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US 2007/0168687 A1Published application
Cycle-accurate real-time clocks and methods to operate the same
AssigneeTexas Instruments Incorporated
InventorCharles Brokish
Life of this patent
Estimating the term…
Abstract
Cycle-accurate real-time clocks and methods to operate the same are disclosed. An example real-time clock comprises a first counter to count cycles of a selectively-operable clock, a multiplexer to select from at least an output signal associated with the first counter or a continuously-operating clock, and a second counter to count cycles of an output signal of the multiplexer.
Claims29
A real-time clock comprising:
- a first counter to count cycles of a selectively-operable clock;
- a multiplexer to select from at least an output signal associated with the first counter or a continuously-operating clock;
- and
- a second counter to count cycles of an output signal of the multiplexer.
1 more element
A method comprising:
- counting cycles of a selectively-operable clock to form a first count;
- counting at least one of cycles of a continuously-operating clock or events in the first count to form a second count;
- and
- combining the first and the second counts to form a single clock output.
1 more element
A method comprising:
- configuring a real-time clock to operate one or more of a selectively-operable clock or a continuously-operating clock;
- and
- accessing an interface of the real-time clock to configure an output of the real-time clock to represent an entire real-time clock output, a first portion of the real-time clock output, a second portion of the real-time clock output, or a value computed from the first and the second portions.
An article of manufacture storing machine readable instructions which, when executed, cause a machine to:
- configure a real-time clock to operate one or more of a selectively-operable clock or a continuously-operating clock;
- and
- access an interface of the real-time clock to configure an output of the real-time clock to represent an entire real-time clock output, a first portion of the real-time clock output, a second portion of the real-time clock output, or a value computed from the first and the second portions.
Dependencies are inferred from the claim text.