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参数资料
型号： SI4731-D50-EVB
厂商： Silicon Laboratories Inc
文件页数： 104/164页
文件大小： 0K
描述： BOARD EVAL SI4730/SI4731-D50
标准包装： 1
类型： 接收器
频率： 520kHz ~ 1.71MHz，64MHz ~ 108MHz
适用于相关产品： SI4731
已供物品： 板
Si47xx-EVB
Table 26. AM Receiver Property Window Descriptions (Continued)
Name
Description
Range
Applicable
Devices
Seek Mode
Seek mode specifies the behavior of seek when it
reaches either end of the AM band. The default value
Stop at Limit or
Wrap at Limit
All
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 SNR
Threshold (dB)
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 threshold is a metric that is used when
using the seek feature. Any signal with an SNR lower
0–63 dBμV
0–63 dB
All
All
than the threshold will be ignored during a seek.
Spacing
Allows specification of the step spacing when tuning
9 or 10 kHz
All
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
Automatic: 0
Manual: 1–6143
All except Si4710-
A10
automatically selects the value.
Soft Mute Attack Sets the attack rate for entering soft mute.
Rate (dB/s)
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
1–5
All
specified here times the amount the signal SNR is
below the threshold.
Soft Mute Max
Soft mute attenuation is the amount of attenuation
0–63 dB
All
Attenuation (dB) that takes place when the signal falls below the soft
mute threshold.
0 = disable
Soft Mute
Release Rate
Sets the release rate for leaving soft mute.
1–31999 dB/s
Si4740/41/42/43/
44/45
(dB/s)
Soft Mute SNR Soft mute SNR threshold is the level below which soft
Threshold (dB)
mute is activated.
104
Rev. 0.8
0–63 dB
All
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