Apparatus and Method for Generating a Variable-Frequency Clock
AssigneeVIA Technologies, Inc.
InventorsKevin Lin, Alex Chang
Life of this patent
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Abstract
Apparatus and method for generating a variable-frequency clock is disclosed. A control state machine defines various commands and generates corresponding control signals. A variable-frequency clock generator then outputs the variable-frequency clock that has a specific pattern corresponding with the respective command, where the variable-frequency clock is constructed with a first clock and a second clock having a frequency different from the first clock. A control signals generator accordingly outputs the control signals that are also constructed with the first clock and the second clock.
Claims20
A method for generating a variable-frequency clock, comprising:
- defining a plurality of commands and generating corresponding control signals;
- outputting the variable-frequency clock which is constructed with a first clock and a second clock having a frequency different from the first clock, said variable-frequency clock having a specific pattern corresponding with the respective command;
- and
- outputting the control signals which are constructed with the first clock and the second clock.
Apparatus for generating a variable-frequency clock and control signals to an SDRAM, comprising:
- a control state machine, which defines a plurality of commands and generating corresponding control signals;
- a variable-frequency clock generator, which outputs the variable-frequency clock that is constructed with a first clock and a second clock having a frequency different from the first clock, said variable-frequency clock having a specific pattern corresponding with the respective command;
- and
- a control signals generator, which outputs the control signals that are constructed with the first clock and the second clock.
A method for generating a variable-frequency clock and control signals to an SDRAM, comprising:
- outputting the variable-frequency clock and the control signals correspondingly with a plurality of commands, wherein said variable-frequency clock and the control signals are constructed with a first clock and a second clock having a frequency different from the first clock.
Dependencies are inferred from the claim text.