鍟�:濡備綍瀵�(sh铆)鐝�(xi脿n)鍠墖浠ュお缍�(w菐ng)寰帶鍒跺櫒?

绛�:瑷ｇ珔鏄皣寰帶鍒跺櫒銆佷互澶恫(w菐ng)濯掗珨鎺ュ叆鎺у埗鍣�(MAC)鍜岀墿鐞嗘帴鍙ｆ敹鐧�(f膩)鍣�(PHY)鏁村悎閫�(j矛n)鍚屼竴鑺墖,閫欐ǎ鑳藉幓鎺夎ū澶氬鎺ュ厓鍣ㄤ欢.閫欑ó鏂规鍙娇MAC鍜孭HY瀵�(sh铆)鐝�(xi脿n)寰堝ソ鐨勫尮閰�,鍚屾檪(sh铆)閭勫彲娓涘皬寮曡叧鏁�(sh霉)銆佺府灏忚姱鐗囬潰绌�.鍠墖浠ュお缍�(w菐ng)寰帶鍒跺櫒閭勯檷浣庝簡鍔熻€�,鐗瑰垾鏄湪閲囩敤鎺夐浕妯″紡鐨勬儏娉佷笅.

鍟�:浠ュお缍�(w菐ng)MAC鏄粈涔�?

绛�:MAC鍗矼edia Access Control,鍗冲獟楂旇í鍟忔帶鍒跺瓙灞ゅ崝(xi茅)璀�.瑭插崝(xi茅)璀颁綅浜嶰SI涓冨堡鍗�(xi茅)璀颁腑鏁�(sh霉)鎿�(j霉)閺堣矾灞ょ殑涓嬪崐閮ㄥ垎,涓昏璨�(f霉)璨�(z茅)鎺у埗鑸囬€ｆ帴鐗╃悊灞ょ殑鐗╃悊浠嬭唱(zh矛).鍦ㄧ櫦(f膩)閫佹暩(sh霉)鎿�(j霉)鐨勬檪(sh铆)鍊�,MAC鍗�(xi茅)璀板彲浠ヤ簨鍏堝垽鏂锋槸鍚﹀彲浠ョ櫦(f膩)閫佹暩(sh霉)鎿�(j霉),濡傛灉鍙互鐧�(f膩)閫佸皣绲︽暩(sh霉)鎿�(j霉)鍔犱笂涓€浜涙帶鍒朵俊鎭�,鏈€绲傚皣鏁�(sh霉)鎿�(j霉)浠ュ強鎺у埗淇℃伅浠ヨ(gu墨)瀹氱殑鏍煎紡鐧�(f膩)閫佸埌鐗╃悊灞�;鍦ㄦ帴鏀舵暩(sh霉)鎿�(j霉)鐨勬檪(sh铆)鍊�,MAC鍗�(xi茅)璀伴鍏堝垽鏂疯几鍏ョ殑淇℃伅骞舵槸鍚︾櫦(f膩)鐢熷偝杓搁尟(cu貌)瑾�,濡傛灉娌掓湁閷�(cu貌)瑾�,鍓囧幓鎺夋帶鍒朵俊鎭櫦(f膩)閫佽嚦LLC灞�.瑭插堡鍗�(xi茅)璀版槸浠ュお缍�(w菐ng)MAC鐢盜EEE-802.3浠ュお缍�(w菐ng)妯�(bi膩o)婧�(zh菙n)瀹氱京.鏈€鏂扮殑MAC鍚屾檪(sh铆)鏀寔10Mbps鍜�100Mbps鍏╃ó閫熺巼.

浠ュお缍�(w菐ng)鏁�(sh霉)鎿�(j霉)閺堣矾灞ゅ叾瀵�(sh铆)鍖呭惈MAC(浠嬭唱(zh矛)瑷晱鎺у埗)瀛愬堡鍜孡LC(閭忚集閺堣矾鎺у埗)瀛愬堡.涓€濉婁互澶恫(w菐ng)鍗AC鑺墖鐨勪綔鐢ㄤ笉浣嗚瀵�(sh铆)鐝�(xi脿n)MAC瀛愬堡鍜孡LC瀛愬堡鐨勫姛鑳�,閭勮鎻愪緵绗﹀悎瑕�(gu墨)鑼冪殑PCI鐣岄潰浠ュ(sh铆)鐝�(xi脿n)鍜屼富姗�(j墨)鐨勬暩(sh霉)鎿�(j霉)浜ゆ彌.

MAC寰濸CI绺界窔鏀跺埌IP鏁�(sh霉)鎿�(j霉)鍖�(鎴栬€呭叾浠栫恫(w菐ng)绲�(lu貌)灞ゅ崝(xi茅)璀扮殑鏁�(sh霉)鎿�(j霉)鍖�)鍚�,灏囦箣鎷嗗垎骞堕噸鏂版墦鍖呮垚鏈€澶�1518Byte,鏈€灏�64Byte鐨勫箑.閫欏€�(g猫)骞€閲岄潰鍖呮嫭浜嗙洰妯�(bi膩o)MAC鍦板潃銆佽嚜宸辩殑婧怣AC鍦板潃鍜屾暩(sh霉)鎿�(j霉)鍖呴噷闈㈢殑鍗�(xi茅)璀伴鍨�(姣斿IP鏁�(sh霉)鎿�(j霉)鍖呯殑椤炲瀷鐢�80琛ㄧず).鏈€鍚庨倓鏈変竴鍊�(g猫)DWORD(4Byte)鐨凜RC纰�.

鍙槸鐩(bi膩o)鐨凪AC鍦板潃鏄摢閲屼締鐨勫憿?閫欑壗鎵埌涓€鍊�(g猫)ARP鍗�(xi茅)璀�(浠嬩箮浜庣恫(w菐ng)绲�(lu貌)灞ゅ拰鏁�(sh霉)鎿�(j霉)閺堣矾灞ょ殑涓€鍊�(g猫)鍗�(xi茅)璀�).绗竴娆″偝閫佹煇鍊�(g猫)鐩殑IP鍦板潃鐨勬暩(sh霉)鎿�(j霉)鐨勬檪(sh铆)鍊�,鍏堟渻(hu矛)鐧�(f膩)鍑轰竴鍊�(g猫)ARP鍖�,鍏禡AC鐨勭洰妯�(bi膩o)鍦板潃鏄唬鎾湴鍧€,閲岄潰瑾埌锛氣€濊鏄痻xx.xxx.xxx.xxx閫欏€�(g猫)IP鍦板潃鐨勪富浜�锛熲€濆洜?y脿n)妲彂V鎾寘,鎵€鏈夐€欏€�(g猫)灞€鍩熺恫(w菐ng)鐨勪富姗�(j墨)閮芥敹鍒颁簡閫欏€�(g猫)ARP璜�(q菒ng)姹�.鏀跺埌璜�(q菒ng)姹傜殑涓绘(j墨)灏囬€欏€�(g猫)IP鍦板潃鍜岃嚜宸辩殑鐩告瘮杓�,濡傛灉涓嶇浉鍚屽氨涓嶄簣鐞嗘渻(hu矛),濡傛灉鐩稿悓灏辩櫦(f膩)鍑篈RP闊挎噳(y墨ng)鍖�.閫欏€�(g猫)IP鍦板潃鐨勪富姗�(j墨)鏀跺埌閫欏€�(g猫)ARP璜�(q菒ng)姹傚寘鍚庡洖寰�(f霉)鐨凙RP闊挎噳(y墨ng)閲岃鍒�:鈥濇垜鏄€欏€�(g猫)IP鍦板潃鐨勪富浜衡€�.閫欏€�(g猫)鍖呴噷闈㈠氨鍖呮嫭浜嗕粬鐨凪AC鍦板潃.浠ュ悗鐨勭郸閫欏€�(g猫)IP鍦板潃鐨勫箑鐨勭洰妯�(bi膩o)MAC鍦板潃灏辫纰哄畾浜�.(鍏跺畠鐨勫崝(xi茅)璀板IPX/SPX涔熸湁鐩告噳(y墨ng)鐨勫崝(xi茅)璀板畬鎴愰€欎簺鎿嶄綔.)

IP鍦板潃鍜孧AC鍦板潃涔嬮枔鐨勯棞(gu膩n)鑱�(li谩n)闂�(gu膩n)绯讳繚瀛樺湪涓绘(j墨)绯荤当(t菕ng)閲岄潰,鍙仛ARP琛�,鐢遍﹨(q奴)鍕�(d貌ng)绋嬪簭鍜屾搷浣滅郴绲�(t菕ng)瀹屾垚.鍦∕icrosoft鐨勭郴绲�(t菕ng)閲岄潰鍙互鐢╝rp-a鐨勫懡浠ゆ煡鐪婣RP琛�.鏀跺埌鏁�(sh霉)鎿�(j霉)骞€鐨勬檪(sh铆)鍊欎篃鏄竴妯�,鍋氬畬CRC浠ュ悗,濡傛灉娌掓湁CRC鏁堥(y脿n)閷�(cu貌)瑾�,灏辨妸骞€闋幓鎺�,鎶婃暩(sh霉)鎿�(j霉)鍖呮嬁鍑轰締閫氶亷妯�(bi膩o)婧�(zh菙n)鐨勫€熷彛鍌抽仦绲﹂﹨(q奴)鍕�(d貌ng)鍜屼笂灞ょ殑鍗�(xi茅)璀板妫�,鏈€绲傛纰虹殑閬�(d谩)鍒版垜鍊戠殑鎳�(y墨ng)鐢ㄧ▼搴�.

閭勬湁涓€浜涙帶鍒跺箑,渚嬪娴佹帶骞€涔熼渶瑕丮AC鐩存帴璀�(sh铆)鍒ュ苟鍩�(zh铆)琛岀浉鎳�(y墨ng)鐨勮鐐�.

浠ュお缍�(w菐ng)MAC鑺墖鐨勪竴绔帴瑷�(j矛)绠楁(j墨)PCI绺界窔,鍙﹀涓€绔氨鎺ュ埌PHY鑺墖涓�,瀹冨€戜箣闁撴槸閫氶亷MII鎺ュ彛閺堟帴鐨�.

鍟�:浠€涔堟槸MII?

绛�:MII鍗冲獟楂旂崹(d煤)绔嬫帴鍙�,瀹冩槸IEEE-802.3瀹氱京鐨勪互澶恫(w菐ng)琛屾キ(y猫)妯�(bi膩o)婧�(zh菙n)."濯掗珨鐛�(d煤)绔�"琛ㄦ槑鍦ㄤ笉灏�(du矛)MAC纭欢閲嶆柊瑷�(sh猫)瑷�(j矛)鎴栨浛鎻涚殑鎯呮硜涓�,浠讳綍椤炲瀷鐨凱HY瑷�(sh猫)鍌欓兘鍙互姝ｅ父宸ヤ綔.瀹冨寘鎷竴鍊�(g猫)鏁�(sh霉)鎿�(j霉)鎺ュ彛,浠ュ強涓€鍊�(g猫)MAC鍜孭HY涔嬮枔鐨勭鐞嗘帴鍙�.

鏁�(sh霉)鎿�(j霉)鎺ュ彛鍖呮嫭鍒嗗垾鐢ㄤ簬鐧�(f膩)閫佸櫒鍜屾帴鏀跺櫒鐨勫叐姊濈崹(d煤)绔嬩俊閬�.姣忔淇￠亾閮芥湁鑷繁鐨勬暩(sh霉)鎿�(j霉),鏅�(sh铆)閻樺拰鎺у埗淇¤櫉(h脿o).MII鏁�(sh霉)鎿�(j霉)鎺ュ彛绺藉叡闇€瑕�16鍊�(g猫)淇¤櫉(h脿o),鍖呮嫭TX_ER,TXD<3:0>,TX_EN,TX_CLK, COL,RXD<3:0>,RX_EX,RX_CLK,CRS,RX_DV绛�.MII浠�4浣嶅崐瀛楃瘈(ji茅)鏂瑰紡鍌抽€佹暩(sh霉)鎿�(j霉)闆欏悜鍌宠几,鏅�(sh铆)閻橀€熺巼25MHz.鍏跺伐浣滈€熺巼鍙仈(d谩)100Mb/s;

MII绠＄悊鎺ュ彛鏄€�(g猫)闆欎俊铏�(h脿o)鎺ュ彛,涓€鍊�(g猫)鏄檪(sh铆)閻樹俊铏�(h脿o),鍙︿竴鍊�(g猫)鏄暩(sh霉)鎿�(j霉)淇¤櫉(h脿o).閫氶亷绠＄悊鎺ュ彛,涓婂堡鑳界洠(ji膩n)瑕栧拰鎺у埗PHY.鍏剁鐞嗘槸浣跨敤SMI(Serial Management Interface)绺界窔閫氶亷璁€瀵玃HY鐨勫瘎瀛樺櫒渚嗗畬鎴愮殑.PHY閲岄潰鐨勯儴鍒嗗瘎瀛樺櫒鏄疘EEE瀹氱京鐨�,閫欐ǎPHY鎶婅嚜宸辩殑鐩墠鐨勭媭鎱�(t脿i)鍙嶆槧鍒板瘎瀛樺櫒閲岄潰,MAC閫氶亷SMI绺界窔涓嶆柗鐨勮畝鍙朠HY鐨勭媭鎱�(t脿i)瀵勫瓨鍣ㄤ互寰楃煡鐩墠PHY鐨勭媭鎱�(t脿i),渚嬪閫ｆ帴閫熷害,闆欏伐鐨勮兘鍔涚瓑.鐣�(d膩ng)鐒朵篃鍙互閫氶亷SMI瑷�(sh猫)缃甈HY鐨勫瘎瀛樺櫒閬�(d谩)鍒版帶鍒剁殑鐩殑,渚嬪娴佹帶鐨勬墦闁嬮棞(gu膩n)闁�,鑷崝(xi茅)鍟嗘ā寮忛倓鏄挤(qi谩ng)鍒舵ā寮忕瓑.涓嶈珫鏄墿鐞嗛€ｆ帴鐨凪II绺界窔鍜孲MI绺界窔閭勬槸PHY鐨勭媭鎱�(t脿i)瀵勫瓨鍣ㄥ拰鎺у埗瀵勫瓨鍣ㄩ兘鏄湁IEEE鐨勮(gu墨)鑼冪殑,鍥犳涓嶅悓鍏徃鐨凪AC鍜孭HY涓€妯ｅ彲浠ュ崝(xi茅)瑾�(di脿o)宸ヤ綔.鐣�(d膩ng)鐒剁偤浜嗛厤鍚堜笉鍚屽叕鍙哥殑PHY鐨勮嚜宸辩壒鏈夌殑涓€浜涘姛鑳�,椹�(q奴)鍕�(d貌ng)闇€瑕佸仛鐩告噳(y墨ng)鐨勪慨鏀�.

MII鏀寔10Mbps鍜�100Mbps鐨勬搷浣�,涓€鍊�(g猫)鎺ュ彛鐢�14鏍圭窔绲勬垚,瀹冪殑鏀寔閭勬槸姣旇純闈堟椿鐨�,浣嗘槸鏈変竴鍊�(g猫)缂洪粸(di菐n)鏄洜?y脿n)妯楊彎绮嬧偓(g猫)绔彛鐢ㄧ殑淇¤櫉(h脿o)绶氬お澶�,濡傛灉涓€鍊�(g猫)8绔彛鐨勪氦鎻涙(j墨)瑕佺敤鍒�112鏍圭窔,16绔彛灏辫鐢ㄥ埌224鏍圭窔,鍒�32绔彛鐨勮┍灏辫鐢ㄥ埌448鏍圭窔,涓€鑸寜鐓ч€欏€�(g猫)鎺ュ彛鍋氫氦鎻涙(j墨),鏄笉澶従(xi脿n)瀵�(sh铆)鐨�,鎵€浠ョ従(xi脿n)浠ｇ殑浜ゆ彌姗�(j墨)鐨勫埗浣滈兘鏈�(hu矛)鐢ㄥ埌鍏跺畠鐨勪竴浜涘緸MII绨�(ji菐n)鍖栧嚭渚嗙殑妯�(bi膩o)婧�(zh菙n),姣斿RMII,SMII,GMII绛�.

RMII鏄啊(ji菐n)鍖栫殑MII鎺ュ彛,鍦ㄦ暩(sh霉)鎿�(j霉)鐨勬敹鐧�(f膩)涓婂畠姣擬II鎺ュ彛灏戜簡涓€鍊嶇殑淇¤櫉(h脿o)绶�,鎵€浠ュ畠涓€鑸姹傛槸50MHz鐨勭附绶氭檪(sh铆)閻�.RMII涓€鑸敤鍦ㄥ绔彛鐨勪氦鎻涙(j墨),瀹冧笉鏄瘡鍊�(g猫)绔彛瀹夋帓鏀�,鐧�(f膩)鍏╁€�(g猫)鏅�(sh铆)閻�,鑰屾槸鎵€鏈夌殑鏁�(sh霉)鎿�(j霉)绔彛鍏敤涓€鍊�(g猫)鏅�(sh铆)閻樼敤浜庢墍鏈夌鍙ｇ殑鏀剁櫦(f膩),閫欓噷灏辩瘈(ji茅)鐪佷簡涓嶅皯鐨勭鍙ｆ暩(sh霉)鐩�.RMII鐨勪竴鍊�(g猫)绔彛瑕佹眰7鍊�(g猫)鏁�(sh霉)鎿�(j霉)绶�,姣擬II灏戜簡涓€鍊�,鎵€浠ヤ氦鎻涙(j墨)鑳藉鎺ュ叆澶氫竴鍊嶆暩(sh霉)鎿�(j霉)鐨勭鍙�.鍜孧II涓€妯�,RMII鏀寔10Mbps鍜�100Mbps鐨勭附绶氭帴鍙ｉ€熷害.

SMII鏄敱鎬濈鎻愬嚭鐨勪竴绋獟楂旀帴鍙�,瀹冩湁姣擱MII鏇村皯鐨勪俊铏�(h脿o)绶氭暩(sh霉)鐩�,S琛ㄧず涓茶鐨勬剰鎬�.鍥�?y脿n)妯楊彙鎸ラ潯妗擃媮鐩�?h脿o)绶氬偝閫佺櫦(f膩)閫佹暩(sh霉)鎿�(j霉),涓€鏍逛俊铏�(h脿o)绶氬偝杓告帴鍙楁暩(sh霉)鎿�(j霉),鎵€浠ョ偤浜嗘豢瓒�100Mbps鐨勭附绶氭帴鍙ｉ€熷害鐨勯渶姹�,瀹冪殑鏅�(sh铆)閻橀牷鐜囧氨閬�(d谩)鍒颁簡125MHz,鐐轰粈涔堢敤125MHz,鏄洜?y脿n)闁�?sh霉)鎿�(j霉)绶氶噷闈㈡渻(hu矛)鍌抽€佷竴浜涙帶鍒朵俊鎭�.SMII涓€鍊�(g猫)绔彛鍍呯敤4鏍逛俊铏�(h脿o)绶氬畬鎴�100Mbps鐨勫偝杓�,姣旇捣RMII宸笉澶氬張灏戜簡涓€鍊嶇殑淇¤櫉(h脿o)绶�.SMII鍦ㄥ伐妤�(y猫)鐣岀殑鏀寔鍔涘害鏄緢楂樼殑.鍚岀悊,鎵€鏈夌鍙ｇ殑鏁�(sh霉)鎿�(j霉)鏀剁櫦(f膩)閮藉叕鐢ㄥ悓涓€鍊�(g猫)澶栭儴鐨�125MHz鏅�(sh铆)閻�.

GMII鏄崈鍏嗙恫(w菐ng)鐨凪II鎺ュ彛,閫欏€�(g猫)涔熸湁鐩告噳(y墨ng)鐨凴GMII鎺ュ彛,琛ㄧず绨�(ji菐n)鍖栦簡鐨凣MII鎺ュ彛.

MII绺界窔

鍦↖EEE802.3涓(gu墨)瀹氱殑MII绺界窔鏄竴绋敤浜庡皣涓嶅悓椤炲瀷鐨凱HY鑸囩浉鍚岀恫(w菐ng)绲�(lu貌)鎺у埗鍣�(MAC)鐩搁€ｆ帴鐨勯€氱敤绺界窔.缍�(w菐ng)绲�(lu貌)鎺у埗鍣ㄥ彲浠ョ敤鍚屾ǎ鐨勭‖浠舵帴鍙ｈ垏浠讳綍PHY .

GMII(Gigabit MII)

GMII閲囩敤8浣嶆帴鍙ｆ暩(sh霉)鎿�(j霉),宸ヤ綔鏅�(sh铆)閻�125MHz,鍥犳鍌宠几閫熺巼鍙仈(d谩)1000Mbps.鍚屾檪(sh铆)鍏煎MII鎵€瑕�(gu墨)瀹氱殑10/100 Mbps宸ヤ綔鏂瑰紡.

GMII鎺ュ彛鏁�(sh霉)鎿�(j霉)绲�(ji茅)妲�(g貌u)绗﹀悎IEEE浠ュお缍�(w菐ng)妯�(bi膩o)婧�(zh菙n).瑭叉帴鍙ｅ畾缇╄IEEE 802.3-2000.

鐧�(f膩)閫佸櫒:

GTXCLK鈥斺€斿悏姣旂壒TX..淇¤櫉(h脿o)鐨勬檪(sh铆)閻樹俊铏�(h脿o)(125MHz)

TXCLK鈥斺€�10/100Mbps淇¤櫉(h脿o)鏅�(sh铆)閻�

TXD[7..0]鈥斺€旇鐧�(f膩)閫佹暩(sh霉)鎿�(j霉)

TXEN鈥斺€旂櫦(f膩)閫佸櫒浣胯兘淇¤櫉(h脿o)

TXER鈥斺€旂櫦(f膩)閫佸櫒閷�(cu貌)瑾�(鐢ㄤ簬鐮村涓€鍊�(g猫)鏁�(sh霉)鎿�(j霉)鍖�)

娉�:鍦ㄥ崈鍏嗛€熺巼涓�,鍚慞HY鎻愪緵GTXCLK淇¤櫉(h脿o),TXD,TXEN,TXER淇¤櫉(h脿o)鑸囨鏅�(sh铆)閻樹俊铏�(h脿o)鍚屾.鍚﹀墖,鍦�10/100Mbps閫熺巼涓�,PHY鎻愪緵TXCLK鏅�(sh铆)閻樹俊铏�(h脿o),鍏跺畠淇¤櫉(h脿o)鑸囨淇¤櫉(h脿o)鍚屾.鍏跺伐浣滈牷鐜囩偤25MHz(100M缍�(w菐ng)绲�(lu貌))鎴�2.5MHz(10M缍�(w菐ng)绲�(lu貌)).

鎺ユ敹鍣�:

RXCLK鈥斺€旀帴鏀舵檪(sh铆)閻樹俊铏�(h脿o)(寰炴敹鍒扮殑鏁�(sh霉)鎿�(j霉)涓彁鍙�,鍥犳鑸嘒TXCLK鐒￠棞(gu膩n)鑱�(li谩n))

RXD[7..0]鈥斺€旀帴鏀舵暩(sh霉)鎿�(j霉)

RXDV鈥斺€旀帴鏀舵暩(sh霉)鎿�(j霉)鏈夋晥鎸囩ず

RXER鈥斺€旀帴鏀舵暩(sh霉)鎿�(j霉)鍑洪尟(cu貌)鎸囩ず

COL鈥斺€旀矕绐佹娓�(c猫)(鍍呯敤浜庡崐闆欏伐鐙€鎱�(t脿i))

绠＄悊閰嶇疆

MDC鈥斺€旈厤缃帴鍙ｆ檪(sh铆)閻�

MDIO鈥斺€旈厤缃帴鍙/O

绠＄悊閰嶇疆鎺ュ彛鎺у埗PHY鐨勭壒鎬�.瑭叉帴鍙ｆ湁32鍊�(g猫)瀵勫瓨鍣ㄥ湴鍧€,姣忓€�(g猫)鍦板潃16浣�.鍏朵腑鍓�16鍊�(g猫)宸茬稉(j墨ng)鍦�"IEEE 802.3,2000-22.2.4 Management Functions"涓(gu墨)瀹氫簡鐢ㄩ€�,鍏朵綑鐨勫墖鐢卞悇鍣ㄤ欢鑷繁鎸囧畾.

RMII(Reduced Media Independant Interface)
绨�(ji菐n)鍖栧獟楂旂崹(d煤)绔嬫帴鍙�
鏄(bi膩o)婧�(zh菙n)鐨勪互澶恫(w菐ng)鎺ュ彛涔嬩竴,姣擬II鏈夋洿灏戠殑I/O鍌宠几.

RMII鍙ｆ槸鐢ㄥ叐鏍圭窔渚嗗偝杓告暩(sh霉)鎿�(j霉)鐨�,MII鍙ｆ槸鐢�4鏍圭窔渚嗗偝杓告暩(sh霉)鎿�(j霉)鐨�,GMII鏄敤8鏍圭窔渚嗗偝杓告暩(sh霉)鎿�(j霉)鐨�.MII/RMII鍙槸涓€绋帴鍙�,灏�(du矛)浜�10Mbps绶氶€�,MII鐨勬檪(sh铆)閻橀€熺巼鏄�2.5MHz灏卞彲浠ヤ簡,RMII鍓囬渶瑕�5MHz;灏�(du矛)浜�100Mbps绶氶€�,MII闇€瑕佺殑鏅�(sh铆)閻橀€熺巼鏄�25MHz,RMII鍓囨槸50MHz.
MII/RMII鐢ㄤ簬鍌宠几浠ュお缍�(w菐ng)鍖�,鍦∕II/RMII鎺ュ彛鏄�4/2bit鐨�,鍦ㄤ互澶恫(w菐ng)鐨凱HY閲岄渶瑕佸仛涓插苟杞�(zhu菐n)鎻�,绶ㄨВ纰肩瓑鎵嶈兘鍦ㄩ洐绲炵窔鍜屽厜绾栦笂閫�(j矛n)琛屽偝 杓�,鍏跺箑鏍煎紡閬靛惊IEEE 802.3(10M)/IEEE 802.3u(100M)/IEEE 802.1q(VLAN).浠ュお缍�(w菐ng)骞€鐨勬牸寮忕偤:鍓嶅皫(d菐o)绗�+闁嬪浣�+鐩殑mac鍦板潃+婧恗ac鍦板潃+椤炲瀷/闀�(zh菐ng)搴�+鏁�(sh霉)鎿�(j霉)+padding(optional)+32bitCRC
濡傛灉鏈塿lan,鍓囪鍦ㄩ鍨�/闀�(zh菐ng)搴﹀悗闈㈠姞涓�2鍊�(g猫)瀛楃瘈(ji茅)鐨剉lan tag,鍏朵腑12bit渚嗚〃绀簐lan id,鍙﹀4bit琛ㄧず鏁�(sh霉)鎿�(j霉)鐨勫劒(y艒u)鍏堢礆(j铆)!

鍟�:浠ュお缍�(w菐ng)PHY鏄粈涔�?

绛�:PHY鏄墿鐞嗘帴鍙ｆ敹鐧�(f膩)鍣�,瀹冨(sh铆)鐝�(xi脿n)鐗╃悊灞�.IEEE-802.3妯�(bi膩o)婧�(zh菙n)瀹氱京浜嗕互澶恫(w菐ng)PHY.鍖呮嫭MII/GMII(浠嬭唱(zh矛)鐛�(d煤)绔嬫帴鍙�)瀛愬堡,PCS(鐗╃悊绶ㄧ⒓瀛愬堡),PMA(鐗╃悊浠嬭唱(zh矛)闄勫姞)瀛愬堡,PMD(鐗╃悊浠嬭唱(zh矛)鐩搁棞(gu膩n))瀛愬堡,MDI瀛愬堡.瀹冪鍚圛EEE-802.3k涓敤浜�10BaseT(绗�14姊�)鍜�100BaseTX(绗�24姊濆拰绗�25姊�)鐨勮(gu墨)鑼�.

PHY鍦ㄧ櫦(f膩)閫佹暩(sh霉)鎿�(j霉)鐨勬檪(sh铆)鍊�,鏀跺埌MAC閬庝締鐨勬暩(sh霉)鎿�(j霉)(灏�(du矛)PHY渚嗚,娌掓湁骞€鐨勬蹇�,灏�(du矛)瀹冧締瑾�,閮芥槸鏁�(sh霉)鎿�(j霉)鑰屼笉绠′粈涔堝湴鍧€,鏁�(sh霉)鎿�(j霉)閭勬槸CRC.灏�(du矛)浜�100BaseTX鍥�?y脿n)妲?B/5B绶ㄧ⒓,姣�4bit灏卞鍔�1bit鐨勬閷�(cu貌)纰�),鐒跺悗鎶婂苟琛屾暩(sh霉)鎿�(j霉)杞�(zhu菐n)鍖栫偤涓茶娴佹暩(sh霉)鎿�(j霉),鍐嶆寜鐓х墿鐞嗗堡鐨勭法纰艰(gu墨)鍓囨妸鏁�(sh霉)鎿�(j霉)绶ㄧ⒓,鍐嶈畩?y艒u)妲燁棛M淇¤櫉(h脿o)鎶婃暩(sh霉)鎿�(j霉)閫佸嚭鍘�.鏀舵暩(sh霉)鎿�(j霉)鏅�(sh铆)鐨勬祦绋嬪弽涔�.PHY閭勬湁鍊�(g猫)閲嶈鐨勫姛鑳藉氨鏄(sh铆)鐝�(xi脿n)CSMA/CD鐨勯儴鍒嗗姛鑳�.瀹冨彲浠ユ娓�(c猫)鍒扮恫(w菐ng)绲�(lu貌)涓婃槸鍚︽湁鏁�(sh霉)鎿�(j霉)鍦ㄥ偝閫�,濡傛灉鏈夋暩(sh霉)鎿�(j霉)鍦ㄥ偝閫佷腑灏辩瓑寰�,涓€鏃︽娓�(c猫)鍒扮恫(w菐ng)绲�(lu貌)绌洪枒,鍐嶇瓑寰呬竴鍊�(g猫)闅ㄦ(j墨)鏅�(sh铆)闁撳悗灏囬€佹暩(sh霉)鎿�(j霉)鍑哄幓.濡傛灉鍏╁€�(g猫)纰板阀鍚屾檪(sh铆)閫佸嚭浜嗘暩(sh霉)鎿�(j霉),閭ｆǎ蹇呭皣閫犳垚娌栫獊,閫欐檪(sh铆)鍊�,娌栫獊妾㈡脯(c猫)姗�(j墨)妲�(g貌u)鍙互妾㈡脯(c猫)鍒�?j墨ng)_绐�,鐒跺悗鍚勭瓑寰呬竴鍊�(g猫)闅ㄦ(j墨)鐨勬檪(sh铆)闁撻噸鏂扮櫦(f膩)閫佹暩(sh霉)鎿�(j霉).閫欏€�(g猫)闅ㄦ(j墨)鏅�(sh铆)闁撳緢鏈夎瑳绌剁殑,骞朵笉鏄竴鍊�(g猫)甯告暩(sh霉),鍦ㄤ笉鍚岀殑鏅�(sh铆)鍒昏▓(j矛)绠楀嚭渚嗙殑闅ㄦ(j墨)鏅�(sh铆)闁撻兘鏄笉鍚岀殑,鑰屼笖鏈夊閲嶇畻娉曚締鎳�(y墨ng)浠樺嚭鐝�(xi脿n)姒傜巼寰堜綆鐨勫悓鍏╄嚭(t谩i)涓绘(j墨)涔嬮枔鐨勭浜屾娌栫獊.

瑷卞缍�(w菐ng)鍙嬪湪鎺ュ叆Internt瀵付鏅�(sh铆),鍠滄浣跨敤鈥濇惗绶氣€濆挤(qi谩ng)鐨勭恫(w菐ng)鍗�,灏辨槸鍥�?y脿n)妞寸厡顑愯厹HY纰版挒鍚庤▓(j矛)绠楅毃姗�(j墨)鏅�(sh铆)闁撶殑鏂规硶瑷�(sh猫)瑷�(j矛)涓婁笉鍚�,浣垮緱鏈変簺缍�(w菐ng)鍗℃瘮杓冣€濆崰渚垮疁鈥�.涓嶉亷,鎼剁窔鍙皪(du矛)寤ｆ挱鍩熺殑缍�(w菐ng)绲�(lu貌)鑰岃█鐨�,灏�(du矛)浜庝氦鎻涚恫(w菐ng)绲�(lu貌)鍜孉DSL閫欐ǎ榛�(di菐n)鍒伴粸(di菐n)閫ｆ帴鍒板眬绔ō(sh猫)鍌欑殑鎺ュ叆鏂瑰紡?j墨ng)]浠€涔堟剰缇�.鑰屼笖鈥濇惗绶氣€濅篃鍙槸鐩稿皪(du矛)鑰岃█鐨�,涓嶆渻(hu矛)鏈夎唱(zh矛)鐨勮畩鍖�.

鐝�(xi脿n)鍦ㄤ氦鎻涙(j墨)鐨勬櫘鍙婁娇寰椾氦鎻涚恫(w菐ng)绲�(lu貌)鐨勬櫘鍙�,浣垮緱娌栫獊鍩熺恫(w菐ng)绲�(lu貌)灏戜簡寰堝,妤靛ぇ鍦版彁楂樹簡缍�(w菐ng)绲�(lu貌)鐨勫付瀵�.浣嗘槸濡傛灉鐢℉UB,鎴栬€呭叡浜付瀵帴鍏nternet鐨勬檪(sh铆)鍊欓倓鏄爆浜庢矕绐佸煙缍�(w菐ng)绲�(lu貌),鏈夋矕绐佺鎾炵殑.浜ゆ彌姗�(j墨)鍜孒UB鏈€澶х殑鍗€(q奴)鍒ュ氨鏄�:涓€鍊�(g猫)鏄(g貌u)寤洪粸(di菐n)鍒伴粸(di菐n)缍�(w菐ng)绲�(lu貌)鐨勫眬鍩熺恫(w菐ng)浜ゆ彌瑷�(sh猫)鍌�,涓€鍊�(g猫)鏄(g貌u)寤烘矕绐佸煙缍�(w菐ng)绲�(lu貌)鐨勫眬鍩熺恫(w菐ng)浜掗€ｈō(sh猫)鍌�.

闄ゆ涔嬪PHY閭勬彁渚涗簡鍜屽皪(du矛)绔ō(sh猫)鍌欓€ｆ帴鐨勯噸瑕佸姛鑳藉苟閫氶亷LED鐕堥’绀哄嚭鑷繁鐩墠鐨勯€ｆ帴鐨勭媭鎱�(t脿i)鍜屽伐浣滅媭鎱�(t脿i)璁撴垜鍊戠煡閬�.鐣�(d膩ng)鎴戝€戠郸缍�(w菐ng)鍗℃帴鍏ョ恫(w菐ng)绶氱殑鏅�(sh铆)鍊�,PHY涓嶆柗鐧�(f膩)鍑虹殑鑴堟矕淇¤櫉(h脿o)妾㈡脯(c猫)鍒板皪(du矛)绔湁瑷�(sh猫)鍌�,瀹冨€戦€氶亷妯�(bi膩o)婧�(zh菙n)鐨勨€濊獮瑷€鈥濅氦娴�,浜掔浉鍗�(xi茅)鍟嗗苟鍗诲畾閫ｆ帴閫熷害銆侀洐宸ユā寮忋€佹槸鍚﹂噰鐢ㄦ祦鎺х瓑.閫氬父鎯呮硜涓�,鍗�(xi茅)鍟嗙殑绲�(ji茅)鏋滄槸鍏╁€�(g猫)瑷�(sh猫)鍌欎腑鑳藉悓鏅�(sh铆)鏀寔鐨勬渶澶ч€熷害鍜屾渶濂界殑闆欏伐妯″紡.閫欏€�(g猫)鎶€琛�(sh霉)琚ū鐐篈utoNegotiation鎴栬€匩WAY,瀹冨€戞槸涓€鍊�(g猫)鎰忔€濃€撹嚜鍕�(d貌ng)鍗�(xi茅)鍟�.

鍏烽珨鍌宠几閬庣▼鐐�,鐧�(f膩)閫佹暩(sh霉)鎿�(j霉)鏅�(sh铆),缍�(w菐ng)鍗￠鍏堝伒鑱戒粙璩�(zh矛)涓婃槸鍚︽湁杓夋尝(杓夋尝鐢遍浕澹撴寚绀�),濡傛灉鏈�,鍓囪獚(r猫n)鐐哄叾浠栫珯榛�(di菐n)姝ｅ湪鍌抽€佷俊鎭�,绻肩簩(x霉)鍋佃伣浠嬭唱(zh矛).涓€鏃﹂€氫俊浠嬭唱(zh矛)鍦ㄤ竴瀹氭檪(sh铆)闁撴鍏�(n猫i)(绋辩偤骞€闁撶斧闅橧FG=9.6寰)鏄畨闈滅殑,鍗虫矑鏈夎鍏朵粬绔欓粸(di菐n)鍗犵敤,鍓囬枊濮嬮€�(j矛n)琛屽箑鏁�(sh霉)鎿�(j霉)鐧�(f膩)閫�,鍚屾檪(sh铆)绻肩簩(x霉)鍋佃伣閫氫俊浠嬭唱(zh矛),浠ユ娓�(c猫)娌栫獊.鍦ㄧ櫦(f膩)閫佹暩(sh霉)鎿�(j霉)鏈熼枔,濡傛灉妾㈡脯(c猫)鍒�?j墨ng)_绐�,鍓囩珛鍗冲仠姝㈣┎娆＄櫦(f膩)閫�,骞跺悜浠嬭唱(zh矛)鐧�(f膩)閫佷竴鍊�(g猫)鈥滈樆濉炩€濅俊铏�(h脿o),鍛婄煡鍏朵粬绔欓粸(di菐n)宸茬稉(j墨ng)鐧�(f膩)鐢熸矕绐�,寰炶€屼笩妫勯偅浜涘彲鑳戒竴鐩村湪鎺ユ敹鐨勫彈鍒版悕澹炵殑骞€鏁�(sh霉)鎿�(j霉),骞剁瓑寰呬竴娈甸毃姗�(j墨)鏅�(sh铆)闁�(CSMA/CD纰哄畾绛夊緟鏅�(sh铆)闁撶殑绠楁硶鏄簩閫�(j矛n)鍒舵寚鏁�(sh霉)閫€閬跨畻娉�).鍦ㄧ瓑寰呬竴娈甸毃姗�(j墨)鏅�(sh铆)闁撳悗,鍐嶉€�(j矛n)琛屾柊鐨勭櫦(f膩)閫�.濡傛灉閲嶅偝澶氭鍚�(澶т簬16娆�)浠嶇櫦(f膩)鐢熸矕绐�,灏辨斁妫勭櫦(f膩)閫�.鎺ユ敹鏅�(sh铆),缍�(w菐ng)鍗＄€忚浠嬭唱(zh矛)涓婂偝杓�?sh霉)鎷跨附鈧�(g猫)骞€,濡傛灉鍏堕暦(zh菐ng)搴﹀皬浜�64瀛楃瘈(ji茅),鍓囪獚(r猫n)鐐烘槸娌栫獊纰庣墖.濡傛灉鎺ユ敹鍒扮殑骞€涓嶆槸娌栫獊纰庣墖涓旂洰鐨勫湴鍧€鏄湰鍦板湴鍧€,鍓囧皪(du矛)骞€閫�(j矛n)琛屽畬鏁存€ф牎椹�(y脿n),濡傛灉骞€闀�(zh菐ng)搴﹀ぇ浜�1518瀛楃瘈(ji茅)(绋辩偤瓒呴暦(zh菐ng)骞€,鍙兘鐢遍尟(cu貌)瑾ょ殑LAN椹�(q奴)鍕�(d貌ng)绋嬪簭鎴栧共鎿鹃€犳垚)鎴栨湭鑳介€氶亷CRC鏍￠(y脿n),鍓囪獚(r猫n)鐐鸿┎骞€鐧�(f膩)鐢熶簡鐣歌畩.閫氶亷鏍￠(y脿n)鐨勫箑琚獚(r猫n)鐐烘槸鏈夋晥鐨�,缍�(w菐ng)鍗″皣瀹冩帴鏀朵笅渚嗛€�(j矛n)琛屾湰鍦拌檿鐞�.

鍟�:閫犳垚浠ュお缍�(w菐ng)MAC鍜孭HY鍠墖鏁村悎闆ｅ害楂樼殑鍘熷洜鏄粈涔�?

绛�:PHY鏁村悎浜嗗ぇ閲忔ā鎿‖浠�,鑰孧AC鏄吀鍨嬬殑鍏ㄦ暩(sh霉)瀛楀櫒浠�.鑺墖闈㈢⿳鍙婃ā鎿�/鏁�(sh霉)瀛楁贩鍚堟灦妲�(g貌u)鏄偤浠€涔堝厛灏嘙AC闆嗘垚閫�(j矛n)寰帶鍒跺櫒鑰屽皣PHY鐣欏湪鐗囧鐨勫師鍥�.鏇撮潏娲�銆佸瘑搴︽洿楂樼殑鑺墖鎶€琛�(sh霉)宸茬稉(j墨ng)鍙互瀵�(sh铆)鐝�(xi脿n)MAC鍜孭HY鐨勫柈鑺墖鏁村悎.

鍟�: 缍�(w菐ng)鍗′笂闄J-45鎺ュ彛澶�,閭勯渶瑕佸叾瀹冨厓浠跺棊?

绛�:PHY鍜孧AC鏄恫(w菐ng)鍗＄殑涓昏绲勬垚閮ㄥ垎,缍�(w菐ng)鍗′竴鑸敤RJ-45鎻掑彛,10M缍�(w菐ng)鍗＄殑RJ-45鎻掑彛涔熷彧鐢ㄤ簡1,2,3,6鍥涙牴閲�,鑰�100M鎴�1000M缍�(w菐ng)鍗＄殑鍓囨槸鍏牴閲濋兘鏄叏鐨�.闄ゆ浠ュ,閭勯渶瑕佸叾瀹冨厓浠�,鍥�?y脿n)娈鐒禤HY鎻愪緵绲曞ぇ澶氭暩(sh霉)妯℃摤鏀寔,浣嗗湪涓€鍊�(g猫)鍏稿瀷瀵�(sh铆)鐝�(xi脿n)涓�,浠嶉渶澶栨帴6,7鍙垎绔嬪厓浠跺強涓€鍊�(g猫)灞€鍩熺恫(w菐ng)绲曠罚妯″.绲曠罚妯″涓€鑸噰鐢ㄤ竴鍊�(g猫)1锛�1鐨勮畩澹撳櫒.閫欎簺閮ㄤ欢鐨勪富瑕佸姛鑳芥槸鐐轰簡淇濊(h霉)PHY鍏嶉伃鐢变簬闆绘埃澶辫鑰屽紩璧风殑鎼嶅.

鍙﹀,涓€椤咰MOS鍒剁▼鐨勮姱鐗囧伐浣滅殑鏅�(sh铆)鍊欑敘(ch菐n)鐢熺殑淇¤櫉(h脿o)闆诲钩绺芥槸澶т簬0V鐨�(閫欏彇姹轰簬鑺墖鐨勫埗绋嬪拰瑷�(sh猫)瑷�(j矛)闇€姹�),浣嗘槸閫欐ǎ鐨勪俊铏�(h脿o)閫佸埌100绫崇敋鑷虫洿闀�(zh菐ng)鐨勫湴鏂规渻(hu矛)鏈夊緢澶х殑鐩存祦鍒嗛噺鐨勬悕澶�.鑰屼笖濡傛灉澶栭儴缍�(w菐ng)绶氱洿鎺ュ拰鑺墖鐩搁€ｇ殑瑭�,闆荤鎰熸噳(y墨ng)(鎵撻浄)鍜岄潨闆�,寰堝鏄撻€犳垚鑺墖鐨勬悕澹�.鍐嶅氨鏄ō(sh猫)鍌欐帴鍦版柟娉曚笉鍚�,闆荤恫(w菐ng)鐠�(hu谩n)澧冧笉鍚屾渻(hu矛)灏�(d菐o)鑷撮洐鏂圭殑0V闆诲钩涓嶄竴鑷�,閫欐ǎ淇¤櫉(h脿o)寰濧鍌冲埌B,鐢变簬A瑷�(sh猫)鍌欑殑0V闆诲钩鍜孊榛�(di菐n)鐨�0V闆诲钩涓嶄竴妯�,閫欐ǎ鏈�(hu矛)灏�(d菐o)鑷村緢澶х殑闆绘祦寰為浕鍕�(sh矛)楂樼殑瑷�(sh猫)鍌欐祦鍚戦浕鍕�(sh矛)浣庣殑瑷�(sh猫)鍌�.

鐐轰簡瑙ｆ焙浠ヤ笂鍟忛Transformer(闅旈洟璁婂鍣�)閫欏€�(g猫)鍣ㄤ欢灏辨噳(y墨ng)閬�(y霉n)鑰岀敓.瀹冩妸PHY閫佸嚭渚嗙殑宸垎淇¤櫉(h脿o)鐢ㄥ樊妯¤€﹀悎鐨勭窔鍦堣€﹀悎婵炬尝浠ュ寮�(qi谩ng)淇¤櫉(h脿o),骞朵笖閫氶亷闆荤鍫�(ch菐ng)鐨勮綁(zhu菐n)鎻涜€﹀悎鍒伴€ｆ帴缍�(w菐ng)绶氱殑鍙﹀涓€绔�.閫欐ǎ涓嶄絾浣跨恫(w菐ng)绶氬拰PHY涔嬮枔娌掓湁鐗╃悊涓婄殑閫ｆ帴鑰屾彌鍌抽仦浜嗕俊铏�(h脿o),闅旀柗浜嗕俊铏�(h脿o)涓殑鐩存祦鍒嗛噺,閭勫彲浠ュ湪涓嶅悓0V闆诲钩鐨勮ō(sh猫)鍌欎腑鍌抽€佹暩(sh霉)鎿�(j霉).

闅旈洟璁婂鍣ㄦ湰韬氨鏄ō(sh猫)瑷�(j矛)鐐鸿€�2KV~3KV鐨勯浕澹撶殑.涔熻捣鍒颁簡闃查浄鎰熸噳(y墨ng)(鎴戝€�(g猫)浜鸿獚(r猫n)鐐洪€欓噷鐢ㄩ槻闆锋搳涓嶅悎閬�)淇濊(h霉)鐨勪綔鐢�.鏈変簺鏈嬪弸鐨勭恫(w菐ng)绲�(lu貌)瑷�(sh猫)鍌欏湪闆烽洦澶╂埃鏅�(sh铆)瀹规槗琚噿澹�,澶ч兘鏄痯cb瑷�(sh猫)瑷�(j矛)涓嶅悎鐞嗛€犳垚鐨�,鑰屼笖澶ч兘鐕掓瘈浜嗚ō(sh猫)鍌欑殑鎺ュ彛,寰堝皯鏈夎姱鐗囪鐕掓瘈鐨�,灏辨槸闅旈洟璁婂鍣ㄨ捣鍒颁簡淇濊(h霉)浣滅敤.

闅旈洟璁婂鍣ㄦ湰韬槸鍊�(g猫)琚嫊(d貌ng)鍏冧欢,鍙槸鎶奝HY鐨勪俊铏�(h脿o)鑰﹀悎浜嗗埌缍�(w菐ng)绶氫笂,骞舵矑鏈夎捣鍒板姛鐜囨斁澶х殑浣滅敤.閭ｄ箞涓€寮电恫(w菐ng)鍗′俊铏�(h脿o)鐨勫偝杓�?sh霉)娣栭搵L(zh菐ng)璺濋洟鏄姹哄畾鐨勫憿?

涓€寮电恫(w菐ng)鍗＄殑鍌宠几鏈€澶ц窛闆㈠拰鑸囧皪(du矛)绔ō(sh猫)鍌欓€ｆ帴鐨勫吋瀹规€т富瑕佹槸PHY姹哄畾鐨�.浣嗘槸鍙互灏囦俊铏�(h脿o)閫佺殑瓒呴亷100绫崇殑PHY鍏惰几鍑虹殑鍔熺巼涔熸瘮杓冨ぇ,鏇村鏄撶敘(ch菐n)鐢烢MI鐨勫晱椤�.閫欐檪(sh铆)鍊欏氨闇€瑕佸悎閬╃殑Transformer鑸囦箣閰嶅悎.浣淧HY鐨勮€佸ぇ鍏徃Marvell鐨凱HY,甯稿父鍙互鍌抽€�180~200绫崇殑璺濋洟,閬�(yu菐n)閬�(yu菐n)瓒呴亷IEEE鐨�100绫崇殑妯�(bi膩o)婧�(zh菙n).

RJ-45鐨勬帴闋(sh铆)鐝�(xi脿n)浜嗙恫(w菐ng)鍗″拰缍�(w菐ng)绶氱殑閫ｆ帴.瀹冮噷闈㈡湁8鍊�(g猫)閵呯墖鍙互鍜岀恫(w菐ng)绶氫腑鐨�4灏�(du矛)闆欑禐(8鏍�)绶氬皪(du矛)鎳�(y墨ng)閫ｆ帴.鍏朵腑100M鐨勭恫(w菐ng)绲�(lu貌)涓�1,2鏄偝閫佹暩(sh霉)鎿�(j霉)鐨�,3,6鏄帴鏀舵暩(sh霉)鎿�(j霉)鐨�.1,2涔嬮枔鏄竴灏�(du矛)宸垎淇¤櫉(h脿o),涔熷氨鏄瀹冨€戠殑娉㈠舰涓€妯�,浣嗘槸鐩镐綅鐩稿樊180搴�,鍚屼竴鏅�(sh铆)鍒荤殑闆诲骞呭害浜掔偤姝ｈ矤(f霉).閫欐ǎ鐨勪俊铏�(h脿o)鍙互鍌抽仦鐨勬洿閬�(yu菐n),鎶楀共鎿捐兘鍔涘挤(qi谩ng).鍚屾ǎ鐨�,3,6涔熶竴妯ｆ槸宸垎淇¤櫉(h脿o).

缍�(w菐ng)绶氫腑鐨�8鏍圭窔,姣�?j墨)绛涱姸銇磋皾榛勯釜钄€姗愮矚?du矛).鎴戝€戝埗浣滅恫(w菐ng)绶氱殑鏅�(sh铆)鍊�,涓€瀹氳娉ㄦ剰瑕佽畵1,2鍦ㄥ叾涓殑涓€灏�(du矛),3,6鍦ㄤ竴灏�(du矛).鍚﹀墖闀�(zh菐ng)璺濋洟鎯呮硜涓嬩娇鐢ㄩ€欐牴缍�(w菐ng)绶氱殑鏅�(sh铆)鍊欐渻(hu矛)灏�(d菐o)鑷寸劇娉曢€ｆ帴鎴栭€ｆ帴寰堜笉绌�(w臎n)瀹�.

鐝�(xi脿n)鍦ㄦ柊鐨凱HY鏀寔AUTO MDI-X鍔熻兘(涔熼渶瑕乀ransformer鏀寔).瀹冨彲浠ュ(sh铆)鐝�(xi脿n)RJ-45鎺ュ彛鐨�1,2涓婄殑鍌抽€佷俊铏�(h脿o)绶氬拰3,6涓婄殑鎺ユ敹淇¤櫉(h脿o)绶氱殑鍔熻兘鑷嫊(d貌ng)浜掔浉浜ゆ彌.鏈夌殑PHY鐢氳嚦鏀寔涓€灏�(du矛)绶氫腑鐨勬淇¤櫉(h脿o)鍜岃矤(f霉)淇¤櫉(h脿o)鐨勫姛鑳借嚜鍕�(d貌ng)浜ゆ彌.閫欐ǎ鎴戝€戝氨涓嶅繀鐐轰簡鍒板簳閫ｆ帴鏌愬€�(g猫)瑷�(sh猫)鍌欓渶瑕佷娇鐢ㄧ洿閫氱恫(w菐ng)绶氶倓鏄氦鍙夌恫(w菐ng)绶氳€岃不(f猫i)蹇冧簡.閫欓爡(xi脿ng)鎶€琛�(sh霉)宸茬稉(j墨ng)琚唬娉涚殑鎳�(y墨ng)鐢ㄥ湪浜ゆ彌姗�(j墨)鍜孲OHO璺敱鍣ㄤ笂.

鍦�1000Basd-T缍�(w菐ng)绲�(lu貌)涓�,鍏朵腑鏈€鏅亶鐨勪竴绋偝杓告柟寮忔槸浣跨敤缍�(w菐ng)绶氫腑鎵€鏈夌殑4灏�(du矛)闆欑禐绶�,鍏朵腑澧炲姞浜�4,5鍜�7,8渚嗗叡鍚屽偝閫佹帴鏀舵暩(sh霉)鎿�(j霉).鐢变簬1000Based-T缍�(w菐ng)绲�(lu貌)鐨勮(gu墨)鑼冨寘鍚簡AUTOMDI-X鍔熻兘,鍥犳涓嶈兘鍤�(y谩n)鏍肩⒑瀹氬畠鍊戠殑鍌冲嚭鎴栨帴鏀剁殑闂�(gu膩n)绯�,瑕佺湅闆欐柟鐨勫叿楂旂殑鍗�(xi茅)鍟嗙祼(ji茅)鏋�.

涓€鐗囩恫(w菐ng)鍗′富瑕佸姛鑳界殑瀵�(sh铆)鐝�(xi脿n)灏卞熀鏈笂鏄笂闈㈤€欎簺鍣ㄤ欢浜�.

鍏朵粬鐨�,閭勬湁涓€椤咵EPROM鑺墖,閫氬父鏄竴椤�93C46.閲岄潰瑷橀寗浜嗙恫(w菐ng)鍗¤姱鐗囩殑渚涙噳(y墨ng)鍟咺D,瀛愮郴绲�(t菕ng)渚涙噳(y墨ng)鍟咺D,缍�(w菐ng)鍗＄殑MAC鍦板潃,缍�(w菐ng)鍗＄殑涓€浜涢厤缃�,濡係MI绺界窔涓奝HY鐨勫湴鍧€,BOOTROM鐨勫閲�,鏄惁鍟熺敤BOOTROM寮曞皫(d菐o)绯荤当(t菕ng)绛夋澅瑗�.

寰堝缍�(w菐ng)鍗′笂閭勬湁BOOTROM閫欏€�(g猫)鏉辫タ.瀹冩槸鐢ㄤ簬鐒＄洡宸ヤ綔绔欏紩灏�(d菐o)鎿嶄綔绯荤当(t菕ng)鐨�.鏃㈢劧鐒＄洡,涓€浜涘紩灏�(d菐o)鐢ㄥ繀闇€鐢ㄥ埌鐨勭▼搴忓拰鍗�(xi茅)璀版＇灏辨斁鍒伴噷闈簡,渚嬪RPL,PXE绛�.瀵�(sh铆)闅涗笂瀹冨氨鏄竴鍊�(g猫)妯�(bi膩o)婧�(zh菙n)鐨凱CI ROM.鎵€浠ユ墠鏈�(hu矛)鏈変竴浜涚‖鐩ゅ淇濊(h霉)鍗″彲浠ラ€氶亷鐕掑缍�(w菐ng)鍗＄殑BootRom渚嗗(sh铆)鐝�(xi脿n).鍏跺(sh铆)PCI瑷�(sh猫)鍌欑殑ROM鏄彲浠ユ斁鍒颁富鏉緽IOS閲岄潰鐨�.鍟熷嫊(d貌ng)闆昏叇鐨勬檪(sh铆)鍊欎竴妯ｅ彲浠ユ娓�(c猫)鍒伴€欏€�(g猫)ROM骞朵笖姝ｇ⒑璀�(sh铆)鍒ュ畠鏄粈涔堣ō(sh猫)鍌欑殑.AGP鍦ㄩ厤缃笂鍜孭CI寰堝鍦版柟涓€妯�,鎵€浠ュ緢澶氶’鍗＄殑BIOS涔熷彲浠ユ斁鍒颁富鏉緽IOS閲岄潰.閫欏氨鏄偤浠€涔堟澘杓夌殑缍�(w菐ng)鍗℃垜鍊戝緸渚嗘矑鏈夌湅鍒伴亷BOOTROM鐨勫師鍥�.

鏈€鍚庡氨鏄�闆绘簮閮ㄥ垎浜�.澶у鏁�(sh霉)缍�(w菐ng)鍗＄従(xi脿n)鍦ㄩ兘浣跨敤3.3V鎴栨洿浣庣殑闆诲.鏈夌殑鏄洐闆诲鐨�.鍥犳闇€瑕侀浕婧愯綁(zhu菐n)鎻涢浕璺�.

鑰屼笖缍�(w菐ng)鍗＄偤浜嗗(sh铆)鐝�(xi脿n)Wake on line鍔熻兘,蹇呴爤淇濊瓑鍏ㄩ儴鐨凱HY鍜孧AC鐨勬サ灏戜竴閮ㄥ垎濮嬬祩铏曚簬鏈夐浕鐨勭媭鎱�(t脿i),閫欓渶瑕佹妸涓绘澘涓婄殑5V Standby闆诲杞�(zhu菐n)鎻涚偤PHY宸ヤ綔闆诲鐨勯浕璺�.鍦ㄤ富姗�(j墨)闁嬫(j墨)鍚�,PHY鐨勫伐浣滈浕澹撴噳(y墨ng)瑭茶寰�5V杞�(zhu菐n)鍑轰締鐨勯浕澹撴浛浠ｄ互绡€(ji茅)鐪�5V Standby鐨勬秷鑰�.(瑷卞鍔ｈ唱(zh矛)缍�(w菐ng)鍗℃矑鏈夐€欎箞鍋�).

鏈塛ake on line鍔熻兘鐨勭恫(w菐ng)鍗′竴鑸倓鏈変竴鍊�(g猫)WOL鐨勬帴鍙�.閭ｆ槸鍥�?y脿n)闀籆I2.1浠ュ墠娌掓湁PCI瑷�(sh猫)鍌欏枤閱掍富姗�(j墨)鐨勫姛鑳�,鎵€浠ラ渶瑕佽憲涓€鏍圭窔閫氶亷涓绘澘涓婄殑WOL鐨勬帴鍙ｉ€ｅ埌鍗楁⿱閲岄潰浠ュ(sh铆)鐝�(xi脿n)WOL鐨勫姛鑳�.鏂扮殑涓绘澘鍚堢恫(w菐ng)鍗′竴鑸敮鎸丳CI2.2/2.3,鎿�(ku貌)灞曚簡PME#淇¤櫉(h脿o)鍔熻兘,涓嶉渶瑕侀偅鍊�(g猫)鎺ュ彛鑰岄€氶亷PCI绺界窔灏卞彲浠ュ(sh铆)鐝�(xi脿n)鍠氶啋鍔熻兘.

MAC鍜孭HY闆嗘垚鍦ㄤ竴椤嗚姱鐗囩殑浠ュお缍�(w菐ng)鍗�

鍚勯儴浠剁偤:

鈶燫J-45鎺ュ彛

鈶ransformer(闅旈洟璁婂鍣�)

鈶HY鑺墖

鈶AC鑺墖

鈶EPROM

鈶OOTROM鎻掓Ы

鈶OL鎺ラ牠

鈶ф櫠鎸�

鈶ㄩ浕澹撹綁(zhu菐n)鎻涜姱鐗�

鈶㎜ED鎸囩ず鐕�

缍�(w菐ng)鍗＄殑鍔熻兘涓昏鏈夊叐鍊�(g猫):涓€鏄皣闆昏叇鐨勬暩(sh霉)鎿�(j霉)灏佽鐐哄箑,骞堕€氶亷缍�(w菐ng)绶�(灏�(du矛)鐒＄窔缍�(w菐ng)绲�(lu貌)渚嗚灏辨槸闆荤娉�)灏囨暩(sh霉)鎿�(j霉)鐧�(f膩)閫佸埌缍�(w菐ng)绲�(lu貌)涓婂幓;浜屾槸鎺ユ敹缍�(w菐ng)绲�(lu貌)涓婂叾瀹冭ō(sh猫)鍌欏偝閬庝締鐨勫箑,骞跺皣骞€閲嶆柊绲勫悎鎴愭暩(sh霉)鎿�(j霉),鐧�(f膩)閫佸埌鎵€鍦ㄧ殑闆昏叇涓�.缍�(w菐ng)鍗¤兘鎺ユ敹鎵€鏈夊湪缍�(w菐ng)绲�(lu貌)涓婂偝杓�?sh霉)鐢风洏?h脿o),浣嗘甯告儏娉佷笅鍙帴鍙楃櫦(f膩)閫佸埌瑭查浕鑵︾殑骞€鍜屽唬鎾箑,灏囧叾浣欑殑骞€涓熸.鐒跺悗,鍌抽€佸埌绯荤当(t菕ng)CPU鍋氶€�(j矛n)涓€姝ヨ檿鐞�.鐣�(d膩ng)闆昏叇鐧�(f膩)閫佹暩(sh霉)鎿�(j霉)鏅�(sh铆),缍�(w菐ng)鍗＄瓑寰呭悎閬╃殑鏅�(sh铆)闁撳皣鍒嗙祫鎻掑叆鍒版暩(sh霉)鎿�(j霉)娴佷腑.鎺ユ敹绯荤当(t菕ng)閫氱煡闆昏叇娑堟伅鏄惁瀹屾暣鍦板埌閬�(d谩),濡傛灉鍑虹従(xi脿n)鍟忛,灏囪姹傚皪(du矛)鏂归噸鏂扮櫦(f膩)閫�.

鍟�:10BaseT鍜�100BaseTX PHY瀵�(sh铆)鐝�(xi脿n)鏂瑰紡涓嶅悓鐨勫師鍥犱綍鍦�?

绛�:鍏╃ó瀵�(sh铆)鐝�(xi脿n)鐨勫垎绲勬弿杩版湰璩�(zh矛)涓婃槸涓€妯ｇ殑,浣嗗叐鑰呯殑淇′护姗�(j墨)鍒跺畬鍏ㄤ笉鍚�.鍏剁洰鐨勬槸闃绘涓€绋‖浠跺(sh铆)鐝�(xi脿n)瀹规槗鍦拌檿鐞嗗叐绋€熷害.10BaseT閲囩敤鏇煎竟鏂壒绶ㄧ⒓,100BaseTX閲囩敤4B/5B绶ㄧ⒓.

鍟�:浠€涔堟槸鏇煎竟鏂壒绶ㄧ⒓?

绛�:鏇煎竟鏂壒绶ㄧ⒓鍙堢ū鏇煎竟鏂壒鐩镐綅绶ㄧ⒓,瀹冮€氶亷鐩镐綅璁婂寲渚嗗(sh铆)鐝�(xi脿n)姣忓€�(g猫)浣�(鍦�2).閫氬父,鐢ㄤ竴鍊�(g猫)鏅�(sh铆)閻樺懆鏈熶腑閮ㄧ殑涓婂崌娌胯〃绀衡€�1鈥�,涓嬮檷娌胯〃绀衡€�0鈥�.鍛ㄦ湡鏈鐨勭浉浣嶈畩鍖栧彲蹇界暐涓嶈▓(j矛),浣嗘湁鏅�(sh铆)鍙堝彲鑳介渶瑕佸皣閫欑ó鐩镐綅璁婂寲瑷�(j矛)绠楀湪鍏�(n猫i),閫欏彇姹轰簬鍓嶄竴浣嶇殑鍊�.

鍟�:浠€涔堟槸4B/5B绶ㄧ⒓?

绛�:4B/5B绶ㄧ⒓鏄竴绋绶ㄧ⒓鏂瑰紡.瀹冨皣涓€鍊�(g猫)4浣嶇殑濉婄法纰兼垚涓€鍊�(g猫)5浣嶇殑濉�.閫欏氨浣�5浣嶅鍏�(n猫i)姘搁仩(yu菐n)鑷冲皯鍖呭惈2鍊�(g猫)鈥�1鈥濊綁(zhu菐n)鎻�,鎵€浠ュ湪涓€鍊�(g猫)5浣嶅鍏�(n猫i)绺借兘閫�(j矛n)琛屾檪(sh铆)閻樺悓姝�.瑭叉柟娉曢渶瑕�25%鐨勯澶栭枊閵�.

鍟�:缍�(w菐ng)鍗＄殑MAC鍜孭HY闁撶殑闂�(gu膩n)绯�?

绛�:缍�(w菐ng)鍗″伐浣滃湪osi鐨勬渶鍚庡叐灞�,鐗╃悊灞ゅ拰鏁�(sh霉)鎿�(j霉)閺堣矾灞�,鐗╃悊灞ゅ畾缇╀簡鏁�(sh霉)鎿�(j霉)鍌抽€佽垏鎺ユ敹鎵€闇€瑕佺殑闆昏垏鍏変俊铏�(h脿o)銆佺窔璺媭鎱�(t脿i)銆佹檪(sh铆)閻樺熀婧�(zh菙n)銆佹暩(sh霉)鎿�(j霉)绶ㄧ⒓鍜岄浕璺瓑,骞跺悜鏁�(sh霉)鎿�(j霉)閺堣矾灞よō(sh猫)鍌欐彁渚涙(bi膩o)婧�(zh菙n)鎺ュ彛.鐗╃悊灞ょ殑鑺墖绋变箣鐐篜HY.鏁�(sh霉)鎿�(j霉)閺堣矾灞ゅ墖鎻愪緵灏嬪潃姗�(j墨)妲�(g貌u)銆佹暩(sh霉)鎿�(j霉)骞€鐨勬(g貌u)寤�銆佹暩(sh霉)鎿�(j霉)宸尟(cu貌)妾㈡煡銆佸偝閫佹帶鍒�銆佸悜缍�(w菐ng)绲�(lu貌)灞ゆ彁渚涙(bi膩o)婧�(zh菙n)鐨勬暩(sh霉)鎿�(j霉)鎺ュ彛绛夊姛鑳�.浠ュお缍�(w菐ng)鍗′腑鏁�(sh霉)鎿�(j霉)閺堣矾灞ょ殑鑺墖绋变箣鐐篗AC鎺у埗鍣�.寰堝缍�(w菐ng)鍗＄殑閫欏叐鍊�(g猫)閮ㄥ垎鏄仛鍒颁竴璧风殑.浠栧€戜箣闁撶殑闂�(gu膩n)绯绘槸pci绺界窔鎺ac绺界窔,mac鎺hy,phy鎺ョ恫(w菐ng)绶�(鐣�(d膩ng)鐒朵篃涓嶆槸鐩存帴鎺ヤ笂鐨�,閭勬湁涓€鍊�(g猫)璁婂瑁濈疆).

PHY鍜孧AC涔嬮枔鏄浣曞偝閫佹暩(sh霉)鎿�(j霉)鍜岀浉浜掓簼閫氱殑.閫氶亷IEEE瀹氱京鐨勬(bi膩o)婧�(zh菙n)鐨凪II/GigaMII(Media Independed Interfade,浠嬭唱(zh矛)鐛�(d煤)绔嬬晫闈�)鐣岄潰閫ｆ帴MAC鍜孭HY.閫欏€�(g猫)鐣岄潰鏄疘EEE瀹氱京鐨�.MII鐣岄潰?zh猫n)楝焒浜嗙恫(w菐ng)绲�(lu貌)鐨勬墍鏈夋暩(sh霉)鎿�(j霉)鍜屾暩(sh霉)鎿�(j霉)鐨勬帶鍒�.ETHERNET鐨勬帴鍙ｅ(sh铆)璩�(zh矛)鏄疢AC閫氶亷MII绺界窔鎺у埗PHY鐨勯亷绋�.

鍟�:缍�(w菐ng)绶氫笂鍌宠几?sh霉)姘栨倓顥橫淇¤櫉(h脿o)閭勬槸鏁�(sh霉)瀛椾俊铏�(h脿o)?

绛�:鏄ā鎿俊铏�(h脿o).鍥�?y脿n)妯楅紙闉掗緤寰掗偖甯愰仯鎹庣帿鍝棛M鐨勬妧琛�(sh霉).闆栫劧瀹冨偝閫佺殑淇℃伅鏄暩(sh霉)瀛楃殑(骞朵笉鏄偝閫佺殑淇℃伅鏄暩(sh霉)瀛楃殑淇¤櫉(h脿o)灏卞彲浠ュ彨鍋氭暩(sh霉)瀛椾俊铏�(h脿o)).

绨�(ji菐n)鍠殑渚嬪瓙:鎴戝€戠煡閬撻浕瑭辨槸妯℃摤淇¤櫉(h脿o),浣嗘槸鐣�(d膩ng)鎴戝€戞挜铏�(h脿o)涓婄恫(w菐ng)鐨勬檪(sh铆)鍊�,闆昏┍绶氶噷鍌抽€佺殑鏄暩(sh霉)瀛椾俊鎭�,浣嗕俊铏�(h脿o)鏈韩渚濊垔鏄ā鎿殑.鐒惰€孉DSL鍚屾ǎ鏄€氶亷闆昏┍绶氬偝閫佺殑,鍗绘槸鏁�(sh霉)瀛椾俊铏�(h脿o).閫欏彇姹轰簬瀹冨偝鍑哄拰鎺ュ彈閲囩敤鐨勬妧琛�(sh霉).

鍟�:鑻ユ搷浣滅郴绲�(t菕ng)娌掓湁鍔犺級缍�(w菐ng)鍗￠﹨(q奴)鍕�(d貌ng),缍�(w菐ng)鍗￠洊鐒跺湪绯荤当(t菕ng)瑷�(sh猫)鍌欐ü涓�,浣嗙恫(w菐ng)鍗℃帴鍙ｅ壍(chu脿ng)寤轰笉浜�,閭ｇ恫(w菐ng)鍗″(sh铆)闅涜兘涓嶈兘鎺ユ敹鍒版暩(sh霉)鎿�(j霉)?

绛�:閫欓噷闈㈡湁寰堝绱�(x矛)绡€(ji茅), 鎴戞牴鎿�(j霉)Intel缍�(w菐ng)鍗＄殑Spec澶ф瀵簡瀵�, 鎯崇洝閲忓鐨勯€氫織涓€浜�,鎵€浠ユ矑鏈夊埢鎰忕敤Spec閲岀殑琛�(sh霉)瑾�,鍙﹀鏈枃闆栫劧璎涚殑鏄疢AC/PHY,浣嗗厜鍙ｅ崱鐨�(SERDES)涔熸槸椤炰技鐨�.

PCI瑷�(sh猫)鍌欏仛reset浠ュ悗閫�(j矛n)鍏0uninitialized(闈炲垵濮嬪寲鐨凞0鐙€鎱�(t脿i), 鍙冭€働CI闆绘簮绠＄悊瑕�(gu墨)鑼�),姝ゆ檪(sh铆)缍�(w菐ng)鍗＄殑MAC鍜孌MA閮戒笉宸ヤ綔,PHY鏄伐浣滃湪涓€鍊�(g猫)鐗规畩鐨勪綆闆绘簮鐙€鎱�(t脿i)鐨�;

鎿嶄綔绯荤当(t菕ng)鍓�(chu脿ng)寤鸿ō(sh猫)鍌欐ü鏅�(sh铆),鍒濆鍖栭€欏€�(g猫)瑷�(sh猫)鍌�,PCI鍛戒护瀵勫瓨鍣ㄧ殑 Memory Access Enable or the I/O Access Enable bit鏈�(hu矛)琚玡nable, 閫欏氨鏄疍0active.姝ゆ檪(sh铆)PHY/MAC灏变娇鑳戒簡;

PHY琚娇鑳芥噳(y墨ng)瑭插氨鍙互鎺ユ敹鐗╃悊閺堣矾涓婄殑鏁�(sh霉)鎿�(j霉)浜�,鍚﹀墖涓嶈兘鏀跺埌FLP/NLP, PHY灏变笉鑳藉缓绔嬬墿鐞嗛€ｆ帴.浣嗛€欓鍖呬竴鑸槸娴侀噺闁撴瓏鐧�(f膩)閫佺殑;

椹�(q奴)鍕�(d貌ng)绋嬪簭涓€鑸閫氶亷瀵勫瓨鍣ㄤ締鎺у埗PHY, 姣斿鑷嫊(d貌ng)鍗�(xi茅)鍟唖peed/duplex, 鏌ヨ鐗╃悊閺堣矾鐨勭媭鎱�(t脿i)Link up/down;

MAC琚娇鑳藉悗, 濡傛灉娌掓湁椹�(q奴)鍕�(d貌ng)瑷�(sh猫)缃帶鍒跺瘎瀛樺櫒鐨勪竴鍊�(g猫)浣�(CTRL.SLU )鐨勮┍, MAC鍜孭HY鏄笉鑳介€氳▕鐨�, 灏辨槸瑾狹AC涓嶇煡閬揚HY鐨刲ink宸茬稉(j墨ng)ready, 鎵€浠ユ敹涓嶅埌浠讳綍鏁�(sh霉)鎿�(j霉)鐨�.閫欎綅瑷�(sh猫)缃互鍚�, PHY瀹屾垚鑷崝(xi茅)鍟�, 缍�(w菐ng)鍗℃墠鏈�(hu矛)鏈夊€�(g猫)Link change鐨勪腑鏂�,鐭ラ亾鐗╃悊閫ｆ帴宸茬稉(j墨ng)Link UP浜�;

鍗充娇Link宸茬稉(j墨ng)UP, MAC閭勯渶瑕乪nable鎺ユ敹鍣ㄧ殑涓€鍊�(g猫)浣�(RCTL.RXEN ),鍖呮墠鍙互琚帴鏀堕€�(j矛n)渚�,濡傛灉缍�(w菐ng)鍗¤reset,閫欎綅鏄�0,鎰忓懗钁楁墍鏈夌殑鍖呴兘鏈�(hu矛)琚洿鎺rop鎺�,涓嶆渻(hu矛)瀛樺叆缍�(w菐ng)鍗＄殑 FIFO.鑰佺恫(w菐ng)鍗″湪椹�(q奴)鍕�(d貌ng)閫€鍑哄墠鍒╃敤閫欎綅闂�(gu膩n)鎺夋帴鏀�.Intel鐨勬渶鏂板崈鍏嗙恫(w菐ng)鍗＄櫦(f膩)閫佹帴鏀堕殜(du矛)鍒楃殑鍕�(d貌ng)鎱�(t脿i)閰嶇疆灏辨槸渚濋潬閫欏€�(g猫)浣嶇殑,閲嶆柊閰嶇疆鐨勯亷绋嬩竴瀹氳闂�(gu膩n)鎺夋祦閲�;

鐒¤珫椹�(q奴)鍕�(d貌ng)鍔犺級鑸囧惁, 鐧�(f膩)鐢焤eset鍚�,缍�(w菐ng)鍗EPOM閲岀殑mac鍦板潃鏈�(hu矛)瀵叆缍�(w菐ng)鍗＄殑MAC鍦板潃閬庢烤瀵勫瓨鍣�, 椹�(q奴)鍕�(d貌ng)鍙互鍘讳慨鏀归€欏€�(g猫)瀵勫瓨鍣�,鐝�(xi脿n)浠ｇ恫(w菐ng)鍗￠€氬父鏀寔寰堝MAC鍦板潃,涔熷氨鏄,MAC鍦板潃鏄彲浠ヨ杌熶欢瑷�(sh猫)缃殑.渚嬪,Intel鐨勫崈鍏嗙恫(w菐ng)鍗″氨鏀寔16鍊�(g猫)鍠挱 MAC鍦板潃,浣嗗彧鏈�1鍊�(g猫)鏄瓨鍦‥EPROM閲岀殑,鍏跺畠鏄粺浠惰伈绋卞拰瑷�(sh猫)缃殑;

浣嗗鏋滈﹨(q奴)鍕�(d貌ng)娌掓湁鍔犺級,缍�(w菐ng)鍗″凡缍�(j墨ng)鍦ㄨō(sh猫)鍌欐ü涓�,鎿嶄綔绯荤当(t菕ng)瀹屾垚浜嗘椹�1-2鐨勫垵濮嬪寲,姝ゆ檪(sh铆)缍�(w菐ng)鍗＄殑PHY鎳�(y墨ng)瑭叉槸宸ヤ綔鐨�,浣嗗洜?y脿n)闂哴鏈変汉瑷�(sh猫)缃帶鍒朵綅(CTRL.SLU)渚嗚畵MAC鍜孭HY寤虹珛鑱�(li谩n)绯�,鎵€浠AC鏄笉鏀跺寘鐨�.閫欏€�(g猫)鎺у埗浣嶅湪reset鏅�(sh铆)鏈�(hu矛)鍐嶈ō(sh猫)缃垚0;

PHY鍙互琚粺浠惰ō(sh猫)缃姞闆诲拰鏂烽浕, 鏂烽浕鐙€鎱�(t脿i)闄や簡鎺ユ敹绠＄悊鍛戒护浠ュ,涓嶆渻(hu矛)鎺ユ敹鏁�(sh霉)鎿�(j霉).鍙﹀,PHY閭勮兘宸ヤ綔鍦⊿mart Power Down妯″紡涓�,link down灏遍€�(j矛n)鍏ョ渷闆荤媭鎱�(t脿i);

鏈変簺澶氬彛缍�(w菐ng)鍗�,澶氬€�(g猫)缍�(w菐ng)鍙ｅ叡浜竴鍊�(g猫)PHY, 鎵€浠IOS閲岃ō(sh猫)缃甦isbale浜嗘煇鍊�(g猫)缍�(w菐ng)鍙�, 涔熸湭蹇呮渻(hu矛)鎶奝HY鐨勯浕婧愰棞(gu膩n)鎺�,鍙嶉亷渚�,涔熻灏忓績鍦伴棞(gu膩n)鎺塒HY鐨勯浕婧�;

瑕佽┏绱�(x矛)浜嗚ВPHY,鏈€绲傞倓鏄鐔熸倝IEEE浠ュお缍�(w菐ng)鐨勭浉闂�(gu膩n)鍗�(xi茅)璀�.