摘要:
A phase-locked loop (PLL) having a bias generator capable of reducing noise is provided. In the PLL, a voltage controlled oscillator is driven using a regulator. The bias generator, which applies a bias voltage to the regulator, is configured to have opposite power noise characteristics to the power noise characteristics of the regulator, such that the occurrence of jitter in the PLL is reduced.
摘要:
A semiconductor memory device comprises a variable delay unit and a data trainer. The variable delay unit is configured to generate a write data signal by delaying a write data driving signal by different amounts of time depending on whether the semiconductor memory device is in a data training mode or a normal operating mode, and further configured to generate a read data driving signal by delaying a read data signal by different amounts of time in the data training mode and the normal operating mode. The data trainer is configured to be activated in the data training mode, and while activated, receive the write data signal, compare the write data signal with a predetermined write pattern, perform a data training mode operation, and output the read data signal with a predetermined read pattern.
摘要:
A phase-locked loop (PLL) having a bias generator capable of reducing noise is provided. In the PLL, a voltage controlled oscillator is driven using a regulator. The bias generator, which applies a bias voltage to the regulator, is configured to have opposite power noise characteristics to the power noise characteristics of the regulator, such that the occurrence of jitter in the PLL is reduced.
摘要:
An on-die termination circuit includes a termination resistor unit connected to an external pin, and a termination control unit connected to the termination resistor unit. The termination resistor unit provides termination impedance to a transmission line connected to the external pin. The termination control unit varies the termination impedance in response to a plurality of bits of strength code associated with a data rate.
摘要:
An on-die termination circuit includes a termination resistor unit connected to an external pin, and a termination control unit connected to the termination resistor unit. The termination resistor unit provides termination impedance to a transmission line connected to the external pin. The termination control unit varies the termination impedance in response to a plurality of bits of strength code associated with a data rate.
摘要:
A voltage-controlled oscillator includes an oscillating unit configured to output first and second output clock signals at first and second nodes, respectively, the first and second output clock signals having a frequency that is variable in response to a control voltage. An active element unit connected to the oscillating unit is configured to maintain oscillation of the oscillating unit. A bias current generating unit connected to the active element unit at a bias node provides a bias current to the bias node and is adapted to adjust the bias current in response to a control code. First and second capacitor blocks connected to the oscillating unit and the active element unit provide first and second load capacitances, respectively, to the first and second nodes, respectively, in response to the control code.
摘要:
A voltage-controlled oscillator includes an oscillating unit configured to output first and second output clock signals at first and second nodes, respectively, the first and second output clock signals having a frequency that is variable in response to a control voltage. An active element unit connected to the oscillating unit is configured to maintain oscillation of the oscillating unit. A bias current generating unit connected to the active element unit at a bias node provides a bias current to the bias node and is adapted to adjust the bias current in response to a control code. First and second capacitor blocks connected to the oscillating unit and the active element unit provide first and second load capacitances, respectively, to the first and second nodes, respectively, in response to the control code.
摘要:
A stacked semiconductor memory device according to the inventive concepts may include a plurality of memory chips stacked above a processor chip, a plurality of TSVs, and I/O buffers. The TSVs may pass through the memory chips and are connected to the processor chip. I/O buffers may be coupled between all or part of the memory chips and the TSVs and may be selectively activated on the basis of defective states of the TSVs.
摘要翻译:根据本发明构思的叠层半导体存储器件可以包括堆叠在处理器芯片上方的多个存储器芯片,多个TSV和I / O缓冲器。 TSV可以通过存储器芯片并且连接到处理器芯片。 I / O缓冲器可以耦合在所有或部分存储器芯片和TSV之间,并且可以基于TSV的故障状态来选择性地激活。
摘要:
A memory system includes a memory controller and a memory device. The memory device exchanges data through a first channel with the memory controller, exchanges a first cyclic redundancy check (CRC) code associated with the data through a second channel with the memory controller, and receives a command/address packet including a second CRC code associated with a command/address from the memory controller through a third channel.
摘要:
A data receiver in a memory device includes an integration unit, a sense amplification unit and a latch unit. The integration unit integrates a data signal to generate a first equalization signal in response to a sampling feedback signal. The data signal includes a plurality of data that are sequentially received. The sense amplification unit senses the first equalization signal to generate a second equalization signal in response to a sensing feedback signal. The latch unit latches the second equalization signal to generate a sampling data signal