摘要:
A composite memory device including discrete memory devices and a bridge device for controlling the discrete memory devices in response to global memory control signals having a format or protocol that is incompatible with the memory devices. The discrete memory devices can be commercial off-the-shelf memory devices or custom memory devices which respond to native, or local memory control signals. The global and local memory control signals include commands and command signals each having different formats. The composite memory device includes a system in package including the semiconductor dies of the discrete memory devices and the bridge device, or can include a printed circuit board having packaged discrete memory devices and a packaged bridge device mounted thereto.
摘要:
There is disclosed a data processing system, comprising: a plurality of data processors (102) configured to perform functions of processing data packets; a server processor (100) configured to generate control data including a list of at least one function to be performed on a received data packet; and a controller in communication with the server processor and configured to process the control data, the controller being responsive to the control data to: select from the plurality of data processors at least one data processor configured to perform the at least one function; and cause the at least one selected data processor to perform the at least one function on the data packet based on the control data.
摘要:
A Dynamic Random Access Memory (DRAM) performs, read, write, and refresh operations. The DRAM includes a plurality of sub-arrays (504), each having a plurality of memory cells (604), each of which is coupled with a complementary bit line pair and a word line. The DRAM further includes a word line enable device (911) for asserting a selected one of the word lines and a column select device for asserting a selected one of the bit line pairs. A timing circuit (908,910,912) is provided for controlling the word line enable device, the column select device, and the read, write, and refresh operations in response to a word line timing pulse (WTPi). The read, write, and refresh operation are performed in the same amount of time.
摘要:
A semiconductor memory device comprises a plurality of memory cells; a plurality of bit and word lines; a plurality of sense amplifiers for sensing and amplifying signals from the bit lines; a plurality of column access devices for coupling the bit lines to a data line of the memory device; delay circuitry for providing a delayed word line timing pulse and a further delayed word line timing pulse; and enable circuitry for enabling the sense amplifier in response to the delayed word line timing pulse and the column access device in response to the further delayed word line timing pulse.
摘要:
A device for carrying a power signal and a serial digital data signal over a cable comprises a connector for connecting to the cable; a splitter having first, second and third ports, the splitter being configured so that the power signal is passed from the first port to the second port, and the digital data signal is passed between the first and third ports; a transceiver coupled to the third port of the splitter for point-to-point communication of the full duplex serial digital data signal over the cable; a power supply for voltage conversion coupled to and powered from the second port of the splitter, the power supply having a power source port connected to the transceiver for powering the transceiver from the power supply; a data port coupled to the transceiver and connectable to a data unit for connecting the digital data signal to the data unit; and an indicator powered by the power supply for indicating a status of the device status.
摘要:
There is disclosed a delay locked loop (300) comprising: a digital delay circuit (302) which enables digital delay elements (400) to provide coarse phase adjustment during initialization in the delay locked loop (300); a counter (308) configured to control the number of the digital delay elements (400) enabled; and an analog delay circuit (304) which provides, after coarse phase adjustment is completed, a fine phase adjustment in the delay locked loop (300), and wherein the analog delay circuit (304) employs a variable control signal during the fine phase adjustment.
摘要:
A method and system for the selective broadcasting of commands to a subset of a plurality of devices connected in series to a memory controller, where each of the plurality of devices has a unique identification number (ID). The memory controller designates the subset of devices to execute the command, excluding the non-selected devices from executing the command. The memory controller encodes the ID numbers of the designated devices into a single coded address, and sends the command along with the coded address in a packet to the series connected devices. Each device receives the packet in a serial bitstream and decodes the coded address using its ID number in order to determine whether it is selected or not. If the device is selected, the command is executed. Otherwise, the packet is forwarded without executing the command.
摘要:
A Flash memory system architecture having serially connected Flash memory devices to achieve high speed programming of data. High speed programming of data is achieved by interleaving pages of the data to be programmed amongst the memory devices in the system, such that different pages of data are stored in different memory devices. A memory controller issues program commands for each memory device. As each memory device receives a program command, it either begins a programming operation or passes the command to the next memory device. Therefore, the memory devices in the Flash system sequentially program pages of data one after the other, thereby minimizing delay in programming each page of data into the Flash memory system. The memory controller can execute a wear leveling algorithm to maximize the endurance of each memory device, or to optimize programming performance and endurance for data of any size.
摘要:
There is disclosed a delay locked loop (300) comprising: a digital delay circuit (302) which enables digital delay elements (400) to provide coarse phase adjustment during initialization in the delay locked loop (300); a counter (308) configured to control the number of the digital delay elements (400) enabled; and an analog delay circuit (304) which provides, after coarse phase adjustment is completed, a fine phase adjustment in the delay locked loop (300), and wherein the analog delay circuit (304) employs a variable control signal during the fine phase adjustment.
摘要:
Each memory cell string in a generic NAND flash cell block connects to a Common Source Line (CLS). A value for applying to the CSL is centrally generated and distributed to a local switch logic unit corresponding to each NAND flash cell block. For source-line page programming, the distribution line may be called a Global Common Source Line (GCSL). In an array of NAND flash cell blocks, only one NAND flash cell block is selected at a time for programming. To reduce power consumption, only the selected NAND flash cell block receives a value on the CSL that is indicative of the value on the GCSL. Additionally, the CSLs of non-selected NAND flash cell blocks may be disabled through an active connection to ground.