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    Test data generator
    1.
    发明授权
    Test data generator 失效
    测试数据生成器

    公开(公告)号：US06865707B2

    公开(公告)日：2005-03-08

    申请号：US10109657

    申请日：2002-04-01

    申请人： Wolfgang Ernst ,  Gunnar Krause ,  Justus Kuhn ,  Jens Luepke ,  Jochen Mueller ,  Peter Poechmueller ,  Michael Schittenhelm

    发明人： Wolfgang Ernst ,  Gunnar Krause ,  Justus Kuhn ,  Jens Luepke ,  Jochen Mueller ,  Peter Poechmueller ,  Michael Schittenhelm

    IPC分类号： G01R31/3183 ,  G11C29/14 ,  G11C29/36 ,  G01R31/28 ,  G06F11/00

    CPC分类号： G11C29/14 ,  G01R31/3183 ,  G11C29/36

    摘要： Test data generator for generating test data patterns for the testing of a circuit having a frequency multiplication circuit, which increases a low clock frequency of an input clock signal received by a test unit with a specific clock frequency multiplication factor. Also provided is a plurality of data registers for storing test data words read from the data registers, and multiplexer that switches through a test data word read from a data register with the high clock frequency of the output clock signal to a data bus in a way dependent on a register selection control datum of a multi-position register selection control data vector.

    摘要翻译： 用于产生用于测试具有倍频电路的电路的测试数据模式的测试数据发生器，其增加由测试单元以特定时钟倍频因子接收的输入时钟信号的低时钟频率。 还提供了多个数据寄存器，用于存储从数据寄存器读取的测试数据字，以及多路复用器，以一种方式将通过从输出时钟信号的高时钟频率从数据寄存器读取的测试数据字切换到数据总线 取决于多位置寄存器选择控制数据向量的寄存器选择控制基准。

    Test circuit
    2.
    发明授权
    Test circuit 失效
    测试电路

    公开(公告)号：US06744272B2

    公开(公告)日：2004-06-01

    申请号：US10100504

    申请日：2002-03-18

    申请人： Wolfgang Ernst ,  Gunnar Krause ,  Justus Kuhn ,  Jens Luepke ,  Jochen Mueller ,  Peter Poechmueller ,  Michael Schittenhelm

    发明人： Wolfgang Ernst ,  Gunnar Krause ,  Justus Kuhn ,  Jens Luepke ,  Jochen Mueller ,  Peter Poechmueller ,  Michael Schittenhelm

    IPC分类号： G01R3128

    CPC分类号： G11C29/48

    摘要： A test circuit is adapted to test circuits having a high-frequency clock signal. The test circuit is positioned between a conventional tester and the circuit to be tested. The test circuit includes a frequency multiplication circuit which multiplies the clock signal of the conventional tester to produce a high-frequency clock signal. The test circuit also receives control signals from the conventional tester. The control signals are output to the circuit to be tested via a bus.

    摘要翻译： 测试电路适用于测试具有高频时钟信号的电路。 测试电路位于常规测试仪和待测电路之间。 测试电路包括一个倍频电路，它将传统测试仪的时钟信号相乘以产生高频时钟信号。 测试电路还接收来自常规测试仪的控制信号。 控制信号通过总线输出到要测试的电路。

    Test circuit for testing a circuit
    3.
    发明授权
    Test circuit for testing a circuit 有权
    用于测试电路的测试电路

    公开(公告)号：US06618305B2

    公开(公告)日：2003-09-09

    申请号：US10137125

    申请日：2002-05-02

    申请人： Wolfgang Ernst ,  Gunnar Krause ,  Peter Poechmueller ,  Justus Kuhn ,  Jens Luepke ,  Jochen Mueller ,  Michael Schittenhelm

    发明人： Wolfgang Ernst ,  Gunnar Krause ,  Peter Poechmueller ,  Justus Kuhn ,  Jens Luepke ,  Jochen Mueller ,  Michael Schittenhelm

    IPC分类号： G11C700

    CPC分类号： G11C29/48 ,  G01R31/31917 ,  G01R31/31926

    摘要： Test circuit for testing a circuit to be tested, having a test data generator, which generates test data in a manner dependent on data control signals which are received via data control lines from an external test unit, a data output driver for outputting the generated test data via data line pairs of a differential data bus to the circuit to be tested, a data input circuit for receiving data that are read from the circuit to be tested and transmitted via the data line pairs of the differential data bus, a data comparison circuit, which compares the generated data and the read-out data and, in a manner depend at on the comparison result transmits an indication signal, which indicates whether the circuit to be tested is functional, to the external test unit via an indication signal line.

    摘要翻译： 用于测试要测试的电路的测试电路，具有测试数据发生器，其以取决于经由数据控制线从外部测试单元接收的数据控制信号的方式产生测试数据，用于输出所产生的测试的数据输出驱动器 通过差分数据总线的数据线对与要测试的电路的数据的数据输入电路，用于接收经由差分数据总线的数据线对被测试和发送的电路读取的数据的数据输入电路，数据比较电路 ，其比较生成的数据和读出的数据，并且以取决于比较结果的方式，经由指示信号线将指示要测试的电路的指示信号发送到外部测试单元。

    Address generator for generating addresses for testing a circuit
    4.
    发明授权
    Address generator for generating addresses for testing a circuit 失效
    用于生成用于测试电路的地址的地址发生器

    公开(公告)号：US06957373B2

    公开(公告)日：2005-10-18

    申请号：US10092129

    申请日：2002-03-06

    申请人： Wolfgang Ernst ,  Justus Kuhn ,  Jens Luepke ,  Peter Poechmüller ,  Gunnar Krause ,  Jochen Mueller ,  Michael Schittenhelm

    发明人： Wolfgang Ernst ,  Justus Kuhn ,  Jens Luepke ,  Peter Poechmüller ,  Gunnar Krause ,  Jochen Mueller ,  Michael Schittenhelm

    IPC分类号： G11C29/20 ,  G01R31/28 ,  G06F11/00 ,  G06F12/00 ,  G06F12/02 ,  G06F12/04

    CPC分类号： G11C29/20

    摘要： An address generator is provided for generating addresses for testing an addressable circuit. The address generator can include a base address register for buffer-storing a base address. The base address register can be assigned an associated offset register group having a plurality of offset registers for buffer-storing relative address values. Further, the address generator can include a first multiplexer circuit which is dependent on a base register selection control signal, switches through an address buffer-stored in the base address register to a first input of an addition circuit and to an address bus, which is connected to the circuit to be tested. A second multiplexer circuit can be dependent on the base register selection control signal, through-connects the offset register group associated with the through-connected base address register to a third multiplexer circuit, which is dependent on an offset register selection control signal.

    摘要翻译： 提供地址发生器用于产生用于测试可寻址电路的地址。 地址生成器可以包括用于缓冲存储基地址的基地址寄存器。 可以为基地址寄存器分配具有多个偏移寄存器的相关联的偏移寄存器组，用于缓冲存储相对地址值。 此外，地址生成器可以包括依赖于基本寄存器选择控制信号的第一多路复用器电路，将存储在基地址寄存器中的地址缓冲器切换到加法电路的第一输入和地址总线，地址总线 连接到要测试的电路。 第二多路复用器电路可以依赖于基本寄存器选择控制信号，将与连接的基地址寄存器相关联的偏移寄存器组连接到第三多路复用器电路，该第三多路复用器电路取决于偏移寄存器选择控制信号。

    Test circuit for testing a synchronous memory circuit
    5.
    发明授权
    Test circuit for testing a synchronous memory circuit 有权
    用于测试同步存储器电路的测试电路

    公开(公告)号：US07117404B2

    公开(公告)日：2006-10-03

    申请号：US10106414

    申请日：2002-03-26

    申请人： Wolfgang Ernst ,  Gunnar Krause ,  Justus Kuhn ,  Jens Lüpke ,  Peter Poechmüller ,  Jochen Mueller ,  Michael Schittenhelm

    发明人： Wolfgang Ernst ,  Gunnar Krause ,  Justus Kuhn ,  Jens Lüpke ,  Peter Poechmüller ,  Jochen Mueller ,  Michael Schittenhelm

    IPC分类号： G11C29/00

    CPC分类号： G11C29/48

    摘要： Test circuit for testing a synchronous memory circuit having a frequency multiplication circuit which multiplies a clock frequency of a low-frequency clock signal received from an external test unit by a particular frequency multiplication factor a test data generator which produces test data on the basis of data control signals received from the external test unit and outputs them to a data output driver a first signal delay circuit for delaying the test data which are output by the test data generator by an adjustable first delay time, a second signal delay circuit for delaying data which are read out of the synchronous memory circuit and are received by a data input driver in the test circuit by an adjustable second delay time, and having a data comparison circuit which compares the test data produced by the test data generator with the data read out of the memory circuit and, on the basis of the comparison result, outputs an indicator signal to the external test unit which indicates whether the synchronous memory circuit to be tested is operable.

    摘要翻译： 用于测试具有倍频电路的同步存储电路的测试电路，该倍频电路将从外部测试单元接收的低频时钟信号的时钟频率乘以特定的倍频因子，该测试数据生成器基于数据产生测试数据 从外部测试单元接收的控制信号并将它们输出到数据输出驱动器第一信号延迟电路，用于将由测试数据发生器输出的测试数据延迟可调节的第一延迟时间;第二信号延迟电路，用于延迟数据， 从同步存储器电路中读出并由测试电路中的数据输入驱动器接收可调节的第二延迟时间，并具有数据比较电路，该数据比较电路将由测试数据发生器产生的测试数据与从 存储器电路，并且基于比较结果，向指示的外部测试单元输出指示符信号 s被测试的同步存储器电路是否可操作。

    System for testing fast integrated digital circuits, in particular semiconductor memory modules
    9.
    发明授权
    System for testing fast integrated digital circuits, in particular semiconductor memory modules 失效
    用于测试快速集成数字电路的系统，特别是半导体存储器模块

    公开(公告)号：US06721904B2

    公开(公告)日：2004-04-13

    申请号：US09907693

    申请日：2001-07-18

    申请人： Wolfgang Ernst ,  Gunnar Krause ,  Justus Kuhn ,  Jens Lüpke ,  Jochen Müller ,  Peter Pöchmüller ,  Michael Schittenhelm

    发明人： Wolfgang Ernst ,  Gunnar Krause ,  Justus Kuhn ,  Jens Lüpke ,  Jochen Müller ,  Peter Pöchmüller ,  Michael Schittenhelm

    IPC分类号： H02H305

    CPC分类号： G11C29/12015 ,  G11C29/48 ,  G11C29/56012

    摘要： The invention relates to a system for testing fast integrated digital circuits, in particular semiconductor modules, such as for example SDRAMs. In order to achieve the necessary chronological precision in the testing even of DDR-SDRAMs, with at the same time the high degree of parallelism of the test system required for mass production, an additional semiconductor circuit module (BOST module) is inserted into the signal path between a standard testing device and the SDRAM to be tested. This additional module is set up so as to multiply the relatively slow clock frequency of the conventional testing device, and to determine the signal sequence for control signals, addresses, and data background with which the SDRAM module is tested, dependent on signals of the testing device and also on register contents, programmed before the test, in the BOST module.

    摘要翻译： 本发明涉及一种用于测试快速集成数字电路，特别是半导体模块（例如SDRAM）的系统。 为了在DDR-SDRAM的测试中实现必要的按时间顺序的精度，同时大规模生产所需的测试系统的高度并行性，将额外的半导体电路模块（BOST模块）插入到信号中 标准测试设备和要测试的SDRAM之间的路径。 该附加模块被设置为乘以常规测试设备的相对较慢的时钟频率，并且根据测试信号来确定用于测试SDRAM模块的控制信号，地址和数据背景的信号序列 设备以及在测试前编程的寄存器内容，在BOST模块中。