Netlist cell identification and classification to reduce power consumption
First Claim
1. A computer implemented synthesis method for a programmable system-on-a-chip integrated circuit device, comprising:
- accessing a circuit netlist via the synthesis computer system, the circuit netlist representing a programmable system-on-a-chip integrated circuit design to be realized in physical form; and
modifying a plurality of cells of the circuit netlist by using a netlist cell iterative sorting process, wherein the sorting process functions by;
determining those cells of the circuit netlist that are coupled to a first power domain, wherein the first power domain is configured to remain powered in a standby mode;
determining those cells of the circuit netlist that are coupled to a second power domain, wherein the second power domain is configured to shut down in the standby mode; and
configuring those cells that are coupled to the second power domain to receive power from the second power domain to enable shut down when the integrated circuit device enters standby mode.
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Accused Products
Abstract
In an integrated circuit device, a power circuit for maintaining asserted values on an input output pin of the device when a functional block of the device is placed in a sleep mode. The device includes a power circuit disposed along the periphery of the device, the power circuit configured to maintain power when the device is placed in a low-power mode. A plurality of input output blocks are included in the device and are for receiving external inputs for the integrated circuit device and for providing outputs from the integrated circuit device. The power circuit is coupled to provide power to at least one of the input output blocks to maintain state when the integrated circuit device is in the low-power mode.
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Citations
13 Claims
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1. A computer implemented synthesis method for a programmable system-on-a-chip integrated circuit device, comprising:
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accessing a circuit netlist via the synthesis computer system, the circuit netlist representing a programmable system-on-a-chip integrated circuit design to be realized in physical form; and modifying a plurality of cells of the circuit netlist by using a netlist cell iterative sorting process, wherein the sorting process functions by; determining those cells of the circuit netlist that are coupled to a first power domain, wherein the first power domain is configured to remain powered in a standby mode; determining those cells of the circuit netlist that are coupled to a second power domain, wherein the second power domain is configured to shut down in the standby mode; and configuring those cells that are coupled to the second power domain to receive power from the second power domain to enable shut down when the integrated circuit device enters standby mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A computer-aided design system for producing an integrated circuit netlist for a programmable system-on-a-chip integrated circuit device, the computer aided design system including a processor coupled to a computer readable memory having computer readable code, which when executed by the processor causes the computer-aided design system to:
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examine a circuit netlist, the circuit netlist representing a programmable system-on-a-chip integrated circuit design to be realized in physical form; and modify a plurality of those cells of the circuit netlist by using a netlist cell iterative sorting process, wherein the sorting process functions by; determining those cells of the circuit netlist that are coupled to a first power domain, wherein the first power domain is configured to remain powered in a standby mode to retain selected device state data; determining those cells of the circuit netlist that are coupled to a second power domain, wherein the second power domain is configured to shut down in the standby mode; and configuring those cells that are coupled to the second power domain to receive power from the second power domain to enable shut down when the integrated circuit device enters standby mode, and wherein the shut down reduces cell leakage current. - View Dependent Claims (10, 11, 12, 13)
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Specification