METHODS FOR PERFORMING REGISTER RETIMING OPERATIONS INTO SYNCHRONIZATION REGIONS INTERPOSED BETWEEN CIRCUITS ASSOCIATED WITH DIFFERENT CLOCK DOMAINS

摘要

Circuit design computing equipment may perform register retiming operations to improve the performance of a circuit design after having performed placement and routing operations. For example, the circuit design computing equipment may perform register retiming operations that move registers from a first portion of a circuit design that operates in a first clock domain into a synchronization region that separates the first portion of the circuit design from a second portion of the circuit design that operates in a second clock domain that is different than the first clock domain. Performing register retiming operations that move registers into a synchronization region between clock domains may solve the so-called short path—long path problem in which a long path that would benefit from a register retiming operation is coupled in parallel to a short path that has no location to receive a register during the register retiming operation.

主权项

1. A method for operating circuit design computing equipment, comprising:
with the circuit design computing equipment, receiving a circuit design description that includes a synchronization region that couples a first portion of the circuit design description operating in a first clock domain to a second portion of the circuit design description operating in a second clock domain that is different than the first clock domain; and with the circuit design computing equipment, performing a register retiming operation that moves a register from the first portion of the circuit design description into the synchronization region.