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    • 9. 发明申请
    • Data mask as write-training feedback flag
    • 数据掩码作为写训练反馈标志
    • US20050240744A1
    • 2005-10-27
    • US10910050
    • 2004-08-03
    • Ashfaq ShaikhBarry Wagner
    • Ashfaq ShaikhBarry Wagner
    • G11C7/10G06F12/00
    • G11C7/1006G11C7/1078G11C7/1087G11C7/1093
    • Methods and apparatuses that enable memory devices to inform graphical processing systems about the results of WRITE de-skew training. A WRITE-TRAINING mode is added to a memory device. When the WRITE-TRAINING mode is asserted the memory data mask (DM) pin is converted to an output port. Incoming WRITE data is strobed-into the memory device and the resulting data pattern is compared to a desired pattern. If the incoming WRITE data and strobed-in data match, that result is sent to the graphical processing system by setting the DM pin HIGH. If the incoming WRITE data and the strobed-in data do not match, that result is sent to the graphical processing system by setting the DM pin LOW. Beneficially, the incoming data and the desired pattern are derived from pseudo random bit sequence (PRBS) sources.
    • 使存储器件能够通知图形处理系统有关WRITE去偏移训练结果的方法和装置。 将WRITE-TRAINING模式添加到存储设备中。 当WRITE-TRAINING模式被置位时,存储器数据掩码(DM)引脚被转换为输出端口。 进入的写入数据被选通到存储器件中,并将所得到的数据模式与期望的模式进行比较。 如果输入的WRITE数据和选通数据匹配,则通过将DM引脚设置为高电平将该结果发送到图形处理系统。 如果输入的写入数据和选通数据不匹配,则通过将DM引脚设置为低电平将该结果发送到图形处理系统。 有利地,从伪随机位序列(PRBS)源导出输入数据和期望模式。