SI4123 SILABS [Silicon Laboratories], SI4123 Datasheet - Page 21

• Manufacturer Part Number: SI4123
• Description: DUAL-BAND RF SYNTHESIZER WITH INTEGRATED VCOS FOR WIRELESS COMMUNICATIONS
• Manufacturer: SILABS [Silicon Laboratories]

4. Control Registers
Note: Registers 9–15 are reserved. Writes to these registers might result in unpredictable behavior. Registers not listed here
Register Name
15
0
1
2
3
4
5
6
7
8
9
.
.
.
are reserved and should not be written.
Main
Configura-
tion
Phase
Detector
Gain
Powerdown
RF1
N-Divider
RF2
N-Divider
IF N-Divider
RF1
R-Divider
RF2
R-Divider
IF R-Divider
Reserved
Reserved
Bit
17
0
0
0
0
0
0
0
0
Bit
16
0
0
0
0
0
0
0
Bit
15
0
0
0
0
0
0
Bit
14
0
0
0
0
0
0
Table 12. Register Summary
AUXSEL
Bit
13
0
0
0
0
0
[1:0]
Bit
12
0
0
Bit
11
Rev. 1.61
0
0
IFDIV
[1:0]
Bit
10
0
0
Bit
9
0
0
0
N
RF1
N
Bit
0
0
0
8
RF2
[17:0]
N
IF
Bit
[16:0]
7
0
0
0
[15:0]
R
R
Bit
6
0
0
0
R
RF1
RF2
IF
[12:0]
LPWR
[12:0]
[12:0]
Bit
0
5
K
PI
[1:0]
Bit
4
0
0
AUTO
PDB
Bit
K
0
3
P2
[1:0]
AUTO
Si4133
Bit
K
2
0
P
PWR
PDIB
Bit
RF
K
1
P1
[1:0]
PDRB
Bit
0
0
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