Figure 13. de-emphasis curve, Figure 14. atapi block diagram, Cs4391 – Cirrus Logic CS4391 User Manual
Page 31
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CS4391
DS335PP4
31
L R C K
S C L K
L e ft C h a n n e l
R ig h t C h a n n e l
S D A T A
6
5
4
3
2
1
0
9
8
7
15 14 1 3 1 2 11 10
1
0
6
5
4
3
2
1
0
9
8
7
1 5 1 4 1 3 1 2 1 1 1 0
17 16
1 7 1 6
3 2 cloc ks
1 9 1 8
1 9 1 8
Figure 11. Format 4, Right Justified 20-Bit Data. (Available in Control Port Mode only)
L R C K
S C L K
L eft C h a nn e l
R ig h t C h a n ne l
S D A T A
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
Figure 12. Format 5, Right Justified 18-Bit Data. (Available in Control Port Mode only)
Gain
dB
-10dB
0dB
Frequency
T2 = 15 µs
T1=50 µs
F1
F2
3.183 kHz
10.61 kHz
Figure 13. De-Emphasis Curve
Σ
Σ
A Channel
Volume
Control
AoutA
AoutB
Left Channel
Audio Data
Right Channel
Audio Data
B Channel
Volume
Control
MUTE
MUTE
Figure 14. ATAPI Block Diagram
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