A N 5 4 3
252
Rev. 0.9
Property 0x2200 AM_CHBW_SQ_MIN_MAX
The AM_CHBW_SQ_MIN_MAX property sets the maximum and minimum Channel Filter Bandwidth in units of 100
Hz based on max(IQSNR,SNR). To force a given Channel Filter Bandwidth, set the min and max to the same
value. 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.
Note:
Since the Si4750/51/52/53 do not support dynamic bandwidth control MIN[7:0] = MAX[7:0], MAX[7:0] determines the
channel filter setting.
Si475x-A20 and earlier, Default: 0x1414
Si475x-A30 and later, Default: 0x2314
Units: 100 Hz
Bit
Name
Function
15:8
SAMPLE[7:0]
Number of samples blanker at 93 kS/s due to longer bursts from automo-
tive environment. Range 2~64.
7:0
THRESH[7:0]
Sets the threshold for detecting longer bursts from automotive environ-
ment. Do not set lower than 7 dB.
AM_CHBW_SQ_MIN_MAX
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
MAX[7:0]
MIN[7:0]
0x23
0x14
Bit
Name
Function
15:8
MAX [7:0]
Sets the maximum Channel Filter Bandwidth in units of 100 Hz.
Default is 3.5 kHz.
Range is 15–100.
7:0
MIN [7:0]
Sets the minimum Channel Filter Bandwidth in units of 100 Hz.
Default is 2 kHz.
Range is 15–100.
