
| Ref.: |
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SpaceWire Router |
| UserManual | |
Issue: | 3.4 | ||
User Manual | |||
Date: | 11th July 2008 | ||
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Figure 5-3 PLL with external components
The PLL loop filter component values to be used are
R = 10 kΩ
C = 120 pF
C0 = 3.3 pf.
The VCO bias resistor depends on the required VCO frequency range which is determined by the PLL feedback divider (NF in Figure
Rvco = 4.7 kΩ for
Rvco = 1.8 kΩ for
See section 5.1 for information about the FEEDBDIV inputs.
A dedicated decoupling capacitors (100 nF and 1µF) are required for the PLL power supply.
Preliminary | 46 |