{"id":14,"date":"2023-06-05T13:38:58","date_gmt":"2023-06-05T05:38:58","guid":{"rendered":"http:\/\/pro369.com\/money\/?p=14"},"modified":"2019-05-13T15:34:00","modified_gmt":"2019-05-13T15:34:00","slug":"usb-otg%e6%8a%80%e8%a1%93%e7%b0%a1%e4%bb%8b","status":"publish","type":"post","link":"https:\/\/por.tw\/money\/usb-otg%e6%8a%80%e8%a1%93%e7%b0%a1%e4%bb%8b\/","title":{"rendered":"USB OTG\u6280\u8853\u7c21\u4ecb"},"content":{"rendered":"

USB OTG\u6280\u8853\u7c21\u4ecb<\/strong><\/font> <\/p>\n

\n
OTG\u662fOn The Go\u7684\u7e2e\u5beb<\/strong><\/font>\uff0c\u5728\u8d8a\u4f86\u8d8a\u591a\u7684USB\u88dd\u7f6e\u51fa\u73fe\u5f8c\uff0c\u6f38\u6f38\u6709\u90e8\u5206\u88dd\u7f6e\u60f3\u8981\u812b\u96e2\u96fb\u8166\u7684\u7ba1\u675f\u4e92\u76f8\u9023\u7d50\uff0c\u4f46\u662fUSB\u820a\u6709\u7684\u67b6\u69cb\u9650\u5236\u4e86USB\u88dd\u7f6e\u9593\u9023\u7d50\u7684\u53ef\u80fd\u6027\u3002\u6240\u4ee5\u7576\u5169 \u500bUSB\u88dd\u7f6e\u78b0\u5728\u4e00\u8d77\uff0c\u6c92\u6709\u4efb\u4f55\u4e00\u7aef\u53ef\u4ee5\u505a\u4e3b\u3002\u5c0d\u6b64\uff0cUSB\u5354\u6703\u53c8\u63a8\u51fa\u4e86USB OTG\u7684\u898f\u7bc4\u4f86\u5f4c\u88dc\u9019\u6a23\u5b50\u7684\u7f3a\u9677\u3002<\/p>\n

USB OTG\u4e26\u4e0d\u662f\u4e00\u500b\u7368\u7acb\u65bcUSB 2.0\u5b58\u5728\u7684\u898f\u7bc4\uff0c\u6240\u6709\u5728USB OTG\u4e2d\u672a\u63d0\u5230\u7684\u4e8b\u9805\u90fd\u5fc5\u9808\u4ee5USB 2.0\u7684\u898f\u7bc4\u70ba\u6e96\u3002\u56e0\u6b64USB OTG\u5b58\u5728\u7684\u76ee\u7684\u50c5\u5728\u65bc\u63d0\u4f9b\u4e00\u500b\u65b9\u5f0f\uff0c\u8b93\u5169\u500bUSB\u88dd\u7f6e\u5f97\u4ee5\u9023\u7d50\u3002USB OTG 1.0\u4e2d\u63d0\u5230\u4e00\u500b\u5177\u5099\u96d9\u91cd\u89d2\u8272\u88dd\u7f6e\uff08Dual-role device\uff09\u7684\u6982\u5ff5\u3002\u5c31\u662f\u8aaa\u4e00\u500bOTG\u7684\u88dd\u7f6e\uff0c\u53ef\u4ee5\u7576\u4e3b\u6a5f\uff0c\u4e5f\u53ef\u4ee5\u7576\u8a2d\u5099\u7aef\u3002\u5982\u6b64\u4e00\u4f86\uff0c\u7576\u5169\u500bOTG\u88dd\u7f6e\u9047\u4e0a\u7684\u6642\u5019\uff0c\u5c31\u53ef\u4ee5\u7531\u5176\u4e2d\u4e00\u65b9\u7576\u4f5c\u4e3b\u6a5f\uff0c\u53e6\u4e00\u65b9 \u7576\u4f5c\u8a2d\u5099\u7aef\u3002\u5c31\u53ef\u4ee5\u5b8c\u5168\u7b26\u5408USB\u5c0d\u5169\u500b\u88dd\u7f6e\u76f8\u9023\u7684\u9700\u6c42\u4e86\u3002<\/p><\/div>\n

OTG\u7684\u88dd\u7f6e\u9084\u5fc5\u9808\u5177\u5099\u4ee5\u4e0b\u7684\u7279\u6027\uff1a<\/strong><\/font><\/div>\n
1. \u6709\u9650\u7684\u4e3b\u6a5f\u529f\u80fd\u3002<\/p>\n

2. \u70ba\u8a2d\u5099\u7aef\u6642\u5fc5\u9808\u652f\u63f4\u5168\u901f\u50b3\u8f38\u3002<\/p>\n

3. \u70ba\u4e3b\u6a5f\u7aef\u6642\u8981\u652f\u63f4\u5168\u901f\u7684USB\u8a2d\u5099\uff0c\u4f46\u4e0d\u5f37\u652f\u63f4\u9ad8\u901f\u6216\u662f\u4f4e\u901f\u8a2d\u5099\u3002<\/p>\n

4. \u7576OTG\u88dd\u7f6e\u6210\u70ba\u4e3b\u6a5f\u7aef\u6642\uff0c\u4e26\u6c92\u6709\u8fa6\u6cd5\u771f\u7684\u652f\u63f4\u6240\u6709\u7684USB\u88dd\u7f6e\uff0c\u56e0\u6b64\u5728\u9053\u7fa9\u4e0aOTG\u88dd\u7f6e\u5fc5\u9808\u5c07\u5176\u6240\u652f\u63f4\u7684\u8a2d\u5099\u6e05\u55ae\u5217\u51fa\uff0c\u4ee5\u5229\u6d88\u8cbb\u8005\u9078\u64c7\u53ef\u9023\u63a5\u7684\u8a2d\u5099\u3002<\/p>\n

5. \u5fc5\u9808\u544a\u77e5\u4f7f\u7528\u8005\u50b3\u8f38\u7684\u72c0\u614b\u3002<\/p>\n

6. \u81f3\u5c11\u80fd\u63d0\u4f9b8mA\u7684\u96fb\u6e90\u7d66\u8a2d\u5099\u7aef\u3002<\/p>\n

7. \u652f\u63f4SRP\uff08Session request protocol\uff09\uff1a
\u7576OTG\u88dd\u7f6e\u6210\u70ba\u4e3b\u6a5f\u7aef\u6642\uff0c\u53ef\u4ee5\u5c07Vbus\u7684\u96fb\u6e90\u5207\u65b7\uff0c\u4ee5\u7bc0\u7701\u96fb\u6e90\u3002SRP\u5247\u662f\u63d0\u4f9b\u4e00\u500b\u6a5f\u5236\u8b93\u8a2d\u5099\u7aef\u544a\u77e5\u4e3b\u6a5f\u7aef\u91cd\u65b0\u63d0\u4f9b\u96fb\u6e90\uff0c\u4e26\u4e14\u6062\u5fa9\u5728USB\u7dda\u8def\u4e0a\u7684\u76f8\u95dc\u6d3b\u52d5<\/p>\n

8. \u652f\u63f4HNP\uff08Host negotiation protocol\uff09\uff1a
\u7576\u5169\u500bOTG\u88dd\u7f6e\u76f8\u9023\u7d50\u6642\uff0c\u7531\u65bc\u5169\u500b\u88dd\u7f6e\u90fd\u6709\u7576\u4e3b\u6a5f\u7aef\u7684\u80fd\u529b\uff0c\u6240\u4ee5\u6703\u5148\u7531\u9023\u63a5\u5169\u500b\u88dd\u7f6e\u7684\u7e9c\u7dda\uff08Mini-A plug to Mini-B plug\uff09\u6c7a\u5b9a\u54ea\u4e00\u500b\u88dd\u7f6e\uff08\u9023\u63a5Mini-A plug\u7684\u88dd\u7f6e\uff09\u5728\u4e00\u958b\u59cb\u7684\u6642\u5019\u626e\u6f14\u4e3b\u6a5f\uff08A-device\uff09\u7684\u89d2\u8272\uff0c\u53e6\u4e00\u88dd\u7f6e\u5247\u662f\u626e\u6f14\u8a2d\u5099\u7aef\uff08B-device\uff09\u7684\u89d2\u8272\u3002\u7576\u5169\u500b\u88dd\u7f6e\u7d93\u7531\u7e9c\u7dda\u7d50\u5408\u5728\u4e00\u8d77 \u4e4b\u5f8c\uff0c\u82e5\u662f\u60f3\u8981\u4e92\u63db\u89d2\u8272\uff0c\u5247\u5fc5\u9808\u7d93\u7531HNP\u6240\u5b9a\u7fa9\u7684\u8a0a\u865f\u6e9d\u901a\u904e\u4e4b\u5f8c\uff0c\u624d\u53ef\u4ee5\u4e92\u63db\u89d2\u8272\u3002<\/p>\n

9. \u50c5\u80fd\u6709\u4e00\u500b\u4e14\u552f\u4e00\u7684\u4e00\u500bMini-AB\u63d2\u5ea7\u3002<\/p>\n

USB OTG\u63d0\u4f9b\u4e86\u4e00\u500b\u8b93\u5169\u500bUSB\u88dd\u7f6e\u9023\u7d50\u7684\u6a5f\u5236\uff0c\u539f\u672c\u8981\u7531\u96fb\u8166\u505a\u7684\u4e8b\u60c5\uff0c\u73fe\u5728\u90fd\u8981\u843d\u5728\u7576\u4e3b\u6a5f\u7aef\u7684OTG\u88dd\u7f6e\u8eab\u4e0a\u3002\u56e0\u6b64\uff0c\u70ba\u4e86\u8981\u5c0d\u61c9\u4e0d\u540c\u7684\u8a2d\u5099\uff0c\u5c31\u9700\u8981\u4e0d\u540c\u7684 \u9a45\u52d5\u7a0b\u5f0f\u3002\u539f\u672cUSB\u88dd\u7f6e\u7684\u88fd\u9020\u5546\u53ea\u8981\u719f\u6089\u81ea\u5df1\u7684\u7522\u54c1\u5c31\u53ef\u4ee5\u4e86\uff0c\u5728\u52a0\u5165OTG\u7684\u6982\u5ff5\u5f8c\uff0c\u5c31\u5fc5\u9808\u8981\u5c0d\u60f3\u8981\u9023\u7d50\u7684\u8a2d\u5099\u6709\u4e00\u5b9a\u7684\u4e86\u89e3\u3002\u5982\u6b64\u4fbf\u80fd\u5920\u4f7f\u7528\u76f8\u540c\u8cc7\u6599\u683c \u5f0f\uff0c\u76f8\u540c\u50b3\u8f38\u65b9\u5f0f\u4f86\u50b3\u8f38\u8cc7\u6599\u3002\u85c9\u7531\u9019\u4e9b\u4e0d\u540c\u88dd\u7f6e\u985e\u5225\u7684\u898f\u7bc4\uff0c\u5c31\u6709\u6a5f\u6703\u5927\u5927\u7c21\u5316\u5728OTG\u88dd\u7f6e\u4e0a\u5c0d\u9a45\u52d5\u7a0b\u5f0f\u7684\u9700\u6c42\u3002OTG\u88dd\u7f6e\u53ea\u8981\u80fd\u5920\u652f\u63f4\u67d0\u4e00\u500b\u985e\u5225\uff0c\u5c31\u53ef\u4ee5 \u652f\u63f4\u7b26\u5408\u8a72\u985e\u5225\u7684\u6240\u6709\u8a2d\u5099\u3002<\/strong><\/font><\/div>\n","protected":false},"excerpt":{"rendered":"

USB OTG\u6280\u8853\u7c21\u4ecb OTG\u662fOn The Go\u7684\u7e2e\u5beb\uff0c\u5728\u8d8a\u4f86\u8d8a\u591a\u7684USB\u88dd\u7f6e\u51fa\u73fe\u5f8c\uff0c\u6f38\u6f38\u6709\u90e8\u5206\u88dd\u7f6e\u60f3\u8981\u812b\u96e2 […]<\/p>\n","protected":false},"author":1,"featured_media":279,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[21],"class_list":["post-14","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-12","tag-21"],"_links":{"self":[{"href":"https:\/\/por.tw\/money\/wp-json\/wp\/v2\/posts\/14"}],"collection":[{"href":"https:\/\/por.tw\/money\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/por.tw\/money\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/por.tw\/money\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/por.tw\/money\/wp-json\/wp\/v2\/comments?post=14"}],"version-history":[{"count":0,"href":"https:\/\/por.tw\/money\/wp-json\/wp\/v2\/posts\/14\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/por.tw\/money\/wp-json\/wp\/v2\/media\/279"}],"wp:attachment":[{"href":"https:\/\/por.tw\/money\/wp-json\/wp\/v2\/media?parent=14"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/por.tw\/money\/wp-json\/wp\/v2\/categories?post=14"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/por.tw\/money\/wp-json\/wp\/v2\/tags?post=14"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}