JPS6449424A - Pulse swallow frequency devision device - Google Patents

Pulse swallow frequency devision device

Info

Publication number
JPS6449424A
JPS6449424A JP20518287A JP20518287A JPS6449424A JP S6449424 A JPS6449424 A JP S6449424A JP 20518287 A JP20518287 A JP 20518287A JP 20518287 A JP20518287 A JP 20518287A JP S6449424 A JPS6449424 A JP S6449424A
Authority
JP
Japan
Prior art keywords
scaler
frequency division
division ratio
modulus
switching
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
JP20518287A
Other languages
Japanese (ja)
Inventor
Osamu Takeda
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Priority to JP20518287A priority Critical patent/JPS6449424A/en
Publication of JPS6449424A publication Critical patent/JPS6449424A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE:To enable a settable range to be extended, by constituting the titled device of a swallow counter and a programmable counter by using a 2 modulus pre-scaler, and switching a frequency division ratio. CONSTITUTION:The 2 modulus pre-scaler 1 capable of switching the frequency division ratio to two or more kinds of different frequency ratios can select the frequency division ratios P/P+1 and P-1/P of two systems P/P+1 and P-1/P by a pre-scaler switching control signal 6. By setting the 2 modulus pre-scaler 1 at the P-1/P when the 2 modulus pre-scaler 1 is set at the P/P+1, and the frequency division ratio is not possible to set at a continuous frequency division ratio with an equal interval in a range of N<P-1, it is possible to extend the setting range up to N>P+1/2.
JP20518287A 1987-08-20 1987-08-20 Pulse swallow frequency devision device Pending JPS6449424A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20518287A JPS6449424A (en) 1987-08-20 1987-08-20 Pulse swallow frequency devision device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20518287A JPS6449424A (en) 1987-08-20 1987-08-20 Pulse swallow frequency devision device

Publications (1)

Publication Number Publication Date
JPS6449424A true JPS6449424A (en) 1989-02-23

Family

ID=16502773

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20518287A Pending JPS6449424A (en) 1987-08-20 1987-08-20 Pulse swallow frequency devision device

Country Status (1)

Country Link
JP (1) JPS6449424A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6597162B2 (en) 2000-04-10 2003-07-22 Fujitsu Limited PLL semiconductor device with testability, and method and apparatus for testing same
JP2007230556A (en) * 2007-06-08 2007-09-13 Tokai Rika Co Ltd Shift lever device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6597162B2 (en) 2000-04-10 2003-07-22 Fujitsu Limited PLL semiconductor device with testability, and method and apparatus for testing same
US6876185B2 (en) 2000-04-10 2005-04-05 Fujitsu Limited PLL semiconductor device with testability, and method and apparatus for testing same
JP2007230556A (en) * 2007-06-08 2007-09-13 Tokai Rika Co Ltd Shift lever device

Similar Documents

Publication Publication Date Title
CA2012809A1 (en) Digital signal clamp circuitry
JPS6449424A (en) Pulse swallow frequency devision device
JPS54124611A (en) Communication unit
JPS53112763A (en) Digital display device for automobiles
JPS53139456A (en) Clock driver circuit
JPS5568895A (en) Servomotor positioning apparatus
JPS533076A (en) Charge transfer device
JPS52134365A (en) Counter
JPS5619479A (en) Electronic timer
JPS5397759A (en) Phase synchronizing circuit
EP0204588A3 (en) Digital timer
JPS57152732A (en) Swallow counter
JPS6491085A (en) Time display device
JPS5453956A (en) Timing logic circuit
JPS5370469A (en) Timer device
JPS5377983A (en) Sequence controller
JPS53115485A (en) Speed control pulse oscillator
JPS5245250A (en) Analog to digital convertor
JPS52119002A (en) Signal processing circuit
JPS53102479A (en) Controlling device
JPS56112677A (en) Timer circuit
JPS51116653A (en) Pulse circuit
JPS57157657A (en) Receiving clock generating circuit
JPS52101957A (en) Reference signal generator
JPS52147954A (en) Monostable circuit