si514 Silicon Laboratories, si514 Datasheet - Page 17

• Manufacturer Part Number: si514
• Description: Any-frequency I 2c Programmable Xo 100 Khz To 250 Mhz
• Manufacturer: Silicon Laboratories

4.2. Register Detailed Description
Note: Registers not shown are reserved. Registers with reserved bits are read-modify-write.
Register 0.
Register 5.
Register 6.
7:4
3:0
7:0
7:0
Bit
Bit
Bit
Default
Default
Default
Name
Name
Name
Type
Type
Type
Bit
Bit
Bit
M_Frac[15:8] Fractional part of feedback divider M that sets up the output frequency. Frequency
M_Frac[7:0]
LP1[3:0]
LP2[3:0]
Name
Name
Name
7
7
7
Sets loop compensation factor LP1. Value depends on VCO frequency.
Sets loop compensation factor LP2. Value depends on VCO frequency.
Fractional part of feedback divider M that sets up the output frequency. Frequency
updates take effect when M_Int[8:3] is written.
updates take effect when M_Int[8:3] is written.
6
6
6
LP1[3:0]
Varies
R/W
5
5
5
Preliminary Rev. 0.9
4
4
4
M_Frac[15:8]
M_Frac[7:0]
Varies
Varies
R/W
R/W
Function
Function
Function
3
3
3
2
2
2
LP2[3:0]
Varies
R/W
1
1
1
Si514
0
0
0
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