JPS6477223A - Frequency dividing circuit - Google Patents
Frequency dividing circuitInfo
- Publication number
- JPS6477223A JPS6477223A JP23256087A JP23256087A JPS6477223A JP S6477223 A JPS6477223 A JP S6477223A JP 23256087 A JP23256087 A JP 23256087A JP 23256087 A JP23256087 A JP 23256087A JP S6477223 A JPS6477223 A JP S6477223A
- Authority
- JP
- Japan
- Prior art keywords
- prescaler
- frequency
- psc
- frequency division
- divides
- 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.)
- Granted
Links
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
PURPOSE:To extend an operating frequency range and a variable range by controlling a prescaler only in one frequency division cycle by a terminal count signal of a preset counter in a frequency dividing circuit consisting of the prescaler consisting of plural D FFs and the preset counter. CONSTITUTION:Normally, a prescaler 100 supplies an N-divided clock to a preset counter (PSC) 11. The PSC 11 counts the N-divided clock, and the PSC 11 sends a terminal count signal TC to the prescaler 100 when terminating prescribed counting. The prescaler 100 divides the frequency by one of preliminarily set N-2N-1 in on frequency division cycle after reception of the signal TC. Then, the PSC 11 divides the frequency of the N-divided clock by K (>=0), and thereafter, the prescaler divides the frequency by J (N<=J<=2N-1) only in one frequency division cycle after the N-division operation. Thus, a frequency division number M obtained by the PSC 11 and the prescaler 100 is J+K.N and frequency division is continuously performed from N-division.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62232560A JP2530663B2 (en) | 1987-09-18 | 1987-09-18 | Divider circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62232560A JP2530663B2 (en) | 1987-09-18 | 1987-09-18 | Divider circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6477223A true JPS6477223A (en) | 1989-03-23 |
JP2530663B2 JP2530663B2 (en) | 1996-09-04 |
Family
ID=16941243
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62232560A Expired - Lifetime JP2530663B2 (en) | 1987-09-18 | 1987-09-18 | Divider circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2530663B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5787344A (en) * | 1994-06-28 | 1998-07-28 | Scheinert; Stefan | Arrangements of base transceiver stations of an area-covering network |
US6263200B1 (en) | 1996-12-26 | 2001-07-17 | Nec Corporation | Radio terminal apparatus equipped with battery power saving function, and mobile communication system using the same |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52108762A (en) * | 1976-03-09 | 1977-09-12 | Toshiba Corp | Frequency division circuit |
JPS5429954A (en) * | 1977-08-10 | 1979-03-06 | Seiko Epson Corp | Frequency devider circuit |
-
1987
- 1987-09-18 JP JP62232560A patent/JP2530663B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52108762A (en) * | 1976-03-09 | 1977-09-12 | Toshiba Corp | Frequency division circuit |
JPS5429954A (en) * | 1977-08-10 | 1979-03-06 | Seiko Epson Corp | Frequency devider circuit |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5787344A (en) * | 1994-06-28 | 1998-07-28 | Scheinert; Stefan | Arrangements of base transceiver stations of an area-covering network |
USRE37820E1 (en) * | 1994-06-28 | 2002-08-13 | Littlefeet, Inc. | Arrangements of base transceiver stations of an area-covering network |
US6263200B1 (en) | 1996-12-26 | 2001-07-17 | Nec Corporation | Radio terminal apparatus equipped with battery power saving function, and mobile communication system using the same |
Also Published As
Publication number | Publication date |
---|---|
JP2530663B2 (en) | 1996-09-04 |
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