摘要:
A circuit incorporating a current starved ring oscillator is coupled to a power gate switch in an integrated circuit. The circuit incorporating the current starved ring oscillator amplifies a voltage difference between a virtual ground associated with the power gate switch and ground, and converts the difference to a frequency. Digital logic monitors the output of the ring oscillator using a counter and a reference clock. Control circuitry controls operation of the integrated circuit in dependence on the monitored conditions associated with the power gate switch. A method monitors a virtual ground voltage across a power gate switch in an integrated circuit; and controls operation of the integrated circuit in dependence on the monitored virtual ground voltage.
摘要:
A circuit incorporating a current starved ring oscillator is coupled to a power gate switch in an integrated circuit. The circuit incorporating the current starved ring oscillator amplifies a voltage difference between a virtual ground associated with the power gate switch and ground, and converts the difference to a frequency. Digital logic monitors the output of the ring oscillator using a counter and a reference clock. Control circuitry controls operation of the integrated circuit in dependence on the monitored conditions associated with the power gate switch. A method monitors a virtual ground voltage across a power gate switch in an integrated circuit; and controls operation of the integrated circuit in dependence on the monitored virtual ground voltage.
摘要:
A method for manufacturing an integrated circuit having improved defect-limited yield. Each conductor on the integrated circuit is represented as an electrical element of a network, having branch voltages and currents. The width of the conductor is advantageously selected to have the minimum width necessary to produce signal levels that have sufficient noise margins. An integrated circuit conductive grid is thus realized having a reduced cross sectional area along a portion of various conductor element lengths, to reduce the risk that particles produced during manufacturing will result in bridging of adjacent conductor elements.
摘要:
A computer-based method automatically synthesizes, optimizes and compiles high performance control logic using SRCMOS LOGIC ARRAY MACROS, abbreviated as SLAMs. The method includes a series of steps that transform a high level design description into a set of SLAMs, and includes the steps of partitioning the logic description of a unit into blocks that are suitable for mapping to a target SLAM structure; mapping each logic partition to the target SLAM structure; creating a configuration and relative layout for the internal structure for each SLAM; creating an external description for each SLAM, each description being of sufficient detail to carry out physical design and integration of the unit which contains the SLAM; assembling the partitions implemented as SLAMs with other macros in the unit; resolving interface conflicts between the different macros by selecting appropriate signal interfaces for various SLAMs; repeatedly changing the external specifications of the various SLAMs; analyzing the performance of the unit; automatically compiling the schematic and layout of each SLAM within the unit based on the configuration and relative layout; and assembling the macros and analyzing the design for design rule violations.
摘要:
Resistive memories having a not-and (NAND) structure including a resistive memory cell. The resistive memory cell includes a resistive memory element for storing a resistance value and a memory element access device for controlling access to the resistive memory element. The memory element access device is connected in parallel to the resistive memory element.
摘要:
A memory device for performing logical operations on two or more input variables includes a match line and first and second memory cells. The first and second memory cells collectively include a first, second, third and fourth memory element. The first, second, third and fourth memory elements may have either a first value or a second value programmed therein and wherein the first, second, third and fourth memory elements are programmed to either the high or low resistive values based on a particular logic function to be performed.
摘要:
A memory system includes a content addressable memory (CAM) including a plurality of match lines, each match line having a plurality of memory cells coupled thereto. The system also includes a match detector coupled to the CAM and a reference match line having a plurality of reference memory cells coupled thereto, the reference memory cells being of the same type and the memory cells. The system also includes a match line sensor coupled to the reference match line and the match detector that determines a characteristic of the reference match line and provides a timing signal to the match detector based on the characteristic.
摘要:
A circuit design method, computer program product and chip design system embodying the method. A gate selected for static timing analysis (STA) from a circuit design. Initial performance characteristics (e.g., load and transition slew) are determined for the selected gate. A charge equivalent effective capacitance (CQeff) is determined for the gate from the initial performance characteristics. A gate delay is determined in a single pass for the gate using CQeff as an effective load for said selected gate. Optionally, if the total gate load capacitance (Ctot) exceeds CQeff by less than a minimum, the effective capacitance (Ceff) is determined and used for determining the gate delay instead.
摘要:
The present invention divides a large graphics file into smaller “frames” of graphics files. The division process is preferably load balanced amongst any number of processors. This allows many processors to be used in parallel to divide the large graphics file and to then process the smaller output frames. Additionally, the load balancing is performed in such a manner that only portions of the graphics file need be loaded by any one processor. This saves memory and computational requirements. Preferably, the graphics file is divided in a three-dimensional manner, such that any one processor will be assigned one three-dimensional block or volume of the graphics file. The three-dimensional partition of the graphics file will become one frame, and the one processor accesses the graphics file to copy its three-dimensional partition into the new output frame.
摘要:
A memory system for storing one or more addresses includes a transposable memory having word lines, bit lines, transposed word lines and transposed bit lines and that receives and stores an input array having dimensions M by N and a content addressable memory (CAM) that reads the transposed word lines of the transposable memory to form input words and that stores the input words in an N by M array.