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銆�銆�SAA7113H鑺墖鎶婂緸CCD閲囬泦渚嗙殑妯℃摤瑕栭牷淇¤櫉杞�(zhu菐n)鍖栨垚Y U V =4 2 2鏍煎紡鐨勬暩(sh霉)瀛楀湒鍍忎俊铏�銆傞�欎簺淇¤櫉鍦ㄥ悓姝ヨ剤娌栫殑浣滅敤涓嬮�插叆閲囬泦鎺у埗鍣�銆傞噰妯ｆ帶鍒跺櫒鍦ㄥ鍋跺牬鎺у埗淇¤櫉涓嬫妸鍦栧儚淇℃伅瀛樺叆SDRAM涓�銆傝┎绯荤当(t菕ng)鍙互瀵︾従(xi脿n)鐢遍殧琛屾巸鎻忓湒鍍忓埌閫愯鍦栧儚鐨勮綁(zhu菐n)鍖栧強瀛樺劜銆�
銆�銆�2.1 妯℃摤瑕栭牷淇¤櫉瑙ｇ⒓
銆�銆�鐢变簬SAA7113H鑺墖鍏锋湁I2C鎺ュ彛锛岃┎妯″鍓囬�氶亷I2C绺界窔渚嗛厤缃甋AA7113H鍒濆鍖栫殑淇℃伅銆傚伐浣滄秹鍙奡AA7113H鐨勫垵濮嬪寲瀛楃殑閰嶇疆銆佸伐浣滄柟寮忕殑閰嶇疆锛涜鍚屾闁嬪鍜岀祼鏉熸蹇椾綅銆佺⒑瀹氫寒搴�銆佽壊搴�銆侀＝鍜屽害鐨勫ぇ灏忎互鍙婅几鍑哄湒鍍忔暩(sh霉)鎿�(j霉)淇¤櫉鐨勬牸寮�銆�
銆�銆�2.2 I2C鎺у埗鎺ュ彛妯″
銆�銆�I2C妯″浣滅偤SAA7113H瀵勫瓨鍣ㄥ垵濮嬮厤缃殑鏁撮珨鎺у埗妯″銆傚叿楂斿彲浠ュ垎鎴怚2C[_]cmd鍜屾暩(sh霉)鎿�(j霉)鍌宠几鍏╁�嬫ā濉�銆侷2C[_]cmd妯″鐐虹磾绲勫悎閭忚集闆昏矾锛屽畬鎴愪俊铏熺殑鐧�(f膩)閫佹帶鍒朵换鍕�锛岄厤鍚坮om[_]data[7.0]鍜宺om[_]addr[7.0]淇¤櫉瀹屾垚鏁�(sh霉)鎿�(j霉)鐨勫皨鍧�鑸囧瓨鍏ョ瓑宸ヤ綔锛涜�屾暩(sh霉)鎿�(j霉)鍌宠几妯″涓昏鍜孖2C[_]cmd妯″涓�璧风祫鍚堟垚I2C鐨勬暩(sh霉)鎿�(j霉)鎺у埗瀵叆妯″锛屽畠涓昏璨犺铂灏岻2C[_]cmd妯″鐨勮几鍑轰俊铏熼�茶绶╁瓨锛屽苟鍦ㄥ叾杓稿嚭绔几鍑篒2C绺界窔鐨勪覆琛屾暩(sh霉)鎿�(j霉)SDA浠ュ強 I2C绺界窔鐨勪覆琛屾檪閻樹俊铏烻CL銆�
銆�銆�鍦�2 I2C鎺у埗妯″鍙婃暩(sh霉)鎿�(j霉)鍌宠几妯″
銆�銆�2.3閲囨ǎ鎺у埗妯″
銆�銆�妯″鍦╒erilog绶ㄧ▼瑾炶█鐨勬帶鍒朵笅锛屾妸SAA7113H杓稿嚭鐨勪竴骞�鐏板害鏁�(sh霉)瀛楄闋诲湒鍍忔暩(sh霉)鎿�(j霉)閫茶濂囧伓鍫寸殑鍒嗛枊瀛樺劜锛岄仈鍒伴殧琛屽埌閫愯鐨勫湒鍍忚綁(zhu菐n)鎻�锛岃垏姝ゅ悓鏅�锛岄�氶亷鎺у埗琛岄噰闆嗘暩(sh霉)鍜屽垪閲囬泦鏁�(sh霉)锛屾豢瓒�720*576銆�25骞�/绉掔殑鍒嗚鲸鐜囩殑瑕佹眰銆�
銆�銆�鍦�3閲囨ǎ鎺у埗鍣ㄦā濉�
銆�銆�2.4 SDRAM鎺у埗瀛樺劜妯″
銆�銆�鍦�4 SDRAM鎺у埗鍙奡DRAM瀛樺劜妯″
銆�銆�SDRAM妯″浣滅偤鏁�(sh霉)鎿�(j霉)鐨勫瓨鍎叉ā濉�锛屽彲浠ュ叿楂斿垎鎴怱DRAM鎺у埗鎺ュ彛妯″浠ュ強SDRAM瀛樺劜妯″(SDRAM)銆係DRAM鎺у埗鎺ュ彛妯″鐢ㄤ簬灏嶆暩(sh霉)鎿�(j霉)瀛樺劜鐨勬帶鍒�锛岀櫦(f膩)鍑烘帶鍒惰畝瀵俊铏熶締浣挎暩(sh霉)鎿�(j霉)瀛樺劜鍒癝DRAM妯″閲岄潰锛汼DRAM妯″鍓囬�氶亷鏈韩鐨勯倧杓瓨鍎插柈鍏�锛屾妸寰濻DRAM鎺у埗鎺ュ彛妯″鍑轰締鐨勬暩(sh霉)鎿�(j霉)瀛樺劜鍒拌嚜韬殑瀛樺劜绌洪枔涓�銆�
銆�銆�3 鏂规妯℃摤浠跨湡鍙婂叿楂斿鐝�(xi脿n)
銆�銆�3.1 閲囨ǎ鎺у埗鍣ㄧ殑鍔熻兘浠跨湡
銆�銆�鍦�5銆�鎺у埗鍣ㄥ悓姝ョ媭鎱�(t脿i)姗�
銆�銆�Idel锛氶粯瑾嶇┖闁戠媭鎱�(t脿i)锛堥枊濮嬫垨寰╀綅鐙�鎱�(t脿i)锛�銆傛鏅傚鏋滄敹鍒版暩(sh霉)鎿�(j霉)8鈥榟ff锛岄�插叆State1,鍏跺畠鎯呮硜鍦ㄦ湰鐙�鎱�(t脿i)鍋滅暀銆�
銆�銆�State1: 闁嬪鎺ユ敹鏁�(sh霉)鎿�(j霉)鐙�鎱�(t脿i)銆傛鏅傛敹鍒版暩(sh霉)鎿�(j霉)8鈥檋00 ,閫插叆State2锛涙敹鍒版暩(sh霉)鎿�(j霉)8鈥檋ff锛屽仠鐣欏湪鏈媭鎱�(t脿i)锛屽叾瀹冩儏娉佽繑鍥濱del銆�
銆�銆�State2锛氭暩(sh霉)鎿�(j霉)纰鸿獚鎴愬姛鐙�鎱�(t脿i)銆傛鏅傝嫢鏀跺埌鏁�(sh霉)鎿�(j霉)8鈥檋00 ,鏁�(sh霉)鎿�(j霉)纰鸿獚鎴愬姛锛屾帴涓嬩締杓稿嚭鍦栧儚瑕栭牷淇¤櫉锛岄�插叆State3锛屽叾瀹冩儏娉佺媭鎱�(t脿i)杞�(zhu菐n)鍒癐del銆�
銆�銆�State3锛氳闋诲湒鍍忔暩(sh霉)鎿�(j霉)鐨勬帴鏀剁媭鎱�(t脿i)锛岃〃鏄庢暩(sh霉)鎿�(j霉)閲囬泦鍙婂偝閫佸嵆灏囬枊濮嬨�傚湪姝ょ媭鎱�(t脿i)涓�锛岃嫢鏀跺埌鏁�(sh霉)鎿�(j霉)8鈥檋c7锛岄�插叆鍦栧儚濂囨暩(sh霉)鍫撮噰闆嗭紱鑻ユ敹鍒版暩(sh霉)鎿�(j霉)8鈥檋80,閫插叆鍦栧儚鍋舵暩(sh霉)鍫撮噰闆�銆傚叾瀹冩儏娉佸洖鍒癐del銆�
銆�銆�State4锛氬鍫村湒鍍忛噰闆嗙媭鎱�(t脿i)銆傚鏁�(sh霉)鍫撮枊濮嬮噰闆�锛屽悓鏅傝几鍑哄牬鍚屾鍙婂鍫翠俊铏熶締鎺у埗瑷堟暩(sh霉)鍣ㄨ▓鏁�(sh霉)銆傝垏姝ゅ悓鏅�锛岀媭鎱�(t脿i)鑷嫊鎭㈠京鍒癐del銆傜偤涓嬩竴娆＄殑鍦栧儚鍫寸殑閲囬泦鍋氬ソ婧栧倷銆�
銆�銆�State5锛氬伓鍫村湒鍍忛噰闆嗙媭鎱�(t脿i)銆傚伓鏁�(sh霉)鍫撮枊濮嬮噰闆�锛屽悓鏅傝几鍑哄牬鍚屾鍙婂伓鍫存帶鍒朵俊铏熶締鎺у埗瑷堟暩(sh霉)鍣ㄨ▓鏁�(sh霉)銆傝垏姝ゅ悓鏅�锛岀媭鎱�(t脿i)灏囪嚜鍕曟仮寰╁埌Idel銆傜偤涓嬩竴娆＄殑鍦栧儚鍫撮噰闆嗗仛濂芥簴鍌欍��
銆�銆�3.2 SDRAM鎺у埗瀛樺劜妯″浠跨湡瀵︾従(xi脿n)
銆�銆�1锛夋暩(sh霉)鎿�(j霉)鐨勭獊鐧�(f膩)寮忚畝鍙�
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銆�銆�鍦�6銆�鏁�(sh霉)鎿�(j霉)鐨勭獊鐧�(f膩)寮忚畝鍙栨檪搴忓湒
銆�銆�2锛夋暩(sh霉)鎿�(j霉)鐨勭獊鐧�(f膩)寮忓鍏�
銆�銆�鏁�(sh霉)鎿�(j霉)鐨勬暣闋佸紡绐佺櫦(f膩)瀵亷绋嬭垏璁�鎿嶄綔椤炰技锛歝md鎺у埗淇¤櫉010b鎺у埗閫茶甯惰嚜鍕曢爯鍏呴浕鐨凷DRAM瀵搷浣�锛宑md[_]ack鎳夌瓟锛孋s[_]n浣庨浕骞宠〃绀鸿姱鐗囬伕涓伐浣溿�傝垏姝ゅ悓鏅�锛屾帶鍒朵俊铏烺as[_]n銆丆as[_]n銆乄e[_]n鐨勫�艰几鍑虹偤011b锛屽皪琛屽湴鍧�鍜屽垪鍦板潃閫茶婵�娲伙紝鐒跺悗鐧�(f膩)鍑�100b瀵帶鍒朵俊铏�銆傜敱浜庝俊铏熺殑瀵叆涓嶉渶瑕佹檪閻樺欢閬诧紝鏁呮鏅傛暩(sh霉)鎿�(j霉)寰濪ATAIN鍙ｈ几鍏�锛岀稉(j墨ng)閬庡瘎瀛樺悗寰濪q瀛樺叆SDRAM鑺墖閲岄潰锛屽緸鑰屽畬鎴愰噰闆嗘暩(sh霉)鎿�(j霉)鐨勫瓨鍎层�傚鍦�7鎵�绀烘槸閲囩敤搴忓垪鏁�(sh霉)瀵叆鏅傜殑modelsim鐨勪豢鐪熷湒銆�
銆�銆�鍦�7銆�鏁�(sh霉)鎿�(j霉)鐨勭獊鐧�(f膩)寮忓鍏ユ檪搴忓湒
銆�銆�4 绲愭潫瑾�
銆�銆�瑭插湒鍍忛噰闆嗗崱绯荤当(t菕ng)鏄熀浜嶧PGA鎶�琛�锛岃粺浠朵笂鍓囬噰鐢╲erilogHDL瀵︾従(xi脿n)銆傛鍦栧儚閲囬泦鍗″畬鍏ㄩ仼鐢ㄤ簬闈滄厠(t脿i)鍦栧儚浠ュ強骞�鏁�(sh霉)涓嶆槸寰堝鐨勫嫊鎱�(t脿i)鍦栧儚銆傜稉(j墨ng)閬庨倧杓垎鏋愬剙涓殑閲囬泦鍒嗘瀽寰楃煡锛屽皪浜庝竴鑸�25骞�锛忕鐨勫湒鍍忛噰闆嗚姹傦紝瑭插湒鍍忛噰闆嗙郴绲�(t菕ng)鍏锋湁寰堝ソ鐨勬晥鏋�銆�
銆�銆�鏈枃鏄噰鐢‵PGA鐨勫湒鍍忛噰闆嗘妧琛擄紝閫氶亷妲嬮�犻噰妯ｆ帶鍣ㄤ締瀵︾従(xi脿n)鍦栧儚淇¤櫉闅旇鍒伴�愯鐨勮綁(zhu菐n)鎻�锛岄�欐ǎ灏遍伩鍏嶄簡鍚屾檪浣跨敤鍏╁�婻AM渚嗗垎鍒ュ瓨鍎插鍫翠俊铏熷拰鍋跺牬淇¤櫉銆傚彟澶栵紝鑸囧偝绲�(t菕ng)鐨凴AM瀛樺劜鍣ㄧ浉姣�锛孲DRAM瀛樺劜鍣ㄥ叿鏈夋洿楂樼殑璁�瀵�熷害銆�
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