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    • 2. 发明授权
    • Method and apparatus for memory dynamic burn-in and test
    • 用于记忆动态老化和测试的方法和装置
    • US5375091A
    • 1994-12-20
    • US163803
    • 1993-12-08
    • Robert W. Berry, Jr.Bernd K. F. KoenemannWilliam J. Scarpero, Jr.Philip G. Shephard, IIIKenneth D. WagnerGulsun Yasar
    • Robert W. Berry, Jr.Bernd K. F. KoenemannWilliam J. Scarpero, Jr.Philip G. Shephard, IIIKenneth D. WagnerGulsun Yasar
    • G11C29/10G11C29/50G11C13/00
    • G11C29/10G11C29/50
    • A memory embedded in a integrated processor chip is dynamically stressed tested by repeatedly writing a test pattern to the data locations of the memory in which a high percentage of the memory cells are sequentially written with complementary data in order to create a high stress on the memory devices. The test pattern is generated as a function of the number of address locations of the memory and the number of data bits of a memory data word. The test pattern is rotated each time the memory is addressed. The test pattern preferably has a contiguous group of digits with the number of digits in the contiguous group being a function of the number of address locations and the number of data bits in the memory word. The memory data input register is configured as a recirculating loop and additional dummy bits are added to provide recirculating loops longer than the data input register. A plurality of independent circulating loops may be created in the data input register or in combination with a number of dummy register bits.
    • 嵌入在集成处理器芯片中的存储器通过重复地将测试图案写入存储器的数据位置而被动态地受到压力测试,其中高百分比的存储器单元被顺序地写有补充数据,以便在存储器上产生高应力 设备。 作为存储器的地址位置的数量和存储器数据字的数据位的数量的函数产生测试图案。 每次存储器寻址时,测试模式都会旋转。 测试图案优选地具有连续的数字组,连续组中的位数是作为存储器字中的地址位置数和数据位数的函数。 存储器数据输入寄存器被配置为循环回路,并添加额外的虚拟位以提供比数据输入寄存器更长的再循环回路。 可以在数据输入寄存器中或与多个虚拟寄存器位组合地产生多个独立的循环回路。
    • 3. 发明授权
    • Field programmable gate arrays using semi-hard multicell macros
    • 使用半硬多核宏的现场可编程门阵列
    • US5761078A
    • 1998-06-02
    • US618060
    • 1996-03-21
    • Christine Marie FullerScott Whitney GouldSteven Paul HartmanEric Ernest MillhamGulsun Yasar
    • Christine Marie FullerScott Whitney GouldSteven Paul HartmanEric Ernest MillhamGulsun Yasar
    • G06F17/50
    • G06F17/5068
    • A computer implemented method for the automated placement and routing in the design of field programmable gate arrays achieves optimal timing. In a library of primitives and macros from which a designer may choose to implement a given circuit design, at least some of said macros are "semi-hard" macros where direct connections and relative placements are specified while local bus routing is requested in a manner that does not restrict macro placement. A logical netlist containing references to macros and how to connect them together to perform a logical function is first created. The logical netlist is then translated to a physical netlist using a mapper function. This physical netlist for the semi-hard macros specifies what is to be connected but not how. The best place to put each macro on the field programmable gate array is found using a placer function. The placer function thus determines an absolute position of the macros. Pre-defined macro direct connections are routed using a router function. The router function determines an optimal path to connect the semi-hard macros. Finally, a bitstream is generated from placement and routing information developed by the placer and router functions to program the field programmable gate array to perform the netlist logical function.
    • 用于现场可编程门阵列设计中的自动放置和布线的计算机实现方法实现了最佳的定时。 在设计者可以选择实现给定电路设计的原语和宏的库中,至少一些所述宏是“半硬”宏,其中指定了直接连接和相对放置,同时以某种方式请求本地总线路由 这不会限制宏放置。 首先创建包含对宏的引用以及如何将它们连接在一起以执行逻辑功能的逻辑网表。 然后使用映射器函数将逻辑网表转换为物理网表。 这个半硬宏的物理网表指定了要连接的内容,但不是如何。 使用放置功能可以找到将每个宏放在现场可编程门阵列上的最佳位置。 因此,放置函数决定宏的绝对位置。 使用路由器功能路由预定义的宏直连。 路由器功能确定连接半硬宏的最佳路径。 最后,由放置器和路由器开发的放置和路由信息生成比特流,以对现场可编程门阵列进行编程以执行网表逻辑功能。