A N 5 4 3
94
Rev. 0.9
Property 0x1102 FM_SEEK_FREQUENCY_SPACING
The FM_SEEK_FREQUENCY_SPACING property selects frequency spacing for FM seek. 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. The default is 100 kHz.
Default: 10
Units: 10 kHz
Property 0x1104 FM_SEEK_CHBW
The FM_SEEK_CHBW property sets the Channel Filter Bandwidth during seek. 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-A20 and earlier: This property is not available. Si475x-A30 and A40, Default: 110
Si475x/5xC-A55, Default: 80
Units: kHz
FM_SEEK_FREQUENCY_SPACING
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x000
FMSKSPACE[4:0]
0x000
0x0A
Bit
Name
Function
15:5
Reserved
Always write 0.
4:0
FMSKSPACE[4:0]
Selects frequency spacing for FM
seek. Default is 10. Range is 1–31.
FM_SEEK_CHBW
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x00
SEEK_CHBW[7:0]
0x00
0x50
Bit
Name
Function
15:8
Reserved
Always write to 0.
7:0
SEEK_CHBW[7:0]
Sets the maximum Channel Filter Bandwidth to allow during seek.
Si475x/5xC-A55,
Default is 80 kHz. Range is
0
–150.
Recommended value for 50 or 100 kHz spacing is 80 kHz. Recom-
mended value for 200 kHz spacing is 110 kHz.
