Xilinx, Inc.

Chen Wei Tseng

Weiguang Lu

Carl H Carmichael

Gregory J Miller

Matthew H Klein

Karthy Rajasekharan

William W Stiehl

Carl M Stern

Robert M Balzli, Jr

Restu I Ismail

Matthew Pond Baker

Paige A Kolze

Derrick S Woods

Aditya Chaubal

Christopher Y Karman

Robert Le

An apparatus relating generally to an error detection system is disclosed. The apparatus includes a first data bus and a second data bus. A first circuit is coupled for communication via the first data bus. A plurality of storage elements are coupled to the first data bus and the second data bus. A second circuit is coupled for communication via the second data bus. The error detection system is coupled to the first data bus and the second data bus. The error detection system is coupled to compare first data on the first data bus with corresponding second data on the second data bus. The error detection system is configured to generate an error signal responsive to mismatch between the first data and the second data.

Circuit network with an error detection system for mitigation of error propagation

A method, non-transitory computer readable medium, and apparatus for performing fault injection and verification on an integrated circuit are disclosed. For example, the method generates a mask file for one or more modules of a hierarchical design, wherein the mask file identifies one or more essential bits, receives a selection of one of the one or more modules as a selected module for the fault injection and the verification to be applied, performs the fault injection on at least one essential bit of the selected module based upon the mask file for the selected module, and performs the verification on the selected module.

Method and apparatus for fault injection and verification on an integrated circuit

Methods and circuits are disclosed for backing up the value of a bi-stable circuit included in a set of programmable logic circuits of a programmable IC. The programmable logic circuits are configured to implement logic circuits having functions based on data values stored in a used portion of a plurality of configuration memory cells. The programmable IC includes a backup control circuit configured to back up and restore the value of the bi-stable circuit. In response to a first signal, a first data value stored by the bi-stable circuit is retrieved and stored in a first one of the plurality of configuration memory cells that is unused in implementing the logic circuits. In response to a second signal, the first data value is retrieved from the first one of the plurality of configuration memory cells and stored in the bi-stable circuit.

Single event upset mitigation

Approaches for partially reconfiguring a frame are disclosed. In one approach, a circuit arrangement includes programmable resources, frames of configuration memory cells, and partial configuration control memory cells. Each frame includes a plurality of subsets of configuration memory cells, and each subset configures one of the programmable resources. Each partial configuration control memory cell is coupled to a respective one of the subsets. Responsive to a first partial bitstream that includes a quantity of configuration data for all the subsets of configuration cells of a first frame of the plurality of frames, each subset of the configuration memory cells of the first frame is configurable or not configurable responsive to the state of the associated partial configuration control memory cell.

Partially programming an integrated circuit using control memory cells

Approaches for mitigating single event upsets (SEUs) in a circuit arrangement. In response to each bit error of a plurality of bit errors, an error address indicative of the bit error in a configuration memory cell in the circuit arrangement is translated into a non-volatile memory address. A partial bitstream at the non-volatile memory address is read from a non-volatile memory. Successive partial bitstreams read in response to successive ones of the bit errors are alternately transmitted to first and second internal configuration ports. A subset of configuration memory cells of the circuit arrangement, including the configuration memory cell referenced by the error address, is reconfigured with the partial bitstream.

Bit error mitigation

A method, non-transitory computer readable medium, and apparatus for performing single event upset detection and correction are disclosed. For example, the method comprises: setting, by a processor, at least one starting address for each of a plurality of rows of a design for an integrated circuit, setting, by the processor, at least one ending address for each of the plurality of rows of the design, and performing, by the processor, the single event upset detection and correction scan in parallel, from the at least one starting address for each of the plurality of rows to the at least one ending address for each of the plurality of rows.

Method and apparatus for single event upset (SEU) detection and correction

When a first sub-circuit of a programmable integrated circuit ('IC') is to be deactivated, a global write enable (GWE) signal is deasserted. In response to deassertion of the GWE signal and a first memory cell associated with the first sub-circuit being in a first state, flip-flops in the first sub-circuit are disabled from changing state. In response to memory cells associated with sub-circuits other than the first sub-circuit being in a second state, flip-flops in the other sub-circuits are enabled to change state. When the first sub-circuit is to be activated, the GWE signal is asserted. Logic implemented by the first sub-circuit is preserved between the deasserting and the asserting of the GWE signal. In response to assertion of the GWE signal and the first memory cell associated with the first sub-circuit being in the first state, flip-flops in the first sub-circuit are enabled to change state.

Power control using global control signal to selected circuitry in a programmable integrated circuit

Method and apparatus for self-checking and self-correcting memory states of a programmable resource is described. Programmable resource of an integrated circuit has a first core and a second core instantiated therein. A first internal configuration port and a second internal configuration port of the integrated circuit are respectively connected to the first core and the second core. The second core is coupled to the first core for monitoring operation of the first core with the second core, and the second core is configured to obtain control responsive to a failure of the first core or the first internal configuration port for a self-correcting mode.

Self-checking and self-correcting internal configuration port circuitry

A circuit for handling single event upsets includes a plurality of digital clock manager circuits. A plurality of counters are respectively coupled by their inputs to the outputs of the digital clock managers and a reset controller is coupled to the outputs of the counters. The reset controller is configured to determine an expected value of the counters. In response to an output value of one of the counters being less than the expected value, the reset controller triggers a reset of the digital clock manager coupled to the input of the one of the counters. In response to an output value of one of the counters being greater than or equal to the expected value, the reset controller continues operation without triggering a reset of a digital clock manager.

Various approaches for generating an implementation of an electronic circuit design are disclosed. In one approach, a software portion of the design is compiled into software that is executable by a hard processor disposed on a single semiconductor chip with resources of an programmable logic device (PLD). A first synthesized version of a hardware portion of the design is generated for the PLD. A synthesized memory scrubber having an empty block for an address counter is generated, as well as a triple modular redundant (TMR) address counter. The memory in the first synthesized version of the hardware portion of the design is replaced with the memory scrubber, and a complete set of netlists is generated, including a TMR hardware portion of the design and a single instance of the synthesized memory scrubber. A configuration bitstream is generated from the complete set of netlists and stored for later use.

Implementing a user design in a programmable logic device with single event upset mitigation

A configuration management system is disclosed. For example, an embodiment of the present invention provides a configuration management system comprising a configuration storage device containing configuration data, and an integrated circuit, coupled to the configuration storage device, where the integrated circuit comprising at least one configuration management controller for managing a configuration of the integrated circuit in accordance with the configuration data, where the integrated circuit is deployed in a radiation tolerant device.

Method and apparatus for configuring an integrated circuit

A configuration management system is disclosed. For example, an embodiment of the present invention provides a configuration management system comprising at least one configuration storage device containing configuration data, and a plurality of integrated circuits, coupled to said at least one configuration storage device, where the plurality of integrated circuits are coupled in a loop, where each of the plurality of integrated circuits comprising at least one configuration management controller for managing a configuration of another integrated circuit in the loop in accordance with the configuration data, where the plurality of integrated circuits is deployed in at least one radiation tolerant device.

A method of configuring an integrated circuit having programmable logic including the steps of generating a configuration bitstream in accordance with a configuration setup, storing the configuration bitstream into a portion of a memory, configuring the programmable logic of the integrated circuit with a first configuration portion of the configuration bitstream of the memory, monitoring the integrated circuit for at least one configuration error generated in response to an event upset, reconfiguring at least a portion of the programmable logic of the integrated circuit with a second configuration portion of the configuration bitstream in response to the at least one configuration error generated. The integrated circuit may operate normally during the process of reconfiguring the at least a portion of the programmable logic.

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Longmont, CO, United States of America

Chen Wei Tseng