CS44600 Ver la hoja de datos (PDF) - Cirrus Logic
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CS44600 Datasheet PDF : 76 Pages
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CS44600
PWM FILTER CHARACTERISTICS
(Logic “0” = GND = 0 V; Logic “1” = VLS = VLC; VD = 2.5 V; DAI_MCLK = 12.288 MHz; XTAL = 24.576 MHz; PWM
Switch Rate = 384 kHz; Fs = 32 kHz to 192 kHz; Measurement bandwidth is 10 Hz to 20 kHz unless otherwise
specified.)
Parameter
Min
Digital Filter Response (Note 12)
Passband
OSRATE = 0b
to -0.01 dB corner
0
to -3 dB corner
0
OSRATE = 1b (Note 13)
to -0.01 dB corner
0
to -3 dB corner
0
Frequency Response
OSRATE = 0b
10 Hz to 20 kHz -0.8
OSRATE = 1b (Note 13)
10 Hz to 40 kHz -1.2
Group Delay
De-emphasis Error
Fs = 32 kHz
-
(Relative to 1 kHz)
Fs = 44.1 kHz
-
Fs = 48 kHz
-
Typ
Max
Unit
-
1.6
kHz
-
24.0
kHz
-
3.3
kHz
-
44.5
kHz
-
+0.02
dB
-
+0.02
dB
(Note 14)
ms
-
±0.23
dB
-
±0.14
dB
-
±0.09
dB
12. Filter response is not production tested but is characterized and guaranteed by design.
13. XTAL = 49.152 MHz; PWM Switch Rate = 768 kHz; Fs = 96 kHz to 192 kHz.
14. The equation for the group delay through the sample rate converter with OSRATE = 0b is (8.5 / Fsi) + (10
/ Fso) ± (4.5 / Fsi). The equation for the group delay through the sample rate converter with OSRATE = 1b
is (8.5 / Fsi) + (20 / Fso) ± (4.5 / Fsi).
SWITCHING CHARACTERISTICS - XTI
(VD = 2.5 V, VDP = VLC = VLS = 3.3 V, VDX = 2.5 V to 5.0 V; Inputs: Logic 0 = GND, Logic 1 = VDX)
Parameter
XTI period
XTI high time
XTI low time
XTI Duty Cycle
External Crystal operating frequency
Symbol
Min
Typ
tclki
18.518
---
tclkih
8.34
---
tclkil
8.34
---
45
50
24.576
---
Max
40.69
22.38
22.38
55
54
XTI
tclkih
tclkil
tclki
Figure 2. XTI Timings
Unit
ns
ns
ns
%
MHz
DS633F1
11
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