AN543
Rev. 0.9
177
Property 0x360B FM_HICUT_MULTIPATH_RELEASE_TIME
The FM_HICUT_MULTIPATH_RELEASE_TIME property sets the transition time for which the HICUT mitigation
engine increases the cutoff frequency based on Multipath. 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: 4000
Units: ms
Property 0x3610 FM_HICUT_USN_THRESHOLDS
The FM_HICUT_USN_THRESHOLDS property sets the USN thresholds for HICUT to begin band limiting and
reach maximum band limiting on L+R channel based on max and min cutoff frequencies (set by Property 0x3611)
on the HICUT engine. 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: 0x250F
Units: –dBFS
FM_HICUT_MULTIPATH_RELEASE_TIME
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
RELEASE[15:0]
0x0FA0
Bit
Name
Function
15:0
RELEASE[15:0]
Sets the transition time for which the HICUT mitigation engine increases the
cutoff frequency based on Multipath.
Default is 4000 ms. Range is 1–32767 ms.
FM_HICUT_USN_THRESHOLDS
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
USNMIN[7:0]
USNMAX[7:0]
0x25
0x0F
Bit
Name
Function
15:8
USNMIN[7:0]
Sets the USN level at which HICUT reaches max band limiting on the L+R
channel based on cutoff frequency set by property 0x3611.
Default is –37 dBFS. Range is 0–127 –dBFS.
7:0
USNMAX[7:0]
Sets the Multipath level at which HICUT begins to band limit on the L+R
channel based on cutoff frequency set by property 0x3611.
Default is –15 dBFS. Range is 0–127 –dBFS.