Serial data input/output method and apparatus
    1.
    发明授权
    Serial data input/output method and apparatus 失效
    串行数据输入/输出方法和装置

    公开(公告)号:US5687179A

    公开(公告)日:1997-11-11

    申请号:US415121

    申请日:1995-03-29

    CPC分类号: G01R31/318558 G11C29/32

    摘要: A serial scan path communication architecture includes a plurality of circuits (30), some of which may include a memory (36). A memory access controller (38) is included on circuits with a memory (36) such that serial data may be written to and written from the memories without having to repetitively cycle through multiple shift operations.

    摘要翻译: 串行扫描路径通信架构包括多个电路(30),其中一些电路可以包括存储器(36)。 存储器访问控制器(38)包括在具有存储器(36)的电路上,使得串行数据可以被写入存储器并从存储器写入,而不必重复地循环通过多个移位操作。

    Event qualified test architecture
    2.
    发明授权
    Event qualified test architecture 失效
    事件合格测试架构

    公开(公告)号:US5623500A

    公开(公告)日:1997-04-22

    申请号:US542746

    申请日:1995-10-13

    CPC分类号: G01R31/318555 G06F2201/86

    摘要: An event qualification architecture comprises event qualification cells (24) having an internal memory for detecting qualification events. The event qualification cells (24) output a signal indicating when a match has occurred, which is interpreted by an event qualification module (22). The event qualification module controls the test circuitry which may include test cell registers (14, 16) and test memory (28). A number of protocols are provided which can be designed into a circuit to provide the timing and control required to activate test logic in the circuit during normal system operation.

    摘要翻译: 事件鉴定架构包括具有用于检测资格事件的内部存储器的事件鉴定单元(24)。 事件鉴定单元(24)输出指示何时发生匹配的信号,由事件鉴定模块(22)解释。 事件鉴定模块控制可以包括测试单元寄存器(14,16)和测试存储器(28)的测试电路。 提供了许多协议,其可以被设计成电路以提供在正常系统操作期间激活电路中的测试逻辑所需的定时和控制。

    Integrated test circuit
    3.
    发明授权
    Integrated test circuit 失效
    测试过程和在IC上形成的测试单元

    公开(公告)号:US06304987B1

    公开(公告)日:2001-10-16

    申请号:US09521320

    申请日:2000-03-09

    IPC分类号: G01R3128

    摘要: A test cell (12) provides boundary scan testing in an integrated circuit (10). The test cell (12) comprises two memories, a flip-flop (24) and a latch (26), for storing test data. A first multiplexer (22) selectively connects one of a plurality of inputs to the flip-flop (24). The input of the latch (26) is connected to output of the flip-flop (24). The output of the latch (26) is connected to one input of a multiplexer (28), the second input to the multiplexer (28) being a data input (DIN) signal. A control bus (17) is provided for controlling the multiplexers (22, 28), flip-flop (24) and latch (26). The test cell allows input data to be observed and output data to be controlled simultaneously.

    摘要翻译: 测试单元(12)在集成电路(10)中提供边界扫描测试。 测试单元(12)包括用于存储测试数据的两个存储器,触发器(24)和锁存器(26)。 第一多路复用器(22)选择性地将多个输入中的一个连接到触发器(24)。 锁存器(26)的输入端连接到触发器(24)的输出端。 锁存器(26)的输出连接到多路复用器(28)的一个输入端,多路复用器(28)的第二输入端是数据输入(DIN)信号。 控制总线(17)用于控制多路复用器(22,28),触发器(24)和锁存器(26)。 测试单元允许观察输入数据并同时控制输出数据。

    IC with test cells having separate data and test paths
    4.
    发明授权
    IC with test cells having separate data and test paths 失效
    IC测试单元具有单独的数据和测试路径

    公开(公告)号:US6081916A

    公开(公告)日:2000-06-27

    申请号:US826310

    申请日:1997-03-25

    摘要: A test cell (12) provides boundary scan testing in an integrated circuit (10). The test cell (12) comprises two memories, a flip-flop (24) and a latch (26), for storing test data. A first multiplexer (22) selectively connects one of a plurality of inputs to the flip-flop (24). The input of the latch (26) is connected to output of the flip-flop (24). The output of the latch (26) is connected to one input of a multiplexer (28), the second input to the multiplexer (28) being a data input (DIN) signal. A control bus (17) is provided for controlling the multiplexers (22, 28), flip-flop (24) and latch (26). The test cell allows input data to be observed and output data to be controlled simultaneously.

    摘要翻译: 测试单元(12)在集成电路(10)中提供边界扫描测试。 测试单元(12)包括用于存储测试数据的两个存储器,触发器(24)和锁存器(26)。 第一多路复用器(22)选择性地将多个输入中的一个连接到触发器(24)。 锁存器(26)的输入端连接到触发器(24)的输出端。 锁存器(26)的输出连接到多路复用器(28)的一个输入端,多路复用器(28)的第二输入端是数据输入(DIN)信号。 控制总线(17)用于控制多路复用器(22,28),触发器(24)和锁存器(26)。 测试单元允许观察输入数据并同时控制输出数据。

    Enhanced test circuit
    5.
    发明授权
    Enhanced test circuit 失效
    增强测试电路

    公开(公告)号:US5084874A

    公开(公告)日:1992-01-28

    申请号:US542665

    申请日:1990-06-25

    IPC分类号: G01R31/3185

    摘要: A test cell (12) provides boundary scan testing in an integrated circuit (10). The test cell (12) comprises two memories, a flip-flop (24) and a latch (26), for storing test data. A first multiplexer (22) selectively connects one of a plurality of inputs to the flip-flop (24). The input of the latch (26) is connected to output of the flip-flop (24). The output of the latch (26) is connected to one input of a multiplexer (28), the second input to the multiplexer (28) being a data input (DIN) signal. A control bus (17) is provided for controlling the multiplexers (22, 28), flip-flop (24) and latch (26). The test cell allows input data to be observed and output data to be controlled simultaneously.

    摘要翻译: 测试单元(12)在集成电路(10)中提供边界扫描测试。 测试单元(12)包括用于存储测试数据的两个存储器,触发器(24)和锁存器(26)。 第一多路复用器(22)选择性地将多个输入中的一个连接到触发器(24)。 锁存器(26)的输入端连接到触发器(24)的输出端。 锁存器(26)的输出连接到多路复用器(28)的一个输入端,多路复用器(28)的第二输入端是数据输入(DIN)信号。 控制总线(17)用于控制多路复用器(22,28),触发器(24)和锁存器(26)。 测试单元允许观察输入数据并同时控制输出数据。

    IC test cell with memory output connected to input multiplexer
    6.
    发明授权
    IC test cell with memory output connected to input multiplexer 失效
    具有存储器输出的IC测试单元连接到输入多路复用器

    公开(公告)号:US06813738B2

    公开(公告)日:2004-11-02

    申请号:US10280980

    申请日:2002-10-25

    IPC分类号: G01R3128

    摘要: A test cell (12) provides boundary scan testing in an integrated circuit (10). The test cell (12) comprises two memories, a flip-flop (24) and a latch (26), for storing test data. A first multiplexer (22) selectively connects one of a plurality of inputs to the flip-flop (24). The input of the latch (26) is connected to output of the flip-flop (24). The output of the latch (26) is connected to one input of a multiplexer (28), the second input to the multiplexer (28) being a data input (DIN) signal. A control bus (17) is provided for controlling the multiplexers (22, 28), flip-flop (24) and latch (26). The test cell allows input data to be observed and output data to be controlled simultaneously.

    摘要翻译: 测试单元(12)在集成电路(10)中提供边界扫描测试。 测试单元(12)包括用于存储测试数据的两个存储器,触发器(24)和锁存器(26)。 第一多路复用器(22)选择性地将多个输入中的一个连接到触发器(24)。 锁存器(26)的输入端连接到触发器(24)的输出端。 锁存器(26)的输出连接到多路复用器(28)的一个输入端,多路复用器(28)的第二输入端是数据输入(DIN)信号。 控制总线(17)用于控制多路复用器(22,28),触发器(24)和锁存器(26)。 测试单元允许观察输入数据并同时控制输出数据。

    Data communication interface with memory access controller
    7.
    发明授权
    Data communication interface with memory access controller 失效
    数据通信接口与存储器访问控制器

    公开(公告)号:US6085344A

    公开(公告)日:2000-07-04

    申请号:US935751

    申请日:1997-09-23

    CPC分类号: G01R31/318558 G11C29/32

    摘要: A serial scan path communication architecture includes a plurality of circuits (30), some of which may include a memory (36). A memory access controller (38) is included on circuits with a memory (36) such that serial data may be written to and written from the memories without having to repetitively cycle through multiple shift operations.

    摘要翻译: 串行扫描路径通信架构包括多个电路(30),其中一些电路可以包括存储器(36)。 存储器访问控制器(38)包括在具有存储器(36)的电路上,使得串行数据可以被写入存储器并从存储器写入,而不必重复地循环通过多个移位操作。

    Global event qualification system
    8.
    发明授权
    Global event qualification system 失效
    全球事件资格体系

    公开(公告)号:US4857835A

    公开(公告)日:1989-08-15

    申请号:US117114

    申请日:1987-11-05

    CPC分类号: G01R31/318558

    摘要: Test logic may be included in the design of an integrated circuit (IC) to facilitate testability. In most instances, an IC's test logic can only be activated while the IC, or logic sections within the IC, are placed in a non-functional test mode. The present invention is directed toward an event qualification structure providing the timing and control required to activate an IC's test logic during normal functional operation.

    Integrated test circuit
    9.
    发明授权
    Integrated test circuit 失效
    集成测试电路

    公开(公告)号:US5602855A

    公开(公告)日:1997-02-11

    申请号:US542236

    申请日:1995-10-12

    摘要: A test cell (12) provides boundary scan testing in an integrated circuit (10). The test cell (12) comprises two memories, a flip-flop (24) and a latch (26), for storing test data. A first multiplexer (22) selectively connects one of a plurality of inputs to the flip-flop (24). The input of the latch (26) is connected to output of the flip-flop (24). The output of the latch (26) is connected to one input of a multiplexer (28), the second input to the multiplexer (28) being a data input (DIN) signal. A control bus (17) is provided for controlling the multiplexers (22, 28), flip-flop (24) and latch (26). The test cell allows input data to be observed and output data to be controlled simultaneously.

    摘要翻译: 测试单元(12)在集成电路(10)中提供边界扫描测试。 测试单元(12)包括用于存储测试数据的两个存储器,触发器(24)和锁存器(26)。 第一多路复用器(22)选择性地将多个输入中的一个连接到触发器(24)。 锁存器(26)的输入端连接到触发器(24)的输出端。 锁存器(26)的输出连接到多路复用器(28)的一个输入端,多路复用器(28)的第二输入端是数据输入(DIN)信号。 控制总线(17)用于控制多路复用器(22,28),触发器(24)和锁存器(26)。 测试单元允许观察输入数据并同时控制输出数据。

    Testing buffer/register
    10.
    发明授权
    Testing buffer/register 失效
    测试缓冲区/寄存器

    公开(公告)号:US5495487A

    公开(公告)日:1996-02-27

    申请号:US197573

    申请日:1994-02-14

    CPC分类号: G01R31/318541 G06F11/27

    摘要: A test cell (12) provides boundary scan testing in an integrated circuit (10). The test cell (12) comprises two memories, a flip-flop (24) and a latch (26), for storing test data. A first multiplexer (22) selectively connects one of a plurality of inputs to the flip-flop (24). The input of the latch (26) is connected to output of the flip-flop (24). The output of the latch (26) is connected to one input of a multiplexer (28), the second input to the multiplexer (28) being a data input (DIN) signal. A control bus (17) is provided for controlling the multiplexers (22, 28), flip-flop (24) and latch (26). The test cell allows input data to be observed and output data to be controlled simultaneously.

    摘要翻译: 测试单元(12)在集成电路(10)中提供边界扫描测试。 测试单元(12)包括用于存储测试数据的两个存储器,触发器(24)和锁存器(26)。 第一多路复用器(22)选择性地将多个输入中的一个连接到触发器(24)。 锁存器(26)的输入端连接到触发器(24)的输出端。 锁存器(26)的输出连接到多路复用器(28)的一个输入端,多路复用器(28)的第二输入端是数据输入(DIN)信号。 控制总线(17)用于控制多路复用器(22,28),触发器(24)和锁存器(26)。 测试单元允许观察输入数据并同时控制输出数据。