摘要:
Disclosed is a simulation model which facilitates the "real-time" simulation of application specific integrated circuits (ASICs) in the actual digital computer system in which they will be incorporated. Significantly, this invention permits the emulation of an ASIC device, and thus does not require the fabrication of an actual physical specimen of that device. Instead, this invention permits the use of a software model which facilitates debugging of the ASIC device and permits effective generation of system test vectors. Such an approach facilitates the system-level testing of ASIC devices prior to fabrication, by permitting both the generation of system test vectors and the debugging of the internal behavior of such ASIC devices without limiting the flexibility, with respect to other devices in the system, of either simulating such devices in software or utilizing actual physical specimens of such devices.
摘要:
A bus interface system for communicating between a master bus interface and a plurality of slave bus interfaces includes a plurality of lines extending between the master unit and each of the slave units, the lines including a clock line containing clock signals, a gated clock line containing gated clock signals having a frequency which is a submultiple of the frequency of the clock signals, a data line, a command register line, an active line, and circuitry for exchanging data between the master unit and one of the slave units on the data line under the control of the other lines.
摘要:
The present invention provides an integrated circuit (IC). In one embodiment, the IC includes a substrate and a plurality of gate array blocks located on the substrate. Each of the blocks includes a programmable gate array (PGA) containing at least a portion of a circuit design in an interconnect layer thereof, and a field-programmable gate array (FPGA) coupled to the PGA and capable of containing a configuration that augments the portion of the circuit design. In this embodiment, the PGA and the FPGA cooperate to effect the circuit design. In another aspect, the present invention provides a method of designing an IC. In yet another aspect, the present invention provides a method of manufacturing ICs.
摘要:
A system for designing an integrated circuit with multiple functions is disclosed. The system creates a set of files defining a structure for a plurality of functions existing within one integrated circuit. Floorplanning modifications are then permissible within any functional block, as well as from one functional block to another since the files for each integrated circuit chip are reconfigureable upon modification. The subject invention also provides for floorplanning modifications involving multiple integrated circuit chips wherein any one functional block may be moved from one integrated circuit chip to another to achieve better optimization with less restrictions.
摘要:
An integrated circuit including embedded test functionality. An integrated circuit may include a plurality of processor cores each configured to execute instructions, and a test access port configured to interface circuits included within the integrated circuit with a test environment external to the integrated circuit for testing of the circuits. The test access port may include virtualization logic configured to allow a first set of instructions executing on the given processor core to control activity of the test access port for testing of the circuits. In one embodiment, the circuits may be accessible for testing via a plurality of scan chains, wherein the scan chains and the test access port are compliant with a version of Joint Test Access Group (JTAG) standard IEEE 1149, and wherein the test access port includes a Test Data In (TDI) pin, a Test Data Out (TDO) pin, and a Test Clock (TCK) pin.
摘要:
A method implements a change to a circuit design for a system formed on a semiconductor chip, the circuit design including at least one circuit core. The method includes providing in the circuit design at least one field programmable gate array (FPGA) core, extracting an incremental change to the circuit design by comparing a new resister-transfer-level (RTL) design and an old RTL design for the system, synthesizing the incremental change into a netlist for the at least one FPGA core, generating new metal layer interconnections so as to provide an input and an output for the at least one FPGA core in accordance with the incremental change, and programming the at least one FPGA core in accordance with the netlist. The at least one FPGA core is provided in an otherwise unused area of the chip.
摘要:
A system for interactive design, synthesis and simulation of an electronic system allowing a user to design a system either by specification of a behavioral model in a high level language such as VHDL or by graphical entry. The user can view full or partial simulation and design results simultaneously, on a single display window. The synthesis process uses a systematic technique to map and enforce consistency of the semantics imbedded in the intent of the original, high-level descriptions. The design activity is generally a series of transformations operating upon various levels of design representations. At each level, the design can be simulated and reviewed in schematic diagram form. The simulation results can be displayed immediately adjacent to signal lines on the diagram to which they correspond. In one embodiment, design rule violations are processed by an expert system to suggest possible corrections or alterations to the design which will eliminate the design rule violations. Schematic diagram and simulation displays showing those portions of the electronic system and simulated signal patterns which are related to the design rule violations are used to help the user identify and appropriately correct problems in the design.
摘要:
A settop box system for capturing and controlling live and recorded audio and video content. The system records digital and analog data from video and audio content, such as in a home entertainment center. The system records data from the content as specified and the data may be sequenced into clips that can be searched and indexed. A user may create comparison programs that allow searches of either pre-recorded or incoming content to be performed. In addition, the program allows editing of recorded programs, such as filtering of audio content or overlaying a video program with a different audio background. Multiple audio and video feeds may be handled simultaneously and the program's functions may be executed without viewing of the content being manipulated. The recorded content may also be indexed and even clips of the content may be indexed.
摘要:
An apparatus and method for using the apparatus for reducing analysis time of integrated circuits. The apparatus includes an integrated logic analyzer inserted in a substrate containing the integrated circuit and means for accelerating circuit analysis using the integrated logic analyzer. The means may be selected from the group consisting of a high speed sampling circuit coupled to the integrated logic analyzer and an on-board circuit testing and analysis apparatus including the integrated logic analyzer. Use of the apparatus enables lower production costs by speeding up circuit analysis as well as providing analysis of high speed circuits in a cost effective manner.
摘要:
A tool and method for increasing fault coverage of an integrated circuit. The tool includes a key nodes detection device for matching key nodes to a fault grading report list of undetected nodes, a multi-sites selection device for reading a layout file of available multi unit sites for the integrated circuit, a site matching device for matching available multi-unit sites to key undetected nodes, and a netlist generation device for building logic functions in the available multi-unit sites for connection to the key undetected nodes. Use of the invention enables increased fault coverage of integrated circuit circuits for little or no added expense.