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1、第十五章第十五章校驗(yàn) PCB設(shè)計(jì) 內(nèi)容回顧上章主要介紹了元件定位的三種方法:手工定位元件 自動(dòng)定位元件 智能自動(dòng)定位元件學(xué)習(xí)目標(biāo)學(xué)會(huì)用DRC對(duì)PCB板進(jìn)行設(shè)計(jì)規(guī)則檢查(Design Rule Check)主要是學(xué)會(huì)如何設(shè)置和運(yùn)行DRC設(shè)置和運(yùn)行DRC打開(kāi)PCB文件執(zhí)行Tools/DesignRuleCheck命令,彈出對(duì)話框 DesignRuleCheck對(duì)話框Report選項(xiàng)卡用于設(shè)置以報(bào)表形式生成規(guī)則檢查結(jié)果的各個(gè)選項(xiàng)On-line選項(xiàng)卡用于設(shè)置以在線方式檢查規(guī)則的各個(gè)選項(xiàng) DesignRuleCheck對(duì)話框Report選項(xiàng)卡有如下幾個(gè)區(qū)域:RoutingRules區(qū)域(布線規(guī)則)Man
2、ufacturingRules區(qū)域(制造規(guī)則)HighSpeedRules區(qū)域(高速規(guī)則)Options區(qū)域(選項(xiàng))DesignRuleCheck對(duì)話框Report選項(xiàng)卡 ON-LINE選項(xiàng)卡 RoutingRules區(qū)域ManufacturingRules區(qū)域HighSpeedRules區(qū)域Options區(qū)域DesignRuleCheck對(duì)話框RoutingRules區(qū)域,檢查一般性的設(shè)計(jì)規(guī)則:ClearanceConstraints(安全間距檢查)Max/MinWidthConstraints(導(dǎo)線寬度檢查)ShortCircuitConstraints(短路檢查)Un-RoutedNet
3、Constraints(沒(méi)有完成布線的網(wǎng)絡(luò)進(jìn)行檢查)SMDToCornerConstraints(走線拐彎處與SMD的距離檢查)SMDNeckDownConstraints(SMD的瓶頸限制檢查)SMDToPlaneConstraints(SMD到地電層的距離的限制檢查)DesignRuleCheck對(duì)話框ManufacturingRules區(qū)域,檢查與制作電路板有關(guān)的設(shè)置MinimunAnnularRing(圓環(huán)寬度檢查)AcuteAngle(尖角檢查)Max/MinHoleSize(打孔尺寸檢查)UnconnectedPins(懸空針腳檢查)LayerPairs(層對(duì)規(guī)則檢查)Testpo
4、intStyle(測(cè)試點(diǎn)風(fēng)格檢查)TestpointUsage(測(cè)試點(diǎn)用法檢查)DesignRuleCheck對(duì)話框HighSpeedRules區(qū)域,對(duì)高頻規(guī)則進(jìn)行檢查ParallelSegmentConstraints(平行布線檢查)Max/MinLengthConstraints(網(wǎng)絡(luò)長(zhǎng)度檢查)MatchedLengthConstraints(等線調(diào)整檢查)DaisyChainStubConstraints(分支線路的長(zhǎng)度檢查)MaximumViaCount(導(dǎo)孔數(shù)檢查)ViasUnderSMDPads(SMD焊點(diǎn)中放置導(dǎo)孔檢查)DesignRuleCheck對(duì)話框OPTIONS區(qū)域Cre
5、ateReportFile項(xiàng),在規(guī)則檢查完畢后生成檢查報(bào)告CreateViolations項(xiàng),在電路板里檢查出違反規(guī)則的地方,用高亮度綠色表示出來(lái)Sub-NetDetails項(xiàng),對(duì)設(shè)置的子網(wǎng)絡(luò)一起檢查 設(shè)置信號(hào)檢查 單擊按鈕 ,在彈出的信號(hào)檢查對(duì)話框中對(duì)要檢查的信號(hào)進(jìn)行設(shè)置 On-line選項(xiàng)卡對(duì)設(shè)計(jì)規(guī)則的在線檢查進(jìn)行相應(yīng)設(shè)置 與Report選項(xiàng)卡的設(shè)置基本相同在手工布線過(guò)程中,可以讓DRC在后臺(tái)運(yùn)行,實(shí)時(shí)的進(jìn)行設(shè)計(jì)規(guī)則檢查 運(yùn)行檢查單擊對(duì)話框的RunDRC按鈕,系統(tǒng)即自動(dòng)執(zhí)行設(shè)計(jì)規(guī)則檢查 如果在圖15-1中選擇了CreateReport選項(xiàng),系統(tǒng)在進(jìn)行檢查后,將自動(dòng)產(chǎn)生一個(gè)檢查結(jié)果報(bào)告至此,設(shè)置運(yùn)行DRC全部完成 小 結(jié) 本章詳細(xì)介紹了對(duì)PCB板進(jìn)行DRC(Design Rule Check)的設(shè)置和運(yùn)行方法,希望讀者熟練掌握 謝謝大家!謝謝觀看/歡迎下載BY FAITH I MEAN A VISION OF GOOD ONE CHERISHES AND THE ENTHUSIASM THAT PUSHES ONE TO SEEK ITS FULFILLMENT REGARDLESS OF OBSTACLES.BY FAITH I BY FAITH