CS4382A-EQZ CIRRUS [Cirrus Logic], CS4382A-EQZ Datasheet - Page 24
CS4382A-EQZ
Manufacturer Part Number
CS4382A-EQZ
Description
114 dB, 192 kHz 8-channel D/A Converter
Manufacturer
CIRRUS [Cirrus Logic]
Datasheet
1.CS4382A-EQZ.pdf
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24
3.7
SDINx
In software mode the required de-emphasis filter coefficients for 32 kHz, 44.1 kHz, or 48 kHz are selected
via the de-emphasis control bits.
In hardware mode only the 44.1 kHz coefficient is available (enabled through the M2 pin). If the input sam-
ple rate is not 44.1 kHz and de-emphasis has been selected then the corner frequencies of the de-emphasis
filter will be scaled by a factor of the actual Fs over 44,100.
ATAPI Specification
The
ATAPI functions are applied per A-B pair. Refer to Table 7 on page 38 and Figure 14 for additional informa-
tion.
CS4382A
Right Chan nel
Left Chan nel
Audio D ata
Audio D ata
implements the channel mixing functions of the ATAPI CD-ROM specification. The
Figure 14. ATAPI Block Diagram (x = channel pair 1, 2, 3, or 4)
-10dB
Gain
0dB
dB
Figure 13. De-Emphasis Curve
Σ
3.183 kHz
T1=50 µs
F1
A Channel
B Channel
Volume
Volume
Control
Control
10.61 kHz
F2
T2 = 15 µs
Frequency
Σ
MUTE
MUTE
Aout Ax
AoutBx
CS4382A
DS618PP1
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