JPS6449424A - Pulse swallow frequency devision device - Google Patents
Pulse swallow frequency devision deviceInfo
- 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
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.
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)
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 |
-
1987
- 1987-08-20 JP JP20518287A patent/JPS6449424A/en active Pending
Cited By (3)
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 |
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