – Cirrus Logic CS4221 User Manual
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CS4220 CS4221
26
DS284PP3
Figure 11. Serial Audio Format 3
Master
Slave
Right-justified, 20-bit data
XTI = 256, 384, 512 Fs (CS4223 - 256 Fs only)
LRCK = 4 to 50 kHz
SCLK = 64 Fs
Right-justified, 20-bit data
XTI = 256, 384, 512 Fs
LRCK = 4 to 50 kHz
SCLK = 64 Fs
LRCK
SCLK
Left Channel
Right Channel
SDATA
6
5
4
3
2
1
0
9
8
7
15 14 13 12 11 10
1
0
6
5
4
3
2
1
0
9
8
7
15 14 13 12 11 10
17 16
17 16
32 clocks
19 18
19 18
Figure 12. Optional Input Buffer
Input
10 µF
+
150
Ω
2.2 nF
4.7 µF +
0.1 µF
AINR-
AINR+
CS4223/4
Figure 13. Single-ended Input Application
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