摘要:
A circuit board assembly includes a first circuit board having an electrical connection circuit on a surface thereof. A second circuit board is on the surface of the first circuit board. A first memory socket is mounted on the second circuit board. The first memory socket is only electrically connected to the electrical connection circuit through the second circuit board. A second memory socket is mounted on the second circuit board. The second memory socket that is only electrically connected to the electrical connection circuit through the second circuit board.
摘要:
A buffered memory module includes a buffer circuit mounted and a plurality of memory devices mounted on the first surface of the board, the memory devices being electrically connected to the buffer circuit. The memory module also includes a plurality of test pads located on a second surface of the board and electrically connected to the buffer circuit.
摘要:
A memory module includes a first set of at least one first type of memory device and a second set of at least one second type of memory device having a higher capacity than the first type. In addition, an additional capacity portion of the first and second sets stores information for an additional function of the memory module, and a remaining capacity portion of the first and second sets forms a rank of the memory module. The memory module avoids an asymmetric topology of signal lines and yet provides additional memory capacity.
摘要:
For ODT (on-die termination) control within a memory module system, just one pin from the memory controller is used for sending command signals indicating an activated one of the memory devices. The activated memory device includes components that are turned on for generating the ODT control signal for controlling an ODT circuit of inactivated memory device(s). The components for generating an ODT control signal within the inactivated memory devices are turned off for minimized power consumption.
摘要:
A die package includes a substrate, a die mounted on the substrate, and a ZQ resistor disposed in the die package and connected to the substrate and the die. The ZQ resistor may be used to calibrate impedance of the die.
摘要:
A data transmission system and method characterized by the use of multiple differential output amplifiers to transmits differential data signals that vary in accordance with control signals derived from a reference data output strobe signal, and multiple differential amplifiers to receive the differential data signals and detect such variations to generate a data input strobe signal corresponding to the data output strobe signal.
摘要:
Embodiments of the invention include a stacked board-on-chip (BOC) package having a mirroring structure and a dual inline memory module (DIMM) on which the stacked BOC package is mounted. A bottom surface of a first semiconductor chip faces a bottom surface of a second semiconductor chip. An interposer electrically connects first and second packages, respectively comprising the first and second semiconductor chips, to each other. The DIMM is obtained by electrically connecting BOC packages to each other on upper and lower substrates of a printed circuit board. Since a height of the stacked BOC packages is greater than a height of a conventional stacked BOC package, the DIMM has a minimum stub length and an optimal topology. Hence, the DIMM can have a signal with excellent fidelity by reducing a load upon a signal line, and installation or wiring of components within the DIMM 300 requires less effort.
摘要:
Embodiments of the invention include a stacked board-on-chip (BOC) package having a mirroring structure and a dual inline memory module (DIMM) on which the stacked BOC package is mounted. A bottom surface of a first semiconductor chip faces a bottom surface of a second semiconductor chip. An interposer electrically connects first and second packages, respectively comprising the first and second semiconductor chips, to each other. The DIMM is obtained by electrically connecting BOC packages to each other on upper and lower substrates of a printed circuit board. Since a height of the stacked BOC packages is greater than a height of a conventional stacked BOC package, the DIMM has a minimum stub length and an optimal topology. Hence, the DIMM can have a signal with excellent fidelity by reducing a load upon a signal line, and installation or wiring of components within the DIMM 300 requires less effort.
摘要:
Embodiments of the present invention may include an integrated circuit module structure for a high-density mounting. An embodiment may include a wiring board, having a mounting space with a mounting length determined in a first direction and a mounting width determined in a second direction, on at least one surface thereof, and a plurality of integrated circuit packages having a package mounting combination length longer than the mounting length of the wiring board. An embodiment may also have some packages among the plurality of integrated circuit packages mounted directly on the mounting space, while other packages are mounted indirectly on the mounting space. The present embodiment may have packages that are overlapped horizontally and vertically distant from one another. Embodiments allow a plurality of chips or packages to be mounted in a limited area without changing a form factor of integrated circuit module even when integrated circuit chip or package size increases.
摘要:
A circuit for controlling an AC-timing parameter of a semiconductor memory device and method thereof are provided. The AC-timing parameter control circuit includes a delay-time-defining portion, a comparing portion, and a controlling portion. The control circuit compares the pulse width or period of an input signal to one or more different reference-widths pulses, with the reference width(s) set by the delay-time-defining portion and the reference pulses generated by the comparing portion. The controlling portion indicates whether the input signal width or period was less than or greater than each o the reference-width pulses. The control circuit output signals can be used to tailor the operation of the device based on a direct comparison of an AC-timing parameter to one or more reference values.