A N 5 4 3
106
Rev. 0.9
Property 0x1306 FM_ACF_CONTROL_SOURCE
The FM_ACF_CONTROL_SOURCE property determines the controlling metric for ACF features. 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.
Si475x-A40 and earlier, Default: 1
Si475x/5xC-A55, Default: 3
FM_ACF_CONTROL_SOURCE
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x0000
AFC_SM DEV_CHBW
USE_MULT-
PATH
0x0000
0
0
1
Bit
Name
Function
15:1
Reserved
Always write 0.
2
AFC_SM
(Only applicable to Si475x-A20 and later)
When set, softmute will be triggered by an AFC rail. Default is 0.
0 = Do not use AFC rail to force a softmute.
1 = Use AFC rail to force maximum softmute attenuation set by
FM_SOFT_MUTE_MAX_ATTENUATION property (0x400).
1
DEV_CHBW
(Only applicable to Si475x-A20 and later)
When set, STRONGDEV will be used instead of RSSI as the controlling metric for
Channel Filter Bandwidth. Default is 0.
0 = Use RSSI as the controlling metric for weak signal Channel Filter Bandwidth
control.
1 = Use STRONGDEV as the controlling metric for weak signal Channel Filter
Bandwidth control.
0
USE_MULTPATH
(Only applicable to Si475x/5xC-A55 and later)
When cleared to 0, ASSI200DEV will be used instead of Multipath as the controlling
metric for softmute. Default is 1.
0 = Use ASSI200DEV as the controlling metric for softmute.
1 = Use MultiPath as the controlling metric for softmute.