si4330 Silicon Laboratories, si4330 Datasheet - Page 132

• Manufacturer Part Number: si4330
• Description: Si4330 Ism Receiver
• Manufacturer: Silicon Laboratories

Register 72h. Frequency Deviation
Register 73h. Frequency Offset 1
Si4330
Reset value = 00100000
Note: It's recommended to use modulation index of 1 or higher (maximum allowable modulation index is 32). The modulation
Reset value = 00000000
Reading from this register will give the AFC correction last results, not this register value.
132
Name
Name
Type
Type
Bit
Bit
7:0
7:0
Bit
Bit
index is defined by 2F
modulation index is defined by F
Name
fd[7:0]
Name
fo[7:0]
D7
D7
Frequency Deviation Setting.
See formula above.
Frequency Offset Setting.
The frequency offset can be calculated as Offset = 156.25 Hz x (hbsel + 1) x fo[7:0].
fo[9:0] is a twos complement value. Reading from this register will give the AFC correc-
tion last results, not this register value.
D6
D6
N
/F
R
were F
D
/R
D
B
D5
D5
is the deviation and R
.
Preliminary Rev 0.2
D4
D4
fd[7:0]
fo[7:0]
R/W
R/W
B
is the data rate. When Manchester coding is enabled the
Function
Function
D3
D3
D2
D2
D1
D1
D0
D0