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    • 94. 发明专利
    • Programmable high-speed input/output interface
    • 可编程高速输入/输出接口
    • JP2010141901A
    • 2010-06-24
    • JP2010001545
    • 2010-01-06
    • Altera Corpアルテラ コーポレイションAltera Corporation
    • WANG BONNIE ISUNG CHIAKANGHUANG JOSEPHNGUYEN KHAIPAN PHILIP
    • G06F3/00H03K19/173G06F13/38H01L21/82H01L21/822H01L27/04H03K19/0175H03K19/177
    • H03K19/17744H03K19/0175H03K19/017509H03K19/017581H03K19/1774H03K19/17788
    • PROBLEM TO BE SOLVED: To provide methods and apparatus which achieve both high-speed and low-speed, flexible inputs and outputs. SOLUTION: An input/output structure having a high-speed input, a high-speed output, a low- or moderate-speed input, and a low- or moderate-speed output is provided. One of the input and output circuits is selected and the other is deselected. The high-speed input and output circuits are comparatively simple, for example, they have only a clear signal for control line input and are able to interface with low-speed circuitry inside the core of an integrated circuit. The low- or moderate-speed input and output circuits are more flexible, for example, they have preset, enable and clear signals for control line input and are able to support JTAG boundary testing. These parallel high- and low-speed circuits are user selectable such that the input/output structure is optimized between speed and functionality depending on the requirements of the application. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供实现高速和低速,灵活的输入和输出的方法和设备。

      解决方案:提供具有高速输入,高速输出,低速或中速输入以及低速或中速输出的输入/输出结构。 选择其中一个输入和输出电路,另一个被取消选择。 高速输入和输出电路比较简单,例如,它们只具有用于控制线路输入的清晰信号,并且能够与集成电路核心内的低速电路接口。 低速或中速输入和输出电路更灵活,例如,它们具有用于控制线路输入的预设,使能和清除信号,并且能够支持JTAG边界测试。 这些并行高速和低速电路是用户可选择的,以便根据应用的要求,在速度和功能之间优化输入/输出结构。 版权所有(C)2010,JPO&INPIT