32.
    发明专利
    未知

    公开(公告)号:DE10201431C1

    公开(公告)日:2003-08-21

    申请号:DE10201431

    申请日:2002-01-16

    Abstract: An integrated circuit contains a register circuit for storing reference data for a test operation of the integrated circuit and a comparison circuit for comparing data to be read out. The comparison circuit outputs a plurality of comparison signals representing compressed comparison results. A plurality of output circuits are connected to the output of the comparison circuit, the output circuits receive one of the comparison signals in each case. The comparison signals are present at the output circuit over a plurality of clock edges or clock periods of a control clock. Each of the output circuits is connected to an interface pad for externally outputting the comparison signals. In the test operation, an external test device is connected to the interface pads of the integrated circuit. Despite a reduction in the transmission frequency to the test device, the full information content of the comparison signals can be transmitted.

    38.
    发明专利
    未知

    公开(公告)号:DE19924244B4

    公开(公告)日:2006-03-09

    申请号:DE19924244

    申请日:1999-05-27

    Abstract: Each redundant unit of an integrated memory device is assigned respective programmable elements, comparison units, a code converting unit, a logic unit and a multiplexer. Each multiplexer has a first switching state, in which it connects outputs of the first comparison units to first inputs of the logic unit, and a second switching state, in which it connects outputs of the code converting unit to the first inputs of the logic unit. In the second switching state of the multiplexers, each redundant unit is assigned a different address in the unprogrammed state of the programmable elements. Therefore, redundant units can be selected individually for test purposes.

    39.
    发明专利
    未知

    公开(公告)号:DE102004021694A1

    公开(公告)日:2005-11-24

    申请号:DE102004021694

    申请日:2004-04-30

    Abstract: The invention relates to a method for controlling write access to a semiconductor memory, particularly a DDR graphics memory, in which a multiplicity of data packets are written to the semiconductor memory per data burst, in which write access is initiated by a write command and the data packets which are to be written to the memory are latched under the control of a cycle of a data strobe write clock control signal, where the data packets are latched by alternately using a respective falling and rising edge of the data strobe write clock control signal, and where the data strobe write clock control signal has a defined state at the start of the write operation. The invention also relates to a circuit arrangement for carrying out the method.

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