si5351 Silicon Laboratories, si5351 Datasheet - Page 31

• Manufacturer Part Number: si5351
• Description: Si5350a Factory-programmable Cmos Clock Generator
• Manufacturer: Silicon Laboratories

Reset value = 0000 0000
Reset value = 11xx xxxx
Register 177. PLL Reset
Register 183. Crystal Internal Load Capacitance
Bit
4:0
Name
Name
Bit
7:6
5:0
Type
Type
7
6
5
Bit
Bit
XTAL_CL[1:0] Crystal Load Capacitance Selection.
PLLB_RST PLLB_Reset.
PLLA_RST PLLA_Reset.
Reserved
Reserved
PLLB_RST
Reserved
Name
Name
R/W
R/W
D7
D7
XTAL_CL[1:0]
Writing a 1 to this bit will reset PLLB. This is a self clearing bit (Si5351A/C only).
Reserved. Leave as default.
Writing a 1 to this bit will reset PLLA. This is a self clearing bit.
Reserved. Leave as default.
These 2 bits determine the internal load capacitance value for the crystal. See "2.1.1.
Crystal Inputs (XA, XB)" on page 8.
00: Reserved. Do not select this option.
01: Internal CL = 6 pF.
10: Internal CL = 8 pF.
11: Internal CL = 10 pF (default).
Reserved. Leave as default.
R/W
R/W
D6
D6
PLLA_RST
R/W
R/W
D5
D5
R/W
R/W
Rev. 0.1
D4
D4
Function
Function
R/W
R/W
D3
D3
R/W
R/W
D2
D2
Si5351A/B/C
R/W
R/W
D1
D1
R/W
R/W
D0
D0
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