User`s guide

Si47xx-EVB
70 Rev. 0.8
Seek Band Top
(MHz)
The upper frequency limit for the seek
function. This is set automatically by the
GUI based on band and spacing selection.
US: 107.9 MHz
(200 kHz
spacing)
Europe:
108 MHz
(100 kHz
spacing)
Japan: 90 MHz
Japan Wide:
108 MHz
All
Max Tune Error
(kHz)
Selects the maximum tuning frequency
error before the AFC rail indicator is set.
0–255 kHz All
Seek Mode
Select between stopping the seek at the
band limits or wrapping at the band limits to
return to the starting frequency.
Stop at limit or
wrap at limit
All
Seek RSSI
Threshold (dBuV)
The seek RSSI threshold level used for
seek and scan functions.
0–255 dB All
Seek SNR
Threshold (dB)
The seek SNR threshold level used for seek
and scan functions.
0–255 dB All
Spacing
Channel spacing 50, 100, or
200 kHz
All
Soft Mute Attack
Rate
(dB/s)
Sets the attack rate for entering soft mute. 1–31999 dB/s Si4706-C30 and later,
Si4740/41/42/43/44/45,
Si4704/05/30/31/34/35/84/
85-D50 and later
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.
1–63 Si4704/05/06/3x-C40 and
later, Si4740/41/42/43/44/45
Soft Mute Max
Attenuation (dB)
Maximum attenuation for soft mute. 0–31 dB,
0 = disable soft
mute
All except Si4749
Soft Mute Release
Rate
(dB/s)
Sets the release rate for leaving soft mute. 1–31999 dB/s Si4706-C30 and later,
Si4740/41/42/43/44/45,
Si4704/05/30/31/34/35/84/
85-D50 and later
Soft Mute SNR
Threshold (dB)
SNR threshold level used to engage soft
mute.
0–15 dB All except Si4749
Soft Mute Rate
Selects the soft mute rate. 1–255 dB Si4706/07/20/21/84/85-B20
and earlier,
Si4704/05/30/31/34/35-C40
and earlier
Table 15. FM Receiver Settings Property Window Descriptions (Continued)
Items Description Range Applicable Devices