摘要:
A ball grid array (BGA) package test module includes BGA packages, a module board, and test architecture for use in testing the BGA packages while they are mounted to the module board. The test architecture of the BGA package test module includes package test signal lines connected to solder balls of the BGA packages as extending along a bottom surface of the BGA packages, board test signal lines extending along the module board, and electrical junctions that interconnect the package and board test signal lines. Signals from the BGA packages can be picked up by the probe of a testing apparatus via the board test signal lines. The present invention is advantageous in that it minimizes the effect of stubbing by the test signal lines when the memory module is operating.
摘要:
A memory system includes a memory controller, a memory bus connected to the memory controller, and a plurality of memory modules connected along the memory bus, where each of the memory modules includes a plurality of memory devices. The system also includes a dummy stub or a dummy module connected to the memory bus between the memory controller and the memory module closest to the memory controller among the plurality of memory modules. The dummy stub or dummy module improves a signal integrity of at least the memory module closest to the memory controller.
摘要:
A data receiver includes a first buffer circuit and a second buffer circuit. The first buffer circuit varies a resistance of a data path and a resistance of a reference voltage path based on a plurality of control signals, and adjusts a voltage level of an input data signal and a level of a reference voltage to generate an internal data signal and an internal reference voltage based on the varied resistance of the data path and the varied resistance of the reference voltage path. The second buffer circuit compares the internal data signal with the internal reference voltage to generate a data signal.
摘要:
A method of forming an integrated circuit module may include interposing an auxiliary PCB between at least one semiconductor chip and a main PCB, the auxiliary PCB having at least one circuit pattern for electrical connection to one of the semiconductor chip and at least one circuit pattern formed on the main PCB.
摘要:
A memory module socket disposed on a principal surface of a mainboard, and adapted to mechanically receive and electrically connect a memory module with a mainboard, the memory module socket including a first unit socket having a plurality of first socket pins adapted to electrically connect a first connector disposed on an edge of the memory module, and a second unit socket having a plurality of second socket pins adapted to electrically connect to a second connector disposed on the memory module orthogonal to the first connector, wherein the memory module as installed in the memory module socket is parallel to the principal surface of the mainboard.
摘要:
A method of forming an integrated circuit module may include interposing an auxiliary PCB between at least one semiconductor chip and a main PCB, the auxiliary PCB having at least one circuit pattern for electrical connection to one of the semiconductor chip and at least one circuit pattern formed on the main PCB.
摘要:
A structure of an integrated circuit module includes a wiring board, a plurality of integrated circuits and at least one terminating resistance circuit. The wiring board has a mounting region on at least one surface thereof. The plurality of integrated circuits are mounted in the mounting region of the wiring board and spaced from one another in a first direction. The at least one terminating resistance circuit is arranged between at least two adjacent integrated circuits, and coupled to an output of a last of the plurality of integrated circuits.
摘要:
A semiconductor memory device and a semiconductor memory system. The semiconductor memory device includes channels configured to transmit signals from a transmitter to a receiver, and a crosstalk compensator. The crosstalk compensator may be connected between the channels to compensate for crosstalk. The crosstalk compensator may comprise a capacitor connected in parallel between the channels, and a switching unit connected between the capacitor and one of the channels. The switching unit may control connections or disconnections between the capacitor and the channel. Therefore, the semiconductor memory device and the semiconductor memory system compensate for crosstalk occurring between transmitted signals that are out of phase with each other.
摘要:
A memory module includes a first memory group including a plurality of memory devices, a second memory group including a less number of memory devices with respect to the memory devices in the first memory group, a register configured to provide a command/address signal to the first memory group and a delayed command/address signal to the second memory group, a first signal line configured to transfer the command/address signal to the first memory group, and a second signal line configured to transfer the delayed command/address signal to the second memory group.
摘要:
The present invention relates to a apparatus and method for generating 3-dimensional image, which comprises a image photographing part composed of a camera part, a turn table part, a photographing angle adjustment part, a X-axis adjustment part, and a Y-axis adjustment part; a image photographing control part that creates movement control signals, transmits to said image photographing part, and receives plural digital images photographed by said camera part; a 3-dimensional image generating part that creates 3 dimensional images by using said plural digital images; and a storage part that stores said plural digital images and said 3-dimensional images. The present invention thus provides 3-dimensional images to consumers to see a certain product with its actual view by rotating at a wanted angle.