Timing operations in an IC with configurable circuits

摘要

Some embodiments provide a method that identifies a first physical design solution for positioning several configurable operations on several reconfigurable circuits of an integrated circuit (IC). The method identifies a second physical design solution for positioning the configurable operations on the configurable circuits. One of the identified physical design solutions has one reconfigurable circuit perform a particular configurable operation in at least two reconfiguration cycles while the other identified solution does not have one reconfigurable circuit perform the particular configurable operation in two reconfiguration cycles. The method costs the first and second physical design solutions. The method selects one of the two physical design solutions based on the costs.

主权项

1. An integrated circuit (IC) comprising:
a first logic circuit; a second logic circuit; and a storage circuit connecting an output of the first logic circuit and an input of the second configurable logic circuit, wherein:
at a first clock cycle, the storage circuit is open to allow a particular signal to propagate from the output of the first logic circuit to the input of the second logic circuit for performing a particular logic operation; andat a second clock cycle, the storage circuit is closed to hold the particular signal to allow the second logic circuit to continue to perform said particular logic operation.