SI477X-EVB Datasheet, PDF (18/62 Pages) Silicon Laboratories – Complete antenna-to-audio evaluation system

Si477x-EVB
8. Status Indicators: These indicators show the various metrics reported back to the user via either the
AM_RSQ_STATUS or AM_ACF_STATUS API commands. Commonly used metrics include the following:
RSSI: The Received Signal Strength Indicator at the IC input. Note that this will vary from the actual
antenna RSSI due to front end gains or losses.
SNR: The Signal to Noise Ratio at the demodulator input. Note that this is not the SNR of the Audio output.
LASSI: Adjacent Signal Strength Indicator. Indicates (signal + noise) at the low-side adjacent frequency in
dB relative to the wanted carrier.
HASSI: Adjacent Signal Strength Indicator. Indicates (signal + noise) at the high-side adjacent frequency
in dB relative to the wanted carrier.
Freq Off: Frequency offset of received signal.
Chan BW: Receiver channel bandwidth.
Hicut: Hicut corner frequency.
Soft Mute: Indicates the attenuation applied.
9. Status Indicator Undock: Opens a separate window with status indicators, as shown in Figure 22. “AM
Status Indicator Window”.
Figure 22. AM Status Indicator Window
10. Band Selector: Chooses which AM/SW/LW band to use for frequency tuning/seeking
Notes:
Many of these mitigation engines and indicators are configured via properties.
Refer to the Programming Guide for specific detail, including configuration, applicable ranges, etc.
The USB power supply is provided for convenience only. Better performance will be attained using the
external 9 V supply option.
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Rev. 0.4