公开(公告)号：US09281049B1

公开(公告)日：2016-03-08

申请号：US14525875

申请日：2014-10-28

Applicant: Xilinx, Inc.

Inventor： Terence J. Magee ,  Jayant Mittal

IPC: G11C7/10 ,  G11C11/409 ,  G11C11/4076 ,  G11C7/22

CPC classification number: G11C11/409 ,  G06F13/1694 ,  G11C7/22 ,  G11C11/4076

Abstract: Systems, devices, and circuits for source-synchronous memory interfaces are disclosed. For example, a device includes a first NAND gate with an input for receiving a serial mode enable signal. In addition, the device also includes a second NAND gate with an input for receiving a forwarded strobe signal and an input for receiving an output of the first NAND gate. The device also includes a third NAND gate with an input for receiving a data strobe signal, and an XNOR gate with an input for receiving an output of the second NAND gate and an input for receiving an output of the third NAND gate.

Abstract translation: 公开了用于源同步存储器接口的系统，设备和电路。 例如，设备包括具有用于接收串行模式使能信号的输入的第一NAND门。 此外，该装置还包括具有用于接收转发的选通信号的输入的第二与非门和用于接收第一NAND门的输出的输入。 该器件还包括具有用于接收数据选通信号的输入的第三NAND门和具有用于接收第二NAND门的输出的输入的XNOR门和用于接收第三NAND门的输出的输入。

公开(公告)号：US09324409B1

公开(公告)日：2016-04-26

申请号：US14534493

申请日：2014-11-06

Applicant: Xilinx, Inc.

Inventor： Terence J. Magee ,  Jayant Mittal

IPC: G11C8/16 ,  G11C11/409

CPC classification number: G11C7/1066

Abstract: A method, non-transitory computer readable medium and circuit for gating a strobe (DQS) signal are disclosed. The method sends a read command to a memory, sends a strobe clock signal after the read command is sent and before the DQS signal is received from the memory, wherein the strobe clock signal comprises a duration equal to a duration of the DQS signal, gates the DQS signal based on the strobe clock signal to generate a positively gated strobe signal for indicating a rising edge of the DQS signal, wherein the gating is performed during a pre-amble of the DQS signal and generates a negatively gated strobe signal based on the positively gated strobe signal for indicating a falling edge of the DQS signal.

Abstract translation: 公开了一种用于选通选通（DQS）信号的方法，非暂时性计算机可读介质和电路。 该方法向存储器发送读命令，在读命令发送之后并且在从存储器接收到DQS信号之前发送选通时钟信号，其中选通时钟信号包括等于DQS信号持续时间的持续时间，门 所述DQS信号基于所述选通时钟信号以产生用于指示所述DQS信号的上升沿的肯定选通信号，其中所述门控在所述DQS信号的前同步码期间执行，并且基于所述DQS信号产生负门控选通信号 用于指示DQS信号的下降沿的正门控选通信号。