{"id":174,"date":"2023-03-09T14:21:57","date_gmt":"2023-03-09T06:21:57","guid":{"rendered":"https:\/\/wp.ytdx.cc\/?p=174"},"modified":"2023-03-09T14:22:36","modified_gmt":"2023-03-09T06:22:36","slug":"petit-fat%e6%96%87%e4%bb%b6%e7%b3%bb%e7%bb%9f%e7%9b%b8%e5%85%b3%e5%a4%87%e5%bf%98","status":"publish","type":"post","link":"https:\/\/wp.ytdx.cc\/index.php\/2023\/03\/09\/petit-fat%e6%96%87%e4%bb%b6%e7%b3%bb%e7%bb%9f%e7%9b%b8%e5%85%b3%e5%a4%87%e5%bf%98\/","title":{"rendered":"Petit FAT\u6587\u4ef6\u7cfb\u7edf\u76f8\u5173\u5907\u5fd8"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><a href=\"https:\/\/www.cnblogs.com\/zlh840\/p\/3744955.html\">[\u7b14\u8bb0]SD\u5361\u76f8\u5173\u8d44\u6599<\/a><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;ESD\u9759\u7535\u653e\u7535\u6a21\u5757<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6211\u77e5\u9053\u7684flash\u5206\u4e3a\u4e24\u79cdNOR flash\u548cNAND flash\uff0cNOR falsh\u5bb9\u91cf\u4e00\u822c\u4e3a1~16M\u7528\u4e8e\u5355\u7247\u673a\u4ee3\u7801\u5b58\u50a8\uff0cNAND flash\u6700\u5c0f\u7684\u662f8M\u6700\u5927\u7684\u73b0\u5728\u542c\u8bf4\u670990G\u8fd8\u53ef\u80fd\u66f4\u5927\uff0c\u4e00\u822c\u7528\u5728\u5927\u5bb9\u91cf\u5b58\u50a8\u65b9\u9762\u3002<\/li>\n\n\n\n<li>VGA\u82af\u7247AD8367\u662fAD\u516c\u53f8\u63a8\u51fa\u7684<\/li>\n\n\n\n<li>\u9541\u5149(Micron)\u8eab\u4e3a\u4e16\u754c\u7b2c\u4e8c\u5927\u5185\u5b58\u9897\u7c92\u5236\u9020\u5546\uff0cOWD22-D9LCQ&nbsp; \u505aDDR3\u7528\u7684\u3002<\/li>\n\n\n\n<li>\u4e09\u661f\u7684FLASH\u82af\u7247NAND&nbsp;\u5bb9\u91cf\u7684K9F1G08U00\uff0c\u914d\u7f6eSTM32 ARM\u82af\u7247\u7528\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u6765\u6e90\uff1a<a href=\"http:\/\/blog.sina.com.cn\/s\/blog_4ada01d8010006h7.html\">http:\/\/blog.sina.com.cn\/s\/blog_4ada01d8010006h7.html<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6765\u6e90\uff1aDDR\u5185\u5b58\u6761\u6bd4\u8f83<a href=\"http:\/\/wenku.baidu.com\/link?url=WgIvJUndrCDTj9gvCHnFlJv2PtHEkefYFko8twldRiT7THj2e-t5pbCq8rZDwaWIWCwC50jYEiquIh2zGd00wcrnDOQ8QgeW6xCtM93U5Wu\">http:\/\/wenku.baidu.com\/link?url=WgIvJUndrCDTj9gvCHnFlJv2PtHEkefYFko8twldRiT7THj2e-t5pbCq8rZDwaWIWCwC50jYEiquIh2zGd00wcrnDOQ8QgeW6xCtM93U5Wu<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">bandwidth &#8211; \u786c\u4ef6\u5e26\u5bbd\uff0c\u5355\u4f4d\u4e3aHz\uff08\u8d6b\u5179\uff09\u3002\u5355\u4f4d\u65f6\u95f4\u4e2d\u7ebf\u8def\uff08\u4f20\u8f93\u7cfb\u7edf\uff09\u4e2d\u7535\u4fe1\u53f7\u7684\u6700\u5927\u632f\u8361\u9891\u7387\uff0c\u8d85\u8fc7\u6b64\u9891\u7387\u786c\u4ef6\u5c06\u65e0\u6cd5\u4fdd\u8bc1\u4fe1\u53f7\u4f20\u8f93\u7684\u6b63\u786e\u6027\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">data rate &#8211; \u6570\u636e\u4f20\u8f93\u7387\uff0c\u5355\u4f4d\u4e3abps\uff08bits per second\uff09\uff0c\u5355\u4f4d\u4f20\u8f93\u7684\u4e8c\u8fdb\u5236\u4f4d\u7684\u6570\u76ee\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">throughtput &#8211; \u541e\u5410\u91cf\uff0c\u5355\u4f4d\u4e3abps\uff08bits per second\uff09\uff0c\u6570\u636e\u901a\u8fc7\u7f51\u7edc\u7684\u4f20\u8f93\u901f\u7387\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;\u541e\u5410\u91cf\u662f\u901a\u8fc7\u9891\u7387\u548c\u5e26\u5bbd\u7b97\u51fa\u6765\u7684\uff0c\u5e26\u5bbd\u548c\u9891\u7387\u3002\u6bd4\u5982PCI\uff0cIDE\uff0cAGP\uff0cUSB\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u8ba1\u7b97\u516c\u5f0f\uff1a\u6570\u636e\u5e26\u5bbd\uff1d\u65f6\u949f\u9891\u7387\u00d7\u6570\u636e\u603b\u7ebf\u4f4d\u6570\/8\uff08\u5355\u4f4d\uff1abyte\/s\uff09<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u5185\u5b58\u5e26\u5bbd\u8ba1\u7b97\u516c\u5f0f\uff1a\u5e26\u5bbd=\u5185\u5b58\u6838\u5fc3\u9891\u7387\u00d7\u5185\u5b58\u603b\u7ebf\u4f4d\u6570\u00d7\u500d\u589e\u7cfb\u6570\u3002<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">DDR3\u9884\u8bfb\u53d6\u4f4d\u65708bit\u9700\u89814\u4e2a\u65f6\u949f\u5468\u671f\u5b8c\u6210\uff0c\u6240\u4ee5DDR3\u7684I\/O\u65f6\u949f\u9891\u7387\u662f\u5b58\u50a8\u5355\u5143\u6838\u5fc3\u9891\u7387\u76844\u500d\uff0c\u7531\u4e8e\u662f\u4e0a\u4e0b\u6cbf\u90fd\u5728\u4f20\u8f93\u6570\u636e\uff0c\u6240\u4ee5\u5b9e\u9645\u6709\u6548\u7684\u6570\u636e\u4f20\u8f93\u9891\u7387\u8fbe\u5230\u6838\u5fc3\u9891\u7387\u76848\u500d\u3002&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5185\u5b58\u6807\u51c6\u6838\u5fc3\u9891\u7387\uff0cI\/O&nbsp;\u9891\u7387\uff0c\u6709\u6548\u4f20\u8f93\u9891\u7387\uff0c\u5355\u901a\u9053\u5e26\u5bbd\uff0c\u53cc\u901a\u9053\u5e26\u5bbd\u3002\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u5185\u5b58\u6761\u6709\u4e09\u79cd\u4e0d\u540c\u7684\u9891\u7387\u6307\u6807\uff0c\u5b83\u4eec\u5206\u522b\u662f\u6838\u5fc3\u9891\u7387\u3001\u65f6\u949f\u9891\u7387\u548c\u6709\u6548\u6570\u636e\u4f20\u8f93\u9891\u7387\u3002\u6838\u5fc3\u9891\u7387\u5373\u4e3a\u5185\u5b58Cell\u9635\u5217(Memory Cell Array)\u7684\u5de5\u4f5c\u9891\u7387\uff0c\u5b83\u662f\u5185\u5b58\u7684\u771f\u5b9e\u8fd0\u884c\u9891\u7387\uff1b\u65f6\u949f\u9891\u7387\u5373I\/O Buffer\uff08\u8f93\u5165\/\u8f93\u51fa\u7f13\u5b58\uff09\u7684\u4f20\u8f93\u9891\u7387\uff08\u9884\u8bfb\u53d6\u4f4d\u65708\u4f4d\uff09\uff1b\u800c\u6709\u6548\u6570\u636e\u4f20\u8f93\u9891\u7387\u5219\u662f\u6307\u6570\u636e\u4f20\u9001\u7684\u9891\u7387\uff08\u65f6\u949f\u7684\u4e0a\u5347\u6cbf\u548c\u4e0b\u964d\u6cbf\u90fd\u91c7\u96c6\u6570\u636e\uff09\u3002Cell\u548cBank\u3002\u6570\u636e\u603b\u7ebf\u4f4d\u5bbd\u4e00\u76f4\u662f64bit\u3002<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>DDR3-800\u5185\u5b58\u6709\u6548\u6570\u636e\u4f20\u8f93\u9891\u7387\u4e3a800MHz\uff0c\u5176I\/O\u9891\u7387\u4e3a400MHz\uff0c\u6838\u5fc3\u9891\u7387\u53ea\u6709100MHz\u3002<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>DDR3-1600\u6709\u6548\u6570\u636e\u4f20\u8f93\u9891\u7387\u4e3a1600MHZ\uff0cI\/O\u65f6\u949f\u9891\u7387800MHZ\uff0c\u6838\u5fc3\u9891\u7387\u662f200MHZ\u3002<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">AGP\u603b\u7ebf\u5e26\u5bbd\uff1a<br>AGP1x\u603b\u7ebf\u5e26\u5bbd\uff1d66MHZ*32bit\/8=264MB\/s<br>AGP8x\u603b\u7ebf\u5e26\u5bbd\uff1d66MHZ*32bit\/8=2.1GB\/s<br>PCI\u603b\u7ebf\u5e26\u5bbd\uff1aPCI\u5e26\u5bbd=33MH*32bit\uff0f8=133MB\/S<br>32bit @ 33MHz \u6570\u636e\u541e\u5410\u91cf\u4e3a33MHZ*32bit\/8=132MB\/S<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">USB 3.0 \u6700\u5927\u4f20\u8f93\u901f\u73875Gbps, \u5411\u4e0b\u517c\u5bb9USB 1.0\/1.1\/2.0<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mbps\u548cMBps\u7684\u533a\u522b\uff1a\u6570\u636e\u5728\u4f20\u8f93\u8fc7\u7a0b\u4e2d\u662f\u4ee5\u4e8c\u8fdb\u5236\u4f4d\u7684\u5f62\u5f0f\uff0c\u7528bit\u6765\u8868\u793a\u3002\u5728\u8861\u91cf\u50a8\u5b58\u5bb9\u91cf\u65f6\uff0c\u7528byte\u6765\u8868\u793a\u3002<br>Mbps(Million bits per second) &#8211; \u6bcf\u79d2xx\u767e\u4e07\u4f4d<br>MBps(Million bytes per second) &#8211; \u6bcf\u79d2xx\u767e\u4e07\u5b57\u8282<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f4e\u901fUSB\u7684\u65f6\u949f\u9891\u7387\u662f1.5MHz<br>\u5168\u901fUSB\u7684\u65f6\u949f\u9891\u7387\u662f12MHz<br>\u9ad8\u901fUSB\u7684\u65f6\u949f\u9891\u7387\u662f480MHz<br>USB\u4f20\u8f93\u53c8\u5206\u56db\u79cd\uff1a\u63a7\u5236\u3001\u4e2d\u65ad\u3001\u6210\u7ec4\u548c\u540c\u6b65(Control,Interrupt,BulkandIsochronous)\u3002<br>\u4e0d\u540c\u7684\u4f20\u8f93\u901f\u5ea6\u4e0b\u4e0d\u540c\u7684\u4f20\u8f93\u65b9\u5f0f\u6709\u4e0d\u540c\u7684\u7406\u8bba\u4f20\u8f93\u901f\u5ea6\uff0c\u4e0d\u80fd\u7b3c\u7edf\u5730\u8bf4\u3002<br>\u4e0d\u7ba1\u54ea\u79cd\u4f20\u8f93\u901f\u5ea6\uff0c\u540c\u6b65\u4f20\u8f93\u7684\u7406\u8bba\u4f20\u8f93\u901f\u5ea6\u6700\u5feb\uff0c\u63a7\u5236\u4f20\u8f93\u7684\u7406\u8bba\u4f20\u8f93\u901f\u5ea6\u6700\u6162\u3002<br>USB\u7cfb\u7edf\u8981\u4fdd\u755910%\u7684\u5e26\u5bbd<br>usb1.1&nbsp; 12Mb\/s(12Mbps\/8=1.5MBps)\uff0c\u6781\u9650\u901f\u5ea6\u662f1MB\/s\uff0c\u63a5\u53e3\u6548\u7387\u4e3a1MB\/1.5MB*100%=66.7%<br>usb2.0&nbsp; 480Mb\/s(480Mbps\/8=60MBps)\uff0c\u6781\u9650\u901f\u5ea6\u7ea640MB\/s\uff0c\u63a5\u53e3\u6548\u7387\u4e3a40MB\/60MB*100%=66.7%<br>\u79fb\u52a8\u786c\u76d8USB2.0\u5199\u901f\u5ea6\u9700\u8981\u572820MB\/s\u5de6\u53f3~.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">PCI \u603b\u7ebf\u4f4d\u5bbd\u662f 32\u4f4d\uff0c\u603b\u7ebf\u9891\u7387 33 MHz\uff0c\u6bcf\u65f6\u949f\u4f20\u8f93 1 \u7ec4\u6570\u636e\uff0c\u5b83\u7684\u5e26\u5bbd\u4e3a 127.2 MB\/s\uff0c\u5373 1017.6 Mbps\u3002<br>\u25cfPCI 2.1 \u603b\u7ebf\u4f4d\u5bbd\u662f 64\u4f4d\uff0c\u603b\u7ebf\u9891\u7387 66 MHz\uff0c\u6bcf\u65f6\u949f\u4f20\u8f93 1 \u7ec4\u6570\u636e\uff0c\u5b83\u7684\u5e26\u5bbd\u4e3a 508.6 MB\/s\uff0c\u5373 4068.8 Mbps\u3002<br>\u25cfAGP \u603b\u7ebf\u4f4d\u5bbd\u662f 32\u4f4d\uff0c\u603b\u7ebf\u9891\u7387 66 MHz\uff0c\u6bcf\u65f6\u949f\u4f20\u8f93 1 \u7ec4\u6570\u636e\uff0c\u5b83\u7684\u5e26\u5bbd\u4e3a 254.3 MB\/s\uff0c\u5373 2034.4 Mbps\u3002<br>\u25cfAGP Pro \u603b\u7ebf\u4f4d\u5bbd\u662f 32\u4f4d\uff0c\u603b\u7ebf\u9891\u7387 66 MHz\uff0c\u6bcf\u65f6\u949f\u4f20\u8f93 1 \u7ec4\u6570\u636e\uff0c\u5b83\u7684\u5e26\u5bbd\u4e3a 254.3 MB\/s\uff0c\u5373 2034.4 Mbps\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">AGP Pro \u662f AGP \u7684\u6539\u8fdb\u578b\uff0c\u5b83\u4f7f\u5de5\u4f5c\u7ad9\u7ea7\u4e3b\u677f\u4e5f\u80fd\u5229\u7528 AGP \u7684\u52a0\u901f\u6027\u80fd\uff0c\u964d\u4f4e\u4e86 AGP \u6240\u9700\u7684\u7535\u538b\u4f9b\u5e94\uff0c\u5e76\u6ca1\u6709\u4ec0\u4e48\u592a\u5927\u7684\u6539\u53d8\u3002<br>\u25cfAGP 2X \u603b\u7ebf\u4f4d\u5bbd\u662f 32\u4f4d\uff0c\u603b\u7ebf\u9891\u7387 66 MHz\uff0c\u6bcf\u65f6\u949f\u4f20\u8f93 2 \u7ec4\u6570\u636e\uff0c\u5b83\u7684\u5e26\u5bbd\u4e3a 508.6 MB\/s\uff0c\u5373 4068.8 Mbps\u3002<br>\u25cfAGP 4X \u603b\u7ebf\u4f4d\u5bbd\u662f 32\u4f4d\uff0c\u603b\u7ebf\u9891\u7387 66 MHz\uff0c\u6bcf\u65f6\u949f\u4f20\u8f93 4 \u7ec4\u6570\u636e\uff0c\u5b83\u7684\u5e26\u5bbd\u4e3a 1017.3 MB\/s\uff0c\u5373 8138.4 Mbps\u3002<br>\u25cfAGP 8X \u603b\u7ebf\u4f4d\u5bbd\u662f 32\u4f4d\uff0c\u603b\u7ebf\u9891\u7387 66 MHz\uff0c\u6bcf\u65f6\u949f\u4f20\u8f93 8 \u7ec4\u6570\u636e\uff0c\u5b83\u7684\u5e26\u5bbd\u4e3a 2034.6 MB\/s\uff0c\u5373 16276.8 Mbps\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u56fe\u7247\u5b58\u50a8\u5728\u5e26\u6587\u4ef6\u7cfb\u7edf\u7684SD\u5361\u4e2d\u5982\u4f55\u89e3\u51faRGB\uff1a<a href=\"http:\/\/www.blogjava.net\/georgehill\/articles\/6549.html\">http:\/\/www.blogjava.net\/georgehill\/articles\/6549.html<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">BMP\u6587\u4ef6\u683c\u5f0f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Altera\u56fa\u5316\u5230Flash\u7684\u6587\u4ef6\u662fJIC\uff0c\u800cISE\u56fa\u5316\u5230Flash\u7684\u6587\u4ef6\u662fMCS<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6765\u6e90\uff1a<a href=\"http:\/\/wenku.baidu.com\/link?url=0Ju7D8JGRJpDBQN_z_FYAgx8aUq1HELen1GVJvzSL30iY2B5VmzQlDsrbOkI-FnbGw0-ZV6RjXhhZ2s5Mr2EKP2E1a_QSJ3EMcNuS1yG8KG\">http:\/\/wenku.baidu.com\/link?url=0Ju7D8JGRJpDBQN_z_FYAgx8aUq1HELen1GVJvzSL30iY2B5VmzQlDsrbOkI-FnbGw0-ZV6RjXhhZ2s5Mr2EKP2E1a_QSJ3EMcNuS1yG8KG<\/a>&nbsp;SPI\u6a21\u5f0f\u4e0b\uff0cSD\u5361\u5728\u65f6\u949f\u4e0a\u5347\u6cbf\u8bfb\u6570\u636e\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6765\u6e90\uff1a<a href=\"http:\/\/wenku.baidu.com\/view\/af0de2e74afe04a1b071de49.html?re=view\">http:\/\/wenku.baidu.com\/view\/af0de2e74afe04a1b071de49.html?re=view<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">STM32\u5b66\u4e60\u7b14\u8bb0\u4e4bSD\u5361V2.0\u534f\u8bae\u521d\u59cb\u5316\uff0c\u89e3\u91ca\u5f97\u5f88\u5177\u4f53<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"http:\/\/blog.sina.com.cn\/s\/blog_4f09c0b50101636h.html\">http:\/\/blog.sina.com.cn\/s\/blog_4f09c0b50101636h.html<\/a>&nbsp;\u6bcf\u4e2a\u547d\u4ee4\u7684\u4f4d\u4ecb\u7ecd\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6765\u6e90\uff1a<a href=\"http:\/\/wenku.baidu.com\/link?url=w7enVFMgall62cMzaxEyPGq10gwdyZkE_UBZHyUim4kp_U5I97FhUSHob-bHHqqh44-0kHP3hf7W94S5ZyXnmQIQJfSSC0h6UgiSmNL7w7\">http:\/\/wenku.baidu.com\/link?url=w7enVFMgall62cMzaxEyPGq10gwdyZkE_UBZHyUim4kp_U5I97FhUSHob-bHHqqh44-0kHP3hf7W94S5ZyXnmQIQJfSSC0h6UgiSmNL7w7<\/a>_<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">v2.0\u7248SD\u5361\u534f\u8bae\u4e2d\u547d\u4ee4CMD8\u7684\u4f7f\u7528\u8be6\u89e3<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">SDHC\u662f\u201cHigh Capacity SD Memory Card\u201d\u7684\u7f29\u5199\uff0c\u5373\u201c\u9ad8\u5bb9\u91cfSD\u5b58\u50a8\u5361\u201d\uff0c\u8fd9\u91cc\u7684HC\u6307\u7684\u662fHigh Capacity\uff0c\u9ad8\u5bb9\u91cf\u30022006\u5e745\u6708\uff0cSD\u534f\u4f1a\u53d1\u5e03\u4e86\u6700\u65b0\u7248\u7684SD 2.0\u7684\u7cfb\u7edf\u89c4\u8303\uff0c\u5728\u5176\u4e2d\u89c4\u5b9aSDHC\u662f\u7b26\u5408\u65b0\u7684\u89c4\u8303\uff0c\u4e14\u5bb9\u91cf\u5927\u4e8e2GB\u5c0f\u4e8e\u7b49\u4e8e32GB\u7684SD\u5361\u3002\u53e6\u5916SDHC\u81f3\u5c11\u8981\u7b26\u5408Class 2\u7684\u901f\u5ea6\u7b49\u7ea7\uff0c\u5e76\u4e14\u5728\u5361\u7247\u4e0a\u5fc5\u987b\u6709SDHC\u6807\u5fd7\u548c\u901f\u5ea6\u7b49\u7ea7\u6807\u5fd7\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">SD\u5361\u6700\u5927\u652f\u63012GB\u5bb9\u91cf\uff0cSDHC \u6700\u5927\u652f\u630132GB\u5bb9\u91cf\uff0cSDXC \u6700\u5927\u652f\u63012TB(2048GB)\u5bb9\u91cf<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6765\u6e90\uff1a<a href=\"http:\/\/bbs.ednchina.com\/BLOG_ARTICLE_269804.HTM\">http:\/\/bbs.ednchina.com\/BLOG_ARTICLE_269804.HTM<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;\u5728\u5355\u7247\u673a\u8bfb\u5199SD\u5361\u540e\uff0c\u5982\u679c\u9700\u8981\u67e5\u770b\u8bfb\u5199\u7684\u6548\u679c\uff0c\u53ef\u4ee5\u5229\u7528winhex\u8f6f\u4ef6\u5728\u8ba1\u7b97\u673a\u7aef\u76f4\u63a5\u89c2\u5bdf\u5230SD\u5361\u4e2d\u7684\u6570\u636e\u5185\u5bb9\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \u4eca\u5929\u7528PIC\u5355\u7247\u673a\u5c06SD\u5361\u7684\u7b2c\u4e00\u4e2a\u6247\u533a\u6570\u636e\u8bfb\u53d6\u51fa\u6765\u540e\uff0c\u901a\u8fc7\u4e32\u53e3\u53d1\u9001\u5230PC\u4e0a\u89c2\u5bdf\uff0c\u53d1\u73b0\u8bfb\u53d6\u7684\u6570\u636e\u4e0e\u5728PC\u4e0a\u7528winhex\u8f6f\u4ef6\u67e5\u770b\u7684\u7b2c\u4e00\u4e2a\u6247\u533a\u7684\u6570\u636e\u4e0d\u4e00\u81f4\uff0c\u8001\u662f\u4ee5\u4e3a\u5355\u7247\u673a\u7aef\u5f97\u8bfb\u53d6\u7a0b\u5e8f\u6709\u95ee\u9898\uff0c\u4fee\u6539\u4e86\u5f88\u591a\u6b21\u4e5f\u6ca1\u6709\u6548\u679c\uff0c\u540e\u4e0a\u7f51\u53d1\u73b0winhex\u8f6f\u4ef6\u5728\u6253\u5f00\u78c1\u76d8\u7684\u5bf9\u8bdd\u6846\u65f6\uff0c\u6709\u4e24\u79cd\u6253\u5f00\u65b9\u5f0f\uff0c\u4e00\u79cd\u662f\u903b\u8f91\u9a71\u52a8\u5668\uff0c\u53e6\u4e00\u79cd\u662f\u7269\u7406\u9a71\u52a8\u5668\uff0c\u5982\u679c\u5e0c\u671b\u770b\u5230\u4e0e\u5355\u7247\u673a\u8bfb\u53d6\u6247\u533a\u4e00\u81f4\u7684\u6570\u636e\uff0c\u9700\u4ee5\u7269\u7406\u9a71\u52a8\u5668\u65b9\u5f0f\u6253\u5f00SD\u5361\uff0c\u6b64\u65f6\u770b\u5230\u7684\u7b2c\u4e00\u6247\u533a\u5c31\u4e0e\u5355\u7247\u673a\u6240\u9009\u62e9\u7684\u6247\u533a\u4e00\u81f4\u4e86\uff0c\u53ef\u4ee5\u5f88\u76f4\u89c2\u7684\u770b\u5230SD\u5361\u4e2d\u7684\u5bf9\u5e94\u6570\u636e\u4e86\uff0c\u4e0d\u8fc7\u8981\u6ce8\u610f\uff0c\u524d\u9762\u7684\u6247\u533a\u6700\u597d\u4e0d\u8981\u968f\u4fbf\u901a\u8fc7\u5355\u7247\u673a\u5199\u5165\u6570\u636e\uff0c\u9632\u6b62\u7834\u574f\u4e86SD\u5361\u4e0a\u7684\u6587\u4ef6\u7cfb\u7edf\uff0c\u5bfc\u81f4\u65e0\u6cd5\u518d\u6b21\u5728PC\u673a\u4e0a\u6253\u5f00SD\u5361\u4e86\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6765\u6e90\uff1a<a href=\"http:\/\/wenku.baidu.com\/link?url=oC1-1QghHU5_tfoBdnprae3_PFlfbz-ceJ5jGXoOh_irHmwg_0mEYkj37JFePpoHsLcWFrOvrPrdEYjaP3IDDPjPyMOiMgAX9rfNRK4qujW\">http:\/\/wenku.baidu.com\/link?url=oC1-1QghHU5_tfoBdnprae3_PFlfbz-ceJ5jGXoOh_irHmwg_0mEYkj37JFePpoHsLcWFrOvrPrdEYjaP3IDDPjPyMOiMgAX9rfNRK4qujW<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">SD\u5361\u547d\u4ee4\u89e3\u8bfb\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6765\u6e90\uff1a<a href=\"http:\/\/dontium.blog.163.com\/blog\/static\/342952722009419114113217\/\">http:\/\/dontium.blog.163.com\/blog\/static\/342952722009419114113217\/<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">sd\u5361\u5206\u4e3ammc\u5361\uff0csd v1.0,sd v2.0\u4e09\u4e2a\u7248\u672c<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">cmd0\u662f{0x40,0x00,0x00,0x00,0x00,0x95}&nbsp; &#8211;0x01<br>cmd1\u662f{0x41,0x00,0x00,0x00,0x00,0xff}&nbsp;&nbsp;&nbsp; &#8211;0x01<br>cmd24\u662f{0x58,0x00,0x00,0x00,0x00,0xff}&nbsp;&nbsp;&#8211;0x01<br>cmd16\u662f{0x51,0x00,0x00,0x00,0x00,0xff}&nbsp;&nbsp;&nbsp;&#8211;0x01<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">cmd17\u662f{0x51,0x00,0x00,0x00,0x00,0xff}&nbsp; &#8211;0x01<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">cmd8\u662f{0x48,0x00,0x00,0x01,0xaa,0x87}&nbsp;&nbsp; &#8211;0x01<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">cmd55\u662f{0x77,0x00,0x00,0x00,0x00,0xff}&nbsp;&nbsp; &#8211;0x01<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">acmd41\u662f{0x69,0x40,0x00,0x00,0x00,0xff}&nbsp; &#8211;0x00<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u662fsd v1.0\u7248\u672c\uff0c\u76f4\u63a5\u53d1CMD55+ACMD41<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u662fsd v2.0\u7248\u672c\uff0c\u5148\u53d1cmd8\u518d\u53d1CMD55+ACMD41<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1 . \u547d\u4ee4\u53d8\u91cf<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5927\u5bb9\u91cfSD\u5361\uff0c\u5b58\u50a8\u5668\u8bbf\u95ee\u547d\u4ee4\u768432\u4f4d\u53d8\u91cf\u662f\u5bf9\u5757\u5bfb\u5740\u7684\u5b58\u50a8\u5668\u8bbf\u95ee\uff08\u662f\u51b3\u5b9a\u5757\u7684\u5757\u53d8\u91cf\uff09\u3002\u5757\u7684\u56fa\u5b9a\u5927\u5c0f\u4e3a512\u5b57\u8282\u3002\u800c\u6807\u51c6\u5bb9\u91cf\u7684SD\u5361\uff0c32\u4f4d\u53d8\u91cf\u662f\u5bf9\u5b57\u8282\u5bfb\u5740\uff0c\u5757\u957f\u5ea6\u7531CMD16\u547d\u4ee4\u51b3\u5b9a\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">5\u3001\u8bfb\u5199\u8d85\u65f6\u68c0\u67e5<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8bfb\uff1a\u5bf9\u6807\u51c6\u5bb9\u91cf\u7684SD\u5361\uff0c\u8bfb\u8d85\u65f6\u7684\u65f6\u95f4\u8bbe\u5b9a\u4e3a\u5927\u4e8e\u5178\u578b\u8bfb\u51fa\u65f6\u95f4\u7684100\u500d\uff0c\u6216\u8005\u8bbe\u7f6e\u4e3a100mS\u3002\u5361\u53c2\u6570\u7684\u8bfb\u65f6\u95f4\u4e3a\uff1aCSD\u4e2d\u7684TAACT NSAC\u53c2\u6570\u7684\u4e24\u500d\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5199\uff1a\u5bf9\u6807\u51c6\u5bb9\u91cf\u7684SD\u5361\uff0c\u5199\u8d85\u65f6\u7684\u65f6\u95f4\u8bbe\u5b9a\u4e3a\u5927\u4e8e\u5178\u578b\u7f16\u7a0b\u65f6\u95f4\u7684100\u500d\uff0c\u6216\u8005\u8bbe\u7f6e\u4e3a250mS\u3002\u5361\u53c2\u6570\u7684\u5199\u65f6\u95f4\u4e3a\uff1aCSD\u4e2d\u7684R2W_FACTOR<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5bf9\u4e8e\u5927\u5bb9\u91cf\u5361\uff0cCSD\u4e2d\u7684\u53c2\u6570\u4e3a\u56e0\u5b9a\u503c\uff0c\u56e0\u6b64\u6700\u597d\u4f7f\u7528&gt;100mS\u4f5c\u4e3a\u8bfb\u8d85\u65f6\uff0c&gt;250mS\u4f5c\u4e3a\u5199\u8d85\u65f6\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e94\u3001\u5173\u4e8e\u547d\u4ee4\u7d22\u5f15<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u201c\u547d\u4ee4\u7d22\u5f15\u201d\u5728SD\u534f\u8bae\u4e2d\u5e76\u6ca1\u6709\u660e\u786e\u6307\u51fa\uff0c\u4f46\u7efc\u5408\u53c2\u8003\u4e09\u661f\u7a0b\u5e8f\u53ca\u7f51\u4e0a\u6587\u7ae0\uff0c\u8ba4\u4e3a\u8fd9\u79cd\u8bf4\u6cd5\u662f\u6b63\u786e\u7684\uff1a\u201c\u547d\u4ee4\u7d22\u5f15\u201d\u4e2d\u7684\u6570\u5b57\u5c31\u662f\u5176\u201c\u7d22\u5f15\u503c\u201d\u3002\u5bf9\u4e8eACMD\u7c7b\u7684\u547d\u4ee4\uff0c\u53ef\u4ee5\u770b\u4f5c\u4e3a\u201c\u590d\u5408\u547d\u4ee4\u201d\uff0c\u5373\u5728\u6267\u884c\u65f6\uff0c\u524d\u9762\u5148\u6267\u884cCMD55\uff0c\u7136\u540e\u518d\u6267\u884c\u201c\u53bb\u6389ACMDn\u524d\u7684\u2018A\u2019\u7684\u547d\u4ee4\u201d<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6765\u6e90\uff1a<a href=\"http:\/\/www.doc88.com\/p-348627971214.html\">http:\/\/www.doc88.com\/p-348627971214.html<\/a>&nbsp; \u5355\u7247\u673a\u7528SPI\u6a21\u5f0f\u63a7\u5236SD\u5361\u8bfb\u5199<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">4G\u4ee5\u4e0a\u7684SD\u4e0d\u80fd\u7528SPI\u6a21\u5f0f\u5417\uff1f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5bb9\u91cf\u4e0eSPI\u603b\u7ebf\u65e0\u5173\uff0c2G\u662f\u4e2a\u5206\u6c34\u5cad\uff0c2G\u4ee5\u4e0a\u662fSD2.0\u534f\u8bae\uff0c\u4e0e2G\u4ee5\u4e0b\u7684\u5361\u9a71\u52a8\u4e0d\u517c\u5bb9\u3002\u5f88\u591a\u8001\u8bbe\u5907\uff08\u4ffa\u5bb6\u7684\u4f73\u80fdA530\u76f8\u673a\u5c31\u662f\u4e00\u4f8b\uff09\u7528\u4e0d\u4e862G\u4ee5\u4e0a\u7684\u5361\uff0c\u4e5f\u5c31\u662f\u8fd9\u4e2a\u539f\u56e0\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">#define ACMD41&nbsp;&nbsp;41&nbsp; &nbsp;&nbsp; &nbsp;\/\/\u547d\u4ee441\uff0c\u5e94\u8fd4\u56de0x00<br>#define CMD55&nbsp; &nbsp;55&nbsp; &nbsp;&nbsp; &nbsp;\/\/\u547d\u4ee455\uff0c\u5e94\u8fd4\u56de0x01<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u770b\u4e862.0\u7684\u534f\u8bae,\u5728\u7f51\u4e0a\u67e5\u4e86sdhc\u7684\u521d\u59cb\u5316\u65b9\u6cd5,\u5230\u76ee\u524d\u5df2\u7ecf\u628acsd\u8bfb\u51fa\u6765\u4e86,\u4e0b\u4e00\u6b65\u8be5\u5f04\u8bfb\u5199\u4e86\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">SD\u53612G\u53ca\u4ee5\u4e0b\u662f\u6309\u5b57\u8282\u5bfb\u5740\u7684\uff0c\u66f4\u5927\u7684\u662fSD2.0\u534f\u8bae\uff0c\u4f46\u8fd8\u8981\u8bfb\u53d6OCR\u6570\u636e\uff0c\u5224\u65ad\u662fSD2.0\u8fd8\u662fSD2.0HC\u5361\uff0c\u53ea\u6709SD2.0HC\u5361\u624d\u662f\u6309\u6247\u533a\u5bfb\u5740\u7684\uff0c\u6240\u4ee5\u5361\u7684\u521d\u59cb\u5316\u65f6\u5148\u8981\u8bfb\u53d6\u5361\u7684\u7c7b\u578b\uff0c\u8fd9\u70b9\u8981\u7279\u522b\u6ce8\u610f\u3002\u8fd9\u4e2a\u597d\u50cfSD2.0\u5361\u4e5f\u662f\u6309\u6247\u533a\u5bfb\u5740\u7684\u5427\uff1fSD1.X\u624d\u662f\u5b57\u8282\u5bfb\u5740\u5427\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">SD\u5361\u7b80\u4ecb\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">SD\u5361\u7684\u6280\u672f\u89c4\u8303\u7ecf\u8fc7\u51e0\u6b21\u5347\u7ea7\uff0c\u4e0e\u6700\u521d\u7248\u672c\u5df2\u6709\u5f88\u5927\u4e0d\u540c\uff0c\u672c\u6587\u57fa\u4e8eVer 3.01\u8ba8\u8bba<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ece\u5bb9\u91cf\u4e0a\u5206<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>&nbsp;\u5bb9\u91cf<\/td><td>\u547d\u540d&nbsp;<\/td><td>\u7b80\u79f0&nbsp;<\/td><\/tr><tr><td>&nbsp;0G&lt;\u5bb9\u91cf&lt;2G<\/td><td>Standard Capacity SD Memory Card&nbsp;<\/td><td>&nbsp;SDSC\u6216SD<\/td><\/tr><tr><td>&nbsp;2G&lt;\u5bb9\u91cf&lt;32G<\/td><td>High Capacity SD Memory Card<\/td><td>&nbsp;SDHC<\/td><\/tr><tr><td>&nbsp;32G&lt;\u5bb9\u91cf&lt;2T<\/td><td>Extended Capacity SD Memory Card<\/td><td>&nbsp;SDXC<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"http:\/\/blog.sina.com.cn\/s\/blog_4f09c0b50101636h.html\">http:\/\/blog.sina.com.cn\/s\/blog_4f09c0b50101636h.html<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6765\u6e90\uff1a<a href=\"http:\/\/servers.pconline.com.cn\/skills\/0712\/1193752.html\">http:\/\/servers.pconline.com.cn\/skills\/0712\/1193752.html<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">WinHex\u5de5\u5177\u5bf9FAT16\u78c1\u76d8\u8fdb\u884c\u5206\u6790\uff0c\u7c07\u3001\u6247\u533a\u3001\u5bb9\u91cf\u5173\u7cfb\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;4G \u53ca4G\u4ee5\u4e0asd\u5361\u4e0d\u80fd\u7528SPI\u8bfb\u5199\u5417\uff1f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6570\u636e\u5757\u957f\u5ea6515\u4e2a\u5b57\u8282\uff0c\u8d77\u59cb\u6807\u5fd7\u5b57\u8282\u4e3a0xFE\uff0c\u5b9e\u9645\u6570\u636e512\u5b57\u8282\uff0c2\u5b57\u8282CRC<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">CRC\u4f7f\u7528CRC-16\u7b97\u6cd5\uff0c\u4e0d\u8ba1\u7b97\u65f6\u53ef\u4ee5\u8bbe\u7f6e\u4e3a0xFF<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5199\u64cd\u4f5c\u4e4b\u540e\u8981\u7b49\u5f85\u975e\u5fd9\u4fe1\u53f7\uff0c\u5fd9\u4fe1\u53f7\u4f7fMISO\u4e3a\u4f4e\u7535\u4f4d\uff0c\u63a5\u6536\u6570\u636e\u4e00\u76f4\u4e3a0<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6765\u6e90\uff1a<a href=\"http:\/\/wenku.baidu.com\/view\/953298fcaef8941ea76e053c.html\">http:\/\/wenku.baidu.com\/view\/953298fcaef8941ea76e053c.html<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5355\u7247\u673a\u8bfb\u5199SD\u5361\u7684\u4ee3\u7801\u3002\u3002\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6765\u6e90\uff1a<a href=\"http:\/\/wenku.baidu.com\/link?url=8xXHUPr2ekFj6xzqfWI5Mu2q7iiszatEic-cikFaEOEnmd_8vg9oLtjhFk3qSCzDK2x-rTGjiFHc4QBeJ3RHIEg51nz4xBIVlN3rxpIR2E3\">http:\/\/wenku.baidu.com\/link?url=8xXHUPr2ekFj6xzqfWI5Mu2q7iiszatEic-cikFaEOEnmd_8vg9oLtjhFk3qSCzDK2x-rTGjiFHc4QBeJ3RHIEg51nz4xBIVlN3rxpIR2E3<\/a>&nbsp; \u5e26\u6587\u4ef6\u7cfb\u7edf\u7684\u4e13\u7528SD\u5361 \u7684\u8bfb\u5199\u64cd\u4f5c\u3002\u4e0d\u9700\u8981\u4e86\u89e3FAT\u7684\u590d\u6742\u7ed3\u6784\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u65e6\u6211\u4eec\u627e\u5230\u4e86\u6211\u4eec\u8981\u5199\u5165\u6587\u4ef6\u7684\u8d77\u59cb\u4f4d\u7f6e\uff08\u5b83\u4e00\u822c\u8868\u793a\u4e3a\u4e00\u4e2a\u6247\u533a\u53f7\uff09\uff0c\u90a3\u6211\u4eec\u5c31\u53ef\u4ee5\u5728\u8fd9\u4e2a\u8d77\u59cb\u6247\u533a\u7684\u4e0b\u4e00\u4e2a\u6247\u533a\u5199\u5165\u6570\u636e\u4e86\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">CMD17\u7684Address\u662f32\u4f4d\u7684,\u6700\u540e9\u4f4d\u662fBlock\u5730\u5740,\u524d\u9762\u7684\u662fSector\u5730\u5740.\u5982\u679cBlock=512&nbsp;Byte\u7684\u8bdd,Block\u7684\u503c\u53ea\u80fd\u662f0,Block!=0,Response\u4f1a\u62a5\u9519.sector\u662f\u7269\u7406\u5730\u5740.\u6b22\u8fce\u7838\u7816! \u632f\u5357\u7535\u5b50\uff0c\u90a3\u91cc\u6709SD\u7684\u83dc\u9e1f\u6559\u7a0b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6765\u6e90\uff1a<a href=\"http:\/\/blog.163.com\/zhaojun_xf\/blog\/static\/30050580201151410635516\/\">http:\/\/blog.163.com\/zhaojun_xf\/blog\/static\/30050580201151410635516\/<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">winhex\u8bfb\u53d6\u7684\u6570\u636e\u662f\u903b\u8f910\u6247\u533a\uff0c\u800cSD\u5361\u8bfb\u53d6\u7684\u6570\u636e\u662f\u7269\u74060\u6247\u533a\uff0c\u80af\u5b9a\u4e0d\u4e00\u6837\u3002\u56fe\u4e0a\u7684winhex\u8bfb\u53d6\u7684\u6570\u636e\u5e94\u8be5\u662fDBR\uff0cSD\u5361\u8bfb\u53d6\u7684\u6570\u636e\u662fMBR\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">SD\u5361\u5730\u5740\u7b2c\u4e00\u4e2a\u6570\u636e\u7269\u7406\u5730\u5740\u521d\u59cb\u503c \u7528winhex\u600e\u4e48\u67e5\uff1f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u9996\u5148\u70b9\u201c\u5de5\u5177\u201d\u70b9\u201c\u6253\u5f00\u78c1\u76d8\u201d\u9009\u62e9\u4f60\u8981\u770b\u7684\u78c1\u76d8\uff0cU\u76d8\u4e5f\u80fd\u770b\uff0c\u70b9\u201c\u4f4d\u7f6e\u201d\u70b9\u201c\u8f6c\u5230\u504f\u79fb\u201d\u7136\u540e\u518d\u8f93\u5165\u201c0\u201d\u70b9\u201cOK\u201d\u5c31\u53ef\u4ee5\u4e86<br>\u544a\u8bc9\u4f60\u5feb\u6377\u65b9\u5f0f\u5427 \u6253\u5f00\u8f6f\u4ef6\u540e\u6309F9\u9009\u62e9\u4f60\u8981\u770b\u7684\u78c1\u76d8\uff0c\u7136\u540ealt+g\u6216\u8005ctrl+g\u3002\u7136\u540e\u518d\u8f93\u5165\u201c0\u201d\u70b9\u201cOK\u201d\u5c31\u53ef\u4ee5\u4e86\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">offset=\u6247\u533a*512\uff0c\u6247\u533a\u662f512B\u3002WINHEX\u663e\u793a\u7684\u5c31\u662f\u5b9e\u9645\u7684\u8d77\u59cb\u5b57\u8282\u800c\u4e0d\u662f\u6247\u533a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728OpenCore\u4e0a\u4e0b\u8f7d\u7684SD SPI\u6a21\u5f0f\u4ee3\u7801\u662f\u6309\u7167\u4e0b\u9762\u7684\u6d41\u7a0b\u6765\u505a\u7684\uff0c\u53ef\u4ee5\u53c2\u8003\u4e0b\u54c8\u3002\u3002\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee3\u7801\u53c2\u8003C\u8bed\u8a00\uff1a\u6765\u6e90\uff1a<a href=\"http:\/\/wenku.baidu.com\/link?url=kn2cP2vSMRlFaO3fwOi-xN188IQe47s6TO37qcqTjndipGSFSQT4akXb0_v2ZjZ51BkA6Jd14BI2G8OFt_NAmNoAUy41cQsN50ENcfheuCm\">http:\/\/wenku.baidu.com\/link?url=kn2cP2vSMRlFaO3fwOi-xN188IQe47s6TO37qcqTjndipGSFSQT4akXb0_v2ZjZ51BkA6Jd14BI2G8OFt_NAmNoAUy41cQsN50ENcfheuCm<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6765\u6e90\uff1a<a href=\"http:\/\/www.cnblogs.com\/zyqgold\/archive\/2012\/01\/02\/2310340.html\">http:\/\/www.cnblogs.com\/zyqgold\/archive\/2012\/01\/02\/2310340.html<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5bf9SD\u5361\u7684\u63a7\u5236\u6d41\u7a0b<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1\u3001SD\u5361\u7684SPI\u5de5\u4f5c\u6a21\u5f0f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">SD \u5361\u5728\u4e0a\u7535\u521d\u671f\u81ea\u52a8\u8fdb\u5165SD \u603b\u7ebf\u6a21\u5f0f\uff0c\u5728\u6b64\u6a21\u5f0f\u4e0b\u5411 SD \u5361\u53d1\u9001\u590d\u4f4d\u547d\u4ee4<strong>CMD0 \u3002<\/strong>\u5982\u679cSD\u5361\u5728\u63a5\u6536\u590d\u4f4d\u547d\u4ee4\u8fc7\u7a0b\u4e2dCS\u4f4e\u7535\u5e73\u6709\u6548\uff0c\u5219\u8fdb\u5165SPI\u6a21\u5f0f\uff0c\u5426\u5219\u5de5\u4f5c\u5728SD \u603b\u7ebf\u6a21\u5f0f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0b\u8fb9\u662f\u63d2\u5165SD\u5361\uff0c\u5e76\u521d\u59cb\u5316\u4e3aSPI\u6a21\u5f0f\u7684\u6d41\u7a0b\u56fe\uff1a\uff08<strong>\u81f3\u4e8eCMD\u00d7\u00d7\u7a76\u7adf\u662f\u4ec0\u4e48\u6837\u7684\u547d\u4ee4\uff0c\u5982\u4e0b\u6240\u793a<\/strong>\uff09<\/p>\n\n\n\n<figure class=\"wp-block-image\"><a href=\"javascript:void(0);\"><img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/common.cnblogs.com\/images\/copycode.gif?w=640&#038;ssl=1\" alt=\"\u590d\u5236\u4ee3\u7801\"\/><\/a><\/figure>\n\n\n\n<pre class=\"wp-block-preformatted\">  1 \/* \u547d\u4ee4\u54cd\u5e94\u5b9a\u4e49 define command's response *\/\n  2 #define R1 1\n  3 #define R1B 2\n  4 #define R2 3\n  5 #define R3 4\n  6 \n  7 \/**********************************************\n  8 \n  9      SD\u5361SPI\u6a21\u5f0f\u4e0b\u547d\u4ee4\u96c6\n 10 \n 11 **********************************************\/\n 12 \n 13 \/******************************** \u57fa\u672c\u547d\u4ee4\u96c6 Basic command set **************************\/\n 14 \/* \u590d\u4f4dSD \u5361 Reset cards to idle state *\/\n 15 #define CMD0 0\n 16 #define CMD0_R R1\n 17 \n 18 \/* \u8bfbOCR\u5bc4\u5b58\u5668 Read the OCR (MMC mode, do not use for SD cards) *\/\n 19 #define CMD1 1\n 20 #define CMD1_R R1\n 21 \n 22 \/* \u8bfbCSD\u5bc4\u5b58\u5668 Card sends the CSD *\/\n 23 #define CMD9 9\n 24 #define CMD9_R R1\n 25 \n 26 \/* \u8bfbCID\u5bc4\u5b58\u5668 Card sends CID *\/\n 27 #define CMD10 10\n 28 #define CMD10_R R1\n 29 \n 30 \/* \u505c\u6b62\u8bfb\u591a\u5757\u65f6\u7684\u6570\u636e\u4f20\u8f93 Stop a multiple block (stream) read\/write operation *\/\n 31 #define CMD12 12\n 32 #define CMD12_R R1B\n 33 \n 34 \/* \u8bfb Card_Status \u5bc4\u5b58\u5668 Get the addressed card's status register *\/\n 35 #define CMD13 13\n 36 #define CMD13_R R2\n 37 \n 38 \/***************************** \u5757\u8bfb\u547d\u4ee4\u96c6 Block read commands **************************\/\n 39 \n 40 \/* \u8bbe\u7f6e\u5757\u7684\u957f\u5ea6 Set the block length *\/\n 41 #define CMD16 16\n 42 #define CMD16_R R1\n 43 \n 44 \/* \u8bfb\u5355\u5757 Read a single block *\/\n 45 #define CMD17 17\n 46 #define CMD17_R R1\n 47 \n 48 \/* \u8bfb\u591a\u5757,\u76f4\u81f3\u4e3b\u673a\u53d1\u9001CMD12\u4e3a\u6b62 Read multiple blocks until a CMD12 *\/\n 49 #define CMD18 18\n 50 #define CMD18_R R1\n 51 \n 52 \/***************************** \u5757\u5199\u547d\u4ee4\u96c6 Block write commands *************************\/\n 53 \/* \u5199\u5355\u5757 Write a block of the size selected with CMD16 *\/\n 54 #define CMD24 24\n 55 #define CMD24_R R1\n 56 \n 57 \/* \u5199\u591a\u5757 Multiple block write until a CMD12 *\/\n 58 #define CMD25 25\n 59 #define CMD25_R R1\n 60 \n 61 \/* \u5199CSD\u5bc4\u5b58\u5668 Program the programmable bits of the CSD *\/\n 62 #define CMD27 27\n 63 #define CMD27_R R1\n 64 \n 65 \/***************************** \u5199\u4fdd\u62a4 Write protection *****************************\/\n 66 \/* Set the write protection bit of the addressed group *\/\n 67 #define CMD28 28\n 68 #define CMD28_R R1B\n 69 \n 70 \/* Clear the write protection bit of the addressed group *\/\n 71 #define CMD29 29\n 72 #define CMD29_R R1B\n 73 \n 74 \/* Ask the card for the status of the write protection bits *\/\n 75 #define CMD30 30\n 76 #define CMD30_R R1\n 77 \n 78 \/***************************** \u64e6\u9664\u547d\u4ee4 Erase commands *******************************\/\n 79 \/* \u8bbe\u7f6e\u64e6\u9664\u5757\u7684\u8d77\u59cb\u5730\u5740(\u53ea\u7528\u4e8eSD\u5361) Set the address of the first write block to be erased(only for SD) *\/\n 80 #define CMD32 32\n 81 #define CMD32_R R1\n 82 \n 83 \/* \u8bbe\u7f6e\u64e6\u9664\u5757\u7684\u7ec8\u6b62\u5730\u5740(\u53ea\u7528\u4e8eSD\u5361) Set the address of the last write block to be erased(only for SD) *\/\n 84 #define CMD33 33\n 85 #define CMD33_R R1\n 86 \n 87 \/* \u8bbe\u7f6e\u64e6\u9664\u5757\u7684\u8d77\u59cb\u5730\u5740(\u53ea\u7528\u4e8eMMC\u5361) Set the address of the first write block to be erased(only for MMC) *\/\n 88 #define CMD35 35\n 89 #define CMD35_R R1\n 90 \n 91 \/* \u8bbe\u7f6e\u64e6\u9664\u5757\u7684\u7ec8\u6b62\u5730\u5740(\u53ea\u7528\u4e8eMMC\u5361) Set the address of the last write block to be erased(only for MMC) *\/\n 92 #define CMD36 36\n 93 #define CMD36_R R1\n 94 \n 95 \/* \u64e6\u9664\u6240\u9009\u62e9\u7684\u5757 Erase the selected write blocks *\/\n 96 #define CMD38 38\n 97 #define CMD38_R R1B\n 98 \n 99 \/***************************** \u9501\u5361\u547d\u4ee4 Lock Card commands ***************************\/\n100 \/* \u8bbe\u7f6e\/\u590d\u4f4d\u5bc6\u7801\u6216\u4e0a\u9501\/\u89e3\u9501\u5361 Set\/reset the password or lock\/unlock the card *\/\n101 #define CMD42 42\n102 #define CMD42_R    R1B\n103 \/* Commands from 42 to 54, not defined here *\/\n104 \n105 \/***************************** \u5e94\u7528\u547d\u4ee4 Application-specific commands ****************\/\n106 \/* \u7981\u6b62\u4e0b\u4e00\u4e2a\u547d\u4ee4\u4e3a\u5e94\u7528\u547d\u4ee4  Flag that the next command is application-specific *\/\n107 #define CMD55 55\n108 #define CMD55_R R1\n109 \n110 \/* \u5e94\u7528\u547d\u4ee4\u7684\u901a\u7528I\/O  General purpose I\/O for application-specific commands *\/\n111 #define CMD56 56\n112 #define CMD56_R R1\n113 \n114 \/* \u8bfbOCR\u5bc4\u5b58\u5668  Read the OCR (SPI mode only) *\/\n115 #define CMD58 58\n116 #define CMD58_R R3\n117 \n118 \/* \u4f7f\u80fd\u6216\u7981\u6b62 CRC Turn CRC on or off *\/\n119 #define CMD59 59\n120 #define CMD59_R R1\n121 \n122 \/***************************** \u5e94\u7528\u547d\u4ee4 Application-specific commands ***************\/\n123 \/* \u83b7\u53d6 SD Status\u5bc4\u5b58\u5668 Get the SD card's status *\/\n124 #define ACMD13 13\n125 #define ACMD13_R R2\n126 \n127 \/* \u5f97\u5230\u5df2\u5199\u5165\u5361\u4e2d\u7684\u5757\u7684\u4e2a\u6570 Get the number of written write blocks (Minus errors ) *\/\n128 #define ACMD22 22\n129 #define ACMD22_R R1\n130 \n131 \/* \u5728\u5199\u4e4b\u524d,\u8bbe\u7f6e\u9884\u5148\u64e6\u9664\u7684\u5757\u7684\u4e2a\u6570 Set the number of write blocks to be pre-erased before writing *\/\n132 #define ACMD23 23\n133 #define ACMD23_R R1\n134 \n135 \/* \u8bfb\u53d6OCR\u5bc4\u5b58\u5668 Get the card's OCR (SD mode) *\/\n136 #define ACMD41 41\n137 #define ACMD41_R R1\n138 \n139 \/* \u8fde\u63a5\/\u65ad\u5f00CD\/DATA[3]\u5f15\u811a\u4e0a\u7684\u4e0a\u62c9\u7535\u963b Connect or disconnect the 50kOhm internal pull-up on CD\/DAT[3] *\/\n140 #define ACMD42 42\n141 #define ACMD42_R R1\n142 \n143 \/* \u8bfb\u53d6SCR\u5bc4\u5b58\u5668 Get the SD configuration register *\/\n144 #define ACMD51 51\n145 #define ACMD51_R R1<\/pre>\n\n\n\n<figure class=\"wp-block-image\"><a href=\"javascript:void(0);\"><img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/common.cnblogs.com\/images\/copycode.gif?w=640&#038;ssl=1\" alt=\"\u590d\u5236\u4ee3\u7801\"\/><\/a><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f20\u4e9a\u5cf0 SD\u5361\u7684C\u8bed\u8a00\u5b9e\u73b0\uff1a<a href=\"http:\/\/www.cnblogs.com\/yuphone\/archive\/2011\/04\/19\/2021549.html\">http:\/\/www.cnblogs.com\/yuphone\/archive\/2011\/04\/19\/2021549.html<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u73b0\u5728\u6211\u6025\u9700\u5229\u7528SD\u5361\u4f5c\u4e3a\u4e00\u4e2a\u6570\u636e\u5b58\u50a8\u8bbe\u5907\uff0c \u4ec5\u7528\u4e8e \u6570\u636e\u5199\u5165\u548c\u8bfb\u53d6\u3002\u4f46\u662f\u5e76\u4e0d\u77e5\u9053SD\u5361\u7684\u6247\u533a\u5730\u5740\u7684\u8303\u56f4\u662f\u4ec0\u4e48\uff0c\u4e5f\u5c31\u662f\u8bf4\u6211\u60f3\u5229\u7528SD\u5361\u6307\u4ee4\u7684COM17\uff08(\u5355\u5757\u8bfb\u6307\u4ee4\uff09\u548cCOM24(\u591a\u5757\u8bfb\u6307\u4ee4)\u5bf9SD\u5361\u8fdb\u884c\u7eaf\u8bfb\u5199\uff0c\u56e0\u4e3a\u8981\u8bfb\u5199\u591a\u4e2a\u6247\u533a\uff0c\u800c\u6307\u4ee4\u540e\u9762\u52a0\u5730\u5740\u53c2\u6570\u7684\u53d6\u503c\u8303\u56f4\u548c\u683c\u5f0f\u6211\u5e76\u4e0d\u592a\u6e05\u695a\u3002\u5e0c\u671b\u5404\u4f4d\u9ad8\u624b\u5e2e\u6211\u89e3\u7b54\u8fd9\u4e2a\u95ee\u9898\u3002<br><br>\u53e6\u5916\uff0cSD\u5361\u53ea\u7528\u6765\u5b58\u53d6\u6570\u503c\u7684\u8bdd\uff0c\u6709\u5fc5\u8981\u4e0a\u7cfb\u7edf\u5417\uff1f\u6211\u7684\u60f3\u6cd5\u662f\u53ea\u8981\u77e5\u9053\u6247\u533a\u7684\u5730\u5740\uff0c\u9010\u4e2a\u8bfb\u5199\u5c31\u884c\u4e86\uff0c\u4e0d\u77e5\u9053\u8fd9\u4e2a\u60f3\u6cd5\u5bf9\u4e0d\u5bf9\u3002<br><br>\u5355\u7247\u673a\u578b\u53f7\uff1aAVR\u3000mega16\u3000\u5355\u7247\u673a<br>SD\u5361\u578b\u53f7\uff1a1G\u3000TF\u5361\uff08\u5df2\u5229\u7528\u5361\u5957\u8f6c\u4e3aSD\u5361\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;CMD17\u7684Address\u662f32\u4f4d\u7684,\u6700\u540e9\u4f4d\u662fBlock\u5730\u5740,\u524d\u9762\u7684\u662fSector\u5730\u5740.\u5982\u679cBlock=512&nbsp;Byte\u7684\u8bdd,Block\u7684\u503c\u53ea\u80fd\u662f0,Block!=0,Response\u4f1a\u62a5\u9519.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">MMC_write_Blocks:<br>1\uff0c\u521d\u59cb\u5316\uff0c\u8fdb\u5165SPI\u6a21\u5f0f\uff0c<br>2\uff0c\u53d1CMD25\u547d\u4ee4\uff0c<br>3\uff0c\u8fde\u8bfb2\u5b57\u8282\uff0c\u597d\u8c61\u8bfb1\u5b57\u8282\u4e5f\u53ef\u4ee5\uff0c<br>4\uff0c\u53d1start\uff08\u53d1\u4e00\u5b57\u82820xfc\u5230sd\u5361\uff09\uff0c<br>5\uff0c\u53d1\u4e00\u4e2a\u6570\u636e\u5757\u5230sd\u5361\uff0c<br>6\uff0c\u53d12\u5b57\u82820xff\u5230sd\u5361\uff0c\u5f53\u4f5cCRC16\uff0c<br>7\uff0c\u8bfb\u5fd9\u4fe1\u606f\uff0c\u76f4\u5230\u4e0d\u5fd9\uff0c<br>8\uff0c\u5982\u679c\u6240\u6709\u6570\u636e\u6ca1\u6709\u53d1\u5b8c\uff0c\u8df3\u52304\uff0c<br>9\uff0c\u7ed3\u675f\uff0c\u53d1end\uff08\u53d1\u4e00\u5b57\u82820xfb\u5230sd\u5361\uff09\uff0c<br>10\uff0c\u53d1CMD12\u547d\u4ee4\u3002<br><br>SMMC_read_Blocks:<br>1\uff0c\u521d\u59cb\u5316\uff0c\u8fdb\u5165SPI\u6a21\u5f0f\uff0c<br>2\uff0c\u53d1CMD18\u547d\u4ee4\uff0c<br>3\uff0c\u5faa\u73af\u8bfb\u52300xfe\u5b57\u8282\uff0c<br>4\uff0c\u8bfb1\u4e2a\u6570\u636e\u5757\u5230sd\u5361\uff0c<br>5\uff0c\u8bfb2\u5b57\u8282CRC16\uff0c<br>6\uff0c\u5982\u679c\u6240\u6709\u6570\u636e\u6ca1\u6709\u8bfb\u5b8c\uff0c\u8df3\u52303\uff0c<br>7\uff0c\u7ed3\u675f\uff0c\u53d1CMD12\u547d\u4ee4\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">SD\u767e\u79d1\u8d44\u6599\uff1a<a href=\"http:\/\/baike.baidu.com\/link?url=tz_JG2S6yNTDWR701WxF4sv7BPXEzy5RtwO-Z2Nc4mcC-OdEK8RV_l16DFY1EBFJ\">http:\/\/baike.baidu.com\/link?url=tz_JG2S6yNTDWR701WxF4sv7BPXEzy5RtwO-Z2Nc4mcC-OdEK8RV_l16DFY1EBFJ<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">MiniSD\u5361\u7684\u8bbe\u8ba1\u521d\u59cb\u662f\u4e3a\u9010\u6e10\u5f00\u59cb\u666e\u53ca\u7684\u62cd\u7167\u624b\u673a\u800c\u4f5c\uff0c\u901a\u8fc7\u9644\u8d60\u7684SD\u8f6c\u63a5\u5361\u8fd8\u53ef\u5f53\u505a\u4e00\u822cSD\u5361\u4f7f\u7528\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u652f\u6301\u4f20\u8f93\u6a21\u5f0f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">SD\u5361\u5171\u652f\u6301\u4e09\u79cd\u4f20\u8f93\u6a21\u5f0f\uff1aSPI\u6a21\u5f0f\uff08\u72ec\u7acb\u5e8f\u5217\u8f93\u5165\u548c\u5e8f\u5217\u8f93\u51fa\uff09\uff0c1\u4f4dSD\u6a21\u5f0f \uff08\u72ec\u7acb\u6307\u4ee4\u548c\u6570\u636e\u901a\u9053\uff0c\u72ec\u6709\u7684\u4f20\u8f93\u683c\u5f0f\uff09\uff0c 4\u4f4dSD\u6a21\u5f0f \uff08\u4f7f\u7528\u989d\u5916\u7684\u9488\u811a\u4ee5\u53ca\u67d0\u4e9b\u91cd\u65b0\u8bbe\u7f6e\u7684\u9488\u811a\u3002\u652f\u6301\u56db\u4f4d\u5bbd\u7684\u5e76\u884c\u4f20\u8f93\uff09\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f4e\u901f\u5361\u901a\u5e38\u652f\u6301 0~400 \u5343\u6bd4\u7279\/\u79d2 \u6570\u636e\u4f20\u8f93\u7387\uff0c\u91c7\u7528SPI \u548c1\u4f4dSD\u4f20\u8f93\u6a21\u5f0f\u3002 \u9ad8\u901f\u5361\u652f\u6301 0 ~ 100 \u5146\u6bd4\u7279\/\u79d2\u6570\u636e\u4f20\u8f93\u7387\uff0c\u91c7\u75284\u4f4dSD\u4f20\u8f93\u6a21\u5f0f\uff1b \u652f\u63010\u201325 \u5146\u6bd4\u7279\/\u79d2 \uff0c\u91c7\u7528SPI\u548c 1\u4f4dSD\u6a21\u5f0f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u56e0\u5e94SD\u5361\u7684\u6807\u51c6\u5bb9\u91cf\u4e0a\u9650\u53ea\u67094GB\uff0c\u4e0d\u8db3\u4ee5\u5e94\u4ed8\u65e5\u76ca\u4e0a\u5347\u7684\u5bb9\u91cf\u9700\u6c42\uff0c\u8054\u76df\u5236\u5b9a\u4e86\u65b0\u7684SDHC\u6807\u51c6\u3002SDHC\u5361\u7684\u5916\u578b\u8ddf\u666e\u901a\u7684SD\u5361\u5b8c\u5168\u76f8\u540c\uff0c\u800c\u5bb9\u91cf\u7684\u4e0b\u9650\u4e3a4GB\uff0c\u9884\u6599\u5e74\u5185\u53ef\u63a8\u51fa\u9ad8\u8fbe32GB\u7684SDHC\u5361\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6280\u672f\u8bba\u575b\uff1a<a href=\"http:\/\/www.amobbs.com\/forum-1029-1.html\">http:\/\/www.amobbs.com\/forum-1029-1.html<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u62dc\u6258\u4f60\u5199\u8fd9\u8ddf\u6ca1\u5199\u6ca1\u591a\u5927\u533a\u522b\uff0c\u641e\u786c\u4ef6\u7684\u8fd9\u4e9b\u4e0d\u7406\u89e3\u5c31\u4e0d\u53eb\u641e\u786c\u4ef6\u7684\u3002\u5173\u952e\u662f\u8fd9\u4e9b\u5668\u4ef6\u5982\u4f55\u64cd\u4f5c\uff0c\u5982\u4f55\u63a7\u5236\uff0c\u600e\u6837\u5199\u65f6\u5e8f\uff0c\u8fd9\u624d\u662f\u91cd\u70b9\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"http:\/\/www.amobbs.com\/thread-4676153-1-1.html\">http:\/\/www.amobbs.com\/thread-4676153-1-1.html<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;\u9996\u5148SD\u4e00\u822c\u6709\u4e24\u79cd\u63a5\u53e3\u534f\u8bae\uff0cSPI\u548cSDIO \u5982\u679c\u4f60\u5355\u7247\u673a\u6ca1\u6709SDIO\u90a3\u5c31\u7528SPI\u597d\u4e86\uff0cSPI\u7528\u786c\u4ef6\u7684\u6216\u8005\u8f6f\u4ef6\u6a21\u62df\u90fd\u53ef\u4ee5\uff0c\u7136\u540e\u8c03\u7528SPI\u53d1\u9001\u548c\u63a5\u6536\u51fd\u6570\u5199SD\u7684\u9a71\u52a8\uff0c\u5199\u5b8c\u4e4b\u540eSD\u5361\u5c31\u53ef\u4ee5\u7c7b\u4f3c\u4e8eEEPROM\u6765\u7528\u4e86\uff0c\u4f46\u662f\u6ce8\u610f\uff0c\u8fd9\u65f6\u5019\u7684SD\u5361\u662f\u6ca1\u6709\u201c\u6587\u4ef6\u201d\u8fd9\u4e2a\u6982\u5ff5\u7684\uff0cEEPROM\u4e5f\u6ca1\u6709\u561b\uff0c\u5982\u679c\u60f3\u8bfb\u53d6SD\u4e2d\u7684\u6587\u4ef6\u90a3\u8fd8\u9700\u8981\u79fb\u690d\u6587\u4ef6\u7cfb\u7edf,\u6bd4\u5982fatfs\uff0c\u79fb\u690d\u6210\u529f\u540e\u4f60\u5c31\u53ef\u4ee5\u7528\u7c7b\u4f3c\u4e8efopen\u4e4b\u7c7b\u7684\u51fd\u6570\u5566~\u9a71\u52a8\u65b9\u9762\u53ef\u4ee5\u53c2\u8003\u539f\u5b50\u54e5 \u300aSTM32\u4e0d\u5b8c\u5168\u300b\u624b\u518c\u7684SD\u5361\u64cd\u4f5c\u7684\u76f8\u5173\u5185\u5bb9\uff0c\u6587\u4ef6\u7cfb\u7edf\u79fb\u690d\u561b\uff0c\u5355\u7247\u673a\u5f3a\u4e00\u70b9\u63a8\u8350\u7528fatfs\uff0c\u5f31\u4e00\u70b9\u7684\u7528Petit FAT\uff0c\u66fe\u7ecf\u5728STC 1T\u768451\u5355\u7247\u673a\u4e0a\u4f7f\u7528Petit FAT\u6587\u4ef6\u7cfb\u7edf\u8bfb\u53d6bmp\u56fe\u50cf\u5e76\u5728\u5f69\u5c4f\u4e0a\u663e\u793a\uff0c\u4e00\u5206\u949f\u5237\u4e86\u4e00\u5e45\u56fe\uff0c\u7f6a\u5b7d\u554a\uff01\uff01\u5b9e\u5728\u65e0\u804a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6765\u6e90\uff1aSD\u5361\u7684SPI\u6a21\u5f0f\u7684\u521d\u59cb\u5316\u987a\u5e8f<a href=\"http:\/\/jinyong314.blog.163.com\/blog\/static\/301657422010530112349686\/\">http:\/\/jinyong314.blog.163.com\/blog\/static\/301657422010530112349686\/<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6765\u6e90\uff1a\u57fa\u4e8eFPGA\u7684SD\u5361\u786c\u4ef6\u63a7\u5236\u5668\u5f00\u53d1\uff08SPI\u6a21\u5f0f\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;<a href=\"http:\/\/zsl666.blog.163.com\/blog\/static\/17626761520114308512108\/\">http:\/\/zsl666.blog.163.com\/blog\/static\/17626761520114308512108\/<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6765\u6e90\uff1a<a href=\"http:\/\/forum.eepw.com.cn\/thread\/91070\/1\">http:\/\/forum.eepw.com.cn\/thread\/91070\/1<\/a>&nbsp;\u6211\u4e5f\u6709\u540c\u6837\u7684\u95ee\u9898\u3002\u3002\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"http:\/\/www.amobbs.com\/forum.php?mod=viewthread&amp;action=printable&amp;tid=4676153\">http:\/\/www.amobbs.com\/forum.php?mod=viewthread&amp;action=printable&amp;tid=4676153<\/a>&nbsp; \u7528FPGA\u76f4\u63a5\u8bfb\u53d6SD\u5361\u6247\u533a\u6570\u636e<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u80fd\u4e0d\u80fd\u628a<strong>SD<\/strong>\u5361\u4f5c\u4e3a\u4e00\u4e2a\u201c\u5927\u5bb9\u91cf\u7684\u53ef\u4ee5\u6309\u5b57\u8282\u8bfb\u5199\u7684\u6570\u636e\u5b58\u50a8\u5668\u201d\u3002\u5c31\u662f\u6ca1\u6709\u4efb\u4f55\u6587\u4ef6\u7cfb\u7edf\uff0c\u76f4\u63a5\u50cf<strong>eeprom<\/strong>\u90a3\u6837\uff0c\u6309\u5730\u5740\u8fdb\u884c\u8bfb\u5199\u6570\u636e\uff1f\u8c22\u8c22\uff01<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">SD\u5361\u89c4\u8303\u548cFAT\u6587\u4ef6\u683c\u5f0f\u89c4\u8303\u662f\u975e\u5e38\u590d\u6742\uff0c\u5982\u679c\u5728\u9879\u76ee\u4e2d\u8981\u5355\u72ec\u6765\u5199\u8fd9\u4e24\u4e2a\u89c4\u8303\u7684\u975e\u5e38\u8d39\u65f6\u548c\u8d39\u529b\uff0c\u800c\u5176\u975e\u5e38\u5360\u7528\u7cfb\u7edf\u8d44\u6e90\uff1b\u73b0\u5728\u7684\u4fbf\u643a\u4eea\u91c7\u96c6\u7684\u6570\u636e\u79cd\u7c7b\u8d8a\u6765\u8d8a\u591a\uff0c\u6570\u636e\u91cf\u8d8a\u6765\u8d8a\u5927\uff0c\u800c\u5176\u5927\u90e8\u5206\u8981\u6c42\u5728\u8ba1\u7b97\u673a\u4e0a\u5907\u4efd\u6570\u636e\u6216\u8005\u540e\u671f\u7528\u8ba1\u7b97\u673a\u5904\u7406\u6570\u636e\uff1b\u800cSD\u5361\u4ee5\u5176\u5bb9\u91cf\u5927\uff0c\u901f\u5ea6\u5feb\uff0c\u63a5\u53e3\u7b80\u5355\uff0c\u52a0\u4e4b\u914d\u5957\u7684\u8bfb\u5361\u5668\u4fbf\u5b9c\u800c\u53d1\u5c55\u8fc5\u901f\uff1b<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u9996\u5148SD\u4e00\u822c\u6709\u4e24\u79cd\u63a5\u53e3\u534f\u8bae\uff0cSPI\u548cSDIO \u5982\u679c\u4f60\u5355\u7247\u673a\u6ca1\u6709SDIO\u90a3\u5c31\u7528SPI\u597d\u4e86\uff0cSPI\u7528\u786c\u4ef6\u7684\u6216\u8005\u8f6f\u4ef6\u6a21\u62df\u90fd\u53ef\u4ee5\uff0c\u7136\u540e\u8c03\u7528SPI\u53d1\u9001\u548c\u63a5\u6536\u51fd\u6570\u5199SD\u7684\u9a71\u52a8\uff0c\u5199\u5b8c\u4e4b\u540eSD\u5361\u5c31\u53ef\u4ee5\u7c7b\u4f3c\u4e8eEEPROM\u6765\u7528\u4e86\uff0c\u4f46\u662f\u6ce8\u610f\uff0c\u8fd9\u65f6\u5019\u7684SD\u5361\u662f\u6ca1\u6709\u201c\u6587\u4ef6\u201d\u8fd9\u4e2a\u6982\u5ff5\u7684\uff0cEEPROM\u4e5f\u6ca1\u6709\u561b\uff0c\u5982\u679c\u60f3\u8bfb\u53d6SD\u4e2d\u7684\u6587\u4ef6\u90a3\u8fd8\u9700\u8981\u79fb\u690d\u6587\u4ef6\u7cfb\u7edf,\u6bd4\u5982fatfs\uff0c\u79fb\u690d\u6210\u529f\u540e\u4f60\u5c31\u53ef\u4ee5\u7528\u7c7b\u4f3c\u4e8efopen\u4e4b\u7c7b\u7684\u51fd\u6570\u5566~\u9a71\u52a8\u65b9\u9762\u53ef\u4ee5\u53c2\u8003\u539f\u5b50\u54e5 \u300aSTM32\u4e0d\u5b8c\u5168\u300b\u624b\u518c\u7684SD\u5361\u64cd\u4f5c\u7684\u76f8\u5173\u5185\u5bb9\uff0c\u6587\u4ef6\u7cfb\u7edf\u79fb\u690d\u561b\uff0c\u5355\u7247\u673a\u5f3a\u4e00\u70b9\u63a8\u8350\u7528fatfs\uff0c\u5f31\u4e00\u70b9\u7684\u7528Petit FAT\uff0c\u66fe\u7ecf\u5728STC 1T\u768451\u5355\u7247\u673a\u4e0a\u4f7f\u7528Petit FAT\u6587\u4ef6\u7cfb\u7edf\u8bfb\u53d6bmp\u56fe\u50cf\u5e76\u5728\u5f69\u5c4f\u4e0a\u663e\u793a\uff0c\u4e00\u5206\u949f\u5237\u4e86\u4e00\u5e45\u56fe\uff0c\u7f6a\u5b7d\u554a\uff01\uff01\u5b9e\u5728\u65e0\u804a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f60\u8981\u4e86\u89e3SD\u5361\u8d44\u6599\uff0c\u6587\u4ef6\u7cfb\u7edf\uff0cSPI\u901a\u4fe1\u7684\u76f8\u5173\u5185\u5bb9\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"http:\/\/bbs.ednchina.com\/BLOG_ARTICLE_2059372.HTM\">http:\/\/bbs.ednchina.com\/BLOG_ARTICLE_2059372.HTM<\/a><strong>\u57fa\u4e8eFPGA\u7684bmp\u56fe\u7247\u663e\u793a<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1\u3001\u6700\u8fd1\u7f16\u5199\u4e86\u51e0\u4e2a\u5de5\u5382\u9700\u8981\u7684test pattern\uff0c\u7528\u4e8eUHD120\u548cUHD60\u7684pannel\u4e0a\uff0c\u5176\u4e2dUHD120\u9700\u8981\u505a\u534a\u5206\u5c4f\u5904\u7406\uff0c\u5b58\u50a8\u4e00\u884c\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2\u3001\u6700\u8fd1\u5199\u4e86UHD120\/60\/30\u7f29\u653e\u5230FHD120\/60\/30\u7684\u7b97\u6cd5\uff0c\u91c7\u7528\u7684\u7b97\u6cd5\u662f\u53cc\u7ebf\u6027\u7b97\u6cd5\uff0c\u76f8\u90bb4\u70b9\u53d6\u5e73\u5747\u5f97\u5230\u7684\u3002\u9700\u8981\u8fdb\u884c\u884c\u7684\u5b58\u50a8\u3002\u6ce8\u610fDPRAM\u7684\u4f7f\u7528\u6280\u5de7\uff0c\u8bfb\u5199\u63a7\u5236\u903b\u8f91\u7684\u5b9e\u73b0\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3\u3001FHD120\/60\/30\u7ecf\u8fc7FRC\u5904\u7406\u540e VbyOne\u7684\u5b9e\u73b0\u662f\u4e2a\u6280\u672f\u96be\u70b9\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">I2C\u53bb\u62c9\u52a8\u7684\u65b9\u6cd5\uff0c\u503c\u5f97\u5b66\u4e60\u3002\u3002\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><a href=\"javascript:void(0);\"><img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/common.cnblogs.com\/images\/copycode.gif?w=640&#038;ssl=1\" alt=\"\u590d\u5236\u4ee3\u7801\"\/><\/a><\/figure>\n\n\n\n<pre class=\"wp-block-preformatted\"> 1 \/\/ local wires and regs\n 2 reg sdaDeb;\n 3 reg sclDeb;\n 4 reg [`DEB_I2C_LEN-1:0] sdaPipe;\n 5 reg [`DEB_I2C_LEN-1:0] sclPipe;\n 6 \n 7 reg [`SCL_DEL_LEN-1:0] sclDelayed;\n 8 reg [`SDA_DEL_LEN-1:0] sdaDelayed;\n 9 reg [1:0] startStopDetState;\n10 wire clearStartStopDet;\n11 wire sdaOut;\n12 wire sdaIn;\n13 wire [7:0] regAddr;\n14 wire [7:0] dataToRegIF;\n15 wire writeEn;\n16 wire [7:0] dataFromRegIF;\n17 reg [1:0] rstPipe;\n18 wire rstSyncToClk;\n19 reg startEdgeDet;\n20 \n21 assign sdaEn = sdaOut;\n22 assign sda = (sdaOut == 1'b0) ? 1'b0 : 1'bz;\n23 assign sdaIn = sda;\n24 \n25 \/\/ sync rst rsing edge to clk\n26 always @(posedge clk) begin\n27   if (rst == 1'b1)\n28     rstPipe &lt;= 2'b11;\n29   else\n30     rstPipe &lt;= {rstPipe[0], 1'b0};\n31 end\n32 \n33 assign rstSyncToClk = rstPipe[1];\n34 \n35 \/\/ debounce sda and scl\n36 always @(posedge clk) begin\n37   if (rstSyncToClk == 1'b1) begin\n38     sdaPipe &lt;= {`DEB_I2C_LEN{1'b1}};\n39     sdaDeb &lt;= 1'b1;\n40     sclPipe &lt;= {`DEB_I2C_LEN{1'b1}};\n41     sclDeb &lt;= 1'b1;\n42   end\n43   else begin\n44     sdaPipe &lt;= {sdaPipe[`DEB_I2C_LEN-2:0], sdaIn};\n45     sclPipe &lt;= {sclPipe[`DEB_I2C_LEN-2:0], scl};\n46     if (&amp;sclPipe[`DEB_I2C_LEN-1:1] == 1'b1)\n47       sclDeb &lt;= 1'b1;\n48     else if (|sclPipe[`DEB_I2C_LEN-1:1] == 1'b0)\n49       sclDeb &lt;= 1'b0;\n50     if (&amp;sdaPipe[`DEB_I2C_LEN-1:1] == 1'b1)\n51       sdaDeb &lt;= 1'b1;\n52     else if (|sdaPipe[`DEB_I2C_LEN-1:1] == 1'b0)\n53       sdaDeb &lt;= 1'b0;\n54   end\n55 end\n56 \n57 \n58 \/\/ delay scl and sda\n59 \/\/ sclDelayed is used as a delayed sampling clock\n60 \/\/ sdaDelayed is only used for start stop detection\n61 \/\/ Because sda hold time from scl falling is 0nS\n62 \/\/ sda must be delayed with respect to scl to avoid incorrect\n63 \/\/ detection of start\/stop at scl falling edge. \n64 always @(posedge clk) begin\n65   if (rstSyncToClk == 1'b1) begin\n66     sclDelayed &lt;= {`SCL_DEL_LEN{1'b1}};\n67     sdaDelayed &lt;= {`SDA_DEL_LEN{1'b1}};\n68   end\n69   else begin\n70     sclDelayed &lt;= {sclDelayed[`SCL_DEL_LEN-2:0], sclDeb};\n71     sdaDelayed &lt;= {sdaDelayed[`SDA_DEL_LEN-2:0], sdaDeb};\n72   end\n73 end\n74 \n75 \/\/ start stop detection\n76 always @(posedge clk) begin\n77   if (rstSyncToClk == 1'b1) begin\n78     startStopDetState &lt;= `NULL_DET;\n79     startEdgeDet &lt;= 1'b0;\n80   end\n81   else begin\n82     if (&amp;sclDelayed == 1'b1 &amp;&amp; sdaDelayed[`SDA_DEL_LEN-2] == 1'b0 &amp;&amp; sdaDelayed[`SDA_DEL_LEN-1] == 1'b1)\n83       startEdgeDet &lt;= 1'b1;\n84     else\n85       startEdgeDet &lt;= 1'b0;\n86     if (clearStartStopDet == 1'b1)\n87       startStopDetState &lt;= `NULL_DET;\n88     else if (&amp;sclDelayed == 1'b1) begin\n89       if (sdaDelayed[`SDA_DEL_LEN-2] == 1'b1 &amp;&amp; sdaDelayed[`SDA_DEL_LEN-1] == 1'b0) \n90         startStopDetState &lt;= `STOP_DET;\n91       else if (sdaDelayed[`SDA_DEL_LEN-2] == 1'b0 &amp;&amp; sdaDelayed[`SDA_DEL_LEN-1] == 1'b1)\n92         startStopDetState &lt;= `START_DET;\n93     end\n94   end\n95 end<\/pre>\n\n\n\n<figure class=\"wp-block-image\"><a href=\"javascript:void(0);\"><img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/common.cnblogs.com\/images\/copycode.gif?w=640&#038;ssl=1\" alt=\"\u590d\u5236\u4ee3\u7801\"\/><\/a><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u6807\u7b7e:&nbsp;<a href=\"https:\/\/www.cnblogs.com\/zlh840\/tag\/SD\/\">SD<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>[\u7b14\u8bb0]SD\u5361\u76f8\u5173\u8d44\u6599 &nbsp;ESD\u9759\u7535\u653e\u7535\u6a21\u5757 \u6765\u6e90\uff1ahttp:\/\/blog.sina.com.cn\/ &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/wp.ytdx.cc\/index.php\/2023\/03\/09\/petit-fat%e6%96%87%e4%bb%b6%e7%b3%bb%e7%bb%9f%e7%9b%b8%e5%85%b3%e5%a4%87%e5%bf%98\/\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">\u201cPetit FAT\u6587\u4ef6\u7cfb\u7edf\u76f8\u5173\u5907\u5fd8\u201d<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-174","post","type-post","status-publish","format-standard","hentry","category-date","entry"],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/wp.ytdx.cc\/index.php\/wp-json\/wp\/v2\/posts\/174","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wp.ytdx.cc\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wp.ytdx.cc\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wp.ytdx.cc\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wp.ytdx.cc\/index.php\/wp-json\/wp\/v2\/comments?post=174"}],"version-history":[{"count":2,"href":"https:\/\/wp.ytdx.cc\/index.php\/wp-json\/wp\/v2\/posts\/174\/revisions"}],"predecessor-version":[{"id":176,"href":"https:\/\/wp.ytdx.cc\/index.php\/wp-json\/wp\/v2\/posts\/174\/revisions\/176"}],"wp:attachment":[{"href":"https:\/\/wp.ytdx.cc\/index.php\/wp-json\/wp\/v2\/media?parent=174"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wp.ytdx.cc\/index.php\/wp-json\/wp\/v2\/categories?post=174"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wp.ytdx.cc\/index.php\/wp-json\/wp\/v2\/tags?post=174"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}