Memory chip of which the general purpose port can be used as jtag port
    110.
    发明专利
    Memory chip of which the general purpose port can be used as jtag port 审中-公开
    一般用途端口可用作JTAG端口的内存芯片

    公开(公告)号:JP2010160895A

    公开(公告)日:2010-07-22

    申请号:JP2010029868

    申请日:2010-02-15

    CPC classification number: G01R31/318533

    Abstract: PROBLEM TO BE SOLVED: To provide a memory chip of which the general purpose port can be used as a JTAG port.
    SOLUTION: The memory chip which uses a multi-pin port as the JTAG port, is provided with a JTAG controller, at least one internal block, and composition unit, and one four-pins of the multi-pin port of the chip is selectively composed by the composition unit, and the JTAG data are transmitted to the JTAG controller or non-JTAG data are transmitted to at least one internal block. The composition unit can permanently or changeably composed in general. For example, the composition unit which can be changed, is a volatile memory (VM) composition unit or it can be product term output of programmable logic device (PLD).
    COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题:提供通用端口可以用作JTAG端口的存储器芯片。

    解决方案:使用多针端口作为JTAG端口的存储器芯片设置有JTAG控制器,至少一个内部块和组合单元,以及多针端口的一个四针 芯片由组合单元选择性地组成,并且JTAG数据被发送到JTAG控制器,或者非JTAG数据被发送到至少一个内部块。 组合单元可以永久地或可变地组成。 例如,可以改变的组合单元是易失性存储器(VM)组成单元,或者它可以是可编程逻辑器件(PLD)的产品术语输出。 版权所有(C)2010,JPO&INPIT

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