Abstract Apparatus for computing power consumption in an MOS transistor logic function block include circuit information deriving means for deriving circuit information appropriate for a logic function block of interest based on input and output varying signals to and from said logic function block, load capacitance data, and a net list, slew rate determining means for determining an input slew rate based on information from said circuit information deriving means, a memory section containing expressions for use in computation of power consumption caused by through-current, each expression corresponding to a different one of various types of logic function blocks and representing power consumption caused by through-current as a function of a slew rate and load capacitance, and means for determining power consumption due to through-current by substituting the slew rate as determined by said slew rate determining means and load capacitance data into the computation expression as read from said memory section.
Apparatus for computing power consumption in an MOS transistor logic function block, comprising: circuit information deriving means for deriving circuit information appropriate for a logic function block of interest based on input and output varying signals to and from said logic function block and a net list; slew rate determining means for determining an input slew rate based on information from said circuit information deriving means; a memory section containing expressions for use in computation of power consumption caused by through-current, each expression corresponding to a different one of various types of logic function blocks and representing power consumption caused by through-current as a function of a slew rate; and means for determining power consumption due to through-current by substituting the slew rate as determined by said slew rate determining means into the computation expression as read from said memory section.
Claim 2
Dependent Claim
151 words
Apparatus for computing power consumption in an MOS transistor logic function block, comprising: circuit information deriving means for deriving circuit information appropriate for a logic function block of interest based on input and output varying signals to and from said logic function block, load capacitance data, and a net list; slew rate determining means for determining an input slew rate based on information from said circuit information deriving means; a memory section containing expressions for use in computation of power consumption caused by through-current, each expression corresponding to a different one of various types of logic function blocks and representing power consumption caused by through-current as a function of a slew rate and load capacitance; and means for determining power consumption due to through-current by substituting the slew rate as determined by said slew rate determining means and load capacitance data into the computation expression as read from said memory section.
Claim 3
Dependent Claim
63 words
Apparatus for computing power consumption in an MOS transistor logic function block according to Claim 1, further comprising: means for determining power consumption caused by load capacitance; and means for summing the power consumption as determined by said means for determining power consumption caused by through-current and the power consumption as determined by said means for determining power consumption caused by load capacitance.
Claim 4
Dependent Claim
63 words
Apparatus for computing power consumption in an MOS transistor logic function block according to Claim 2, further comprising: means for determining power consumption caused by load capacitance; and means for summing the power consumption as determined by said means for determining power consumption caused by through-current and the power consumption as determined by said means for determining power consumption caused by load capacitance.
Claim 5
Dependent Claim
50 words
Apparatus for computing power consumption in an MOS transistor logic function block according to Claim 3, further comprising: means for multiplying power consumption in one operation cycle of each logic function block by a number of operating cycles in unit time, and summing the results of respective logic function blocks.
Claim 6
Dependent Claim
50 words
Apparatus for computing power consumption in an MOS transistor logic function block according to Claim 4, further comprising: means for multiplying power consumption in one operation cycle of each logic function block by a number of operating cycles in unit time, and summing the results of respective logic function blocks.
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