Patents Assigned to LSI
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Patent number: 6567022Abstract: A method and apparatus are provided for calibrating first and second analog-to-digital converters (ADCs). The apparatus applies a test signal to the first and second ADCs. A first correction value is applied to an output of the first ADC to produce a first corrected output. A second correction value is applied to an output of the second ADC to produce a second corrected output. The first and second corrected outputs are then compared to identify a greater one and a lesser one of the first and second corrected outputs. At least one of the first and second correction values are adjusted relative to the other until the first or second corrected output that was identified as the lesser one exceeds the other.Type: GrantFiled: August 12, 2002Date of Patent: May 20, 2003Assignee: LSI CorporationInventors: David R. Reuveni, Stefan G. Block
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Patent number: 6566951Abstract: A variable gain amplifier includes a differential transconductor, a differential gain stage, a DC compensation circuit and first and second load resistors. The differential transconductor has first and second differential voltage signal inputs and first and second differential current outputs. The differential gain stage selectively steers current from the first and second differential current outputs to first and second variable current outputs, respectively, and to first and second compensation current outputs, respectively, based on a differential gain control input. The first and second load resistors are coupled to the first and second variable current outputs, respectively. The DC compensation circuit combines current in the first and second compensation current outputs to form a DC compensation current and couples the DC compensation current to the first and second load resistors.Type: GrantFiled: October 25, 2001Date of Patent: May 20, 2003Assignee: LSI Logic CorporationInventors: Brian E. Merrigan, Asad Ali
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Patent number: 6567390Abstract: A message that has its energy spread over a frame of encoded data is decoded. First, encoded data are received so as to obtain a quantity of the encoded data that is less than all the encoded data in the frame and also is less than all the encoded data representing the message. Then, the quantity of encoded data received is supplemented, without receiving additional encoded data, so as to obtain a frame of data. Typically, the data will be supplemented by zero padding the data, such as by initializing a frame buffer to all zeros and then overwriting the zero data with actual data as it is received. Finally, ordinary frame decoding is performed on the frame of data so generated, in order to decode the message.Type: GrantFiled: March 29, 1999Date of Patent: May 20, 2003Assignee: LSI Logic CorporationInventors: Brian C. Banister, Roland R. Rick
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Patent number: 6566262Abstract: Embodiments of the invention include a capping layer of alloy material formed over a copper-containing layer, the alloy configured to prevent diffusion of copper through the capping layer. In another embodiment the alloy capping layer is self-aligned to the underlying conducting layer. Specific embodiments include capping layers formed of alloys of copper with materials including but not limited to calcium, strontium, barium, and other alkaline earth metals, as well as materials from other groups, for example, cadmium or selenium. The invention also includes methods for forming an alloy capping layer on a copper-containing conducting structure. One such method includes providing a substrate having formed thereon electrically conducting layer comprised of a copper-containing material and forming an alloy capping layer on the electrically conducting layer. In another method embodiment, forming the alloy capping layer includes forming a self-aligned capping layer over the conducting layer.Type: GrantFiled: November 1, 2001Date of Patent: May 20, 2003Assignee: LSI Logic CorporationInventors: Paul Rissman, Richard Schinella, Sheldon Aronowitz, Vladimir Zubkov
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Patent number: 6567889Abstract: A portion of a storage controller's cache memory is used as a virtual solid state disk storage device to improve overall storage subsystem performance. In a first embodiment, the virtual solid state disk storage device is a single virtual disk drive for storing controller based information. In the first embodiment, the virtual solid state disk is reserved for use by the controller. In a second embodiment, a hybrid virtual LUN is configured as one or more virtual solid state disks in conjunction with one or more physical disks and managed using RAID levels 1-6. Since the hybrid virtual LUN is in the cache memory of the controller, data access times are reduced and throughput is increased by reduction of the RAID write penalty. The hybrid virtual LUN provides write performance that is typical of RAID 0. In a third embodiment, a high-speed virtual LUN is configured as a plurality of virtual solid state disks and managed as an entire virtual RAID LUN.Type: GrantFiled: December 19, 1997Date of Patent: May 20, 2003Assignee: LSI Logic CorporationInventors: Rodney A. DeKoning, Gerald J. Fredin, Donald R. Humlicek
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Patent number: 6566730Abstract: A severable horizontal portion of a fuse link is formed relative to a vertically configured structure in an IC to promote separation of the severable portion upon applying energy from a laser beam. The vertically configured structure may be a reduced vertical thickness of the severable portion, an elevated lower surface of the severable portion above adjoining portions of the fuse link, a protrusion which supports the severable portion at a height greater than a height of the adjoining portions of the fuse link, flowing the melted severable portion down sloped surfaces away from a break point, and a propellent material beneath the severable portion which explodes to ablate the severable portion.Type: GrantFiled: November 27, 2000Date of Patent: May 20, 2003Assignee: LSI Logic CorporationInventors: Gary K. Giust, Ruggero Castagnetti, Yauh-Ching Liu, Shiva Ramesh
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Patent number: 6567325Abstract: An integrated circuit having functional logic that provides system access to test access port controlled built-in-self-test logic is provided. The integrated circuit includes a test access port controller having an enable output and a status input. A built-in-self-test controller having an enable input, a status output, one or more random access memory cell controller outputs and one or more random access memory cell inputs is also provided. A functional logic interface is connected to the functional logic, the test access port controller enable output, and the built-in-self-test controller enable input, and allows a built-in self-testing sequence to be initiated from the test access port controller or the system.Type: GrantFiled: April 9, 2001Date of Patent: May 20, 2003Assignee: LSI Logic CorporationInventor: Michael A. Hergott
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Patent number: 6566167Abstract: A method for fabricating a semiconductor package having a 2-layer substrate, which includes an array of solder balls, is disclosed. The method includes patterning signal traces on a top layer of the substrate and identifying groups of signal traces to isolate. According to the present invention, a grounded isolation trace is then patterned adjacent to one of the groups of traces to isolate the signal traces, thereby providing noise shielding. In a preferred embodiment, the grounded isolation trace is provided with multiple vias, rather than only one. In a further aspect of the present invention a row of solder balls is connected together and to ground to create a bottom-layer isolating ground trace to further reduce noise. The bottom-layer isolating ground trace may be connected to the top-layer isolating ground trace using a via.Type: GrantFiled: July 31, 2001Date of Patent: May 20, 2003Assignee: LSI Logic CorporationInventors: Wee K. Liew, Aritharan Thurairajaratnam, Nadeem Haque
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Patent number: 6566244Abstract: A process for selectively reinforcing portions of a low k dielectric material which comprises first forming a low k dielectric layer, then forming openings in the low k layer in portions of the low k layer needing reinforcement, and then filling the openings with reinforcing material, preferably reinforcing material having a higher Young's modulus of elasticity than the low k dielectric material. Such selective reinforcement of certain portions of low k dielectric material may comprise selectively reinforcing the low k dielectric material beneath the bonding pads, with reinforcing material. The low k dielectric material may be reinforced by openings in the low k dielectric material formed beneath portions of the low k dielectric layer where a capping layer will be formed over the low k dielectric material. Subsequent formation of the capping layer will simultaneously fill the openings with capping material, which may then also function as reinforcement material in the openings.Type: GrantFiled: May 3, 2002Date of Patent: May 20, 2003Assignee: LSI Logic CorporationInventors: Charles E. May, Venkatesh P. Gopinath, Peter J. Wright
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Patent number: 6567314Abstract: In the present invention a new method and circuit is disclosed to handle write data during CHE programming for a nonvolatile memory cell including cells created with MONOS technology. A plurality of bit lines are precharged to program inhibit all memory cells coupled to the bit lines. Then a selective bit line is discharged to program the selected memory cell. The number of bit lines selected to be precharged can be reduced to the bit line to be programmed to save power, and precharging a bit line can be done simultaneous with applying program data to a bit line to reduce the number of times a bit line is charged. The number of data latches may be reduced to the actual program data width, resulting in significant area savings and circuit simplification.Type: GrantFiled: December 4, 2001Date of Patent: May 20, 2003Assignee: Halo Lsi, Inc.Inventors: Tomoko Ogura, Seiki Ogura
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Patent number: 6566939Abstract: An apparatus and method for filtering glitches in data signals are provided. The apparatus and method provide a programmable glitch filter that may be programmed to filter glitches of different depths. The apparatus and method further provide a glitch filter that is programmable and incorporates a synchronizer for synchronizing the filtered output from the glitch filter to a different clock domain than that of the clock input.Type: GrantFiled: August 6, 2001Date of Patent: May 20, 2003Assignee: LSI Logic CorporationInventors: David M. Berka, Travis A. Bradfield, Tracy R. Spitler
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Patent number: 6566186Abstract: 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: GrantFiled: May 17, 2000Date of Patent: May 20, 2003Assignee: LSI Logic CorporationInventors: Derryl D. J. Allman, Nabil Mansour, Ponce Saopraseuth
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Patent number: 6561676Abstract: A luminaire assembly includes a ballast housing, a wiring box mounted on an upper end of the ballast housing, and an optical assembly mounted on a lower end of the ballast housing. The ballast housing preferably includes a pair of identically configured ballast housing members that are integrally formed from sheet metal and folded by hand prior to final assembly of the ballast housing. The wiring box includes bent tabs that pivotally support the ballast housing between operative and inoperative positions to simplify installation of the luminaire assembly at a site. A hook and rotatable connector are provided to support the wiring box from a luminaire support member. An optional spacer box is provided to space the ballast housing from the wiring box as may be required in certain high wattage applications. The optical assembly is supported below the ballast housing by a pair of support arms that depend from the ballast housing and releasably engage with the optical assembly.Type: GrantFiled: November 16, 2000Date of Patent: May 13, 2003Assignee: LSI Industries Inc.Inventors: Jerry F. Fischer, John Boyer
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Patent number: 6562735Abstract: Control of a reaction between a peroxide oxidizing agent and a carbon-substituted silane to form a low k carbon-containing silicon oxide dielectric material is achieved, in a first embodiment, by adding, to the carbon-substituted silane reactant, silane (SiH4), to accelerate the process for forming a low k carbon-containing silicon oxide dielectric material by reaction of the carbon-substituted silane/silane mixture with hydrogen peroxide. Also, control of a reaction between a peroxide oxidizing agent and a carbon-substituted silane to form a low k carbon-containing silicon oxide dielectric material is achieved by controlling the ratio of the flow of the hydrogen peroxide reactant and the flow of the reactant mixture of carbon-substituted silane and unsubstituted silane into the reaction chamber though structural modification of the faceplate (showerhead) through which the reactants flow into the chamber.Type: GrantFiled: December 11, 2001Date of Patent: May 13, 2003Assignee: LSI Logic CorporationInventors: Derryl D. J. Allman, Ponce Saopraseuth
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Patent number: 6563889Abstract: A system and method are disclosed for equalizing a read signal from a data storage media is disclosed. An analog output signal is equalized by reading the data storage media using an analog equalization filter. The analog output of the analog equalization filter is converted to a raw digital output signal. The raw digital output signal is processed to detect and correct an error in the raw digital output signal. The error is detected and an adjustment is made to the boost of the analog equalization filter according to the error detected.Type: GrantFiled: October 1, 1998Date of Patent: May 13, 2003Assignee: LSI Logic CorporationInventors: Shih-Ming Shih, Tzu-wang Pan, Richard A. Contreras
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Patent number: 6563198Abstract: The present invention is directed to the present invention is directed to an adhesive pad with electromagnetic compatibility (EMC) characteristics. An adhesive pad suitable for bonding electrical components may include a thermal bonding adhesive material and a lattice interlayer. The adhesive material is suitable for being disposed between the first electrical component and the second component, the thermal bonding adhesive bonding the first electrical component to the second component. The lattice interlayer is included within said thermal bonding adhesive material, the lattice interlayer having electromagnetic capability (EMC) shielding characteristics.Type: GrantFiled: August 17, 2001Date of Patent: May 13, 2003Assignee: LSI Logic CorporationInventor: Barry Caldwell
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Patent number: 6562700Abstract: A process is disclosed for removing a photoresist mask used to form openings in an underlying layer of low k carbon-doped silicon oxide dielectric material of an integrated circuit structure formed on a semiconductor substrate, which comprises exposing the photoresist mask in a plasma reactor to a plasma formed using a reducing gas until the photoresist mask is removed. In a preferred embodiment the reducing gas is selected from the group consisting of NH3, H2, forming gas, and a mixture of NH3 and H2.Type: GrantFiled: May 31, 2001Date of Patent: May 13, 2003Assignee: LSI Logic CorporationInventors: Sam Gu, David Pritchard, Derryl D. J. Allman, Ponce Saopraseuth, Steve Reder
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Patent number: 6564299Abstract: An addressable circuit configured to control a definition of an addressable range for the circuit. The circuit may comprise at least one register, at east one flag, an input and control logic. The register may be configured to define a range used for determining an addressable range for the circuit. The flag may be configured to define whether a predetermined range is to be inverted for determining the addressable range for the circuit. The input may be configured to receive an address for an access to the circuit. The control logic may be configured to process the received address to determine whether the received address is within the addressable range for the circuit, the control logic being responsive to the register and to the flag for determining the addressable range therefrom.Type: GrantFiled: July 30, 2001Date of Patent: May 13, 2003Assignee: LSI Logic CorporationInventor: Stefan Auracher
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Patent number: 6564361Abstract: The present invention comprises method for optimizing an integrated circuit design that includes computing of capacities and delays of an integrated circuit design, resynthesizing said integrated circuit design utilizing a plurality of local optimization procedures, and removing overlap the local optimization procedures can include a local resynthesis of logic trees procedure that utilizes multiple cost functions, a dynamic buffer and inverter tree optimization procedure, and a cell resizing procedure. Generally, faster local optimization procedures are applied first and slower, more thorough procedures are applied to areas where the faster procedures have not solved the optimization tasks.Type: GrantFiled: October 2, 2000Date of Patent: May 13, 2003Assignee: LSI Logic CorporationInventors: Andrej A. Zolotykh, Elyar E. Gasanov, Alexander S. Podkolzin, Valery B. Kudryavtsev
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Patent number: 6564313Abstract: The invention contemplates a system and method for efficient instruction prefetching based on the termination of loops. A computer system may be contemplated herein, wherein the computer system may include a semiconductor memory device, a cache memory device and a prefetch unit. The system may also include a memory bus to couple the semiconductor memory device to the prefetch unit. The system may further include a circuit coupled to the memory bus. The circuit may detect a branch instruction within the sequence of instructions, such that the branch instruction may target a loop construct. A circuit may also be contemplated herein. The circuit may include a detector coupled to detect a loop within a sequence of instructions. The circuit may also include one or more counting devices coupled to the detector. A first counting device may count a number of clock cycles associated with a set of instructions within a loop construct.Type: GrantFiled: December 20, 2001Date of Patent: May 13, 2003Assignee: LSI Logic CorporationInventor: Asheesh Kashyap