AN332 Datasheet, PDF (93/302 Pages) Silicon Laboratories – Si47XX PROGRAMMING GUIDE

AN332
Property 0x1201. FM_RSQ_SNR_HI_THRESHOLD
Sets high threshold which triggers the RSQ interrupt if the SNR is above this threshold. The CTS bit (and optional
interrupt) is set when it is safe to send the next command. This property may only be set or read when in powerup
mode. The default is 127dB.
Available in: All
Default: 0x007F
Units: dB
Step: 1
Range: 0–127
Bit D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Name 0 0 0 0 0 0 0 0 0
SNRH[6:0]
Bit
Name
Function
15:7
Reserved Always write to 0.
FM RSQ SNR High Threshold.
6:0
SNRH
Threshold which triggers the RSQ interrupt if the SNR is above this threshold. Specified
in units of dB in 1 dB steps (0–127). Default is 127 dB.
Property 0x1202. FM_RSQ_SNR_LO_THRESHOLD
Sets low threshold which triggers the RSQ interrupt if the SNR is below this threshold. The CTS bit (and optional
interrupt) is set when it is safe to send the next command. This property may only be set or read when in powerup
mode. The default is 0 dB.
Available in: All
Default: 0x0000
Units: dB
Step: 1
Range: 0–127
Bit D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Name 0 0 0 0 0 0 0 0 0
SNRL[6:0]
Bit
Name
Function
15:7
Reserved Always write to 0.
FM RSQ SNR Low Threshold.
6:0
SNRL
Threshold which triggers the RSQ interrupt if the SNR is below this threshold. Specified
in units of dB in 1 dB steps (0–127). Default is 0 dB.
Rev. 1.0
93