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JPS53145542A - Pll synthesizer control circuit - Google Patents

Pll synthesizer control circuit

Info

Publication number
JPS53145542A
JPS53145542A JP6151677A JP6151677A JPS53145542A JP S53145542 A JPS53145542 A JP S53145542A JP 6151677 A JP6151677 A JP 6151677A JP 6151677 A JP6151677 A JP 6151677A JP S53145542 A JPS53145542 A JP S53145542A
Authority
JP
Japan
Prior art keywords
control circuit
pll synthesizer
synthesizer control
pll
refemece
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
JP6151677A
Other languages
Japanese (ja)
Inventor
Tatsuo Kawasaki
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP6151677A priority Critical patent/JPS53145542A/en
Publication of JPS53145542A publication Critical patent/JPS53145542A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/02—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
    • H03J5/0245—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form
    • H03J5/0272—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form the digital values being used to preset a counter or a frequency divider in a phase locked loop, e.g. frequency synthesizer
    • H03J5/0281—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form the digital values being used to preset a counter or a frequency divider in a phase locked loop, e.g. frequency synthesizer the digital values being held in an auxiliary non erasable memory

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

PURPOSE:To secure a correct setting of the control execution time to the prescribed time and thus to ensure a higher-degree controlfunction, by controlling the output of the refemece counter which is a component element of a PLL circuit to ROM of the control circuit.
JP6151677A 1977-05-25 1977-05-25 Pll synthesizer control circuit Pending JPS53145542A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6151677A JPS53145542A (en) 1977-05-25 1977-05-25 Pll synthesizer control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6151677A JPS53145542A (en) 1977-05-25 1977-05-25 Pll synthesizer control circuit

Publications (1)

Publication Number Publication Date
JPS53145542A true JPS53145542A (en) 1978-12-18

Family

ID=13173319

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6151677A Pending JPS53145542A (en) 1977-05-25 1977-05-25 Pll synthesizer control circuit

Country Status (1)

Country Link
JP (1) JPS53145542A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57112136A (en) * 1980-12-29 1982-07-13 Nec Corp Frequency synthesizer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4992913A (en) * 1973-01-09 1974-09-04

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4992913A (en) * 1973-01-09 1974-09-04

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57112136A (en) * 1980-12-29 1982-07-13 Nec Corp Frequency synthesizer

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