US 2007/0176696 A1 · Programmable oscillators for high frequency clock generation for simulation environments

Abstract

A method and programmable oscillator model are provided for implementing high frequency clock generation for a simulation environment. The programmable oscillator model includes an internal ring oscillator for generating a high frequency clock. The internal ring oscillator counts a number of clocks and determines when to switch the reference clock. For example, a clock edge time is recorded as a two-byte field, where a high byte records a programmable number of fast clocks per clock edge, and a low byte records a fraction of a clock edge. Each time the reference clock switches a count down counter is loaded with the high byte, and the low byte is added to the current fraction. If the fraction has a carry, an additional fast clock is added to the count down counter.

Claims18

Dependent claims

A computer-implemented method for implementing high frequency clock generation for a simulation comprising the steps of:

defining a programmable oscillator model including an internal ring oscillator for generating a high frequency clock;
programming the internal ring oscillator for the simulation for counting a set number of clocks and for determining when to switch the reference clock;
and
generating the high frequency clock with the programmed internal ring oscillator during the simulation.

1 more element

Dependencies are inferred from the claim text.

Programmable oscillators for high frequency clock generation for simulation environments

Life of this patent

Programmable oscillators for high frequency clock generation for simulation environments

Life of this patent

Abstract

Claims18