发明名称 |
Method and apparatus for a robust embedded interface |
摘要 |
A method is provided for operating an interface between a first unit and a second unit supplying its data. The method includes switching control between LSSD_B and LSSD_C clocks and system clock (CLK) to provide a test mode of operation and a functional mode of operation to optimize setup and hold times depending on conditions under which the unit is operating. In the test mode, data is launched by the LSSD_C clock. In the functional mode, the data is launched by the system clock (CLK) to RAM. A method is also provided to determine which memory inputs should use a circuit that provides adequate setup and hold margins. |
申请公布号 |
US8239715(B2) |
申请公布日期 |
2012.08.07 |
申请号 |
US20080144686 |
申请日期 |
2008.06.24 |
申请人 |
EUSTIS STEVEN M.;GORMAN KEVIN W.;LACKEY DAVID E.;OUELLETTE MICHAEL R.;INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
EUSTIS STEVEN M.;GORMAN KEVIN W.;LACKEY DAVID E.;OUELLETTE MICHAEL R. |
分类号 |
G01R31/28 |
主分类号 |
G01R31/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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