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User`s guide

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Si47xx-EVB
Rev. 0.8 103
Digital Format
Format of digital audio output.
I2S, Left-Justified,
DSP
Si4705/06,
Si4731/35/37/39,
Si4730/34/36/38-
D60 and later,
Si4741/43/45,
Si4784/85
Digital Mono
Mode Enable
ON enables mono in digital audio output.
ON, OFF Si4705/06,
Si4731/35/37/39,
Si4730/34/36/38-
D60 and later,
Si4741/43/45,
Si4784/85
Digital Sample
Precision
Digital audio output bit precision.
8-bit, 16-bit, 20-bit,
24-bit
Si4705/06,
Si4731/35/37/39,
Si4730/34/36/38-
D60 and later,
Si4741/43/45,
Si4784/85
Digital Sample
Rate Hz
DFS sample rate for digital input signal. Recom-
mended values are: 32 kHz, 44.1 kHz, or 48 kHz.
Over-sampling rate must be set in order to satisfy a
minimum DCLK of 1 MHz. Sample rate must be set to
0 before DCLK/DFS is removed.
0, 32000–48000 Hz Si4705/06,
Si4731/35/37/39,
Si4730/34/36/38-
D60 and later,
Si4741/43/45,
Si4784/85
Noise Blanker
Delay
Delay in microseconds before applying noise blank-
ing to the original samples.
125–205 µs Si4742/43/44/45
Noise Blanker
Detect Threshold
Sets the threshold for detecting impulses in dB above
the noise floor. If set to 0, impulse noise blanking is
disabled.
0 – 90 dB Si4742/43/44/45
Noise Blanker IIR
Filter
Sets the cut-off frequency for the low pass filter that is
used for noise floor estimation in noise blanker detec-
tion.
300–1600 Si4742/43/44/45
Noise Blanker
Interval
Interval original samples are replaced by interpolated
clean samples.
8 – 48 µs Si4742/43/44/45
Noise Blanker
Rate
Maximum noise blanking rate.
100 – 6400 Hz Si4742/43/44/45
Band Bottom
Limit (kHz)
The lower frequency limit for the seek function. This
is set automatically by the GUI based on spacing
selection.
10 kHz Spacing:
520 kHz
9 kHz Spacing:
510 kHz
All
Band Top Limit
(kHz)
The upper frequency limit for the seek function.
1710 kHz All
Channel Filter
Channel Filter allows the user to select the bandwidth
of the bandpass channel filter.
1, 1.8, 2, 3, 4,
6kHz
All
Table 26. AM Receiver Property Window Descriptions (Continued)
Name Description Range Applicable
Devices