摘要:
Methods of enabling functions of a design to be implemented in an integrated circuit device are disclosed. An exemplary method comprises applying test data to a plurality of dice having different element types for implementing circuits, wherein the plurality of dice have a common layout of the different element types for implementing the circuits; receiving output data from the plurality of dice in response to applying the test data to the plurality of dice; analyzing the output data from the plurality of dice; transforming by a computer the output data to characterization data comprising timing data associated with the different element types for implementing circuits, wherein the characterization data comprises data associated with regions of the dice, and storing the characterization data. A computer program product for enabling functions of a design to be implemented in an integrated circuit device is also disclosed.
摘要:
An integrated circuit (“IC”) (100) is configured to have two instantiations of a user design (103, 105). Register values from the first instantiation (RA1, RA2, RA3, RA4) are compared (102) to corresponding registers of the second instantiation (RB1, RB2, RB3, RB4). If a register pair does not match, the user designs are halted, re-loaded, and re-started.
摘要:
In one embodiment of the present invention, a secure cryptographic circuit arrangement is provided. The secure cryptographic circuit includes a cryptographic processing block, a spreading sequence generator, and a delay control circuit. The cryptographic processing block has a plurality of signal paths. One or more of the plurality of signal paths includes respective adjustable delay circuits. The spreading sequence generator is configured to output a sequence of pseudo-random numbers. The delay control circuit has an input coupled to an output of the spreading sequence number generator and one or more outputs coupled to respective delay adjustment inputs of the adjustable delay circuits. The delay control circuit is configured to adjust the adjustable delay circuits based on the pseudo-random numbers.
摘要:
A method of configuring a device having programmable logic is disclosed. The method comprises generating a netlist associated with a circuit design; coupling the netlist to the device having programmable logic; performing a re-targeting function using a circuit on the device having programmable logic; generating configuration bits for configuring the programmable logic; and configuring the programmable logic to implement the circuit design according to the configuration bits based upon the netlist and results of the re-targeting function.
摘要:
Methods and systems are provided for determining a characteristic of an atomic particle affecting a programmable logic device (PLD). The PLD is configured to generate a value at one or more outputs. A source generates a packet of atomic particles. The departure from the source is indicated for the packet of the atomic particles. The PLD is impacted with the packet of the atomic particles. A change is detected in the value of one or more outputs of the PLD. The change in the value of the output or outputs is a result of the impact of the PLD by one of the atomic particles from the packet. A time interval is determined between the departure of the packet of the atomic particles from the source and the change in the value of the output or outputs.
摘要:
A memory cell stores a data bit value despite atomic radiation. The memory cell includes two inverters, an access circuit, and two switch circuits. Each inverter has an input and an output. The access circuit is arranged to write and read the data bit value in the memory cell. The switch circuits cross couple the outputs of the two inverters to the inputs of the two inverters. The switch circuits are arranged to alternately decouple and couple the inputs of the two inverters to limit corruption from atomic radiation of the data bit value in the memory cell.
摘要:
Prediction of a rate of atmospheric upsets in an integrated circuit (IC) is described. In one embodiment, a first rate of atmospheric upsets is measured in a plurality of ICs of a first type. Within a beam of atomic particles, a second rate of beam upsets of at least one IC of the first type and a third rate of beam upsets of at least one IC of a second type are concurrently measured. A fourth rate of atmospheric upsets is determined in an IC of the second type as a function of the first rate of atmospheric upsets and the second and third rates of beam upsets.
摘要:
SEU-hardening series resistances loads are formed within the gate structures of cross-coupled inverters of a latch. For some embodiments, the gate contact for the input of each cross-coupled inverter has a sufficiently high resistance to provide the SEU-hardening series resistance. For other embodiments, a conductive trace layer coupled to the input of each cross-coupled inverter includes a high-resistivity portion that provides the SEU-hardening series resistance.
摘要:
A circuit for implementing a plurality of circuits on a programmable logic device, the circuit comprising a first circuit implemented on a first portion of the programmable logic device; a second circuit implemented on a second portion of the programmable logic device; and a control circuit coupled to the first circuit and the second circuit, the control circuit providing isolation between the first circuit and the second circuit. While the first circuit and the second circuit may comprise redundant circuits implementing a common function, the circuits may also comprise circuits which must be isolated, such as an encryption circuit and a decryption circuit implementing a cryptographic function. A method for implementing a plurality of circuits on a programmable logic device is also disclosed.
摘要:
In an integrated circuit, a layer including a plurality of conductive wires is described. A first wire, having sidewalls, is tapered from a proximal end which has a first width to a distal end which has a second width, to reduce width from the first width to the second width, and the first wire also has a substantially vertical surface. A second wire, spaced apart from the first wire, also has a substantially vertical surface. The first wire and the second wire are each horizontally disposed along side each other forming a part of a sidewall capacitor between facing sidewalls. Capacitors are created between the first substantially vertical surface and the second substantially vertical surface, the capacitors are respectively associated with capacitances and with a plurality of loads, the plurality of loads is progressively reduced responsive to a progressive reduction of the capacitances as associated with the first wire taper.