Method and apparatus for utilizing constraints for the routing of a design on a programmable logic device
First Claim
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1. A system designer, comprising:
- a routing unit operable to select routing resources for user specified signals on a target device in response to user specified routing constraints specifying one of a specific wire and a category of wires on the target device and operable to select routing resources for non-user specified signals on the target device without utilizing the user specified routing constraints.
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Abstract
A method for designing a system on a programmable logic device (PLD) is disclosed. Routing resources are selected for a user specified signal on the PLD in response to user specified routing constraints. Routing resources are selected for a non-user specified signal on the PLD without utilizing the user specified routing constraints.
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Citations
21 Claims
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1. A system designer, comprising:
a routing unit operable to select routing resources for user specified signals on a target device in response to user specified routing constraints specifying one of a specific wire and a category of wires on the target device and operable to select routing resources for non-user specified signals on the target device without utilizing the user specified routing constraints. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A system designer unit comprising:
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a system designer interface unit operable to generate a routing constraints file that includes user specified routing constraints for routing a system on a target device; and a routing unit operable to select routing resources for user specified signals on the target device in response to the user specified routing constraints, and operable to select routing resources for non-user specified signals on the target device without utilizing the user specified routing constraints, wherein the routing unit comprises an ordering unit operable to order signals such that the user specified signals subject to the user specified routing constraints are routed before the non-user specified signals not subject to the user specified routing constraint. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A system designer, comprising:
means for selecting routing resources for user specified signals on a target device in response to user specified routing constraints specifying one of a specific wire and a category of wires on the target device and for selecting routing resources for non-user specified signals on the target device without utilizing the user specified routing constraints. - View Dependent Claims (21)
Specification