会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 6. 发明公开
    • Status indication detection device and method
    • Einrichtung und Verfahren zum Detektieren von Statusindikationen
    • EP1276028A1
    • 2003-01-15
    • EP01115751.8
    • 2001-07-09
    • Telefonaktiebolaget L M Ericsson (Publ)
    • Abendroth, TorstenFleer, Hans-Ulrich
    • G05B19/4063
    • H04L7/0012G05B19/0428G05B19/4063G05B2219/24026G05B2219/24056G05B2219/25039G05B2219/25258
    • A status indication detection apparatus (SIDM) comprises an input storage stage (INS), an intermediate storage stage (ISS) and an output storage stage (OSS). Status indications (IN_STATUS) are input into the input register (INM) of the input stage (INS) and are shifted to the intermediate and to the output stage (ISS; OSS). The input and intermediate storage stages operate with a first reference clock (CLK_A) in a first clock domain (A) whilst the output storage stage operates with a different second reference clock (CLK_B) in the second clock domain (B). In accordance with the invention a reading out of the intermediate register (INT) of the intermediate stage (ISS) is only possible during the generation of a hold signal (LOCK) which keeps a current status indication in the intermediate storage stage (ISS) and blocks a transfer of a new status indication from the input stage (INS). Since the hold signal (LOCK) duration covers at lest one second clock reference period, a read out pulse (STROBE) can be placed within the hold signal duration (LOCKL). Thus, even at different phase and /or frequency relationships between the first and second reference clock (CLK_A, CLK_B) a metastability in the output register (ORM) can be avoided and no status indications output from the hardware device (HW) get lost.
    • 状态指示检测装置(SIDM)包括输入存储级(INS),中间存储级(ISS)和输出存储级(OSS)。 状态指示(IN_STATUS)被输入到输入级(INS)的输入寄存器(INM),并被转移到中间和输出级(ISS; OSS)。 输入和中间存储级在第一时钟域(A)中以第一参考时钟(CLK_A)操作,而输出存储级在第二时钟域(B)中以不同的第二参考时钟(CLK_B)操作。 根据本发明,中间级(ISS)的中间寄存器(INT)的读出仅在生成在中间存储级(ISS)中保持当前状态指示的保持信号(LOCK)和 阻止来自输入级(INS)的新状态指示的传送。 由于保持信号(LOCK)持续时间至少覆盖一个第二时钟参考周期,读出脉冲(STROBE)可以被置于保持信号持续时间(LOCKL)内。 因此,即使在第一和第二参考时钟(CLK_A,CLK_B)之间的不同相位和/或频率关系下,也可以避免输出寄存器(ORM)中的亚稳态,并且不会从硬件设备(HW)输出的状态指示丢失。