Programmable RAS/CAS generation circuit

Details Programmable RAS/CAS generation circuit Programmable RAS/CAS generation circuit

1995-11-07

1998-05-19

Butler, Dennis M.

395559, 395494, G06F 104, G06F 1200

Patent

active

057548340

ABSTRACT:
A circuit which increases the speed margin and reduces the circuit size of a programmable RAS/CAS generation circuit. At the beginning of the third cycle {3} in execution cycle (EX), reset signal (reset) is provided to 2-bit counter 52 along with count enable signal (cntenable) and CAS start signal (casstart). In the case of the 0 wait mode, 2-bit counter 52 is operated with count loop (0) and continues to output count value (0). Control signal generating circuit 54 makes CAS.sub.-- active initially midway through the cycle (third cycle {3} during which the count output from 2-bit counter 52 has started and decodes (monitors) the count output (decode0,1,2) from 2-bit counter 52 thereafter with wait count set data (0wait-3wait) as a parameter. In this case, the value of count output (decode0,1,2) is as is at (0), so control signal generating circuit 54 generates CAS.sub.-- of the same phase (namely, first transition and last transition occur at the same timing) by synchronizing it with system clock pulse (CLOCK).

REFERENCES:
patent: 5210856 (1993-05-01), Auvinen et al.
patent: 5239639 (1993-08-01), Fischer et al.
patent: 5418924 (1995-05-01), Dresser

Affiliated with

Also associated with

Rating

Programmable RAS/CAS generation 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 Programmable RAS/CAS generation circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Programmable RAS/CAS generation circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1863928