{"id":7462,"date":"2023-09-11T02:16:17","date_gmt":"2023-09-11T02:16:17","guid":{"rendered":"https:\/\/www.besterpcba.com\/?p=7462"},"modified":"2023-09-11T02:16:18","modified_gmt":"2023-09-11T02:16:18","slug":"what-is-boundary-scan","status":"publish","type":"post","link":"https:\/\/www.besterpcba.com\/zh_hk\/%e4%bb%80%e4%b9%88%e6%98%af%e8%be%b9%e7%95%8c%e6%89%ab%e6%8f%8f\/","title":{"rendered":"\u4ec0\u4e48\u662f\u8fb9\u754c\u626b\u63cf"},"content":{"rendered":"<h2 class=\"wp-block-heading\" id=\"what-is-boundary-scan\">\u4ec0\u4e48\u662f\u8fb9\u754c\u626b\u63cf<\/h2>\n\n\n<p>\u8fb9\u754c\u626b\u63cf\uff0c\u53c8\u79f0 JTAG\uff08\u8054\u5408\u6d4b\u8bd5\u884c\u52a8\u7ec4\uff09\uff0c\u662f\u4e00\u79cd\u6d4b\u8bd5\u6280\u672f\uff0c\u5305\u62ec\u5c06\u79fb\u4f4d\u5bc4\u5b58\u5668\u9501\u5b58\u5355\u5143\uff08\u79f0\u4e3a\u8fb9\u754c\u626b\u63cf\u5355\u5143\uff09\u96c6\u6210\u5230\u517c\u5bb9\u8fb9\u754c\u626b\u63cf\u5668\u4ef6\u7684\u6bcf\u4e2a\u5916\u90e8\u8fde\u63a5\u4e2d\u3002\u8fd9\u4e9b\u5355\u5143\u5141\u8bb8\u5bf9 PCB \u4e0a\u7684\u96c6\u6210\u7535\u8def (IC) \u548c\u4e92\u8fde\u8fdb\u884c\u6d4b\u8bd5\u548c\u8c03\u8bd5\u3002<\/p>\n\n\n\n<p>\u8fb9\u754c\u626b\u63cf\u5355\u5143\u88ab\u6218\u7565\u6027\u5730\u653e\u7f6e\u5728\u96c6\u6210\u7535\u8def\u7684\u6bcf\u4e2a I\/O\uff08\u8f93\u5165\/\u8f93\u51fa\uff09\u5f15\u811a\u9644\u8fd1\uff0c\u5f62\u6210\u4e00\u4e2a\u79fb\u4f4d\u5bc4\u5b58\u5668\u94fe\uff0c\u5b9e\u73b0\u5668\u4ef6\u4e4b\u95f4\u7684\u6570\u636e\u4f20\u8f93\u3002\u5728\u6b63\u5e38\u5de5\u4f5c\u671f\u95f4\uff0c\u8fb9\u754c\u626b\u63cf\u5355\u5143\u662f\u4e0d\u53ef\u89c1\u7684\uff0c\u5bf9\u7535\u8def\u6ca1\u6709\u5f71\u54cd\u3002\u4f46\u662f\uff0c\u5f53\u5668\u4ef6\u8bbe\u7f6e\u4e3a\u6d4b\u8bd5\u6a21\u5f0f\u65f6\uff0c\u4e32\u884c\u6570\u636e\u6d41\uff08\u79f0\u4e3a\u6d4b\u8bd5\u5411\u91cf\uff09\u53ef\u4ee5\u901a\u8fc7\u79fb\u4f4d\u5bc4\u5b58\u5668\u94fe\u3002\u8fd9\u6837\u5c31\u53ef\u4ee5\u4ece\u96c6\u6210\u7535\u8def\u7ebf\u8def\u4e2d\u6355\u83b7\u6570\u636e\uff0c\u6216\u5c06\u6570\u636e\u5f3a\u5236\u8f93\u5165\u96c6\u6210\u7535\u8def\u7ebf\u8def\uff0c\u4ece\u800c\u4fc3\u8fdb\u5168\u9762\u6d4b\u8bd5\u548c\u5206\u6790\u3002<\/p>\n\n\n\n<p>\u4e3a\u4e86\u63a7\u5236\u8fb9\u754c\u626b\u63cf\u8bbe\u5907\uff0c\u4f7f\u7528\u4e86\u4e13\u7528\u7684\u6d4b\u8bd5\u8bbf\u95ee\u7aef\u53e3\uff08TAP\uff09\u548c TAP \u63a7\u5236\u5668\u3002TAP \u63a7\u5236\u5668\u662f\u4e00\u4e2a 16 \u72b6\u6001\u673a\uff0c\u7ba1\u7406\u7531\u8fb9\u754c\u626b\u63cf\u5355\u5143\u7ec4\u6210\u7684\u8fb9\u754c\u5bc4\u5b58\u5668\u3002TAP \u4fe1\u53f7\u5305\u62ec\u6d4b\u8bd5\u6570\u636e\u8f93\u5165 (TDI)\u3001\u6d4b\u8bd5\u6570\u636e\u8f93\u51fa (TDO)\u3001\u6d4b\u8bd5\u65f6\u949f (TCK)\u3001\u6d4b\u8bd5\u6a21\u5f0f\u9009\u62e9 (TMS) \u548c\u53ef\u9009\u7684\u6d4b\u8bd5\u590d\u4f4d (TRST)\uff0c\u7528\u4e8e\u63a7\u5236\u8fb9\u754c\u626b\u63cf\u5668\u4ef6\u548c\u6267\u884c\u5404\u79cd\u6d4b\u8bd5\u529f\u80fd\u3002<\/p>\n\n\n\n<p>IEEE 1149.1 \u6807\u51c6\u5b9a\u4e49\u4e86\u8fb9\u754c\u626b\u63cf\u6d4b\u8bd5\u7684\u67b6\u6784\u548c\u7a0b\u5e8f\u3002\u5b83\u89c4\u5b9a\u4e86\u4e09\u79cd\u5f3a\u5236\u6d4b\u8bd5\u529f\u80fd\uff1aEXTEST\u3001SAMPLE\/PRELOAD \u548c BYPASS\u3002\u6b64\u5916\uff0c\u8be5\u6807\u51c6\u8fd8\u63cf\u8ff0\u4e86 INTEST\u3001RUNBIST\u3001IDCODE\u3001CLAMP\u3001HIGHZ \u548c USERCODE \u7b49\u53ef\u9009\u6d4b\u8bd5\u529f\u80fd\u3002\u5236\u9020\u5546\u8fd8\u53ef\u4ee5\u5728 IEEE \u6807\u51c6\u7684\u6307\u5bfc\u4e0b\u7075\u6d3b\u6dfb\u52a0\u81ea\u5df1\u7684\u6d4b\u8bd5\u529f\u80fd\u3002<\/p>\n\n\n\n<p>\u8fb9\u754c\u626b\u63cf\u65e0\u9700\u7269\u7406\u6d4b\u8bd5\u63a2\u9488\u5373\u53ef\u6d4b\u8bd5\u548c\u8c03\u8bd5\u590d\u6742\u7684\u96c6\u6210\u7535\u8def\u548c\u4e92\u8fde\uff0c\u662f\u5370\u5237\u7535\u8def\u677f\u884c\u4e1a\u7684\u4e00\u9879\u91cd\u8981\u6280\u672f\u3002\u5b83\u63d0\u4f9b\u4e86\u4e00\u79cd\u5168\u9762\u7684\u6d4b\u8bd5\u89e3\u51b3\u65b9\u6848\uff0c\u7279\u522b\u662f\u5728\u7531\u4e8e\u9ad8\u5143\u4ef6\u5bc6\u5ea6\u3001\u8f83\u5c0f\u7684\u57fa\u5e95\u9762\u4ee5\u53ca BGA \u548c SMT \u7b49\u5148\u8fdb\u6280\u672f\u800c\u5bfc\u81f4\u5f15\u811a\u7684\u7269\u7406\u63a5\u89e6\u5177\u6709\u6311\u6218\u6027\u7684\u60c5\u51b5\u4e0b\u3002<\/p>\n\n\n\n<div class=\"wp-block-group glossary_faqs\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h2 class=\"wp-block-heading\" id=\"frequently-asked-questions\">\u5e38\u89c1\u95ee\u9898<\/h2>\n\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"what-is-the-difference-between-jtag-and-boundary-scan\">JTAG \u4e0e\u8fb9\u754c\u626b\u63cf\u6709\u4f55\u533a\u522b<\/h3><\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p>\u8fb9\u754c\u626b\u63cf\u662f\u4e00\u79cd\u6d4b\u8bd5\u6280\u672f\uff0c\u5305\u62ec\u5728\u4ece\u7845\u5230\u5916\u90e8\u5f15\u811a\u7684\u5f15\u7ebf\u4e2d\u6dfb\u52a0\u989d\u5916\u7684\u5355\u5143\u3002\u8fd9\u6837\u5c31\u53ef\u4ee5\u540c\u65f6\u9a8c\u8bc1\u82af\u7247\u548c\u7535\u8def\u677f\u7684\u529f\u80fd\u3002\u53e6\u4e00\u65b9\u9762\uff0cJTAG \u662f Joint Test Action Group\uff08\u8054\u5408\u6d4b\u8bd5\u884c\u52a8\u7ec4\uff09\u7684\u7f29\u5199\uff0c\u6307\u7684\u662f\u7528\u4e8e\u901a\u4fe1\u76ee\u7684\u7684\u63a5\u53e3\u6216\u6d4b\u8bd5\u8bbf\u95ee\u7aef\u53e3\u3002<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"what-is-the-purpose-of-the-boundary-scan-register\">\u8fb9\u754c\u626b\u63cf\u5bc4\u5b58\u5668\u7684\u7528\u9014\u662f\u4ec0\u4e48\uff1f<\/h3><\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p>\u8fb9\u754c\u626b\u63cf\u5bc4\u5b58\u5668\u7684\u4f5c\u7528\u662f\u6355\u6349\u8fb9\u754c\u626b\u63cf\u5355\u5143\u4e2d\u7684\u6570\u636e\uff0c\u8fd9\u6d89\u53ca\u5230\u5bf9\u8f93\u5165\u5f15\u811a\u7684\u76d1\u63a7\u3002\u8fd9\u4e9b\u6570\u636e\u53ef\u4ee5\u901a\u8fc7 TDO \u5f15\u811a\u4ece\u5668\u4ef6\u4e2d\u626b\u63cf\u51fa\u6765\u8fdb\u884c\u9a8c\u8bc1\uff0c\u4e5f\u53ef\u4ee5\u901a\u8fc7 TDI \u5f15\u811a\u626b\u63cf\u5230\u5668\u4ef6\u4e2d\u3002\u8fd9\u6837\uff0c\u6d4b\u8bd5\u4eea\u5c31\u80fd\u9a8c\u8bc1\u5668\u4ef6\u8f93\u51fa\u5f15\u811a\u4e0a\u7684\u6570\u636e\u3002<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"what-is-jtag-in-pcb\">\u4ec0\u4e48\u662f PCB \u4e2d\u7684 JTAG<\/h3><\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p>JTAG \u662f\u8054\u5408\u6d4b\u8bd5\u884c\u52a8\u7ec4\uff08Joint Test Action Group\uff09\u7684\u7f29\u5199\uff0c\u662f\u4e00\u79cd\u884c\u4e1a\u6807\u51c6\uff0c\u7528\u4e8e\u5728\u5370\u5237\u7535\u8def\u677f\u5236\u9020\u5b8c\u6210\u540e\u9a8c\u8bc1\u8bbe\u8ba1\u548c\u6d4b\u8bd5\u5370\u5237\u7535\u8def\u677f\u3002\u5b83\u662f\u7535\u5b50\u8bbe\u8ba1\u81ea\u52a8\u5316\uff08EDA\uff09\u4e2d\u8865\u5145\u6570\u5b57\u4eff\u771f\u548c\u5b9e\u65bd\u7247\u4e0a\u4eea\u5668\u6807\u51c6\u7684\u5de5\u5177\u3002<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"what-is-boundary-data\">\u4ec0\u4e48\u662f\u8fb9\u754c\u6570\u636e<\/h3><\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p>\u8fb9\u754c\u6570\u636e\u662f\u6307\u4f4d\u4e8e\u7ed9\u5b9a\u8303\u56f4\u5185\u6781\u7aef\u503c\u7684\u4e00\u7ec4\u6d4b\u8bd5\u6570\u636e\u503c\u3002\u8fd9\u4e9b\u503c\u4ee3\u8868\u9884\u671f\u7684\u4e0a\u9650\u548c\u4e0b\u9650\uff0c\u5e94\u4e88\u4ee5\u63a5\u53d7\u3002\u53cd\u4e4b\uff0c\u4efb\u4f55\u8d85\u51fa\u8fd9\u4e9b\u754c\u9650\u7684\u6570\u503c\uff0c\u65e0\u8bba\u662f\u5728\u754c\u9650\u4e4b\u524d\u8fd8\u662f\u4e4b\u540e\uff0c\u90fd\u5e94\u4e88\u4ee5\u5254\u9664\u3002<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"how-does-jtag-work\">JTAG \u5982\u4f55\u5de5\u4f5c<\/h3><\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p>JTAG\/ \u8fb9\u754c\u626b\u63cf\u6d4b\u8bd5\u67b6\u6784\u6700\u521d\u8bbe\u8ba1\u7528\u4e8e\u6d4b\u8bd5\u5370\u5237\u7535\u8def\u677f\uff08PCB\uff09\u4e0a\u96c6\u6210\u7535\u8def\uff08IC\uff09\u4e4b\u95f4\u7684\u8fde\u63a5\uff0c\u800c\u65e0\u9700\u7269\u7406\u6d4b\u8bd5\u63a2\u9488\u3002\u8fd9\u662f\u901a\u8fc7\u5c06\u4f7f\u7528\u591a\u8def\u590d\u7528\u5668\u548c\u9501\u5b58\u5668\u7535\u8def\u521b\u5efa\u7684\u8fb9\u754c\u626b\u63cf\u5355\u5143\u8fde\u63a5\u5230\u5668\u4ef6\u4e0a\u7684\u6bcf\u4e2a\u5f15\u811a\u6765\u5b9e\u73b0\u7684\u3002<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"what-is-the-benefit-of-jtag\">JTAG \u7684\u4f18\u52bf<\/h3><\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p>\u4f7f\u7528 JTAG \u63d0\u53d6\u56fa\u4ef6\u6709\u8bb8\u591a\u597d\u5904\u3002\u9996\u5148\uff0cJTAG \u662f\u4e00\u79cd\u666e\u904d\u8ba4\u53ef\u548c\u5e7f\u6cdb\u4f7f\u7528\u7684\u534f\u8bae\uff0c\u8fd9\u610f\u5473\u7740\u6709\u591a\u79cd\u5de5\u5177\u548c\u8d44\u6e90\u53ef\u4f9b\u4f7f\u7528\u3002\u5176\u6b21\uff0cJTAG \u53ef\u4ee5\u76f4\u63a5\u8bbf\u95ee\u8bbe\u5907\u7684\u5b58\u50a8\u5668\uff0c\u65e0\u9700\u4efb\u4f55\u8f6f\u4ef6\u6216\u56fa\u4ef6\u529f\u80fd\u3002<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"what-is-the-difference-between-jtag-and-iso\">JTAG \u548c ISO \u4e4b\u95f4\u6709\u4f55\u533a\u522b<\/h3><\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p>ISO \u7248\u672c\u4e0e RGH\/JTAG \u7248\u672c\u57fa\u672c\u76f8\u540c\uff0c\u4f46\u683c\u5f0f\u4e0d\u540c\u3002ISO \u6587\u4ef6\u5305\u542b\u6e38\u620f\u6587\u4ef6\uff0c\u800c RGH\/JTAG \u7248\u672c\u7684\u683c\u5f0f\u4e0d\u540c\u3002\u6628\u5929\uff0cNoobert \u6b63\u5728\u5c1d\u8bd5\u5c06\u6587\u4ef6\u538b\u7f29\u6210\u66f4\u5c0f\u7684\u683c\u5f0f\u3002<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"what-is-boundary-scan-architecture\">\u4ec0\u4e48\u662f\u8fb9\u754c\u626b\u63cf\u67b6\u6784<\/h3><\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p>\u8fb9\u754c\u626b\u63cf\u67b6\u6784\u662f\u4e00\u79cd\u6807\u51c6\u5316\u6d4b\u8bd5\u65b9\u6cd5\uff0c\u5b83\u5b9a\u4e49\u4e86\u89e3\u51b3\u5370\u5237\u7535\u8def\u677f\uff08PCB\uff09\u548c\u96c6\u6210\u7535\u8def\u7b49\u7ec4\u4ef6\u4e2d\u786c\u4ef6\u95ee\u9898\u7684\u6280\u672f\u548c\u7ed3\u6784\u3002\u8fd9\u79cd\u65b9\u6cd5\u7279\u522b\u9002\u7528\u4e8e\u6d4b\u8bd5\u590d\u6742\u548c\u5bc6\u96c6\u7684\u5370\u5237\u7535\u8def\u677f\uff0c\u56e0\u4e3a\u4f20\u7edf\u7684\u7535\u8def\u5185\u6d4b\u8bd5\u4eea\u5728\u8fd9\u4e9b\u60c5\u51b5\u4e0b\u53ef\u80fd\u4e0d\u90a3\u4e48\u6709\u6548\u3002<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"what-is-jtag-tap-controller\">\u4ec0\u4e48\u662f JTAG \u5206\u63a5\u63a7\u5236\u5668<\/h3><\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p>\u6839\u636e IEEE-1149.1 \u6807\u51c6\uff0cJTAG TAP \u63a7\u5236\u5668\u662f\u4e00\u4e2a\u7531\u6d4b\u8bd5\u65f6\u949f (TCK) \u548c\u6d4b\u8bd5\u6a21\u5f0f\u9009\u62e9 (TMS) \u4fe1\u53f7\u63a7\u5236\u7684 16 \u72b6\u6001\u6709\u9650\u72b6\u6001\u673a\u3002TAP \u63a7\u5236\u5668\u7684\u8f6c\u6362\u7531 TCK \u4e0a\u5347\u6cbf\u4e0a\u7684 TMS \u72b6\u6001\u51b3\u5b9a\u3002<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"what-protocol-does-jtag-use\">JTAG \u4f7f\u7528\u4ec0\u4e48\u534f\u8bae<\/h3><\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p>JTAG \u534f\u8bae\u53c8\u79f0 IEEE 1149.1\uff0c\u6700\u521d\u662f\u4e3a\u4e86\u7b80\u5316\u5236\u9020\u8fc7\u7a0b\u4e2d\u7684 PCB \u4e92\u8054\u6d4b\u8bd5\u800c\u5f00\u53d1\u7684\u3002<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"is-jtag-a-hardware-or-software\">JTAG \u662f\u786c\u4ef6\u8fd8\u662f\u8f6f\u4ef6<\/h3><\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p>JTAG \u662f\u4e00\u79cd\u786c\u4ef6\u63a5\u53e3\uff0c\u7531\u8054\u5408\u6d4b\u8bd5\u8bbf\u95ee\u5c0f\u7ec4\u4e8e 20 \u4e16\u7eaa 80 \u5e74\u4ee3\u521b\u5efa\uff0c\u76ee\u7684\u662f\u514b\u670d\u5728\u66f4\u590d\u6742\u3001\u66f4\u7d27\u51d1\u7684\u5370\u5237\u7535\u8def\u677f (PCB) \u4e0a\u6d4b\u8bd5\u4e92\u8fde\u7684\u6280\u672f\u56f0\u96be\u548c\u9650\u5236\u3002<\/p>\n<\/div><\/div>\n<\/div><\/div>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>\u4ec0\u4e48\u662f\u8fb9\u754c\u626b\u63cf<\/p>\n<p>\u908a\u754c\u6383\u63cf\uff0c\u4e5f\u7a31\u70ba JTAG\uff08\u806f\u5408\u6e2c\u8a66\u884c\u52d5\u7d44\uff09\uff0c\u662f\u4e00\u7a2e\u6e2c\u8a66\u6280\u8853\uff0c\u6d89\u53ca\u5c07\u79fb\u4f4d\u66ab\u5b58\u5668\u9396\u5b58\u55ae\u5143\uff08\u7a31\u70ba\u908a\u754c\u6383\u63cf\u55ae\u5143\uff09\u6574\u5408\u5230\u8207\u908a\u754c\u6383\u63cf\u76f8\u5bb9\u88dd\u7f6e\u7684\u6bcf\u500b\u5916\u90e8\u9023\u63a5\u4e2d\u3002<\/p>","protected":false},"author":1,"featured_media":4750,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"article_term":"","article_term_alternate":"","article_term_def":"","article_hook":"","auto_links":"","article_topic":"","article_fact_check":"","mt_social_share":"","mt_content_meta":"","mt_glossary_display":"","glossary_heading":"","glossary":"Boundary Scan","glossary_alter":"","glossary_def":"","article_task":"","footnotes":""},"categories":[15],"tags":[13,14],"class_list":["post-7462","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-glossary","tag-glossary","tag-ng"],"_links":{"self":[{"href":"https:\/\/www.besterpcba.com\/zh_hk\/wp-json\/wp\/v2\/posts\/7462","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.besterpcba.com\/zh_hk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.besterpcba.com\/zh_hk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.besterpcba.com\/zh_hk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.besterpcba.com\/zh_hk\/wp-json\/wp\/v2\/comments?post=7462"}],"version-history":[{"count":1,"href":"https:\/\/www.besterpcba.com\/zh_hk\/wp-json\/wp\/v2\/posts\/7462\/revisions"}],"predecessor-version":[{"id":8754,"href":"https:\/\/www.besterpcba.com\/zh_hk\/wp-json\/wp\/v2\/posts\/7462\/revisions\/8754"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.besterpcba.com\/zh_hk\/wp-json\/wp\/v2\/media\/4750"}],"wp:attachment":[{"href":"https:\/\/www.besterpcba.com\/zh_hk\/wp-json\/wp\/v2\/media?parent=7462"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.besterpcba.com\/zh_hk\/wp-json\/wp\/v2\/categories?post=7462"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.besterpcba.com\/zh_hk\/wp-json\/wp\/v2\/tags?post=7462"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}