摘要:
A method and system for testing an electronic memory. The method includes subjecting the electronic memory to a first test condition of a predetermined set of test conditions. The method also includes testing functionality of the electronic memory, a first plurality of times, for the first test condition using a predetermined test algorithm. The method further includes checking availability of a second test condition from the predetermined set of test conditions if the functionality of the electronic memory is satisfactory. Further, the method includes testing the functionality of the electronic memory, a second plurality of times, for the second test condition using the predetermined test algorithm if the second test condition is available. Moreover, the method includes accepting the electronic memory for use in a product if the functionality of the electronic memory is satisfactory.
摘要:
A desirable number of segments for a multi-segment single error correcting (SEC) coding scheme is determined based on scrambling information for a memory. The desirable number of segments can be the minimum number of segments required to satisfy a masked write segmentation requirement and a multi-bit upset size requirement. In one aspect, the memory scrambling information can specify the different scrambling techniques employed by the memory (e.g., Input-Output (IO) cell scrambling, column scrambling, column twisting, strap distribution, etc.). Based on the scrambling information, a mapping between the logical structure and physical layout for the memory can be derived. The mapping can be used to determine the least number of segments needed to satisfy the masked write requirement and the multi-bit upset size requirement.
摘要:
A method and system for testing an electronic memory. The method includes subjecting the electronic memory to a first test condition of a predetermined set of test conditions. The method also includes testing functionality of the electronic memory, a first plurality of times, for the first test condition using a predetermined test algorithm. The method further includes checking availability of a second test condition from the predetermined set of test conditions if the functionality of the electronic memory is satisfactory. Further, the method includes testing the functionality of the electronic memory, a second plurality of times, for the second test condition using the predetermined test algorithm if the second test condition is available. Moreover, the method includes accepting the electronic memory for use in a product if the functionality of the electronic memory is satisfactory.
摘要:
A desirable number of segments for a multi-segment single error correcting (SEC) coding scheme is determined based on scrambling information for a memory. The desirable number of segments can be the minimum number of segments required to satisfy a masked write segmentation requirement and a multi-bit upset size requirement. In one aspect, the memory scrambling information can specify the different scrambling techniques employed by the memory (e.g., Input-Output (IO) cell scrambling, column scrambling, column twisting, strap distribution, etc.). Based on the scrambling information, a mapping between the logical structure and physical layout for the memory can be derived. The mapping can be used to determine the least number of segments needed to satisfy the masked write requirement and the multi-bit upset size requirement.
摘要:
A memory structural model is generated directly from memory configuration information and memory layout information in an efficient manner. Information on strap distribution is generated by analyzing configuration information of the memory and the corresponding memory layout. Information on scrambling of addresses in the memory layout is generated by programming the memory layout with physical bit patterns, extracting corresponding logical bit patterns and then analyzing the discrepancy between the physical bit patterns and the logical bit patterns. The strap distribution information and the address scrambling information are combined into the memory structural model used for designing an efficient test and repair engine.
摘要:
A memory structural model is generated directly from memory configuration information and memory layout information in an efficient manner. Information on strap distribution is generated by analyzing configuration information of the memory and the corresponding memory layout. Information on scrambling of addresses in the memory layout is generated by programming the memory layout with physical bit patterns, extracting corresponding logical bit patterns and then analyzing the discrepancy between the physical bit patterns and the logical bit patterns. The strap distribution information and the address scrambling information are combined into the memory structural model used for designing an efficient test and repair engine.
摘要:
Testing electronic memories based on fault and test algorithm periodicity. A processor unit for testing an electronic memory includes a built-in self-test (BIST) finite state machine, an address generator, a data generator, a test algorithm generation unit, a programmable test algorithm register, and a test algorithm register control unit. A memory wrapper unit for testing an electronic memory includes an operation decoder, a data comparator, and an electronic memory under test. The method includes constructing a fault periodic table having columns corresponding with test mechanisms, and rows corresponding with fault families. A first March test sequence and second March test sequence are selected according to respective fault families and test mechanisms, and applied to an electronic memory. The electronic memory under test is determined to be one of acceptable and unacceptable based on results of the first March test sequence and the second March test sequence.
摘要:
The invention relates to a connector (CON1, CON2) comprising a first enclosure (ENCL1_CON2P—1, ENCL1_CON1_P2) and at least one electrical contacting means (CE1_ou1, CE1_out—2, CP_out—1, CE1_in—1, CE1_in—2), the first enclosure (ENCL1_CON1_P1, ENCL1_CON1_P2) comprises an inlet (INL) for a first cable (CABLE1) and an outlet (OUTL) for the first cable (CABLE1), the first enclosure (ENCL1_CON1_P1, ENCL1_CON1_P2), the inlet (INL) and the outlet (OUTL) are adapted to completely enclose a first electrical connection between the at least one electrical contacting means (CE1_out—1, CE1_out—2, CP_out—1, CE1_in—1, CE1_in—2) of the connector (CON1, CON2) and at least one conductor (COND_in, COND_out) of the first cable (CABLE1). The invention further relates to an assembly (ASBY1) comprising the connector (CON1, CON2) and the first cable (CABLE1) connected to the connector (CON1, CON2).
摘要:
A Radio-Frequency (RF) waveguide comprising at least a folded sheet (3) is described, wherein the sheet comprises a first layer made of a plastic, and at least a second layer made of a electric conductive material. Furthermore a method for manufacturing such a RF waveguide plus a device to perform said method is described.
摘要:
The present invention relates to a bi-material radio frequency transmission line of cylindrical shape comprising a thin layer of highly conductive material supported by a base material wherein both materials are selected in function of the frequency of the transmitted signal and wherein the thickness of the thin layer is in a range from 1.2 to 2.4 times the depth of the skin effect at the frequency corresponding to the transmitted signal.