Patents Assigned to LSI Logic Corporation
  • Patent number: 6954705
    Abstract: A method of screening defects includes steps of: (a) measuring a quiescent current at a first supply voltage for each of a plurality of devices; (b) measuring a quiescent current at a second supply voltage for each of the plurality of devices; (c) generating a plot of the quiescent current measured at the first supply voltage vs. the quiescent current measured at the second supply voltage for each of the plurality of devices; (d) determining a range of intrinsic variation of quiescent current in the plot; and (e) identifying any of the plurality of devices corresponding to a measurement plotted outside the range of intrinsic variation as defective.
    Type: Grant
    Filed: June 23, 2003
    Date of Patent: October 11, 2005
    Assignee: LSI Logic Corporation
    Inventor: Robert Benware
  • Patent number: 6954082
    Abstract: A method and apparatus for testing an integrated circuit (IC) package includes a printed circuit board (PCB) on which is mounted the IC package and which is removably connected (preferably perpendicular) to a motherboard. The IC package, the PCB and the motherboard are subjected to thermal, humidity and/or electrical test conditions.
    Type: Grant
    Filed: December 4, 2003
    Date of Patent: October 11, 2005
    Assignee: LSI Logic Corporation
    Inventor: Carlo Grillettc
  • Patent number: 6954091
    Abstract: An integrated circuit is provided, which includes a phase-locked loop (PLL) that is fabricated on the integrated circuit and has a selectable loop filter capacitance and a selectable output frequency range.
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: October 11, 2005
    Assignee: LSI Logic Corporation
    Inventor: Steven G. Wurzer
  • Patent number: 6954107
    Abstract: An amplifier for a differential signal drain is able to amplify a signal over a frequency range and boost the signal within a specified frequency range. A resistor is placed between the drain and gate of the first transistor of a cascode amplifier and can be selected to provide additional signal boost at a specified input frequency. An additional input transistor may be added to provide a stepped amplification over the frequency range. The amplifier is further able to reject common mode signals by using regulating transistors.
    Type: Grant
    Filed: December 23, 2004
    Date of Patent: October 11, 2005
    Assignee: LSI Logic Corporation
    Inventor: Kenneth G. Richardson
  • Publication number: 20050223388
    Abstract: A reusable software block is adapted to control multiple instantiations of a peripheral device within a system. A device hardware abstraction layer defines offset values for registers of the peripheral device and a data structure for the peripheral device. A platform hardware abstraction layer defines an address map of the system, and is adapted to initialize each instantiation of the peripheral device via calls to the device hardware abstraction layer.
    Type: Application
    Filed: April 1, 2004
    Publication date: October 6, 2005
    Applicant: LSI Logic Corporation
    Inventors: Judy Gehman, Matthew Kirkwood, Steven Emerson
  • Patent number: 6952452
    Abstract: An apparatus comprising a first circuit and a second circuit. The first circuit may be configured to (i) generate a random number signal, (ii) read a data signal, and (iii) generate one or more control signals. The second circuit may be configured to (i) store the random number signal, (ii) receive and store a decoded video signal, and (iii) present the data signal. The first circuit may be further configured to compare the data signal with the random number signal and (i) when the data signal matches the random number signal generate a first of the control signals and (ii) when the data signal fails to match the random number signal generate a second of the control signals.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: October 4, 2005
    Assignee: LSI Logic Corporation
    Inventors: Brett J. Grandbois, Gareth D. Trevers
  • Patent number: 6951787
    Abstract: A capacitor and a capacitor dielectric material are fabricated by adjusting the amount of an ionic conductive species, such as hydrogen, contained in the capacitor dielectric material to obtain predetermined electrical or functional characteristics. Forming the capacitor dielectric material from silicon, nitrogen and hydrogen allows a stoichiometric ratio control of silicon to nitrogen to limit the amount of hydrogen. Forming the capacitor by dielectric material plasma enhanced chemical vapor deposition (PECVD) allows hydrogen bonds to be broken by ionic bombardment, so that stoichiometric control is achieved by controlling the power of the PECVD. Applying a predetermined number of thermal cycles of temperature elevation and temperature reduction also breaks the hydrogen bonds to control the amount of the hydrogen in the formed capacitor dielectric material.
    Type: Grant
    Filed: March 6, 2003
    Date of Patent: October 4, 2005
    Assignee: LSI Logic Corporation
    Inventors: Derryl D. J. Allman, Nabil Mansour, Ponce Saopraseuth
  • Patent number: 6952789
    Abstract: A mechanism for synchronizing a multiple-circuit system, includes (a) selecting a master circuit from a plurality of circuits, the remaining circuits including at least one slave circuit, (b) receiving, at each of the plurality of circuits, input data and a local clock signal associated with the input data, (d) generating at least one control signal at the master circuit using the local clock signal of the master circuit, (e) outputting the control signal from the master circuit, (f) forwarding the control signal to the slave circuit(s), (g) looping back the control signal to the master circuit, (h) processing the input data at the slave circuit(s) using the forwarded control signal, (i) processing the input data at the master circuit using the looped-back control signal, and (j) outputting the processed data from each of the plurality of circuits.
    Type: Grant
    Filed: September 12, 2001
    Date of Patent: October 4, 2005
    Assignee: LSI Logic Corporation
    Inventors: Syed K. Azim, Venkat Yadavalli, Keven B. Hui
  • Patent number: 6951808
    Abstract: A method for restoring an eroded portion in an exposed upper surface cavity of a metallic element in a microelectronic device, where the metallic element has a hardness, and the metallic element is laterally surrounded by lateral elements, where at least one structure within the lateral elements has a hardness that is greater than the hardness of the metallic element. A precursor material is deposited in at least the cavity of the upper surface of the metallic element. The precursor material is deposited to a thickness that at least fills the cavity of the upper surface of the metallic element. The precursor material has a hardness that is less than the hardness of the at least one structure within the lateral elements. The precursor material is removed as necessary from the lateral elements, and the precursor material is planarized. Only the precursor material within the cavity of the upper surface of the metallic element is selectively replaced with a desired material.
    Type: Grant
    Filed: March 27, 2003
    Date of Patent: October 4, 2005
    Assignee: LSI Logic Corporation
    Inventors: Jayanthi Pallinti, Samuel V. Dunton, Ronald J. Nagahara
  • Patent number: 6950352
    Abstract: A method and apparatus is provided for replacing defective storage cells within a memory device having twisted bit lines. If a defective storage cell is discovered, the row containing that storage cell can be re-mapped to the neighboring row or the memory array. Each successive neighboring row is also re-mapped to succeeding neighboring rows by incrementing or decrementing the row addresses. This will cause the addresses to essentially shift one address value toward the redundant set of rows, and one redundant row will be subsumed for every defective row within the array. Whenever an address is shifted across a twist region, the data of that address is purposely inverted in binary voltage value (i.e., converted from a binary 1 to a binary 0, and vice versa) to accommodate the twisting of the true and complementary bit line locations.
    Type: Grant
    Filed: November 18, 2003
    Date of Patent: September 27, 2005
    Assignee: LSI Logic Corporation
    Inventors: Chang Ho Jung, Jeff S. Brown
  • Patent number: 6951000
    Abstract: A method of generating a simulated voltage contrast image includes steps for receiving as input design information for an integrated circuit die, selecting a net of the integrated circuit from the design information, generating a trace outline of the selected net from the image, analyzing the design information to calculate an interaction between a charged particle beam and the selected net, selecting a shading representative of the calculated interaction, and filling the trace outline of the selected net with the shading to generate the simulated voltage contrast image.
    Type: Grant
    Filed: January 22, 2003
    Date of Patent: September 27, 2005
    Assignee: LSI Logic Corporation
    Inventors: Joseph Cowan, Tracy Myers
  • Patent number: 6951017
    Abstract: A software tool is created to migrate computer files that define ICs from older to newer computer-readable directory structures. The old and new directories are compared to identify differences that are mapped and sorted on the basis of directory source names. A computer file defining an IC is migrated by identifying source names in the file that are referenced by the tool. For each identified source name, the associated directory reference is changed from the old to the new directory structure.
    Type: Grant
    Filed: July 27, 2001
    Date of Patent: September 27, 2005
    Assignee: LSI Logic Corporation
    Inventor: Kenton T. Dalton
  • Patent number: 6949446
    Abstract: Provided is a technique for fabrication of STIs in a semiconductor device using implantation of damaging high-energy ions to insulating material overburden to generally and/or selectively increase insulation overburden removal rates. This technique avoids the use of chemical mechanical planarization (CMP) with a combination of implantation and, in some instances, low cost batch etching. The electrical characteristics of devices created with the new technique match closely to those fabricated with the standard CMP-based technique.
    Type: Grant
    Filed: June 9, 2003
    Date of Patent: September 27, 2005
    Assignee: LSI Logic Corporation
    Inventors: Arvind Kamath, Venkatesh P. Gopinth
  • Patent number: 6948054
    Abstract: A method of conditional branching in a pipelined processor. The method comprising the steps of (A) prefetching a branch target address in response to encountering a branch instruction, in prediction of taking a branch, and (B) evaluating between (i) taking the branch and (ii) not taking the branch substantially contemporaneously with prefetching the branch target address.
    Type: Grant
    Filed: November 29, 2000
    Date of Patent: September 20, 2005
    Assignee: LSI Logic Corporation
    Inventor: Frank Worrell
  • Patent number: 6948114
    Abstract: A method for decoding an encoded signal. A first step generates a plurality of first precision state metrics for a decoder trellis in response to a plurality of first precision branch metrics. A second step generates a plurality of second precision state metrics for a selected subset of the first precision state metrics in response to a plurality of second precision branch metrics. A third step replaces the selected subset of first precision state metrics with the second precision state metrics. A fourth step stores the first precision state metrics and the second precision state metrics.
    Type: Grant
    Filed: April 25, 2002
    Date of Patent: September 20, 2005
    Assignee: LSI Logic Corporation
    Inventors: Miodrag Potkonjak, Seapahn Megerian, Advait Mogre, Dusan Petranovic
  • Patent number: 6948142
    Abstract: A method of protecting a net of an integrated circuit against injected crosstalk delay includes receiving a synthesized signal path structure and a value of maximum allowable injected crosstalk delay for a selected net in the signal path structure. The signal path structure is analyzed to calculate a skew correction and a net ramptime for the selected net. An injected crosstalk delay of the selected net is estimated from a net aggressor. A crosstalk protection scheme is selected for the selected net to minimize chip area of the integrated circuit while ensuring that the injected crosstalk delay of the selected net does not exceed the value of maximum allowable injected crosstalk delay.
    Type: Grant
    Filed: June 2, 2003
    Date of Patent: September 20, 2005
    Assignee: LSI Logic Corporation
    Inventors: Alexander Tetelbaum, Ruben Molina, Jr.
  • Patent number: 6948139
    Abstract: A method for combining states of a state machine employs manipulation of case statements in the RTL code implementing the state machine to allow selectable state combinations without duplication of code so that errors inherent in maintaining duplicate copies of the same RTL code may be eliminated.
    Type: Grant
    Filed: December 19, 2002
    Date of Patent: September 20, 2005
    Assignee: LSI Logic Corporation
    Inventor: Richard L. Solomon
  • Patent number: 6948019
    Abstract: A slave device on a data bus has a register that stores a non-queued split master vector containing bits identifying whether a transaction with corresponding master devices have been split. An input gate is responsive to the status of the slave device and to receipt of a command from a master device when the slave device status is busy to set a bit in the non-queued split master vector identifying that the transaction with the corresponding master device is split. An output gate is responsive to a not busy status of the slave device to output the non-queued split master vector to the arbiter to re-arbitrate use of the data bus among the previously-split non-queued master devices.
    Type: Grant
    Filed: April 30, 2002
    Date of Patent: September 20, 2005
    Assignee: LSI Logic Corporation
    Inventors: Russell B. Stuber, Robert W. Moss, David O. Sluiter
  • Patent number: 6946866
    Abstract: A tester head from a tester is used to mount a probe card. A DUT/load board has a socket which is configured to hold a substrate. Probe pins from the probe card make contact with bump pads on the substrate. Signal wires from the DUT/load board are fed to the tester, and the tester is connected to a DSO with a fast rise time signal head. During testing, a signal is launched using the DSO into a coaxial cable which is connected to the test head. The launched signal and the reflected signal are captured back by the DSO, and then fed into the tester. Using this data, post processing software is used to obtain the interconnect impedance versus time for the device (i.e., package) under test. The method and apparatus can be used in connection with both Flip Chip and Wire bonded products.
    Type: Grant
    Filed: July 15, 2003
    Date of Patent: September 20, 2005
    Assignee: LSI Logic Corporation
    Inventors: Aritharan Thurairajaratnam, Mohan Nagar, Anand Govind, Farshad Ghahghahi
  • Patent number: 6947056
    Abstract: An apparatus generally having a register, an adder circuit and a mask circuit is disclosed. The register may be configured to replace a current value with a new value in response to a clock value. The adder circuit may be configured to generate the new value by adding the current value to a delta value. The mask circuit may be configured to mask at least one value among the delta value, the new value and the clock value in response to a mask value having a plurality of bits.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: September 20, 2005
    Assignee: LSI Logic Corporation
    Inventor: Mark J. Kwong