AN645 Datasheet, PDF (166/202 Pages) Silicon Laboratories – Si477X PROGRAMMING GUIDE

AN645
Property 0x1303 AM_ACF_HICUT_THRESHOLD
The AM_ACF_HICUT_THRESHOLD property sets the Hi-cut interrupt threshold in units of 100 Hz. When the Hi-
cut cutoff frequency falls below this threshold and the Hi-cut_INT interrupt is enabled through the
AM_ACF_INTERRUPT_SOURCE property, the Hi-cut_ INT interrupt will be asserted. 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 in powerup mode.
Default: 0
Units: 100 Hz
AM_ACF_HICUT_THRESHOLD
15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
0x00
HICUT_THRESH[7:0]
0x00
0x00
Bit
Name
Function
15:8
Reserved
Always write 0.
Hi-cut interrupt threshold in units of 100 Hz, which triggers the Hi Cut Inter-
7:0
HICUT_THRESH[7:0] rupt when the Hi-cut cutoff frequency falls below this threshold. Default is
0 kHz. Range is 0–200.
Property 0x1306 AM_ACF_CONTROL_SOURCE
The AM_ACF_CONTROL_SOURCE property determines if SNR or RSSI will be used as the controlling metric for
ACF features. This will affect all automatically controlled features that are controlled by SNR. 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 in
powerup mode.
Default: 0
AM_ACF_CONTROL_SOURCE
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
0x0000
0x0000
0
USE_RSSI
0
Bit
Name
Function
15:1
Reserved
Always write 0.
When set, RSSI will be used instead of SNR as the ACF controlling metric.
0
USE_RSSI
0 = Use SNR as the controlling metric.
1 = Use RSSI as the controlling metric.
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Rev. 0.3