Abstract: One embodiment of the present invention sets forth an abstracted memory subsystem comprising abstracted memories, which each may be configured to present memory-related characteristics onto a memory system interface. The characteristics can be presented on the memory system interface via logic signals or protocol exchanges, and the characteristics may include any one or more of, an address space, a protocol, a memory type, a power management rule, a number of pipeline stages, a number of banks, a mapping to physical banks, a number of ranks, a timing characteristic, an address decoding option, a bus turnaround time parameter, an additional signal assertion, a sub-rank, a number of planes, or other memory-related characteristics. Some embodiments include an intelligent register device and/or, an intelligent buffer device. One advantage of the disclosed subsystem is that memory performance may be optimized regardless of the specific protocols used by the underlying memory hardware devices.

Abstract: A memory module, which includes at least one memory stack, comprises a plurality of DRAM integrated circuits and an interface circuit. The interface circuit interfaces the memory stack to a host system so as to operate the memory stack as a single DRAM integrated circuit. In other embodiments, a memory module includes at least one memory stack and a buffer integrated circuit. The buffer integrated circuit, coupled to a host system, interfaces the memory stack to the host system so to operate the memory stack as at least two DRAM integrated circuits. In yet other embodiments, the buffer circuit interfaces the memory stack to the host system for transforming one or more physical parameters between the DRAM integrated circuits and the host system.

Abstract: Large capacity memory systems are constructed using stacked memory integrated circuits or chips. The stacked memory chips are constructed in such a way that eliminates problems such as signal integrity while still meeting current and future memory standards.

Abstract: One embodiment of the present invention sets forth a memory module that includes at least one memory chip, and an intelligent chip coupled to the at least one memory chip and a memory controller, where the intelligent chip is configured to implement at least a part of a RAS feature. The disclosed architecture allows one or more RAS features to be implemented locally to the memory module using one or more intelligent register chips, one or more intelligent buffer chips, or some combination thereof. Such an approach not only increases the effectiveness of certain RAS features that were available in prior art systems, but also enables the implementation of certain RAS features that were not available in prior art systems.

Abstract: In one embodiment, an interface circuit is configured to couple to one or more flash memory devices and is further configured to couple to a host system. The interface circuit is configured to present at least one virtual flash memory device to the host system, wherein the interface circuit is configured to implement the virtual flash memory device using the one or more flash memory devices to which the interface circuit is coupled.

Abstract: One embodiment of the present invention sets forth an abstracted memory subsystem comprising abstracted memories, which each may be configured to present memory related characteristics onto a memory system interface. The characteristics can be presented on the memory system interface via logic signals or protocol exchanges, and the characteristics may include any one or more of, an address space, a protocol, a memory type, a power management rule, a number of pipeline stages, a number of banks, a mapping to physical banks, a number of ranks, a timing characteristic, an address decoding option, a bus turnaround time parameter, an additional signal assertion, a sub-rank, a number of planes, or other memory-related characteristics. Some embodiments include an intelligent register device and/or, an intelligent buffer device. One advantage of the disclosed subsystem is that memory performance may be optimized regardless of the specific protocols used by the underlying memory hardware devices.

Abstract: In one embodiment, an interface circuit is configured to couple to one or more flash memory devices and is further configured to couple to a host system. The interface circuit is configured to present at least one virtual flash memory device to the host system, wherein the interface circuit is configured to implement the virtual flash memory device using the one or more flash memory devices to which the interface circuit is coupled.

Abstract: A memory module, which includes at least one memory stack, comprises a plurality of DRAM integrated circuits and an interface circuit. The interface circuit interfaces the memory stack to a host system so as to operate the memory stack as a single DRAM integrated circuit. In other embodiments, a memory module includes at least one memory stack and a buffer integrated circuit. The buffer integrated circuit, coupled to a host system, interfaces the memory stack to the host system so to operate the memory stack as at least two DRAM integrated circuits. In yet other embodiments, the buffer circuit interfaces the memory stack to the host system for transforming one or more physical parameters between the DRAM integrated circuits and the host system.

Abstract: A memory module, which includes at least one memory stack, comprises a plurality of DRAM integrated circuits and an interface circuit. The interface circuit interfaces the memory stack to a host system so as to operate the memory stack as a single DRAM integrated circuit. In other embodiments, a memory module includes at least one memory stack and a buffer integrated circuit. The buffer integrated circuit, coupled to a host system, interfaces the memory stack to the host system so to operate the memory stack as at least two DRAM integrated circuits. In yet other embodiments, an interface circuit maps virtual addresses from the host system to physical addresses of the DRAM integrated circuits in a linear manner. In a further embodiment, the interface circuit maps one or more banks of virtual addresses from the host system to a single one of the DRAM integrated circuits.

Abstract: In one embodiment, an interface circuit is configured to couple to one or more flash memory devices and is further configured to couple to a host system. The interface circuit is configured to present at least one virtual flash memory device to the host system, wherein the interface circuit is configured to implement the virtual flash memory device using the one or more flash memory devices to which the interface circuit is coupled.

Abstract: One embodiment of the present invention sets forth an abstracted memory subsystem comprising abstracted memories, which each may be configured to present memory-related characteristics onto a memory system interface. The characteristics can be presented on the memory system interface via logic signals or protocol exchanges, and the characteristics may include any one or more of, an address space, a protocol, a memory type, a power management rule, a number of pipeline stages, a number of banks, a mapping to physical banks, a number of ranks, a timing characteristic, an address decoding option, a bus turnaround time parameter, an additional signal assertion, a sub-rank, a number of planes, or other memory-related characteristics. Some embodiments include an intelligent register device and/or, an intelligent buffer device. One advantage of the disclosed subsystem is that memory performance may be optimized regardless of the specific protocols used by the underlying memory hardware devices.

Abstract: In one embodiment, an interface circuit is configured to couple to one or more flash memory devices and is further configured to couple to a host system. The interface circuit is configured to present at least one virtual flash memory device to the host system, wherein the interface circuit is configured to implement the virtual flash memory device using the one or more flash memory devices to which the interface circuit is coupled.

Abstract: A memory module, which includes at least one memory stack, comprises a plurality of DRAM integrated circuits and an interface circuit. The interface circuit interfaces the memory stack to a host system so as to operate the memory stack as a single DRAM integrated circuit. In other embodiments, a memory module includes at least one memory stack and a buffer integrated circuit. The buffer integrated circuit, coupled to a host system, interfaces the memory stack to the host system so to operate the memory stack as at least two DRAM integrated circuits. In yet other embodiments, an interface circuit maps virtual addresses from the host system to physical addresses of the DRAM integrated circuits in a linear manner. In a further embodiment, the interface circuit maps one or more banks of virtual addresses from the host system to a single one of the DRAM integrated circuits.

Abstract: An FPGA-based communications access point and system for reconfiguration of the FPGA via a communications channel are described in various embodiments. One embodiment includes a physical interface circuit, a storage element (e.g., a RAM), an FPGA, and a configuration control circuit. The physical interface circuit is arranged for connection to a communications channel and is coupled to the FPGA. The configuration control circuit includes a controlling circuit (e.g., a PLD) and a memory circuit (e.g., a PROM). The PROM is configured with an initial configuration bitstream for the FPGA. The initial configuration bitstream implements both a communications protocol and a control function that writes configuration bits received by the FPGA via the communications channel to the RAM. The control function also generates a reconfiguration signal responsive to a first predetermined condition.

Abstract: A method for creating a physical layout of an analog integrated circuit characterized by the steps of developing a library of device modules and then assembling the device modules in an iterative fashion to create the desired analog circuit. The iterative process is preferably performed in a computerized spreadsheet program by developing an initial tiling script for the device modules, calculating the operating specifications of the circuit produced by the tiling script, comparing the calculated operating specifications against the desired operating parameters of the circuit and modifying the tiling script and repeating the process until the calculated operating specifications meet the desired operating parameters. In one embodiment the desired operating parameters include operating parameters of the analog circuit taken as a whole and in another embodiment the desired operating parameters include operating parameters of individual devices within the analog circuit.