{"id":57890,"date":"2023-10-20T12:33:12","date_gmt":"2023-10-20T04:33:12","guid":{"rendered":"https:\/\/www.techphant.cn\/?p=57890"},"modified":"2023-10-20T12:33:12","modified_gmt":"2023-10-20T04:33:12","slug":"nckdtgsjcssddyxff","status":"publish","type":"post","link":"https:\/\/www.techphant.cn\/blog\/57890.html","title":{"rendered":"N32\u4e32\u53e3DMA\uff1a\u63d0\u9ad8\u6570\u636e\u4f20\u8f93\u901f\u5ea6\u7684\u6709\u6548\u65b9\u6cd5"},"content":{"rendered":"

  N32\u4e32\u53e3DMA\uff08Direct Memory Access\uff09\u662f\u4e00\u79cd\u63d0\u9ad8\u6570\u636e\u4f20\u8f93\u901f\u5ea6\u7684\u6709\u6548\u65b9\u6cd5\uff0c\u5b83\u80fd\u591f\u4ece\u4e3b\u673a\u8bbe\u5907\uff08\u5982\u786c\u76d8\uff09\u8bfb\u53d6\u5927\u91cf\u6570\u636e\uff0c\u5e76\u5c06\u5176\u76f4\u63a5\u4f20\u8f93\u5230\u5185\u5b58\u4e2d\uff0c\u800c\u4e0d\u9700\u8981CPU\u7684\u53c2\u4e0e\u3002\u5b83\u7684\u4f18\u70b9\u662f\u53ef\u4ee5\u5927\u5927\u63d0\u9ad8\u6570\u636e\u4f20\u8f93\u901f\u5ea6\uff0c\u4ece\u800c\u63d0\u5347\u7cfb\u7edf\u6027\u80fd\u3002<\/p>\n

N32\u4e32\u53e3DMA\u7684\u5de5\u4f5c\u539f\u7406<\/h2>\n

  N32\u4e32\u53e3DMA\u7684\u5de5\u4f5c\u539f\u7406\u662f\uff0c\u5f53\u4e3b\u673a\u8bbe\u5907\uff08\u5982\u786c\u76d8\uff09\u51c6\u5907\u597d\u53d1\u9001\u6570\u636e\u65f6\uff0c\u5b83\u4f1a\u53d1\u51fa\u4e00\u4e2a\u4e2d\u65ad\u4fe1\u53f7\uff0c\u8be5\u4fe1\u53f7\u4f1a\u88abN32\u4e32\u53e3DMA\u63a7\u5236\u5668\u63a5\u6536\u5230\uff0c\u5b83\u4f1a\u68c0\u67e5\u8be5\u4fe1\u53f7\uff0c\u5e76\u89e3\u7801\u540e\u5c06\u6570\u636e\u4f20\u8f93\u5230\u5185\u5b58\u4e2d\u3002<\/p>\n

  N32\u4e32\u53e3DMA\u63a7\u5236\u5668\u4f1a\u68c0\u67e5\u5185\u5b58\u4e2d\u7684\u5730\u5740\uff0c\u7136\u540e\u628a\u6570\u636e\u4f20\u8f93\u5230\u8be5\u5730\u5740\uff0c\u800c\u4e0d\u9700\u8981CPU\u7684\u53c2\u4e0e\u3002\u5f53\u6570\u636e\u4f20\u8f93\u5b8c\u6210\u540e\uff0cN32\u4e32\u53e3DMA\u63a7\u5236\u5668\u4f1a\u53d1\u51fa\u4e00\u4e2a\u4e2d\u65ad\u4fe1\u53f7\uff0c\u901a\u77e5CPU\u6570\u636e\u4f20\u8f93\u5df2\u7ecf\u5b8c\u6210\uff0cCPU\u53ef\u4ee5\u7ee7\u7eed\u5904\u7406\u5176\u4ed6\u4efb\u52a1\u3002<\/p>\n

N32\u4e32\u53e3DMA\u7684\u4f18\u70b9<\/h2>\n

  N32\u4e32\u53e3DMA\u7684\u4f18\u70b9\u975e\u5e38\u660e\u663e\uff0c\u5b83\u53ef\u4ee5\u5927\u5927\u63d0\u9ad8\u6570\u636e\u4f20\u8f93\u901f\u5ea6\uff0c\u4ece\u800c\u63d0\u5347\u7cfb\u7edf\u6027\u80fd\u3002\u53e6\u5916\uff0cN32\u4e32\u53e3DMA\u8fd8\u53ef\u4ee5\u51cf\u5c11CPU\u7684\u8d1f\u62c5\uff0c\u8ba9CPU\u4e13\u6ce8\u4e8e\u5176\u4ed6\u4efb\u52a1\uff0c\u4ece\u800c\u66f4\u6709\u6548\u5730\u5229\u7528CPU\u7684\u8d44\u6e90\u3002<\/p>\n

  \u51cf\u5c11CPU\u8d1f\u62c5<\/h3>\n

  N32\u4e32\u53e3DMA\u53ef\u4ee5\u51cf\u5c11CPU\u7684\u8d1f\u62c5\uff0c\u56e0\u4e3a\u5b83\u53ef\u4ee5\u5b8c\u5168\u72ec\u7acb\u4e8eCPU\u8fd0\u884c\uff0c\u5b8c\u5168\u4e0d\u9700\u8981CPU\u7684\u53c2\u4e0e\uff0c\u4ece\u800c\u8ba9CPU\u4e13\u6ce8\u4e8e\u5176\u4ed6\u4efb\u52a1\uff0c\u4ece\u800c\u66f4\u6709\u6548\u5730\u5229\u7528CPU\u7684\u8d44\u6e90\u3002<\/p>\n

  \u63d0\u9ad8\u6570\u636e\u4f20\u8f93\u901f\u5ea6<\/h3>\n

  N32\u4e32\u53e3DMA\u53ef\u4ee5\u5927\u5927\u63d0\u9ad8\u6570\u636e\u4f20\u8f93\u901f\u5ea6\uff0c\u5b83\u53ef\u4ee5\u5904\u7406\u5927\u91cf\u7684\u6570\u636e\uff0c\u800c\u4e0d\u9700\u8981CPU\u7684\u53c2\u4e0e\uff0c\u4ece\u800c\u63d0\u5347\u7cfb\u7edf\u6027\u80fd\u3002<\/p>\n

\u603b\u7ed3<\/h2>\n

  N32\u4e32\u53e3DMA\u662f\u4e00\u79cd\u63d0\u9ad8\u6570\u636e\u4f20\u8f93\u901f\u5ea6\u7684\u6709\u6548\u65b9\u6cd5\uff0c\u5b83\u53ef\u4ee5\u5927\u5927\u63d0\u9ad8\u6570\u636e\u4f20\u8f93\u901f\u5ea6\uff0c\u4ece\u800c\u63d0\u5347\u7cfb\u7edf\u6027\u80fd\uff0c\u8fd8\u53ef\u4ee5\u51cf\u5c11CPU\u7684\u8d1f\u62c5\uff0c\u8ba9CPU\u4e13\u6ce8\u4e8e\u5176\u4ed6\u4efb\u52a1\uff0c\u4ece\u800c\u66f4\u6709\u6548\u5730\u5229\u7528CPU\u7684\u8d44\u6e90\u3002<\/strong>N32\u4e32\u53e3DMA\u7684\u5de5\u4f5c\u539f\u7406\u662f\uff0c\u5f53\u4e3b\u673a\u8bbe\u5907\uff08\u5982\u786c\u76d8\uff09\u51c6\u5907\u597d\u53d1\u9001\u6570\u636e\u65f6\uff0c\u5b83\u4f1a\u53d1\u51fa\u4e00\u4e2a\u4e2d\u65ad\u4fe1\u53f7\uff0c\u8be5\u4fe1\u53f7\u4f1a\u88abN32\u4e32\u53e3DMA\u63a7\u5236\u5668\u63a5\u6536\u5230\uff0c\u5b83\u4f1a\u68c0\u67e5\u8be5\u4fe1\u53f7\uff0c\u5e76\u89e3\u7801\u540e\u5c06\u6570\u636e\u4f20\u8f93\u5230\u5185\u5b58\u4e2d\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

N32\u4e32\u53e3DMA\uff08DirectMemoryAccess\uff09\u662f\u4e00\u79cd\u63d0\u9ad8\u6570\u636e\u4f20\u8f93\u901f\u5ea6\u7684\u6709\u6548\u65b9\u6cd5\uff0c\u5b83\u80fd\u591f\u4ece\u4e3b\u673a\u8bbe\u5907\uff08\u5982\u786c\u76d8\uff09\u8bfb\u53d6\u5927\u91cf\u6570\u636e\uff0c\u5e76\u5c06\u5176\u76f4\u63a5\u4f20\u8f93\u5230\u5185\u5b58\u4e2d\uff0c\u800c\u4e0d\u9700\u8981CP<\/p>\n","protected":false},"author":1,"featured_media":4132,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[36],"tags":[69],"class_list":["post-57890","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-cktx"],"_links":{"self":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts\/57890"}],"collection":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/comments?post=57890"}],"version-history":[{"count":0,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts\/57890\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/media\/4132"}],"wp:attachment":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/media?parent=57890"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/categories?post=57890"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/tags?post=57890"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}