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鎮ㄥソ锛屾杩庝締鍒扮董搴浕瀛愬競鍫�(ch菐ng)缍�(w菐ng) 鐧婚寗 | 鍏嶈不(f猫i)娉ㄥ唺(c猫)

鏁�(sh霉)瀛楅帠鐩哥挵(hu谩n)
闁辫畝锛�10434鏅�(sh铆)闁擄細2010-12-31 16:14:27

銆�銆�鏁�(sh霉)瀛�閹栫浉鐠�(hu谩n)鏄竴绋兘浣胯几鍑轰俊铏�(h脿o)鍦ㄩ牷鐜囧拰鐩镐綅涓婅垏杓稿叆淇¤櫉(h脿o)鍚屾鐨勯浕璺�锛屽嵆绯荤当(t菕ng)閫�(j矛n)鍏ラ帠瀹氱媭鎱�(t脿i)(鎴栧悓姝ョ媭鎱�(t脿i))鍚庯紝闇囪暕鍣ㄧ殑杓稿嚭淇¤櫉(h脿o)鑸囩郴绲�(t菕ng)杓稿叆淇¤櫉(h脿o)涔嬮枔鐩稿樊鐐洪浂锛屾垨鑰呬繚鎸佺偤甯告暩(sh霉)銆傚畠鐢辨暩(sh霉)瀛楅憭鐩稿櫒銆佹暩(sh霉)瀛�婵炬尝鍣�鑸囨暩(sh霉)瀛楀鎺�鎸暕鍣�(DCO)涓夊��(g猫)鏁�(sh霉)瀛楅浕璺儴浠剁祫鎴�銆傚叾涓暩(sh霉)瀛楅憭鐩稿櫒鏈夊绋ǎ寮�锛屾ǎ寮忎笉鍚屽皪(du矛)鐠�(hu谩n)璺�ц兘鏈夊緢澶у奖闊�銆�

姒傝堪

銆�銆�闅ㄨ憲鏁�(sh霉)瀛楅浕璺妧琛�(sh霉)鐨勭櫦(f膩)灞�锛屾暩(sh霉)瀛楅帠鐩哥挵(hu谩n)鍦ㄨ(di脿o)鍒惰В瑾�(di脿o)銆侀牷鐜囧悎鎴�銆丗M 绔嬮珨鑱茶В纰�銆佸僵鑹插壇杓夋尝鍚屾銆佸湒璞¤檿鐞嗙瓑鍚勫��(g猫)鏂归潰寰楀埌浜嗗唬娉涚殑鎳�(y墨ng)鐢�銆傛暩(sh霉)瀛楅帠鐩哥挵(hu谩n)涓嶅儏鍚告敹浜嗘暩(sh霉)瀛楅浕璺彲闈犳�ч珮銆侀珨绌嶅皬銆佸児(ji脿)鏍间綆绛夊劒(y艒u)榛�(di菐n)锛岄倓瑙ｆ焙浜嗘ā鎿帠鐩哥挵(hu谩n)鐨勭洿娴侀浂榛�(di菐n)婕傜Щ銆佸櫒浠堕＝鍜屽強鏄撳彈闆绘簮鍜岀挵(hu谩n)澧冩韩搴﹁畩鍖栫瓑缂洪粸(di菐n)锛屾澶栭倓鍏锋湁灏�(du矛)闆㈡暎妯ｅ�肩殑瀵�(sh铆)鏅�(sh铆)铏曠悊鑳藉姏锛屽凡鎴愮偤閹栫浉鎶�琛�(sh霉)鐧�(f膩)灞曠殑鏂瑰悜銆傞帠鐩哥挵(hu谩n)鏄竴鍊�(g猫)鐩镐綅鍙嶉鎺у埗绯荤当(t菕ng)锛屽湪鏁�(sh霉)瀛楅帠鐩哥挵(hu谩n)涓紝鐢变簬瑾ゅ樊鎺у埗淇¤櫉(h脿o)鏄洟鏁ｇ殑鏁�(sh霉)瀛椾俊铏�(h脿o)锛岃�屼笉鏄ā鎿浕澹�锛屽洜鑰屽彈鎺х殑杓稿嚭闆诲鐨勬敼璁婃槸闆㈡暎鐨勮�屼笉鏄�ｇ簩(x霉)鐨�;姝ゅ锛岀挵(hu谩n)璺祫鎴愰儴浠朵篃鍏ㄧ敤鏁�(sh霉)瀛楅浕璺(sh铆)鐝�(xi脿n)锛屾晠鑰岄�欑ó閹栫浉鐠�(hu谩n)灏辩ū涔嬬偤鍏ㄦ暩(sh霉)瀛楅帠鐩哥挵(hu谩n)(绨�(ji菐n)绋盌PLL)銆傛暩(sh霉)瀛楅帠鐩哥挵(hu谩n)涓昏鐢辨暩(sh霉)瀛楅憭鐩稿櫒銆佸彲閫嗚▓(j矛)鏁�(sh霉)鍣�銆侀牷鐜囧垏鎻涢浕璺強N鍒嗛牷鍣ㄥ洓閮ㄥ垎绲勬垚銆傛暩(sh霉)瀛楅憭鐩稿櫒灏辨槸DPLL鐨勪富瑕佸柈鍏�銆�

鍒嗛

銆�銆�1. 瑙哥櫦(f膩)鍣ㄥ瀷鏁�(sh霉)瀛楅帠鐩哥挵(hu谩n)(FF鈥擠PLL)

銆�銆�瑭茬挵(hu谩n)璺埄鐢ㄤ竴闆欑┅(w臎n)鎱�(t脿i)瑙哥櫦(f膩)鍣ㄤ綔鏁�(sh霉)瀛楅憭鐩稿櫒锛屽叾鐙�鎱�(t脿i)鍒嗗垾鍙楄几鍏ヤ俊铏�(h脿o)鑸囨湰鍦板彈鎺ф檪(sh铆)閻樹俊铏�(h脿o)鐨勬鍚戦亷闆堕粸(di菐n)瑙哥櫦(f膩),鐢�(ch菐n)鐢熺殑缃綅鑸囧京(f霉)浣嶈剤娌栫媭鎱�(t脿i)璁婂寲涔嬮枔闁撻殧灏卞弽鏄犺憲鍏╀俊铏�(h脿o)涔嬮枔鐩镐綅瑾ゅ樊銆�

銆�銆�2. 濂堝鏂壒鍨嬫暩(sh霉)瀛楅帠鐩哥挵(hu谩n)(NR鈥擠PLL)

銆�銆�鍦ㄨ几鍏ヤ俊铏�(h脿o)閫�(j矛n)鍏ユ暩(sh霉)瀛楅憭鐩稿櫒涔嬪墠锛屽厛浠ュ濂庢柉鐗归�熺巼(鍥哄畾閫熺巼鐨勬檪(sh铆)閻樿剤娌�)閫�(j矛n)琛屾娊妯�锛岀劧鍚庡啀鑸囨湰鍦板彈鎺ф檪(sh铆)閻樹俊铏�(h脿o)閫�(j矛n)琛屾暩(sh霉)瀛楃浉涔�锛岀敘(ch菐n)鐢熸暩(sh霉)瀛楀紡鐩镐綅瑾ゅ樊銆� ?

銆�銆�3.閬庨浂妾㈡脯(c猫)寮忔暩(sh霉)瀛楅帠鐩哥挵(hu谩n)(ZC-DPLL)

銆�銆�鐠�(hu谩n)璺敤鏈湴鍙楁帶鏅�(sh铆)閻樿剤娌栧皪(du矛)杓稿叆淇¤櫉(h脿o)鐨勯亷闆堕粸(di菐n)鎶芥ǎ锛岄潪闆剁殑瀵�(sh铆)闅涙娊妯ｅ�煎ぇ灏忓氨鍙嶆槧钁楃浉浣嶈宸�锛岀敤瑭茬浉浣嶈宸締瑾�(di脿o)绡�(ji茅)鏈湴鏅�(sh铆)閻樹俊铏�(h脿o)鐨勭浉浣�銆�

銆�銆�4.瓒呭墠婊悗鍨嬫暩(sh霉)瀛楅帠鐩哥挵(hu谩n)(LL-DPLL)

銆�銆�閫欑ó閹栫浉鐠�(hu谩n)鐨勯憭鐩稿櫒灏囬�愬懆鍦版瘮杓冭几鍏ヤ俊铏�(h脿o)鑸囨湰鍦版檪(sh铆)閻樹俊铏�(h脿o)鐨勭浉浣�锛屾牴鎿�(j霉)鐩镐綅鐨勮秴鍓嶆垨婊悗杓稿嚭鐩告噳(y墨ng)鐨勮秴鍓嶆垨婊悗鑴堟矕锛岀敤璁婃彌鎴愬姞鑴堟矕鎴栨笡鑴堟矕,灏�(du矛)鎳�(y墨ng)鍦拌(di脿o)绡�(ji茅)鏈湴鏅�(sh铆)閻樼浉浣�銆�

闆昏矾绲�(ji茅)妲�(g貌u)

銆�銆�(1)瑙哥櫦(f膩)鍣ㄥ瀷閼掔浉鍣�銆備笅鍦栨槸瑭插瀷閼掔浉鍣ㄧ殑绲勬垚绀烘剰鍦�銆傜暥(d膩ng)妾㈡脯(c猫)鍒拌几鍏ヤ俊铏�(h脿o)姝ｅ悜閬庨浂榛�(di菐n)鏅�(sh铆)锛岃Ц鐧�(f膩)鍣ㄧ疆鈥�1鈥�锛岃�屾湰鍦板弮鑰冧俊铏�(h脿o)鐨勬鍚戦亷闆堕粸(di菐n)浣胯Ц鐧�(f膩)鍣ㄧ疆鈥�0鈥濆京(f霉)浣�銆�

鏁�(sh霉)瀛楅憭鐩稿櫒

銆�銆�(2) 濂堝鏂壒閫熺巼鎶芥ǎ閼掔浉鍣�

銆�銆�瑭插瀷閼掔浉鍣ㄧ祫鎴愬涓嬪湒鎵�绀恒�傛ā鏁�(sh霉)璁婃彌鍣�(A/D)鐨勬娊妯ｇ巼鎸夊付閫氫俊铏�(h脿o)鐨勫彇妯ｅ畾鐞嗛伕鎿�锛屼互浣垮彇妯ｅ悗淇¤櫉(h脿o)鍚湁鍏呭垎鐨勮几鍏ヤ俊铏�(h脿o)鐩镐綅淇℃伅銆�

濂堝鏂壒閫熺巼鎶芥ǎ閼掔浉鍣�

銆�銆�(3) 閬庨浂鍙栨ǎ閼掔浉鍣�銆�

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銆�銆�(4)瓒呭墠婊悗鍙栨ǎ閼掔浉鍣ㄣ��
銆�銆�涓嬪湒鏄敤涓�鍊�(g猫)绨�(ji菐n)鍠簩鍏冮憭鐩稿櫒琛ㄧず鐨勯�欑ó閼掔浉鍣�銆傞�氶亷杓稿叆淇¤櫉(h脿o)鑸囨湰鍦板弮鑰冧俊铏�(h脿o)(鎴栧彈鎺ч悩鑴堟矕淇¤櫉(h脿o))涔嬮枔姣旂浉,褰㈡垚瓒呭墠鎴栨化鍚庤剤娌栬几鍑�銆傝秴鍓嶈剤娌栨剰鍛宠憲鏈湴鍙冭�冧俊铏�(h脿o)鐩镐綅钀藉悗,胃e锛�0,鏁呰秴鍓嶈剤娌栦綔鐢ㄥ皣浣挎湰鍦板弮鑰冧俊铏�(h脿o)鐩镐綅鎻愬墠;婊悗鑴堟矕琛ㄧず胃e锛�0,鍏朵綔鐢ㄦ槸浣挎湰鍦板弮鑰冧俊铏�(h脿o)鐩镐綅鎺ㄥ悗銆�

瓒呭墠婊悗鍙栨ǎ閼掔浉鍣�

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