SI47XX-EVB Datasheet, PDF (104/164 Pages) Silicon Laboratories – Thank you for purchasing the Silicon Laboratories

Si47xx-EVB
Table 26. AM Receiver Property Window Descriptions (Continued)
Name
Description
Seek Mode _{Seek mode specifies the behavior of seek when it}
reaches either end of the AM band. The default value
makes the seek wrap around and start at the other
end of the AM band. The other option makes seek
stop if it reaches either end of the AM band without
finding an AM station.
Seek RSSI
Threshold
(dBµV)
Seek RSSI threshold is a metric that is used when
using the seek feature. Any signal with an RSSI lower
than the threshold will be ignored during a seek.
Seek SNR Seek SNR threshold is a metric that is used when
Threshold (dB) using the seek feature. Any signal with an SNR lower
than the threshold will be ignored during a seek.
Spacing _{Allows specification of the step spacing when tuning}
with the GUI.
Varactor
Capacitor
Overwrite
Varactor capacitance overwrite allows the specifica-
tion of the capacitance presented to the AMI pin from
the tunable capacitor inside the part. A value of 0
automatically selects the value.
Soft Mute Attack Sets the attack rate for entering soft mute.
Rate (dB/s)
Soft Mute
Attenuation
Slope
(dB/dB)
Soft mute attenuation slope specifies the slope of the
attenuation curve when the signal SNR is below the
soft mute SNR threshold. It is specified as dB/dB
where the attenuation applied is simply the value
specified here times the amount the signal SNR is
below the threshold.
Soft Mute Max Soft mute attenuation is the amount of attenuation
Attenuation (dB) that takes place when the signal falls below the soft
mute threshold.
Soft Mute _{Sets the release rate for leaving soft mute.}
Release Rate
(dB/s)
Soft Mute SNR _{Soft mute SNR threshold is the level below which soft}
Threshold (dB) _{mute is activated.}
Range
Stop at Limit or
Wrap at Limit
0–63 dBµV
0–63 dB
9 or 10 kHz
Automatic: 0
Manual: 1–6143
1–31999 dB/s
1–5
0–63 dB
0 = disable
1–31999 dB/s
0–63 dB
Applicable
Devices
All
All
All
All
All except Si4710-
A10
Si4740/41/42/43/
44/45
All
All
Si4740/41/42/43/
44/45
All
104
Rev. 0.8