Method for specification and integration of reusable IP constraints

• US 20060123370A1
• Filed: 12/05/2005
• Published: 06/08/2006
• Est. Priority Date: 12/08/2004
• Status: Active Grant

• Current Assignee: Optis Wireless Technology, LLC (Brevet Capital)
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Vergara-Escobar, Mario
• Granted Patent: US 7,526,745 B2
• Time in Patent Office: Days
• US Class Current: 716/102
• CPC Class Codes: G06F 2119/12 Timing analysis or timing optimisation
• CPC Class Codes: G06F 30/30 Circuit design
• CPC Class Codes: G06F 30/3312 Timing analysis
• CPC Class Codes: G06F 30/3315 using static timing analysis [STA]

Abstract

A hardware-block constraint specification method includes defining a plurality of hardware-block constraint categories according to at least one of type of constraint and constraint operating mode and defining a plurality of hardware-block constraint commands. Each of the plurality of hardware-block constraint commands is categorized into one of the plurality of hardware-block constraint categories. The method also includes encapsulating the plurality of hardware-block constraint commands within a plurality of modules usable, via an application programming interface, in a stand-alone mode or an integrated mode.

Claims

1. A hardware-block timing-constraint specification method comprising:

defining a plurality of hardware-block timing-constraint categories according to at least one of;

type of timing constraint; and

timing-constraint operating mode;

defining a plurality of hardware-block timing-constraint commands;

wherein each of the plurality of hardware-block timing-constraint commands is categorized into one of the plurality of hardware-block timing-constraint categories; and

encapsulating the plurality of hardware-block timing-constraint commands within a plurality of modules usable, via an application programming interface, in a stand-alone mode or an integrated mode.

2. The method of claim 1, further comprising assembling the plurality of modules into at least one library.

3. The method of claim 1, wherein the type of timing constraint is selected from the group consisting of clock, input/output, timing exception, and environmental functions.

4. The method of claim 1, wherein the timing-constraint operating mode is selected from the group consisting of test timing constraints and functional timing constraints.

5. The method of claim 1, wherein the step of defining a plurality of hardware-block timing-constraint commands comprises use of at least one of data abstraction, polymorphism, and parameterization.

6. The method of claim 1, wherein the step of encapsulating comprises creating a user application programming interface.

7. An integrated-circuit synthesis method comprising:

integrating, via an application programming interface, a plurality of hardware-block timing-constraint modules into an electronic-design-automation environment;

wherein at least one of the plurality of hardware-block timing-constraint modules is usable in a stand-alone mode or an integrated mode; and

performing a timing analysis using the at least one of the plurality of hardware-block timing-constraint modules.

8. The method of claim 7, wherein the step of integrating comprises integrating at least one hardware-block timing-constraint module from each of at least two providers.

9. The method of claim 7, wherein the step of integrating comprises:

performing a standalone static-timing-analysis check; and

checking the hardware-block timing-constraints in an integrated context.

10. An article of manufacture for hardware-block timing-constraint specification, the article of manufacture comprising:

at least one computer readable medium;

processor instructions contained on the at least one computer readable medium, the processor instructions configured to be readable from the at least one computer readable medium by at least one processor and cause the at least one processor to operate as to facilitate;

definition of a plurality of hardware-block timing-constraint categories according to at least one of;

type of timing constraint; and

timing-constraint operating mode;

definition of a plurality of hardware-block timing-constraint commands;

wherein each of the plurality of hardware-block timing-constraint commands is categorized into one of the plurality of hardware-block timing-constraint categories;

encapsulation of the plurality of hardware-block timing-constraint commands within a plurality of modules usable, via an application programming interface, in a stand-alone mode or an integrated mode.

11. The article of manufacture of claim 10, further comprising processor instructions configured to cause the at least one processor to operate as to facilitate assembling of the plurality of modules into at least one library.

12. The article of manufacture of claim 10, wherein the timing-constraint function is selected from the group consisting of clock, input/output, timing exception, and environmental functions.

13. The article of manufacture of claim 10, wherein the timing-constraint operating mode is selected from the group consisting of test timing constraints and functional timing constraints.

14. The article of manufacture of claim 10, wherein the definition of the plurality of hardware-block timing-constraint commands comprises use of at least one of data abstraction, polymorphism, and parameterization.

15. The article of manufacture of claim 10, wherein the encapsulation comprises creation of a user application programming interface.

16. A hardware-block synthesis-constraint specification method comprising:

defining a plurality of hardware-block synthesis-constraint categories, the hardware-block synthesis-constraint categories being defined according to at least one of;

type of constraint; and

constraint operating mode;

defining a plurality of hardware-block synthesis-constraint commands;

wherein each of the plurality of hardware-block synthesis-constraint commands is categorized into one of the plurality of hardware-block synthesis-constraint categories;

encapsulating the plurality of hardware-block synthesis-constraint commands within a plurality of modules usable, via an application programming interface, in a stand-alone mode or an integrated mode.

17. The method of claim 16, wherein the type of constraint is selected from the group consisting of test, power, and physical constraint.

18. The method of claim 16, wherein the constraint operating mode is selected from a group consisting of a plurality of power modes comprising a standby mode.

19. The method of claim 18, wherein each of the plurality of power modes is dependent upon operating frequency and supply voltage.

20. An article of manufacture for integrated-circuit timing analysis, the article of manufacture comprising:

at least one computer readable medium;

processor instructions contained on the at least one computer readable medium, the processor instructions configured to be readable from the at least one computer readable medium by at least one processor and thereby cause the at least one processor to operate as to facilitate;

integration, via an application programming interface, of a plurality of hardware-block timing-constraint modules into an electronic-design-automation environment;

wherein at least one of the plurality of hardware-block timing-constraint modules is usable in a stand-alone mode or an integrated mode; and

performance of a timing analysis using the at least one of the plurality of hardware-block timing-constraint modules.

21. The article of manufacture of claim 20, wherein the integration comprises integration of at least one hardware-block timing-constraint module from each of at least two providers.

22. The article of manufacture of claim 20, wherein the integration comprises:

performance of a standalone static-timing-analysis check; and

a check of the hardware-block timing-constraints in an integrated context.

23. An integrated-circuit synthesis method comprising:

integrating, via an application programming interface, a plurality of hardware-block synthesis-constraint modules into an electronic-design-automation environment;

wherein at least one of the plurality of hardware-block synthesis-constraint modules is usable in a stand-alone mode or an integrated mode; and

performing a synthesis using the at least one of the plurality of hardware-block synthesis-constraint modules.

24. The method of claim 23, wherein the step of integrating comprises integrating at least one hardware-block synthesis-constraint module from each of at least two providers.

25. The method of claim 23, wherein hardware-block synthesis constraints of the plurality of hardware-block synthesis-constraint modules comprise at least one of hardware-block timing constraints and hardware-block synthesis constraints.

26. An article of manufacture for integrated-circuit synthesis, the article of manufacture comprising:

at least one computer readable medium;

processor instructions contained on the at least one computer readable medium, the processor instructions configured to be readable from the at least one computer readable medium by at least one processor and thereby cause the at least one processor to operate as to facilitate;

integration, via an application programming interface, of a plurality of hardware-block synthesis-constraint modules into an electronic-design-automation environment;

wherein at least one of the plurality of hardware-block synthesis-constraint modules is usable in a stand-alone mode or an integrated mode; and

performance of a synthesis using the at least one of the plurality of hardware-block synthesis-constraint modules.

27. The article of manufacture of claim 26, wherein the integration comprises integration of at least one hardware-block synthesis-constraint module from each of at least two providers.

28. The article of manufacture of claim 26, wherein hardware-block synthesis constraints of the plurality of hardware-block synthesis-constraint modules comprise at least one of hardware-block timing constraints and hardware-block synthesis constraints.

29. An article of manufacture for hardware-block synthesis-constraint specification, the article of manufacture comprising:

at least one computer readable medium;

processor instructions contained on the at least one computer readable medium, the processor instructions configured to be readable from the at least one computer readable medium by at least one processor and cause the at least one processor to operate as to facilitate;

definition of a plurality of hardware-block synthesis-constraint categories, the hardware-block synthesis-constraint categories being defined according to at least one of;

type of constraint; and

constraint operating mode;

definition of a plurality of hardware-block synthesis-constraint commands;

wherein each of the plurality of hardware-block synthesis-constraint commands is categorized into one of the plurality of hardware-block synthesis-constraint categories; and

encapsulation of the plurality of hardware-block synthesis-constraint commands within a plurality of modules usable, via an application programming interface, in a stand-alone mode or an integrated mode.

30. The article of manufacture of claim 29, wherein the type of constraint is selected from the group consisting of test, power, and physical constraint.

31. The article of manufacture of claim 29, wherein the constraint operating mode is selected from a group consisting of a plurality of power modes comprising a standby mode.

32. The article of manufacture of claim 31, wherein each of the plurality of power modes is dependent upon operating frequency and supply voltage.

33. A hardware-block constraint-specification method comprising:

defining a plurality of hardware-block constraint categories according to at least one of;

type of constraint; and

constraint operating mode;

defining a plurality of hardware-block constraint commands;

wherein each of the plurality of hardware-block constraint commands is categorized into one of the plurality of hardware-block constraint categories; and

encapsulating the plurality of hardware-block constraint commands within a plurality of modules usable, via an application programming interface, in a stand-alone mode or an integrated mode.

34. An article of manufacture for hardware-block constraint specification, the article of manufacture comprising:

at least one computer readable medium;

processor instructions contained on the at least one computer readable medium, the processor instructions configured to be readable from the at least one computer readable medium by at least one processor and cause the at least one processor to operate as to facilitate;

definition of a plurality of hardware-block constraint categories according to at least one of;

type of constraint; and

constraint operating mode;

definition of a plurality of hardware-block constraint commands;

wherein each of the plurality of hardware-block constraint commands is categorized into one of the plurality of hardware-block constraint categories;

encapsulation of the plurality of hardware-block constraint commands within a plurality of modules usable, via an application programming interface, in a stand-alone mode or an integrated mode.