{var%20f='http://v.t.sina.com.cn/share/share.php?appkey=1515056452',u=z||d.location,p=['&url=',e(u),'&title=',e(t||d.title),'&source=',e(r),'&sourceUrl=',e(l),'&content=',c||'gb2312','&pic=',e(p||'')].join('');function%20a(){if(!window.open([f,p].join(''),'mb',['toolbar=0,status=0,resizable=1,width=440,height=430,left=',(s.width-440)/2,',top=',(s.height-430)/2].join('')))u.href=[f,p].join('');};if(/Firefox/.test(navigator.userAgent))setTimeout(a,0);else%20a();})(screen,document,encodeURIComponent,'','','https://www.xiaopingtou.cn/data/attach/logo/logo.png', '推荐 rousong1989 的问题《VGA椹卞姩鎺ュ彛鏃跺簭璁捐涔?寤虹珛鍜屼繚鎸?..》','https://www.xiaopingtou.net/q-173436.html','页面编码gb2312|utf-8默认gb2312'));){kind=link}
VGA椹卞姩鎺ュ彛鏃跺簭璁捐涔?寤虹珛鍜屼繚鎸佹椂闂村垎鏋?/strong>鏈枃鑺傞€夎嚜鐗规潈鍚屽鐨勫浘涔︺€奆PGA璁捐瀹炴垬婕旂粌锛堥€昏緫绡囷級銆?/strong>閰嶅渚嬬▼涓嬭浇閾炬帴锛?/strong>http://pan.baidu.com/s/1pJ5bCtt 涓嬮潰鎴戜滑鍙互绠€鍗曠殑鏉ュ垎鏋愪竴涓嬫暟鎹殑寤虹珛鏃堕棿鍜屼繚鎸佹椂闂村簲璇ユ弧瓒虫€庢牱鐨勫叧绯绘墠鑳戒繚璇佽鏃堕挓lcd_clk绋冲畾鐨勯攣瀛樺埌ADV7123鑺墖涓€傞鍏堬紝鎴戜滑闇€瑕佹潵鐪嬬湅杩欎釜瀹炰緥鐨勬椂閽焞aunch edge鍜宭atch edge鐨勬蹇点€傚鍥?.31鎵€绀猴紝杩欐槸涓€涓簮瀵勫瓨鍣ㄥ拰鐩殑瀵勫瓨鍣ㄤ紶杈撴椂閽熶竴鑷寸殑鐞嗘兂璺緞锛屼粬浠墍瀵瑰簲鐨刲aunch edge鍜宭atch edge鐨勭ず鎰忋€傛垜浠彲浠ヨ繖涔堢悊瑙ｏ紝瀵逛簬setup鏃堕棿锛宭aunch edge鏄痩atch edge鐨勪笂涓€涓椂閽熻妭鎷嶏紝latch edge閫氬父鏄鍘婚噰鏍穕aunch edge宸茬粡閲囨牱杩囩殑鏁版嵁銆傝€屽浜巋old鏃堕棿锛宭aunch edge鍜宭atch edge閫氬父鏄悓涓€涓椂閽熸部锛宭atch edge鐨刪old鏃堕棿涓嶈鍐掔姱锛屼篃灏辨剰鍛崇潃latch edge涓嶉噰鏍峰畠鍓嶄竴鎷嶇殑鏁版嵁銆傦紙鐗规潈鍚屽锛岀増鏉冩墍鏈夛級
鍥?.31 鏃堕挓launch edge鍜宭atch edge瀵逛簬寤虹珛鏃堕棿锛屾湁鍩烘湰鐨勬椂搴忓叧绯婚渶瑕佹弧瓒筹紝鍏跺叕寮忓涓嬶細Launch edge + Tc2t + Tco + Tr2p+Tdpcb < latch edge + Tc2r - Tsu瀵逛簬淇濇寔鏃堕棿锛屾湁鍩烘湰鐨勬椂搴忓叧绯婚渶瑕佹弧瓒筹紝鍏跺叕寮忓涓嬶細Launch edge + Tc2t + Tco + Tr2p +Tdpcb> latch edge + Tc2r + Th鍓嶉潰鎴戜滑宸茬粡绾︽潫濂戒簡婧愭椂閽熷拰鐩殑鏃堕挓锛堣櫄鎷熸椂閽燂級锛屽洜姝わ紝latch edge鍜宭aunch edge閮芥槸FPGA宸茬粡鏄庣‘鐨勬椂搴忓弬鏁般€傚悓鏍风殑锛孴co銆乀c2t銆乀r2p鍜孴c2r鐨凢PGA鍐呴儴鐨勫欢鏃讹紝涔熼兘鏄疐PGA鑳藉鏈韩灏辫兘澶熺‘瀹氱殑锛屽苟涓擣PGA浼氶€氳繃璁捐鑰呯殑绾︽潫锛屾潵鎺у埗杩欎簺鍐呴儴鐨勬椂搴忓欢鏃讹紝浣垮緱鍓嶉潰缁欏嚭鐨勪袱涓熀鏈叕寮忓緱鍒版弧瓒炽€備絾鏄紝FPGA骞朵笉鐭ラ亾杩欎袱涓叕寮忎腑FPGA澶栭儴鐨勮矾寰勫欢鏃跺弬鏁帮紝鎵€浠ユ垜浠笅涓€姝ョ殑鏁版嵁璺緞绾︽潫瑕佸仛鐨勫氨鏄妸杩欎簺鍙傛暟鍛婅瘔FPGA銆俀uartus II杞欢鍐呴儴闆嗘垚鐨凾imeQuest涓殑set output delay绾︽潫鐨勫姛鑳藉氨鏄浼犻€掕繖涓俊鎭€傛垜浠笅闈㈡潵鐪嬬湅set output delay鐨勫€煎浣曡绠椼€傦紙鐗规潈鍚屽锛岀増鏉冩墍鏈夛級濡傚浘8.32鎵€绀猴紝杩欐槸Altera鐨凥andbook缁欏嚭浜唖et output delay鐨刴ax鍜宮in鍊艰绠楁柟娉曘€?nbsp;
鍥?.32 Altera瀹樻柟缁欏嚭鐨剅eg2pin鏃跺簭鍒嗘瀽妯″瀷杩欎釜璺緞涓紝output delay鍙傛暟鍊肩殑璁＄畻鍏紡濡備笅锛?/div>output delay max = dd_max + tsu_ext +(cd_altr_min - cd_ext_max)output delay min = dd_min 鈥?th_ext +(cd_altr_max 鈥?cd_ext_min)閮借鍏蜂綋闂鍏蜂綋鍒嗘瀽锛屽鏋滄垜浠笉闂潚绾㈢殏鐧斤紝渚濊懌鑺︾敾鐡㈢殑鐓ф惉杩欎釜妯″瀷鐨勫叕寮忚繘琛岃绠楋紝鎴戜滑寰€寰€瑕佺涓€榧诲瓙鐏帮紝寰堝鍙傛暟鎴戜滑鍙兘鎵句笉鍒版垨鑰呮壘閿欎簡銆傞偅涔堬紝瀵逛簬姣忎竴涓壒瀹氱殑璺緞锛屾垜浠線寰€闇€瑕佹牴鎹疄闄呮儏鍐佃繘琛岄€傚綋鐨勫彉閫氾紝涓囧彉涓嶇鍏跺畻锛宺eg2pin鐨勫垎鏋愬師鐞嗗拰瀹樻柟缁欏嚭鐨勮繖涓ā鍨嬭偗瀹氭槸涓€鑷寸殑銆備笅闈㈡垜浠彉閫氫竴涓嬶紝鐪嬬湅鎴戜滑鐨勫疄渚嬪張鏄浣曞仛鍒嗘瀽鐨勩€傦紙鐗规潈鍚屽锛岀増鏉冩墍鏈夛級
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