電子書(shū)-RTL Design Style Guide for Verilog HDL540頁(yè)A FF having a fixed input value is generated from the description in the upper portion of
Example 2-21. In this case, ’0’ is output when the reset signal is asynchronously input,
and ’1’ is output when the START signal rises. Therefore, the FF data input is fixed at
the power supply, since the typical value ’1’ is output following the rise of the START
signal.
When FF input values are fixed, the fixed inputs become untestable and the fault detection rate drops. When implementing a scan design and converting to a scan FF, the scan
may not be executed properl not be executed properly, so such descriptions , so such descriptions are not are not recommended. recommended.[1] As in the lower
part of Example 2-21, be sure to construct a synchronous type of circuit and ensure that
the clock signal is input to the clock pin of the FF.
Other than the sample shown in Example 2-21, there are situations where for certain
control signals, those that had been switched due to the conditions of an external input
will no longer need to be switched, leaving only a FF. If logic exists in a lower level and a
fixed value is input from an upper level, the input value of the FF may also end up being
fixed as the result of OPTIMIZATION with logic synthesis tools. In a situation like this, while
perhaps difficult to completely eliminate, the problem should be avoided as much as possible.
標(biāo)簽：
RTL
verilog hdl
上傳時(shí)間：
2022-03-21
上傳用戶：canderile
本文設(shè)計(jì)了一種磁致伸縮位移傳感器,介紹了該磁致伸縮位移傳感器的測(cè)量原理,通過(guò)結(jié)構(gòu)優(yōu)化設(shè)計(jì)提高了儀器的性能,詳述了硬件電路設(shè)計(jì)及實(shí)現(xiàn)方法,完成了軟件設(shè)計(jì),實(shí)現(xiàn)了高壓充電、問(wèn)詢脈沖加載、時(shí)間測(cè)量及濾波等功能,并通過(guò)實(shí)驗(yàn)對(duì)其性能進(jìn)行了驗(yàn)證。所研制的磁致伸縮位移傳感器具有測(cè)量精度高、長(zhǎng)期穩(wěn)定性好等特點(diǎn),滿足了大量程、高精度、惡劣環(huán)境等測(cè)量的要求。A kind of sensor based on magnetostrictive principle is designed.The measuring principle of the magnetostrictive displacement sensor is introduced,the performance of the instrument is improved by the structural OPTIMIZATION design,and introduced the hardware circuit design and the realization method,completed the software design,realized the functions of the high voltage charging,inquiries pulse loading,time measurement and filtering,and its performance is verified through the experiment.The magnetostrictive displacement sensor has the characteristics of high measuring precision.The sensor meets the requirements of large range,high precision,poor environment and so on.
標(biāo)簽：
位移傳感器
上傳時(shí)間：
2022-04-06
上傳用戶：
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標(biāo)簽：
紅外線
波形
測(cè)系統(tǒng)
編碼
上傳時(shí)間：
2013-07-21
上傳用戶：eeworm
