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Table 3-11. Wind-Noise Digital Filter Characteristics
Test conditions (unless specified otherwise): MCLK = 12 MHz; MCLK_SRC_SEL = 0; Fs
Passband –3.0-dB corner
Passband –0.05-dB corner
Passband ripple (–0.05-dB corner to 0.417
Filter settling time
1.Responses are clock dependent and scale with Fs
the x-axis scale by Fs. Passband frequencies above the transition-band response plot
values are determined by multiplying the x-axis scale shown in the transition band plot and passband frequencies above by a factor of Fs
2.Wind-noise HPF characteristics apply only if the given filter is enabled
DS1083F2
1,2
Parameters
ADC_WNF_CF
ADC_WNF_CF = 001
ADC_WNF_CF = 010
ADC_WNF_CF = 011
ADC_WNF_CF = 100
ADC_WNF_CF = 101
ADC_WNF_CF = 110
ADC_WNF_CF = 111
ADC_WNF_CF = 000
ADC_WNF_CF = 001
ADC_WNF_CF = 010
ADC_WNF_CF = 011
ADC_WNF_CF = 100
ADC_WNF_CF = 101
ADC_WNF_CF = 110
ADC_WNF_CF = 111
; normalized to 0.417
Fs
INT
ADC_WNF_CF = 000
ADC_WNF_CF = 001
ADC_WNF_CF = 010
ADC_WNF_CF = 011
ADC_WNF_CF = 100
ADC_WNF_CF = 101
ADC_WNF_CF = 110
ADC_WNF_CF = 111
. The full-band response plot
INT
3 Characteristics and Specifications
= 48 kHz; ADC HPF disabled.
INT
Minimum
= 000
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
)
—
Fs
INT
—
—
—
—
—
—
—
—
(Fig.
9-28) is normalized to Fs
(Fig.
9-29) are for a Fs
(ADC_WNF_EN
= 1). Otherwise, the signal is unaffected by this block.
CS42L42
Typical
Maximum
160
—
180
—
200
—
220
—
240
—
260
—
280
—
300
—
280
—
315
—
350
—
385
—
420
—
455
—
490
—
525
—
—
0.15
731/
—
Fs
INT
650/
Fs
—
INT
585/
—
Fs
INT
532/
—
Fs
INT
487/
—
Fs
INT
450/
—
Fs
INT
418/
Fs
—
INT
390/
—
Fs
INT
and is denormalized by multiplying
INT
of 48 kHz. Frequencies for other Fs
INT
/48 kHz.
INT
Unit
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
dB
s
s
s
s
s
s
s
s
INT
15
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