User`s guide

Si47xx-EVB
104 Rev. 0.8
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.
Stop at Limit or
Wrap at Limit
All
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.
0–63 dBµV All
Seek SNR
Threshold (dB)
Seek SNR threshold is a metric that is used when
using the seek feature. Any signal with an SNR lower
than the threshold will be ignored during a seek.
0–63 dB All
Spacing
Allows specification of the step spacing when tuning
with the GUI.
9 or 10 kHz All
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.
Automatic: 0
Manual: 1–6143
All except Si4710-
A10
Soft Mute Attack
Rate (dB/s)
Sets the attack rate for entering soft mute.
1–31999 dB/s Si4740/41/42/43/
44/45
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.
1–5 All
Soft Mute Max
Attenuation (dB)
Soft mute attenuation is the amount of attenuation
that takes place when the signal falls below the soft
mute threshold.
0–63 dB
0 = disable
All
Soft Mute
Release Rate
(dB/s)
Sets the release rate for leaving soft mute.
1–31999 dB/s Si4740/41/42/43/
44/45
Soft Mute SNR
Threshold (dB)
Soft mute SNR threshold is the level below which soft
mute is activated.
0–63 dB All
Table 26. AM Receiver Property Window Descriptions (Continued)
Name Description Range Applicable
Devices