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MB15C02 Datasheet, PDF (11/25 Pages) Fujitsu Component Limited. – Single Serial Input PLL Frequency Synthesizer On-Chip prescaler | |||
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MB15C02
(d) Lock detector
The lock detector detects the lock and unlock states of the PLL. The lock detector outputs âHâ when the PLL
enters the lock state and outputs âLâ when the PLL enters the unlock state as shown in Figure 2. When PS =
âLâ, the lock detector outputs âHâ compulsorily.
fr
fp
LD
Figure 2. Phase comparator input/output waveforms (Lock detector)
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