{"id":46679,"date":"2023-10-03T10:46:14","date_gmt":"2023-10-03T02:46:14","guid":{"rendered":"https:\/\/www.techphant.cn\/?p=46679"},"modified":"2023-10-03T10:46:14","modified_gmt":"2023-10-03T02:46:14","slug":"dckfhs","status":"publish","type":"post","link":"https:\/\/www.techphant.cn\/blog\/46679.html","title":{"rendered":"DMA\u4e32\u53e3FIFO\u51fd\u6570"},"content":{"rendered":"<p>&emsp;&emsp;<strong>DMA\u4e32\u53e3FIFO\u51fd\u6570\u662f\u4e00\u79cd\u7528\u4e8e\u5728\u4e32\u53e3\u901a\u4fe1\u4e2d\u4f20\u8f93\u6570\u636e\u7684\u51fd\u6570\uff0c\u5b83\u53ef\u4ee5\u6709\u6548\u5730\u63d0\u9ad8\u4f20\u8f93\u6570\u636e\u7684\u901f\u5ea6\u3002<\/strong>\u5b83\u7684\u57fa\u672c\u539f\u7406\u662f\u5c06\u6570\u636e\u5b58\u50a8\u5728\u4e00\u4e2a\u53ef\u91cd\u590d\u4f7f\u7528\u7684\u7f13\u51b2\u533a\uff08FIFO\uff09\u4e2d\uff0c\u7136\u540e\u4f7f\u7528DMA\uff08Direct Memory Access\uff09\u6280\u672f\u8fdb\u884c\u4f20\u8f93\u3002\u5728\u8fd9\u79cd\u673a\u5236\u4e0b\uff0cCPU\u4e0d\u9700\u8981\u76f4\u63a5\u53c2\u4e0e\u6570\u636e\u4f20\u8f93\uff0c\u800c\u662f\u5c06\u6570\u636e\u4f20\u8f93\u4ea4\u7531DMA\u6765\u5904\u7406\uff0c\u4ece\u800c\u5927\u5927\u51cf\u5c11\u4e86CPU\u7684\u8d1f\u62c5\uff0c\u63d0\u9ad8\u4e86\u6570\u636e\u4f20\u8f93\u7684\u6548\u7387\u3002<\/p>\n<h2 style=\"text-align: center;\">DMA\u4e32\u53e3FIFO\u51fd\u6570\u7684\u4f18\u52bf<\/h2>\n<p>&emsp;&emsp;DMA\u4e32\u53e3FIFO\u51fd\u6570\u7684\u4f18\u52bf\u5728\u4e8e\u5b83\u53ef\u4ee5\u6709\u6548\u5730\u63d0\u9ad8\u6570\u636e\u4f20\u8f93\u901f\u5ea6\u3002\u5b83\u7684\u57fa\u672c\u539f\u7406\u662f\u5c06\u6570\u636e\u5b58\u50a8\u5728\u4e00\u4e2a\u53ef\u91cd\u590d\u4f7f\u7528\u7684\u7f13\u51b2\u533a\uff08FIFO\uff09\u4e2d\uff0c\u7136\u540e\u4f7f\u7528DMA\uff08Direct Memory Access\uff09\u6280\u672f\u8fdb\u884c\u4f20\u8f93\u3002\u5728\u8fd9\u79cd\u673a\u5236\u4e0b\uff0cCPU\u4e0d\u9700\u8981\u76f4\u63a5\u53c2\u4e0e\u6570\u636e\u4f20\u8f93\uff0c\u800c\u662f\u5c06\u6570\u636e\u4f20\u8f93\u4ea4\u7531DMA\u6765\u5904\u7406\uff0c\u4ece\u800c\u5927\u5927\u51cf\u5c11\u4e86CPU\u7684\u8d1f\u62c5\uff0c\u63d0\u9ad8\u4e86\u6570\u636e\u4f20\u8f93\u7684\u6548\u7387\u3002<\/p>\n<h3>&emsp;&emsp;FIFO\u7f13\u51b2\u533a\u7684\u4f18\u52bf<\/h3>\n<p>&emsp;&emsp;FIFO\u7f13\u51b2\u533a\u7684\u4f18\u52bf\u5728\u4e8e\u5b83\u53ef\u4ee5\u652f\u6301\u66f4\u5927\u7684\u6570\u636e\u4f20\u8f93\u91cf\uff0c\u56e0\u4e3a\u5b83\u53ef\u4ee5\u5b58\u50a8\u66f4\u591a\u7684\u6570\u636e\u3002\u5b83\u8fd8\u53ef\u4ee5\u66f4\u6709\u6548\u5730\u5229\u7528\u7cfb\u7edf\u8d44\u6e90\uff0c\u56e0\u4e3a\u5b83\u53ef\u4ee5\u66f4\u6709\u6548\u5730\u5c06\u6570\u636e\u4f20\u8f93\u5230\u76ee\u6807\u5730\u5740\uff0c\u800c\u4e0d\u9700\u8981CPU\u53c2\u4e0e\u3002<\/p>\n<h3>&emsp;&emsp;DMA\u6280\u672f\u7684\u4f18\u52bf<\/h3>\n<p>&emsp;&emsp;DMA\u6280\u672f\u7684\u4f18\u52bf\u5728\u4e8e\u5b83\u53ef\u4ee5\u6709\u6548\u5730\u63d0\u9ad8\u6570\u636e\u4f20\u8f93\u901f\u5ea6\u3002\u5b83\u53ef\u4ee5\u76f4\u63a5\u5c06\u6570\u636e\u4ece\u6e90\u5730\u5740\u4f20\u8f93\u5230\u76ee\u6807\u5730\u5740\uff0c\u800c\u4e0d\u9700\u8981CPU\u53c2\u4e0e\uff0c\u4ece\u800c\u5927\u5927\u51cf\u5c11\u4e86CPU\u7684\u8d1f\u62c5\uff0c\u63d0\u9ad8\u4e86\u6570\u636e\u4f20\u8f93\u7684\u6548\u7387\u3002<\/p>\n<h2 style=\"text-align: center;\">DMA\u4e32\u53e3FIFO\u51fd\u6570\u7684\u5e94\u7528<\/h2>\n<p>&emsp;&emsp;DMA\u4e32\u53e3FIFO\u51fd\u6570\u53ef\u4ee5\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5404\u79cd\u4e32\u53e3\u901a\u4fe1\u7cfb\u7edf\u4e2d\uff0c\u5982\u4e32\u53e3\u7f51\u7edc\u3001\u84dd\u7259\u7b49\u3002\u5b83\u53ef\u4ee5\u6709\u6548\u5730\u63d0\u9ad8\u6570\u636e\u4f20\u8f93\u901f\u5ea6\uff0c\u51cf\u5c11CPU\u7684\u8d1f\u62c5\uff0c\u63d0\u9ad8\u6570\u636e\u4f20\u8f93\u7684\u6548\u7387\u3002\u6b64\u5916\uff0c\u5b83\u8fd8\u53ef\u4ee5\u652f\u6301\u66f4\u5927\u7684\u6570\u636e\u4f20\u8f93\u91cf\uff0c\u56e0\u4e3a\u5b83\u53ef\u4ee5\u5b58\u50a8\u66f4\u591a\u7684\u6570\u636e\u3002<\/p>\n<h2 style=\"text-align: center;\">\u603b\u7ed3<\/h2>\n<p>&emsp;&emsp;<strong>DMA\u4e32\u53e3FIFO\u51fd\u6570\u662f\u4e00\u79cd\u7528\u4e8e\u5728\u4e32\u53e3\u901a\u4fe1\u4e2d\u4f20\u8f93\u6570\u636e\u7684\u51fd\u6570\uff0c\u5b83\u53ef\u4ee5\u6709\u6548\u5730\u63d0\u9ad8\u4f20\u8f93\u6570\u636e\u7684\u901f\u5ea6\u3002<\/strong>\u5b83\u7684\u57fa\u672c\u539f\u7406\u662f\u5c06\u6570\u636e\u5b58\u50a8\u5728\u4e00\u4e2a\u53ef\u91cd\u590d\u4f7f\u7528\u7684\u7f13\u51b2\u533a\uff08FIFO\uff09\u4e2d\uff0c\u7136\u540e\u4f7f\u7528DMA\uff08Direct Memory Access\uff09\u6280\u672f\u8fdb\u884c\u4f20\u8f93\uff0c\u4ece\u800c\u5927\u5927\u51cf\u5c11\u4e86CPU\u7684\u8d1f\u62c5\uff0c\u63d0\u9ad8\u4e86\u6570\u636e\u4f20\u8f93\u7684\u6548\u7387\u3002DMA\u4e32\u53e3FIFO\u51fd\u6570\u53ef\u4ee5\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5404\u79cd\u4e32\u53e3\u901a\u4fe1\u7cfb\u7edf\u4e2d\uff0c\u5982\u4e32\u53e3\u7f51\u7edc\u3001\u84dd\u7259\u7b49\uff0c\u4ece\u800c\u652f\u6301\u66f4\u5927\u7684\u6570\u636e\u4f20\u8f93\u91cf\uff0c\u63d0\u9ad8\u6570\u636e\u4f20\u8f93\u901f\u5ea6\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>DMA\u4e32\u53e3FIFO\u51fd\u6570\u662f\u4e00\u79cd\u7528\u4e8e\u5728\u4e32\u53e3\u901a\u4fe1\u4e2d\u4f20\u8f93\u6570\u636e\u7684\u51fd\u6570\uff0c\u5b83\u53ef\u4ee5\u6709\u6548\u5730\u63d0\u9ad8\u4f20\u8f93\u6570\u636e\u7684\u901f\u5ea6\u3002\u5b83\u7684\u57fa\u672c\u539f\u7406\u662f\u5c06\u6570\u636e\u5b58\u50a8\u5728\u4e00\u4e2a\u53ef\u91cd\u590d\u4f7f\u7528\u7684\u7f13<\/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-46679","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\/46679","targetHints":{"allow":["GET"]}}],"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=46679"}],"version-history":[{"count":0,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts\/46679\/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=46679"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/categories?post=46679"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/tags?post=46679"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}