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CS44210 데이터시트(PDF) 24 Page - Cirrus Logic

부품명 CS44210
상세설명  DIGITAL PWM CONTROLLER WITH HEADPHONE MONITOR
PDF  38 Pages
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제조업체  CIRRUS [Cirrus Logic]
홈페이지  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

CS44210 데이터시트(HTML) 24 Page - Cirrus Logic

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CS44210
24
DS539PP1
4.9.5 DE-EMPHASIS CONTROL (DEM)
Default = 00
00 - Disabled
01 - 44.1 kHz
10 - 48 kHz
11 - 32 kHz
Function:
Selects the appropriate digital filter to maintain the standard 15
µs/50 µs digital de-emphasis filter re-
sponse at 32, 44.1 or 48 kHz sample rates (see Figure 7).
Note: De-emphasis is not available in double speed mode.
DBS = 1
MCLKDIV = 0
DBS = 1
MCLKDIV = 1
LRCK
(kHz)
MCLK/
LRCK
MCLK
(MHz)
MCLK/
LRCK
MCLK
(MHz)
FRQSFT1
FRQSFT0
CLKDIV1
CLKDIV0
PWM
Switching
Freq. (kHz)
96
128
12.288
256
24.576
0000
96
192
18.432
384
36.864
0001
384
96
256
24.576
512
49.152
0010
Table 13. Double Speed Clock Modes - Control Port Mode
LRCK
(kHz)
MCLK/
LRCK
MCLK
(MHz)
PWM
Switching
Freq. (kHz)
96
128
12.288
384
96
192
18.432
Table 14. Double Speed Clock Modes - Stand-Alone Mode
Gain
dB
-10dB
0dB
Frequency
T2 = 15 µs
T1=50 µs
F1
F2
3.183 kHz
10.61 kHz
Figure 7. De-Emphasis Curve



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