Lines Matching +full:pll +full:- +full:clock +full:- +full:frequency
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6 <title>Clock Discipline Algorithm</title>
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11 <h3>Clock Discipline Algorithm</h3>
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18 <li class="inline"><a href="#pll">Phase-Lock Loop Operations</a></li>
20 <li class="inline"><a href="#house">Clock Initialization and Management</a></li>
24 …clock discipline algorithm, which is best described as an adaptive parameter, hybrid phase/frequen…
26 <p>Figure 1. Clock Discipline Algorithm</p>
28 <h4 id="pll">Clock Discipline Operations</h4>
29 …clock discipline is shown in Figure 1. The timestamp of a reference clock or remote server is com…
30 …PLL mode the frequency predictor is an integral of the offset over past updates, while the phase p…
31 …PLL mode is determined by the <em>time constant</em>, which results in a "stiffness" dep…
33 …clock discipline algorithm is stable and satisfies the Nyquist criterion, which requires that the …
34 …PLL are affected by the time constant and poll interval. At the default poll interval of 64 s and…
35 …clock state machine used with the discipline algorithm avoids this transient at startup. It does …
36 …PLL is linear, the response with different offset step amplitudes and poll intervals has the same …
37 …he poll interval, depends on the network time jitter and the oscillator frequency wander. Errors …
38 …clock under exceptional conditions, as when the daemon is first started or when encountering sever…
39 <h4 id="house">Clock Initialization and Management</h4>
40 …Celsius, the clock oscillator frequency is disciplined to within one part per million (PPM), even …
41 …clock offset error can increase as much as one second per day. When power is restored after sever…
42 …ions. A detailed discussion of these provisions is on the <a href="clock.html">Clock State Machin…
43 …clock oscillator frequency and updates a frequency file at intervals of one hour or more, dependin…
44 …clock offset error at restart, the reference implementation next disables oscillator frequency dis…
45 …clock offset estimate. Normally, this takes several updates before setting the system clock. As …
46 <p>As a result of the above considerations, when a backup source, such as the local clock driver, A…