SI47XX-EVB Datasheet, PDF (69/164 Pages) Silicon Laboratories – Thank you for purchasing the Silicon Laboratories

Si47xx-EVB
Table 15. FM Receiver Settings Property Window Descriptions (Continued)
Items
Description
Range
Applicable Devices
Hi-Cut SNR High _{Sets the SNR level at which hi-cut begins to}
Threshold
band limit.
0 – 127 dB
Si4740/41/42/43/44/45,
Si4704/05-D50 and later,
Si4706-C30 and later,
Si4730/31/34/35/84/85-D50
and later
Hi-Cut SNR Low _{Sets the SNR level at which hi-cut reaches}
Threshold
maximum band limit.
0–127 dB
Si4740/41/42/43/44/45,
Si4704/05-D50 and later,
Si4706-C30 and later,
Si4730/31/34/35/84/85-D50
and later
Noise Blanker Delay _{Delay in microseconds before applying}
noise blanking to the original samples.
125–219 µs
Si4742/43/44/45
Noise Blanker _{Sets the threshold for detecting impulses in}
Detect Threshold _{dB above the noise floor. If set to 0, impulse}
noise blanking is disabled.
0 – 90 dB
Si4742/43/44/45
Noise Blanker IIR Sets the cut-off frequency for the low pass
Filter
filter that is used for noise floor estimation in
noise blanker detection.
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
Antenna Type Receive antenna selection.
Headphone or Si4704/05/06/20/21 only
short antenna
Channel Filter
Selects the channel filter to be used before
demodulation.
Automatic, Si4706, Si4749, Si4704/05/
110 kHz, 84 kHz, 30/31/34/35/84/85-D50 and
60 kHz, and
later
40 kHz
Band
Frequency band
US/Europe:
All
87.5–108 MHz
Japan: 76–
90 MHz
Japan Wide: 76–
108 MHz
Seek Band Bottom _{The lower frequency limit for the seek}
US/Europe:
All
(MHz)
function. This is set automatically by the
87.5 MHz
GUI based on band and spacing selection. _{Japan: 76 MHz}
Japan Wide:
76 MHz
Rev. 0.8
69