{"id":2267,"date":"2023-01-08T22:54:45","date_gmt":"2023-01-08T14:54:45","guid":{"rendered":"http:\/\/www.hellofpga.com\/?p=2267"},"modified":"2023-02-18T22:19:35","modified_gmt":"2023-02-18T14:19:35","slug":"zynq_pl_rst","status":"publish","type":"post","link":"http:\/\/www.hellofpga.com\/index.php\/2023\/01\/08\/zynq_pl_rst\/","title":{"rendered":"ZYNQ\u677fPL\u90e8\u5206\u7a0b\u5e8f\u6dfb\u52a0\u590d\u4f4d\u4fe1\u53f7\u7684\u51e0\u79cd\u529e\u6cd5"},"content":{"rendered":"\n<p>ZYNQ\u677f\u5b50\u672c\u8eab\u82af\u7247\u6709PS_POR_B\u548c\u548cPS_SRST \u786c\u4ef6\u548c\u8f6f\u4ef6\u590d\u4f4d\u4fe1\u53f7\u4e86\uff0c\u6240\u4ee5\u786c\u4ef6\u4e0a\u6ca1\u5fc5\u8981\u989d\u5916\u5728PL\u7aef\u518d\u589e\u52a0\u590d\u4f4d\u4fe1\u53f7\u4e86\uff0c\u90a3\u5982\u4f55\u4e3aPL\u7684\u7a0b\u5e8f\u589e\u52a0RST\u590d\u4f4d\u4fe1\u53f7\u5462\uff0c\u8fd9\u8fb9\u63d0\u4f9b\u4e86\u4e09\u79cd\u65b9\u5f0f \u53ef\u4f9b\u9009\u62e9<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u65b9\u6cd5\u4e00  PLL\u7684locked \u5145\u5f53\u590d\u4f4d\u4fe1\u53f7<\/h2>\n\n\n\n<p> \u7528FPGA\u7684PLL \u6a21\u5757\u7684locked\u4fe1\u53f7\u6765\u5145\u5f53RST_N\u590d\u4f4d\u4fe1\u53f7\uff0c Locked\u4fe1\u53f7\u662f\u7528\u6765\u89c2\u5bdfpll\u8f93\u51fa\u65f6\u949f\u662f\u5426\u548c\u8f93\u5165\u65f6\u949f\u9501\u5b9a\u3002\u5f53\u9501\u5b9a\u65f6\uff0c\u8fd9\u4e2aLocked\u4fe1\u53f7\u5c31\u7531\u4f4e\u7535\u5e73\u53d8\u4e3a\u9ad8\u7535\u5e73\uff0c\u800c\u8fd9\u4e2a\u4fe1\u53f7\u4e5f\u53ef\u4ee5\u4e3a\u6211\u4eec\u5145\u5f53rst_n\u4fe1\u53f7\u6765\u4f7f\u7528    clock wizard\u9ed8\u8ba4\u5c31\u4f1a\u6253\u5f00\u8fd9\u4e2alocked\u4fe1\u53f7\uff08\u5982\u679c\u6211\u4eec\u7528locked\u6765\u5145\u5f53\u590d\u4f4d\u4fe1\u53f7\uff0c\u4ee3\u8868\u8f93\u5165\u6211\u4eec\u4e0d\u4f7f\u7528\u5176\u4ed6\u590d\u4f4d\u4fe1\u53f7\uff0c\u6240\u4ee5 \u8fd9\u91cc\u53ef\u4ee5\u76f4\u63a5\u5173\u95ed\u8f93\u5165\u7684reset\u4fe1\u53f7\uff09<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"587\" src=\"http:\/\/www.hellofpga.com\/wp-content\/uploads\/2023\/01\/image-1-1024x587.png\" alt=\"\" class=\"wp-image-2268\" srcset=\"http:\/\/www.hellofpga.com\/wp-content\/uploads\/2023\/01\/image-1-1024x587.png 1024w, http:\/\/www.hellofpga.com\/wp-content\/uploads\/2023\/01\/image-1-300x172.png 300w, http:\/\/www.hellofpga.com\/wp-content\/uploads\/2023\/01\/image-1-768x440.png 768w, http:\/\/www.hellofpga.com\/wp-content\/uploads\/2023\/01\/image-1.png 1180w\" sizes=\"auto, (max-width: 767px) 89vw, (max-width: 1000px) 54vw, (max-width: 1071px) 543px, 580px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u65b9\u6cd5\u4e8c \u7528\u8ba1\u6570\u5668\u52a0initial\u7684\u65b9\u5f0f\u5145\u5f53\u590d\u4f4d\u4fe1\u53f7<\/h2>\n\n\n\n<p>\u6211\u4eec\u4e5f\u53ef\u4ee5\u4e3a\u81ea\u5df1\u5199\u4e00\u4e2a1\u79d2\u949f\u7684\u590d\u4f4d\u4fe1\u53f7\uff08\u53ef\u4ee5\u66f4\u77ed\uff09<\/p>\n\n\n\n<p>\u8fd9\u91cc\u6211\u4eec\u7528\u5230initial \u6765\u521d\u59cb\u5316\u8ba1\u6570\u5668\uff08\u56e0\u4e3a\u5982\u679c\u6ca1\u6709\u590d\u4f4d\u4fe1\u53f7\uff0c\u4e0a\u7535\u77ac\u95f4reg \u7684\u503c\u53ef\u80fd\u662f\u968f\u673a\u7684\uff0c\u4f46\u662f\u589e\u52a0\u4e86initial\uff0c\u4e0a\u7535\u540ereg\u7684\u503c\u4f1a\u88ab\u521d\u59cb\u5316\u4e3a\u6211\u4eec\u7ed9\u5b9a\u7684\u503c\uff09\u5177\u4f53\u7a0b\u5e8f\u5982\u4e0b<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">parameter T1MS = 26'd50_000_000 ; \/\/50M\u6676\u632f\u65f6\u949f\nreg [25:0]time_count;\/\/\u65f6\u949f\u8ba1\u6570\u5668\nreg rst_n;\n\ninitial begin\n    time_count=26'd0;\n    rst_n=1'b0;\nend\n\nalways@(posedge clk)\n    if(time_count&lt;T1MS)begin\n        time_count&lt;=time_count+1'b1; \n    end\n    else rst_n&lt;=1'b1;<\/pre>\n\n\n\n<p>\u7a0b\u5e8f\u5f88\u597d\u7406\u89e3\uff0c initial \u5757\u91cc \u521d\u59cb\u5316\u4e86 time_count\u7684\u503c\u4e3a0\uff0c\u521d\u59cb\u5316\u590d\u4f4d\u4fe1\u53f7rst_n\u7684\u503c\u4e3a0<\/p>\n\n\n\n<p>\u7136\u540e\u5728always\u5757\u4e2d \u5f53\u65f6\u95f4\u8ba1\u6570\u6ca1\u6ee1\u4e00\u79d2\u7684\u65f6\u5019 time_count\u4e00\u76f4\u81ea\u589e\uff0c \u5f53\u8ba1\u6570\u5668\u8ba1\u6570\u6ee1\u4e00\u79d2\u949f\u540e\uff0c\u8ba1\u6570\u5668\u505c\u6b62\u8ba1\u6570\uff0c\u5e76\u4e14\u5bc4\u5b58\u5668rst_n\u7531\u4f4e\u7535\u5e73 \u53d8\u6210\u4e86\u9ad8\u7535\u5e73\u3002 \u8fd9\u91cc\u7684rst_n \u6211\u4eec\u5c31\u53ef\u4ee5\u62ff\u6765\u5145\u5f53\u5404\u4e2a\u5176\u4ed6always \u5757\u7684\u590d\u4f4d\u4fe1\u53f7\u4f7f\u7528<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>\u65b9\u6cd5\u4e09 \u7528ZYNQ\u6a21\u5757\u7684\u590d\u4f4d\u4fe1\u53f7\uff08\u6bd4\u8f83\u5e38\u7528\uff09<\/p>\n\n\n\n<p>\u56e0\u4e3a \u4e0d\u8bba\u662fTF\u542f\u52a8\uff0c\u8fd8\u662f \u7a0b\u5e8f\u56fa\u5316\u5230 FLASH\u542f\u52a8\uff0c\u6211\u4eec\u90fd\u5fc5\u987b\u6dfb\u52a0ZYNQ\u6838\u624d\u80fd\u5b8c\u6210\u4e0a\u7535\u52a0\u8f7d\u542f\u52a8\u7684\u5de5\u4f5c\uff0c\u53ef\u4ee5\u8fd9\u4e48\u8bf4\u53ea\u8981\u4e00\u4e2a\u5b8c\u6574\u7684\u5de5\u7a0b\uff0c\u90fd\u5c11\u4e0d\u4e86ZYNQ\u6838\uff0c\u6240\u4ee5\u8fd9\u91cc\u76f4\u63a5\u7528ZYNQ PS\u73b0\u6210\u7684\u590d\u4f4d\u4fe1\u53f7\u662f\u6700\u65b9\u4fbf\u4e5f\u662f\u6700\u7406\u6240\u5f53\u7136\u7684\u3002  \u5728blockdesign \u91cc\u6dfb\u52a0zynq \u6838\u540e\uff0czynq\u6838\u9ed8\u8ba4\u5c31\u5e26\u4e86FCLK_RESET0_N\u4fe1\u53f7\uff0c\u8fd9\u4e2a\u4fe1\u53f7\u76f4\u63a5\u53ef\u4ee5\u5145\u5f53\u5404\u4e2a\u6a21\u5757\u7684\u590d\u4f4d\u4fe1\u53f7\u4f7f\u7528\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"984\" height=\"435\" src=\"http:\/\/www.hellofpga.com\/wp-content\/uploads\/2023\/01\/image-2.png\" alt=\"\" class=\"wp-image-2270\" srcset=\"http:\/\/www.hellofpga.com\/wp-content\/uploads\/2023\/01\/image-2.png 984w, http:\/\/www.hellofpga.com\/wp-content\/uploads\/2023\/01\/image-2-300x133.png 300w, http:\/\/www.hellofpga.com\/wp-content\/uploads\/2023\/01\/image-2-768x340.png 768w\" sizes=\"auto, (max-width: 767px) 89vw, (max-width: 1000px) 54vw, (max-width: 1071px) 543px, 580px\" \/><\/figure>\n\n\n\n<p>\u5f53\u7136\u8fd8\u6709 Block Design \u81ea\u52a8\u751f\u6210\u7684System reset \u6a21\u5757\u4ea7\u751f\u7684\u590d\u4f4d\u4fe1\u53f7\u4e5f\u662f\u53ef\u4ee5\u4f7f\u7528\u7684\u3002<\/p>\n\n\n\n<p><strong>\u6dfb\u52a0\u590d\u4f4d\u7684\u65b9\u6cd5\u8fd8\u6709\u5f88\u591a\u79cd\uff0c\u5927\u5bb6\u4e5f\u53ef\u4ee5\u81ea\u884c\u8111\u6d1e\u81ea\u884c\u5c1d\u8bd5<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>ZYNQ\u677f\u5b50\u672c\u8eab\u82af\u7247\u6709PS_POR_B\u548c\u548cPS_SRST \u786c\u4ef6\u548c\u8f6f\u4ef6\u590d\u4f4d\u4fe1\u53f7\u4e86\uff0c\u6240\u4ee5\u786c\u4ef6\u4e0a\u6ca1\u5fc5\u8981\u989d\u5916\u5728PL\u7aef\u518d\u589e\u52a0\u590d\u4f4d\u4fe1\u53f7\u4e86\uff0c\u90a3\u5982\u4f55\u4e3aPL\u7684\u7a0b\u5e8f\u589e\u52a0RST\u590d\u4f4d\u4fe1\u53f7\u5462\uff0c\u8fd9\u8fb9\u63d0\u4f9b\u4e86\u4e09\u79cd\u65b9\u5f0f \u53ef\u4f9b\u9009\u62e9<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,10,7,13],"tags":[],"class_list":["post-2267","post","type-post","status-publish","format-standard","hentry","category-ebaz4205","category-smart-zynq-board","category-tiny-zynq","category-tiny-zynq-2"],"views":2275,"_links":{"self":[{"href":"http:\/\/www.hellofpga.com\/index.php\/wp-json\/wp\/v2\/posts\/2267","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.hellofpga.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.hellofpga.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.hellofpga.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.hellofpga.com\/index.php\/wp-json\/wp\/v2\/comments?post=2267"}],"version-history":[{"count":3,"href":"http:\/\/www.hellofpga.com\/index.php\/wp-json\/wp\/v2\/posts\/2267\/revisions"}],"predecessor-version":[{"id":2272,"href":"http:\/\/www.hellofpga.com\/index.php\/wp-json\/wp\/v2\/posts\/2267\/revisions\/2272"}],"wp:attachment":[{"href":"http:\/\/www.hellofpga.com\/index.php\/wp-json\/wp\/v2\/media?parent=2267"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.hellofpga.com\/index.php\/wp-json\/wp\/v2\/categories?post=2267"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.hellofpga.com\/index.php\/wp-json\/wp\/v2\/tags?post=2267"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}