Silicon-laboratories SI5351A/B/C Instrukcja Użytkownika Strona 61

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Si5351A/B/C
Preliminary Rev. 0.95 61
Reset value = 0000 0000
Reset value = 11xx xxxx
Register 177. PLL Reset
BitD7D6D5D4D3D2D1D0
Name
PLLB_RST PLLA_RST
Type
R/W R/W R/W R/W R/W R/W R/W R/W
Bit Name Function
7PLLB_RSTPLLB_Reset.
Writing a 1 to this bit will reset PLLB. This is a self clearing bit (Si5351A/C only).
6 Reserved Leave as default.
5PLLA_RSTPLLA_Reset.
Writing a 1 to this bit will reset PLLA. This is a self clearing bit.
4:0 Reserved Leave as default.
Register 183. Crystal Internal Load Capacitance
BitD7D6D5D4D3D2D1D0
Name
XTAL_CL[1:0]
Type
R/W R/W R/W R/W R/W R/W R/W R/W
Bit Name Function
7:6 XTAL_CL[1:0] Crystal Load Capacitance Selection.
These 2 bits determine the internal load capacitance value for the crystal. See "3.1.1.
Crystal Inputs (XA, XB)" on page 11.
00: Reserved. Do not select this option.
01: Internal CL = 6 pF.
10: Internal CL = 8 pF.
11: Internal CL = 10 pF (default).
5:0 Reserved Leave as default.
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