Clock doubler and smooth transfer circuit

Details Clock doubler and smooth transfer circuit Clock doubler and smooth transfer circuit

1995-05-19

1996-12-31

Heckler, Thomas M.

395281, G06F 104, G06F 112

Patent

active

055903169

ABSTRACT:
An apparatus is disclosed for smoothly multiplying the frequency of a computer's basic clock during a burst transfer cycle and smoothly resuming the basic clock frequency upon completing the burst transfer cycle. A fixed frequency multiplier is connected to the basic clock to generate a clock whose frequency is a multiple of the basic clock frequency. A decoder which operates synchronously with the fixed frequency multiplier clock responds to control signals of the expansion bus to detect the start and the end of a burst transfer cycle. The decoder also toggles a speed-up signal during the burst transfer cycle on the rising edges of the fixed frequency multiplier clock. The speed-up signal and the basic clock is provided to a variable frequency multiplier which multiplies the frequency of the basic clock when the speed-up signal is toggled and reproduces the frequency of the basic clock when the speed-up signal is deasserted, thus providing a clock signal whose rising edges are aligned with the rising and falling edges of the basic clock and whose frequency is a multiple of the basic clock frequency during the burst transfer cycle.

REFERENCES:
patent: 4984195 (1991-01-01), Nakamura et al.
patent: 5101492 (1992-03-01), Schultz et al.
patent: 5295247 (1994-03-01), Chang et al.
patent: 5448715 (1995-09-01), Lelm et al.
patent: 5485602 (1996-01-01), Ledbetter, Jr. et al.
EISA With Enhanced Master Burst (EMB), Addendum (Rev. 1) .COPYRGT.1993 BCPR Services, Inc.

Affiliated with

Also associated with

Rating

Clock doubler and smooth transfer circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Clock doubler and smooth transfer circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Clock doubler and smooth transfer circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1149526