摘要:
A system, method and program product for retaining a logic state of a processor pipeline architecture are disclosed. A comparator is positioned between two stages of the processor pipeline architecture. A storage capacitor is coupled between a storage node of the comparator and a ground to store an output of the early one of the two stages. A reference logic is provided, which has the same value as the output of the early stage. A logic storing and dividing device is coupled between the reference logic and a reference node of the comparator to generate a logic at the reference node, which is a fraction of the reference logic, and to retain a logic state of the information stored on the storage capacitor. Further mechanisms are provided to determine validity of data stored in the logic storing and dividing device.
摘要:
Systems for switching a displayed signal for a display between a plurality of signals are disclosed. In one embodiment, the system includes a microcontroller; a chooser for choosing a primary signal from a plurality of program-variable signals at the microcontroller; a monitor tuner coupled to the microcontroller for tuning the primary signal during switching of the displayed signal from the primary signal to a secondary signal; a detector coupled to the monitor tuner and the microcontroller for detecting a predetermined condition in the primary signal; and a selector coupled to the microcontroller for switching the displayed signal from the secondary signal to the primary signal upon occurrence of the predetermined condition. A user can switch between signals such as television channels or other dedicated functions without the risk of missing a portion of the program material.
摘要:
A method for increasing the manufacturing yield of field programmable gate arrays (FPGAS) or other programmable logic devices (PLDs). An FPGA or other PLD is formed in several sections, each of the sections having its own power bus and input/output connections. Each section of the FPGA or other PLD is tested to identify defects in the FPGA or other PLD. The FPGA or other PLD is sorted according to whether the section has an acceptable number of defects. An assigned unique number for the FPGA or other PLD chip or part identifies it as partially good. Software for execution and configuring the FPGA or other PLD may use the unique number for programming only the identified functional sections of the FPGA or other PLD. The result is an increase in yield as partially good FPGAs or other PLDs may still be utilized.
摘要:
A fast/slow state machine latch is provided that generates fast and slow select signals for a single toggle, low power multiplexer circuit. In accordance with an embodiment of the present invention, the fast/slow state machine latch includes a first latch with a delayed output, a second latch with an undelayed output, an inverter for coupling the delayed output of the first latch to an input of the second latch, and an exclusive-OR (XOR) gate coupled to the delayed output of the first latch and a data input, an output of the XOR gate coupled to an input of the first latch. A method for incorporating low power multiplexer circuits into a circuit design with minimal input from a circuit designer is also provided.
摘要:
An integrated circuit device includes functional logic, an anti-noise machine, and state monitoring points providing the anti-noise machine with an interface to the functional logic for monitoring states of the functional logic. The anti-noise machine includes indicia defining noise precursor states for the functional logic, and recognition logic coupled to the state monitoring points. The anti-noise machine is operable to generate anti-noise responsive to the recognition logic detecting in the functional logic noise precursor states matching the indicia.
摘要:
An integrated circuit has a power grid and a set of independently switchable voltage islands, together with a system and method for measuring the voltage and history of the voltage on the power grid to determine the correct time to allow a large capacitive load (such as a voltage island) to be switched on to or off the power grid.
摘要:
A digital system and a method for operating the same. The digital system includes (a) a first logic circuit and a second logic circuit, (b) a first register, (c) a second register, (d) a third register, (e) a clock generator circuit, and (f) a controller circuit. The first logic circuit is capable of obtaining first data and sending second data. The second logic circuit is capable of obtaining the second data and sending third data. The clock generator circuit is capable of asserting (i) a first register clock signal at a first time point, (ii) a second register clock signal at a second time point, and (iii) a third register clock signal at a third time point. The controller circuit is capable of (i) determining a fourth time point, (ii) determining a fifth time point, (iii) controlling the clock generator circuit to assert the second register clock signal.
摘要:
A structure comprising an FPGA (Field-Programmable Gate Array) for relieving bottlenecks, and a method for operating the structure. The FPGA comprises multiple FPGA elements each of which includes a CLB (Configurable Logic Block), an instruction queue, and a data buffer. One functional block after another (separate from one another) can be formed in the FPGA via a first local IO (Input/Output) circuit and moved to a second local IO circuit. Within each functional block, a mapped logic location function calculates the direction, distance, and the time for the step from the current location of the functional block stored in a mapped location register, and the destination stored in a mapped destination register, and the time allowed for the movement, and stores the direction and distance of the step in the mapped movement register. Then, the functional block moves according the direction and distance stored in the mapped movement register.
摘要:
A field programmable gate array is described for use in a semiconductor chip such as a VLSI chip. The array is provided with variable wire-through porosity to allow for optimum chip-level routing through the array. This is achieved by dividing the array into blocks which can be individually assessed for required porosity. Then blocks that have been prefabricated with differing porosities are placed in the macro to optimize local chip level routing. The routing of wires is determined by developing a chip floor plan to include early timing allocation and a proposed placement of the array. The floor plan is then overlaid with critical logical wiring nets. From this, an initial selection of blocks is made based on proposed wiring density, and the macro is assembled with the blocks strategically placed therein. The procedure is likewise applicable to other types of densely obstructed cores embedded with a chip.
摘要:
A method and system for modifying the function of a state machine having a programmable logic device. The method including: (a) modifying a high-level design of the state machine to obtain a modified high-level design of the state machine with a modified function; (b) generating a programmable logic device netlist from differences in the high-level design and the modified design; and (c) installing the modified function into the state machine by programming the programmable logic device based on the programmable logic device netlist.