摘要:
A programmable interconnect which closely integrates an independent switching transistor with separate NVM programming and erasing elements. The programming element is an EPROM transistor and the erasing element is a Fowler-Nordheim tunneling device. A unitary floating gate is shared by the switching transistor and the NVM programming and elements which charge and discharge the floating gate. The shared floating gate structure is the memory structure of the integrated programmable interconnect and controls the impedance of the switching transistor.
摘要:
A novel method of connecting and operating an NVM transistor in the switching circuit is provided. A full voltage signal can be switched across an NVM transistor. The device is turned on prior to the signal switching and the electrical characteristics of the NVM device relative to the associated circuitry is carefully regulated to prevent the source-drain voltage from rising above a preselected maximum voltage (e.g. 1 v). Two embodiments of the present invention are described. In the first embodiment, the relative impedances of the NVM transistor and its driving circuit are controlled. The driver circuit and the NVM transistor switch act as a resistor divider circuit with a percentage of the full switching voltage appearing across the NVM transistor and the driver circuit according to their relative impedances. The second embodiment is applicable when the NVM transistor switch drives a capacitive load. The rise time of the signal to be switched is controlled. This can be done by controlling the driver circuit turn-on time, the relative resistor-capacitor (RC) risetime on either side of the NVM switch, or a combination of the two techniques. If the risetime of the switching signal is slow enough, the voltage at the output terminal of the NVM transistor closely follows the input voltage to minimize the source-drain voltage.
摘要:
A monolithic integrated complementary metal oxide semiconductor (CMOS) circuit senses internal junction temperature and converts it to a binary coded decimal output signal. The circuit compares a temperature dependent junction voltage with a bandgap reference voltage controlled by a very stable amplifier. The comparison differential is then converted to a binary coded decimal output signal by an analog to digital converter. The circuit utilizes parasitic bipolar NPN transistor elements formed from a substrate of the chip in a conventional CMOS fabrication process. The principles of the present invention are also broadly applicable to other semiconductor technologies such as integrated injection logic (I.sup.2 L).
摘要:
A cold plate compatible with the Open Compute Project Rack specification is disclosed. The cold plate is mounted in a compatible rack with removable trays mounted on support and coupling rails affixed to the underside of the cold plate thus supporting the trays during insertion and operation.
摘要:
Multicast is performed in a packet-based network switch having a switch fabric of store-and-forward switch nodes. Congestion and blocking at an ingress port is avoided because packet replication is performed at random nodes dispersed throughout the switch fabric. Each multicast packet inserted into the switch fabric by the ingress port is sent to a randomly-selected node. The random node replicates the multicast packet into many unicast packets that are routed to egress ports. A SONET frame can be divided into several multicast packets that are dispersed to different random nodes before replication, thus dispersing congestion. Replication can be delayed until the next SONET frame to prevent latency build up from propagation delays in the switch fabric. Alternately, the SONET payload envelope pointer can be advanced by the propagation delay. Lookup tables at the random nodes can include a list of destinations so that all the destination addresses do not have to be stored in each multicast packet header.
摘要:
A programmable interconnect cell for selectively connecting circuit nodes of a field programmable integrated circuit array in a semiconductor substrate includes a switch field effect transistor, a sense field effect transistor, and an electron tunneling device with the transistors and electron tunneling device having interconnected floating gates and interconnected control gates. The floating gates comprise a first polysilicon layer which is restricted to each cell, and the control gates comprise a second polysilicon layer which extends to adjacent cells in the row. The source/drain regions of the sense transistor extend to source/drain regions of sense amplifiers in adjacent rows. Programming and erasing of the switch transistor is effected entirely by electron tunneling in the electron tunneling device.
摘要:
An output buffer and a method provide controlled low noise operation using a current mirror which provides a rapid increase in the gate voltage of an output transistor prior to the gate voltage reaching the threshold voltage of the output transistor and provide a constant current voltage ramp thereafter. In one embodiment, the present invention automatically compensates for normal variations in transistor channel length due to fluctuations of process parameters. In one embodiment, a mechanism for switching off the current mirror is provided to reduce power consumption.
摘要:
A method and an apparatus to heat an integrated circuit and regulate its temperature for the purposes of burn-in and temperature testing are provided. The circuit is heated internally by integrating a heating means. Sensing and controlling means may also be integrated. Such heating and controlling are activated by external signals applied to the IC. Practical means to heat the integrated circuit with pre-existing components is provided.
摘要:
A method for operating a multiple input linear feedback shift register (LFSR) as a conventional shift register so that input multiplexers can be eliminated on each parallel input when associated with a CrossCheck matrix. A linear feedback shift register coupled through sense lines of a CrossCheck test matrix is operated as a serial shift register by inputting serial data at the serial data input while maintaining parallel input lines at a zero logic level. Further, zero logic level serial data (null data) is input serially through the shift register prior to the enabling of the parallel input. The method significantly reduces the number of logic structures required to shift the data out serially.
摘要:
Various embodiments disclose a system and method to provide cooling to electronic components, such as electronic modules or the like. The system includes one or more cold plates that are configured to be thermally coupled to one or more of the electronic components. Internally, each of the cold plates has a cooling fluid flowing inside of at least one passageway. The cooling fluid thus removes heat from the electronic components primarily by conductive heat transfer. An input and an output header are attached to opposite ends of the passageway to allow entry and exit of the cooling fluid. The input and output headers are attached to an external system to circulate the cooling fluid.