JPS6446319A - Phase locked loop circuit - Google Patents

Phase locked loop circuit

Info

Publication number
JPS6446319A
JPS6446319A JP62202658A JP20265887A JPS6446319A JP S6446319 A JPS6446319 A JP S6446319A JP 62202658 A JP62202658 A JP 62202658A JP 20265887 A JP20265887 A JP 20265887A JP S6446319 A JPS6446319 A JP S6446319A
Authority
JP
Japan
Prior art keywords
frequency
phase
reset
division circuit
frequency division
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP62202658A
Other languages
Japanese (ja)
Inventor
Yukitomi Fujishima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP62202658A priority Critical patent/JPS6446319A/en
Publication of JPS6446319A publication Critical patent/JPS6446319A/en
Pending legal-status Critical Current

Links

Landscapes

  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

PURPOSE:To obtain a fast and stable frequency pull-in operation even when a loop filter time constant is increased, by locking the phase of an output signal compulsorily with that of an input signal in a state where the phase is unlocked. CONSTITUTION:A reset signal outputted from a reset signal generation circuit 18 is supplied to a frequency division circuit 13. At the frequency division circuit 13, the frequency-divided value of a counter provided on its inside is reset complusorily to a value supplied to an input terminal 19. And to the input terminal 19, the frequency-divided value of the frequency division circuit 13 in a phase locked state is supplied. Therefore, the frequency division circuit 13 is reset compulsorily to the frequency-divided value in phase locking at the time of supplying the reset signal, and the phase of the output signal is locked with that of the input signal compulsorily. In such a way, it is possible to perform the fast and stable frequency pull-in operation even when the loop filter time constant is increased.
JP62202658A 1987-08-14 1987-08-14 Phase locked loop circuit Pending JPS6446319A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62202658A JPS6446319A (en) 1987-08-14 1987-08-14 Phase locked loop circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62202658A JPS6446319A (en) 1987-08-14 1987-08-14 Phase locked loop circuit

Publications (1)

Publication Number Publication Date
JPS6446319A true JPS6446319A (en) 1989-02-20

Family

ID=16460997

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62202658A Pending JPS6446319A (en) 1987-08-14 1987-08-14 Phase locked loop circuit

Country Status (1)

Country Link
JP (1) JPS6446319A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0575454A (en) * 1991-09-13 1993-03-26 Sanyo Electric Co Ltd Pll circuit
US5304954A (en) * 1991-08-08 1994-04-19 Fujitsu Limited PLL synthesizer having frequency dividers with reset control

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5304954A (en) * 1991-08-08 1994-04-19 Fujitsu Limited PLL synthesizer having frequency dividers with reset control
JPH0575454A (en) * 1991-09-13 1993-03-26 Sanyo Electric Co Ltd Pll circuit

Similar Documents

Publication Publication Date Title
EP0332467A3 (en) Circuit for detecting a lock of a phase locked loop
JPS6472625A (en) Receiver
JPS57164620A (en) Phase comparator
EP0378190A3 (en) Digital phase locked loop
JPS6446319A (en) Phase locked loop circuit
EP0357374A3 (en) Phase-locked loop
EP0288007A3 (en) Signal generating apparatus using pll circuit
JPS6436186A (en) Low frequency chrominance signal converter
JPS5550191A (en) Electronic timepiece
TW236052B (en) A phase locked loop and method of operation
JPS6424630A (en) Pll circuit
JPS6434017A (en) Frequency synthesizer using phase locked loop
JPS6432532A (en) Phase locked loop circuit
GB1495203A (en) Phase locked loop circuits
JPS6429078A (en) Bco device
JPS6424632A (en) Phase locked loop circuit
JPS5599886A (en) Frequency modulator
JPS5784695A (en) Control circuit for transmission frequency
JPS5582568A (en) Afc circuit
JPS57188111A (en) Synchronizing detection circuit
JPS5483753A (en) Pll frequency synthesizer system
JPS5738031A (en) Phase controlling circuit
JPS57123718A (en) Electronic channel selector
JPS6489620A (en) N-fraction type frequency synthesizer
JPS56161727A (en) Pll system frequency synthesizer