Abstract: In described examples, an integrated circuit (IC) includes an isolation, an input/output (IO), and a low power mode (LPM) control logic. The isolation includes a level shift with pull-down configured to weakly pull down the voltage of signals that travel through the isolation. The IO includes an input and a physical connector for coupling to a power management IC. The IO provides an asserted-low LPM enable signal to the physical connector in response to the IO input. An output of the LPM control logic is coupled via the isolation to the input of the IO. The LPM control logic provides a high voltage signal to the input of the IO as a default during power on reset (POR) of the IC. The pull-down pulls the LPM enable signal voltage to the asserted low voltage in response to a voltage of the LPM enable signal falling below a threshold.

Abstract: A design approach provided according to an aspect of the present invention consolidates the constraint files of respective modes into consolidated information and performs place-and-route using such consolidated information. The resource requirements may be reduced as result. Another aspect of the present invention provides a programmatic approach to consolidating timing constraint files of different timing modes into consolidated information.

Abstract: A design approach provided according to an aspect of the present invention consolidates the constraint files of respective modes into consolidated information and performs place-and-route using such consolidated information. The resource requirements may be reduced as result. Another aspect of the present invention provides a programmatic approach to consolidating timing constraint files of different timing modes into consolidated information.