{"id":8917,"date":"2019-05-31T00:00:00","date_gmt":"2019-05-31T00:00:00","guid":{"rendered":""},"modified":"2019-05-31T00:00:00","modified_gmt":"2019-05-31T00:00:00","slug":"37989-26639","status":"publish","type":"post","link":"http:\/\/www.cooxp.com\/dianlutu\/37989-26639.htm","title":{"rendered":"\u57fa\u4e8eCAN\u603b\u7ebf\u4e0e\u4ee5\u592a\u7f51\u7684\u5d4c\u5165\u5f0f\u7f51\u5173\u7535\u8def\u8bbe\u8ba1 – \u5d4c\u5165\u5f0f\u7c7b\u7535\u5b50\u7535\u8def\u56fe"},"content":{"rendered":"

\u3000\u3000\u63d0\u51fa\u4e00\u79cd\u5de5\u4e1a\u73b0\u573a\u603b\u7ebf\u4e0e\u4ee5\u592a\u7f51\u4e92\u8054\u65b9\u6cd5\uff0c\u4ecb\u7ecd\u4ee5\u592a\u7f51\u4e0eCAN\u73b0\u573a\u603b\u7ebf\u4e4b\u95f4\u534f\u8bae\u8f6c\u6362\u7f51\u5173\u7684\u8bbe\u8ba1\u4e0e\u5b9e\u73b0\uff0c\u91c7\u7528AT89C55\u4f5c\u4e3a\u4e3b\u5904\u7406\u5668\uff0c\u901a\u8fc7\u4e24\u4e2a\u63a5\u53e3\u82af\u7247\u5b9e\u73b0CAN\u603b\u7ebf\u4e0e\u4ee5\u592a\u7f51\u7684\u4e92\u8fde\uff0c\u5206\u522b\u7ed9\u51fa\u5176\u786c\u4ef6\u7ed3\u6784\u548c\u8f6f\u4ef6\u8bbe\u8ba1\u601d\u60f3\u3002\u4e3a\u4f01\u4e1a\u4fe1\u606f\u7f51\u7edc\u4e0e\u63a7\u5236\u7f51\u7edc\u96c6\u6210\u63d0\u4f9b\u4e00\u79cd\u53ef\u884c\u7684\u65b9\u6cd5\u3002<\/p>\n

\u3000\u3000\u4ee5\u592a\u7f51\u63a5\u53e3\u6a21\u5757\uff1a<\/strong>\u8be5\u7cfb\u7edf\u9009\u62e9\u4e86\u6027\u80fd\u4ef7\u683c\u6bd4\u8f83\u9ad8\u7684Atmel\u516c\u53f8\u751f\u4ea7\u7684AT89C55 \u5355\u7247\u673a\u3002\u5b83\u662f\u9762\u5411\u6d4b\u63a7\u5bf9\u8c61\u548c\u5d4c\u5165\u5f0f\u5e94\u7528\u7684\uff0c\u6240\u4ee5\u5b83\u7684\u4f53\u7cfb\u7ed3\u6784\u4ee5\u53caCPU\u3001\u6307\u4ee4\u7cfb\u7edf\u3001\u5916\u56f4\u5355\u5143\u7535\u8def\u90fd\u662f\u6309\u7167\u8fd9\u79cd\u8981\u6c42\u4e13\u95e8\u8bbe\u8ba1\u7684\u3002\u5b83\u5185\u90e8\u5e26\u9ad8\u8fbe20 KB\u7684FLASH\u7a0b\u5e8f\u5b58\u50a8\u5668\uff0cAT89C55\u5b8c\u5168\u517c\u5bb98051\u6307\u4ee4\u96c6\uff0c\u7247\u4e0aFLASH\u65b9\u4fbf\u4e86\u4f7f\u7528\u8005\u8fdb\u884c\u5728\u7ebf\u7f16\u7a0b\uff0c\u5de5\u4f5c\u901f\u7387\u6700\u9ad8\u53ef\u8fbe33 MHz\uff0c256 B\u7684\u5185\u90e8RAM\uff0c32\u4e2a\u53ef\u7f16\u7a0b\u7684I\uff0fO\u53e3\uff0c3\u4e2a16\u4f4d\u7684\u5b9a\u65f6\uff0f\u8ba1\u6570\u5668\uff0c8\u4e2a\u4e2d\u65ad\u6e90\uff0c\u652f\u6301\u4f4e\u529f\u8017\u7684\u7a7a\u95f2\u5de5\u4f5c\u6a21\u5f0f\u3002\u4ee5\u592a\u7f51\u63a5\u53e3\u9009\u7528\u7684\u662fRTL8019AS\u82af\u7247\uff0c\u5b83\u662f\u7531Realtek\u516c\u53f8\u751f\u4ea7\u7684\u4e00\u79cd\u9ad8\u5ea6\u96c6\u6210\u7684\u4ee5\u592a\u7f51\u63a7\u5236\u5668\uff0c\u80fd\u5b9e\u73b0\u4ee5\u592a\u7f51\u5a92\u4ecb\u8bbf\u95ee\u5c42\uff08MAC\uff09\u548c\u7269\u7406\u5c42\uff08PHY\uff09\u7684\u5168\u90e8\u529f\u80fd\u3002RTL8019AS\u5185\u90e8\u6709\u4e24\u4e2aRAM\u533a\u57df\uff1a\u4e00\u662f16 KB\uff0c\u5730\u5740\u4e3a0x4000\uff5e0x7fff\uff0c\u8981\u63a5\u6536\u548c\u53d1\u9001\u6570\u636e\u5305\u5fc5\u987b\u901a\u8fc7DMA\u8bfb\u5199RTL8019AS\u5185\u90e8\u768416 KB\u7684RAM\uff0c\u5b83\u5b9e\u9645\u4e0a\u662f\u53cc\u7aef\u53e3RAM\uff0c\u5373\u6709\u4e24\u6761\u603b\u7ebf\u4e0e\u5176\u8fde\u63a5\uff0c\u4e00\u6761\u603b\u7ebf\u7528\u4e8eRTL8019AS\u8bfb\uff0f\u5199\u6216\u5199\uff0f\u8bfb\u8be5RAM\uff0c\u5373\u672c\u5730DMA\uff1b\u53e6\u4e00\u6761\u603b\u7ebf\u7528\u4e8e\u5355\u7247\u673a\u8bfb\u6216\u5199\u8be5RAM\uff0c\u5373\u8fdc\u7a0bDMA\uff1b\u4e8c\u662f32\u4e2a\u5b57\u8282\uff0c\u5730\u5740\u4e3a0x0000\uff5e0x001F\uff0c\u7528\u4e8e\u5b58\u50a8\u4ee5\u592a\u7f51\u7269\u7406\u5730\u5740\u3002\u4e3b\u63a7\u82af\u7247\u548c\u4ee5\u592a\u7f51\u63a5\u53e3\u82af\u7247\u7684\u786c\u4ef6\u63a5\u53e3\u539f\u7406\u56fe\u89c1\u56fe2\u3002\u503c\u5f97\u6ce8\u610f\u7684\u662f\u7531\u4e8e\u4ee5\u592a\u7f51\u7684\u5305\u6700\u5927\u53ef\u4ee5\u8d85\u8fc71 500\u4e2a\u5b57\u8282\uff0cAT89C55\u7684\u7247\u5185RAM\u53ea\u6709256\u4e2a\u5b57\u8282\uff0c\u56e0\u6b64\u65e0\u6cd5\u5b58\u50a8\u8fd9\u4e48\u5927\u7684\u5305\uff0c\u6240\u4ee5\u8fd9\u91cc\u6269\u5c55\u4e86\u4e00\u4e2a32 KB\u7684\u5916\u90e8RAM\uff0c\u8fd9\u6837\u540c\u65f6\u4e5f\u80fd\u63d0\u9ad8\u5355\u7247\u673a\u7684\u6570\u636e\u4f20\u8f93\u901f\u5ea6\u3002<\/p>\n

\"\u57fa\u4e8eCAN\u603b\u7ebf\u4e0e\u4ee5\u592a\u7f51\u7684\u5d4c\u5165\u5f0f\u7f51\u5173\u7535\u8def\u8bbe\u8ba1\"<\/p>\n

\u3000\u3000CAN\u63a5\u53e3\u6a21\u5757\uff1a<\/strong>\u7ec4\u6210CAN\u7cfb\u7edf\u7684\u4e3b\u8981\u5668\u4ef6\u662fCAN\u63a7\u5236\u5668\u548c\u6536\u53d1\u5668\u3002\u8be5\u8bbe\u8ba1\u4e2d\uff0cCAN\u63a5\u53e3\u6a21\u5757\u9009\u7528 SJA1000\u82af\u7247\u548cPCA82C250\u82af\u7247\u3002SJA1000\u662f\u4e00\u4e2a\u72ec\u7acb\u7684CAN\u63a7\u5236\u5668\uff0c\u5b83\u662fPhilips\u516c\u53f8\u53e6\u4e00\u4e2aCAN\u63a7\u5236\u5668PCA82C200\u7684\u66ff\u4ee3\u4ea7\u54c1\uff0c\u4e14\u589e\u52a0\u4e86\u4e00\u79cd\u65b0\u7684\u5de5\u4f5c\u6a21\u5f0f\uff08Peli CAN\uff09\uff0c\u8fd9\u79cd\u6a21\u5f0f\u652f\u6301CAN 2\uff0e0B\u534f\u8bae\u3002SJA1000\u4e3b\u8981\u5b8c\u6210CAN\u7684\u901a\u4fe1\u534f\u8bae\uff0c\u5b9e\u73b0\u62a5\u6587\u7684\u88c5\u914d\u548c\u62c6\u5206\u3001\u63a5\u6536\u4fe1\u606f\u7684\u8fc7\u6ee4\u548c\u6821\u9a8c\u7b49\u3002<\/p>\n

\"\u57fa\u4e8eCAN\u603b\u7ebf\u4e0e\u4ee5\u592a\u7f51\u7684\u5d4c\u5165\u5f0f\u7f51\u5173\u7535\u8def\u8bbe\u8ba1\"<\/p>\n

\u3000\u3000PCA82C250\u662fCAN\u63a7\u5236\u5668\u4e0e\u7269\u7406\u603b\u7ebf\u4e4b\u95f4\u7684\u63a5\u53e3\uff0c\u4e3b\u8981\u7528\u4e8e\u589e\u5f3a\u7cfb\u7edf\u7684\u9a71\u52a8\u80fd\u529b\u3002\u91c7\u7528\u6536\u53d1\u5668\u7684\u7cfb\u7edf\u4e2d\uff0c\u8282\u70b9\u6570\u81f3\u5c11\u53ef\u4ee5\u8fbe\u5230110\u4e2a\uff0c\u540c\u65f6\u8fd8\u5177\u6709\u964d\u4f4e\u5c04\u9891\u5e72\u6270\uff08RFI\uff09\u548c\u5f88\u5f3a\u7684\u6297\u7535\u78c1\u5e72\u6270 \uff08EMI\uff09\u80fd\u529b\u3002\u5728\u5904\u7406\u8fd9\u90e8\u5206\u7535\u8def\u65f6\uff0c\u6709\u51e0\u4e2a\u5730\u65b9\u8981\u7279\u522b\u6ce8\u610f\uff1a<\/p>\n

\u3000\u3000\uff081\uff09\u6676\u632f\u7535\u8def\u7684\u95ee\u9898\u300289C55\u548cSJA1000\u90fd\u5e94\u8be5\u6709\u5404\u81ea\u72ec\u7acb\u7684\u6676\u632f\u7535\u8def\uff0c\u4e0d\u80fd\u591f\u7528SJA1000\u7684\u65f6\u949f\u8f93\u51fa\u4fe1\u53f7CLKOUT\u6765\u9a71\u52a8\u5355\u7247\u673a\u3002<\/p>\n

\u3000\u3000\uff082\uff09\u590d\u4f4d\u5f15\u811a\u7684\u95ee\u9898\u3002\u867d\u7136SJA1000\u7684\u590d\u4f4d\u662f\u4f4e\u7535\u5e73\uff0c\u4f46\u4e0d\u80fd\u901a\u8fc7\u4e00\u4e2a\u975e\u95e8\u76f4\u63a5\u8fde\u63a5\u5355\u7247\u673a\u7684\u590d\u4f4d\u5f15\u811a\u3002\u4e00\u822c\u5bf9\u89e3\u51b3\u590d\u4f4d\u5f15\u811a\u95ee\u9898\u6709\u4e24\u79cd\u65b9\u5f0f\uff1a\u7b2c\u4e00\u79cd\u662f\u4f7f\u7528\u5355\u7247\u673a\u7684I\uff0fO\u5f15\u811a\u63a7\u5236SJA\u7684\u590d\u4f4d\u5f15\u811a\uff0c\u5176\u597d\u5904\u662f\u5355\u7247\u673a\u53ef\u4ee5\u5b8c\u5168\u63a7\u5236SJA\u7684\u590d\u4f4d\u8fc7\u7a0b\uff1b\u7b2c\u4e8c\u79cd\u662f\u91c7\u7528\u9002\u5f53\u7684\u590d\u4f4d\u82af\u7247\uff0c\u4e3a\u4e86\u964d\u4f4e\u6210\u672c\uff0c\u8be5\u8bbe\u8ba1\u91c7\u53d6\u7684\u662f\u7b2c\u4e00\u79cd\u65b9\u6cd5\u3002<\/p>\n

\u3000\u3000\uff083\uff09RX1\u5f15\u811a\u7684\u7535\u4f4d\u5fc5\u987b\u7ef4\u6301\u5728\u7ea60\uff0e5 VCC\u4e0a\uff0c\u5426\u5219\u5c06\u4e0d\u80fd\u5f62\u6210CAN\u534f\u8bae\u6240\u8981\u6c42\u7684\u903b\u8f91\u7535\u5e73\u3002<\/p>\n

\u3000\u3000\uff084\uff09\u4e00\u5b9a\u8981\u6ce8\u610f\u7535\u7f06\u7684\u7ec8\u7aef\u963b\u6297\u5339\u914d\uff0c\u5b83\u76f4\u63a5\u5f71\u54cdCAN\u603b\u7ebf\u662f\u5426\u80fd\u6b63\u5e38\u5de5\u4f5c\u548c\u7f51\u7edc\u6027\u80fd\u3002CAN\u63a5\u53e3\u6a21\u5757\u7684\u786c\u4ef6\u7535\u8def\u56fe\u89c1\u56fe3\uff0c\u5728PCA82C250\u7684RS\u811a\u4e0a\u63a5\u6709\u4e00\u4e2a\u659c\u7387\u7535\u963bR\uff0c\u53ef\u6839\u636e\u603b\u7ebf\u901a\u4fe1\u901f\u5ea6\u9002\u5f53\u8c03\u6574\u7535\u963b\u7684\u5927\u5c0f\u3002<\/p>\n

\u3002 \uff08\u672c\u6587\u6765\u6e90\u7f51\u53cb\u4e0a\u4f20\uff0c\u5982\u6709\u4fb5\u6743\uff0c\u53ef\u8054\u7cfb\u7ba1\u7406\u5458\u5220\u9664\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"

\u3000\u3000\u63d0\u51fa\u4e00\u79cd\u5de5\u4e1a\u73b0\u573a\u603b\u7ebf\u4e0e\u4ee5\u592a\u7f51\u4e92\u8054\u65b9\u6cd5\uff0c\u4ecb\u7ecd\u4ee5\u592a\u7f51\u4e0eCAN\u73b0\u573a\u603b\u7ebf\u4e4b\u95f4\u534f\u8bae\u8f6c\u6362\u7f51\u5173\u7684\u8bbe\u8ba1\u4e0e\u5b9e\u73b0\uff0c\u91c7\u7528AT89 […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[46],"tags":[],"_links":{"self":[{"href":"http:\/\/www.cooxp.com\/wp-json\/wp\/v2\/posts\/8917"}],"collection":[{"href":"http:\/\/www.cooxp.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.cooxp.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.cooxp.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"http:\/\/www.cooxp.com\/wp-json\/wp\/v2\/comments?post=8917"}],"version-history":[{"count":0,"href":"http:\/\/www.cooxp.com\/wp-json\/wp\/v2\/posts\/8917\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.cooxp.com\/wp-json\/wp\/v2\/media?parent=8917"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.cooxp.com\/wp-json\/wp\/v2\/categories?post=8917"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.cooxp.com\/wp-json\/wp\/v2\/tags?post=8917"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}