{"id":31023,"date":"2024-10-01T10:43:55","date_gmt":"2024-10-01T17:43:55","guid":{"rendered":"https:\/\/digilent.com\/blog\/?p=31023"},"modified":"2024-10-01T13:13:03","modified_gmt":"2024-10-01T20:13:03","slug":"ready-to-learn-vhdl-get-started-here","status":"publish","type":"post","link":"https:\/\/digilent.com\/blog\/ready-to-learn-vhdl-get-started-here\/","title":{"rendered":"Ready to Learn VHDL? Get Started Here!"},"content":{"rendered":"<p>If you&#8217;re ready to dive into VHDL and bring your digital design ideas to life, our <a href=\"https:\/\/digilent.com\/reference\/programmable-logic\/guides\/getting-started-with-vhdl\">Getting Started with VHDL guide <\/a>on the Digilent Reference site is the perfect starting point. It covers everything from syntax to common design patterns, and it&#8217;s tailored for use with Digilent FPGA boards like the <a href=\"https:\/\/digilent.com\/reference\/programmable-logic\/basys-3\/start\">Basys 3<\/a> or <a href=\"https:\/\/digilent.com\/reference\/programmable-logic\/nexys-a7\/start\">Nexys A7<\/a>.<\/p>\n<p><span data-contrast=\"auto\" xml:lang=\"EN-US\" lang=\"EN-US\" class=\"TextRun SCXW150574364 BCX8\"><span class=\"NormalTextRun SCXW150574364 BCX8\">VHDL is a crucial language and tool for designing digital and electronic systems. <\/span><span class=\"NormalTextRun SCXW150574364 BCX8\">It&#8217;s<\/span><span class=\"NormalTextRun SCXW150574364 BCX8\"> used to describe the behavior of circuits, which can then be simulated and implemented in real hardware designs, whether on reprogrammable hardware like FPGAs, or in <u>a<\/u>pplication-<u>s<\/u>pecific <u>i<\/u>ntegrated <u>c<\/u>ircuits (ASICs). <span data-contrast=\"auto\" xml:lang=\"EN-US\" lang=\"EN-US\" class=\"TextRun SCXW234972203 BCX8\"><span class=\"NormalTextRun SCXW234972203 BCX8\">The acronym stands for <\/span><\/span><span data-contrast=\"auto\" xml:lang=\"EN-US\" lang=\"EN-US\" class=\"TextRun Underlined SCXW234972203 BCX8\"><span class=\"NormalTextRun SCXW234972203 BCX8\">V<\/span><\/span><span data-contrast=\"auto\" xml:lang=\"EN-US\" lang=\"EN-US\" class=\"TextRun SCXW234972203 BCX8\"><span class=\"NormalTextRun SCXW234972203 BCX8\">HSIC <\/span><\/span><span data-contrast=\"auto\" xml:lang=\"EN-US\" lang=\"EN-US\" class=\"TextRun Underlined SCXW234972203 BCX8\"><span class=\"NormalTextRun SCXW234972203 BCX8\">H<\/span><\/span><span data-contrast=\"auto\" xml:lang=\"EN-US\" lang=\"EN-US\" class=\"TextRun SCXW234972203 BCX8\"><span class=\"NormalTextRun SCXW234972203 BCX8\">ardware <\/span><\/span><span data-contrast=\"auto\" xml:lang=\"EN-US\" lang=\"EN-US\" class=\"TextRun Underlined SCXW234972203 BCX8\"><span class=\"NormalTextRun SCXW234972203 BCX8\">D<\/span><\/span><span data-contrast=\"auto\" xml:lang=\"EN-US\" lang=\"EN-US\" class=\"TextRun SCXW234972203 BCX8\"><span class=\"NormalTextRun SCXW234972203 BCX8\">escription <\/span><\/span><span data-contrast=\"auto\" xml:lang=\"EN-US\" lang=\"EN-US\" class=\"TextRun Underlined SCXW234972203 BCX8\"><span class=\"NormalTextRun SCXW234972203 BCX8\">L<\/span><\/span><span data-contrast=\"auto\" xml:lang=\"EN-US\" lang=\"EN-US\" class=\"TextRun SCXW234972203 BCX8\"><span class=\"NormalTextRun SCXW234972203 BCX8\">anguage, which in turn stands \u201c<u>V<\/u>ery <u>H<\/u>igh-<u>S<\/u>peed <u>I<\/u>ntegrated <u>C<\/u>ircuit\u201d Hardware Description Language.<\/span><\/span><\/span><\/span><span data-contrast=\"auto\" xml:lang=\"EN-US\" lang=\"EN-US\" class=\"TextRun SCXW150574364 BCX8\" style=\"font-size: 1rem;\"><span class=\"NormalTextRun SCXW150574364 BCX8\">\u00a0<\/span><span class=\"NormalTextRun SCXW150574364 BCX8\">We all love highly nested acronyms . <\/span><span class=\"NormalTextRun SCXW150574364 BCX8\">VHSIC was a program run in th<\/span><span class=\"NormalTextRun SCXW150574364 BCX8\">e 1980s tha<\/span><span class=\"NormalTextRun SCXW150574364 BCX8\">t <\/span><span class=\"NormalTextRun SCXW150574364 BCX8\">established<\/span><span class=\"NormalTextRun SCXW150574364 BCX8\"> much of the core of how digital circuits are de<\/span><span class=\"NormalTextRun SCXW150574364 BCX8\">sign<\/span><span class=\"NormalTextRun SCXW150574364 BCX8\">ed today <\/span><span class=\"NormalTextRun ContextualSpellingAndGrammarErrorV2Themed SCXW150574364 BCX8\">and<\/span><span class=\"NormalTextRun SCXW150574364 BCX8\"> given extensive use of FPGAs in prototyping and testing ASIC designs, has influenced much of how projects targeting FPGAs are built today.<\/span><\/span><span class=\"EOP SCXW150574364 BCX8\" data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335551550&quot;:0,&quot;335551620&quot;:0,&quot;335559738&quot;:240,&quot;335559739&quot;:240,&quot;335559740&quot;:278}\" style=\"font-size: 1rem;\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">Unlike traditional programming languages, VHDL handles both sequential and concurrent executions, making it ideal for describing the complex interactions within digital circuits. In simulation, it can also incorporate timing specifications to accurately model the behavior of hardware components.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335551550&quot;:0,&quot;335551620&quot;:0,&quot;335559738&quot;:240,&quot;335559739&quot;:240,&quot;335559740&quot;:278}\">\u00a0<\/span><\/p>\n<p><b><span data-contrast=\"auto\">Key Concepts and Benefits of VHDL:<\/span><\/b><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:240,&quot;335559739&quot;:240,&quot;335559740&quot;:279}\">\u00a0<\/span><\/p>\n<ul>\n<li><span data-contrast=\"auto\" xml:lang=\"EN-US\" lang=\"EN-US\" class=\"TextRun SCXW51344376 BCX8\"><span class=\"NormalTextRun SCXW51344376 BCX8\">Hardware Description:<\/span><span class=\"NormalTextRun SCXW51344376 BCX8\"> VHDL <\/span><span class=\"NormalTextRun SCXW51344376 BCX8\">provides<\/span><span class=\"NormalTextRun SCXW51344376 BCX8\"> a precise way to describe the functionality of digital circuits, down to the level of individual registers and the nets connecting them<\/span><span class=\"NormalTextRun SCXW51344376 BCX8\"> <\/span><span class=\"NormalTextRun CommentStart CommentHighlightPipeRestV2 CommentHighlightRest SCXW51344376 BCX8\">\u2013 what one might call the <\/span><span class=\"NormalTextRun CommentHighlightRest SCXW51344376 BCX8\"><u>R<\/u><\/span><span class=\"NormalTextRun CommentHighlightRest SCXW51344376 BCX8\">egister <\/span><span class=\"NormalTextRun CommentHighlightRest SCXW51344376 BCX8\"><u>T<\/u><\/span><span class=\"NormalTextRun CommentHighlightRest SCXW51344376 BCX8\">ransfer <\/span><span class=\"NormalTextRun CommentHighlightRest SCXW51344376 BCX8\"><u>L<\/u><\/span><span class=\"NormalTextRun CommentHighlightRest SCXW51344376 BCX8\">evel (RTL)<\/span><span class=\"NormalTextRun CommentHighlightRest SCXW51344376 BCX8\">.<\/span><\/span><span class=\"EOP CommentHighlightPipeRestV2 SCXW51344376 BCX8\" data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:279}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"auto\" xml:lang=\"EN-US\" lang=\"EN-US\" class=\"TextRun SCXW126813838 BCX8\"><span class=\"NormalTextRun SCXW126813838 BCX8\">Flexibility<\/span><span class=\"NormalTextRun SCXW126813838 BCX8\"> and <\/span><span class=\"NormalTextRun SCXW126813838 BCX8\">Abstra<\/span><span class=\"NormalTextRun SCXW126813838 BCX8\">ction<\/span><span class=\"NormalTextRun SCXW126813838 BCX8\">:<\/span><\/span><span data-contrast=\"auto\" xml:lang=\"EN-US\" lang=\"EN-US\" class=\"TextRun SCXW126813838 BCX8\"><span class=\"NormalTextRun SCXW126813838 BCX8\"> VHDL supports various design methodologies, including top-down and bottom-up approaches, structural and behavioral descriptions of circuits. When fine-tuned control o<\/span><span class=\"NormalTextRun SCXW126813838 BCX8\">ver a de<\/span><span class=\"NormalTextRun SCXW126813838 BCX8\">sig<\/span><span class=\"NormalTextRun SCXW126813838 BCX8\">n is <\/span><span class=\"NormalTextRun SCXW126813838 BCX8\">req<\/span><span class=\"NormalTextRun SCXW126813838 BCX8\">uired<\/span><span class=\"NormalTextRun SCXW126813838 BCX8\">, vendor primitives can be used, and when more flexibility <\/span><span class=\"NormalTextRun SCXW126813838 BCX8\">in choice of<\/span><span class=\"NormalTextRun SCXW126813838 BCX8\"> chip ve<\/span><span class=\"NormalTextRun SCXW126813838 BCX8\">ndo<\/span><span class=\"NormalTextRun SCXW126813838 BCX8\">r is <\/span><span class=\"NormalTextRun SCXW126813838 BCX8\">req<\/span><span class=\"NormalTextRun SCXW126813838 BCX8\">uired<\/span><span class=\"NormalTextRun SCXW126813838 BCX8\">, many components can be inferred.<\/span><\/span><span class=\"EOP SCXW126813838 BCX8\" data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:279}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"auto\" xml:lang=\"EN-US\" lang=\"EN-US\" class=\"TextRun SCXW122780061 BCX8\"><span class=\"NormalTextRun SCXW122780061 BCX8\">Simulation:<\/span><\/span><span data-contrast=\"auto\" xml:lang=\"EN-US\" lang=\"EN-US\" class=\"TextRun SCXW122780061 BCX8\"><span class=\"NormalTextRun SCXW122780061 BCX8\"> Through standard tools, whether from chip vendors or the open-source community, VHDL designs can be simulated to verify their correctness before <\/span><span class=\"NormalTextRun SCXW122780061 BCX8\">or after <\/span><span class=\"NormalTextRun SCXW122780061 BCX8\">implementation<\/span><span class=\"NormalTextRun SCXW122780061 BCX8\"> and synthesis<\/span><span class=\"NormalTextRun SCXW122780061 BCX8\">, before or after specific timing data for the design as mapped onto a specific chip is known<\/span><span class=\"NormalTextRun SCXW122780061 BCX8\">.<\/span><\/span><span class=\"EOP SCXW122780061 BCX8\" data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:279}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"auto\" xml:lang=\"EN-US\" lang=\"EN-US\" class=\"TextRun SCXW235160047 BCX8\"><span class=\"NormalTextRun SCXW235160047 BCX8\">Code Reusability:<\/span><\/span><span data-contrast=\"auto\" xml:lang=\"EN-US\" lang=\"EN-US\" class=\"TextRun SCXW235160047 BCX8\"><span class=\"NormalTextRun SCXW235160047 BCX8\"> Through modular design, automatic generation of complex structures, and genericization of custom components, VHDL promotes efficient design practices and workflows by allowing substantial reuse of existing code.<\/span><\/span><span class=\"EOP SCXW235160047 BCX8\" data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:279}\">\u00a0<\/span><\/li>\n<\/ul>\n<p><b><span data-contrast=\"auto\">Want to learn more about VHDL?<\/span><\/b><span data-contrast=\"auto\"> This guide on our Reference site dives deeper into the language&#8217;s syntax, semantics, and common design patterns. It&#8217;s a valuable resource for both beginners and experienced designers alike.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:240,&quot;335559739&quot;:240,&quot;335559740&quot;:279}\">\u00a0<\/span><\/p>\n<p><a href=\"https:\/\/digilent.com\/reference\/programmable-logic\/guides\/getting-started-with-vhdl\"><span data-contrast=\"none\">Understanding VHDL &#8211; Digilent Reference<\/span><\/a><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:240,&quot;335559739&quot;:240,&quot;335559740&quot;:279}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\" xml:lang=\"EN-US\" lang=\"EN-US\" class=\"TextRun SCXW175340928 BCX8\"><span class=\"NormalTextRun SCXW175340928 BCX8\">By understanding VHDL, <\/span><span class=\"NormalTextRun SCXW175340928 BCX8\">you&#8217;ll<\/span><span class=\"NormalTextRun SCXW175340928 BCX8\"> <\/span><span class=\"NormalTextRun SCXW175340928 BCX8\">im<\/span><span class=\"NormalTextRun SCXW175340928 BCX8\">prove your ability to pro<\/span><span class=\"NormalTextRun SCXW175340928 BCX8\">duce <\/span><span class=\"NormalTextRun SCXW175340928 BCX8\">efficient digital designs.<\/span><\/span><span class=\"EOP SCXW175340928 BCX8\" data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:240,&quot;335559739&quot;:240,&quot;335559740&quot;:279}\">\u00a0<\/span><\/p>\n<div class='watch-action'><div class='watch-position align-left'><div class='action-like'><a class='lbg-style6 like-31023 jlk' data-task='like' data-post_id='31023' data-nonce='ee750c7abc' rel='nofollow'><img src='https:\/\/digilent.com\/blog\/wp-content\/plugins\/wti-like-post-pro\/images\/pixel.gif' title='Like' \/><span class='lc-31023 lc'>0<\/span><\/a><\/div><div class='action-unlike'><a class='unlbg-style6 unlike-31023 jlk' data-task='unlike' data-post_id='31023' data-nonce='ee750c7abc' rel='nofollow'><img src='https:\/\/digilent.com\/blog\/wp-content\/plugins\/wti-like-post-pro\/images\/pixel.gif' title='Unlike' \/><span class='unlc-31023 unlc'>0<\/span><\/a><\/div><\/div> <div class='status-31023 status align-left'>Be the 1st to vote.<\/div><\/div><div class='wti-clear'><\/div>","protected":false},"excerpt":{"rendered":"<p>If you&#8217;re ready to dive into VHDL and bring your digital design ideas to life, our Getting Started with VHDL guide on the Digilent Reference site is the perfect starting &hellip; <\/p>\n","protected":false},"author":64,"featured_media":31024,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4323,35,1563],"tags":[5021,4852,5026,4771,5029,5028,4365,4901,4953,4954,1662,5020,5023,5030,5022,5025,4599,5027,5024,4395,4396],"ppma_author":[4458],"class_list":["post-31023","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-software","category-fpga","category-guide","tag-asic","tag-basys-3","tag-behavioral-modeling","tag-circuit-design","tag-code-reuse","tag-design-methodology","tag-digilent","tag-digital-design","tag-electronics","tag-engineering","tag-fpga","tag-hardware-description-language","tag-hdl","tag-nexys-a7","tag-programming-language","tag-rtl","tag-simulation","tag-structural-modeling","tag-synthesis","tag-verilog","tag-vhdl"],"jetpack_featured_media_url":"https:\/\/digilent.com\/blog\/wp-content\/uploads\/2024\/10\/2024-September-Newsletter-UnderstandingVHDL-735x400-1.png","authors":[{"term_id":4458,"user_id":64,"is_guest":0,"slug":"kdokes","display_name":"Kyli Dokes","avatar_url":"https:\/\/secure.gravatar.com\/avatar\/fc7baf2430001248188e564ea9d7d1ae?s=96&d=mm&r=g","author_category":"","user_url":"","last_name":"Dokes","last_name_2":"","first_name":"Kyli","first_name_2":"","job_title":"","description":""}],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/digilent.com\/blog\/wp-json\/wp\/v2\/posts\/31023","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/digilent.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/digilent.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/digilent.com\/blog\/wp-json\/wp\/v2\/users\/64"}],"replies":[{"embeddable":true,"href":"https:\/\/digilent.com\/blog\/wp-json\/wp\/v2\/comments?post=31023"}],"version-history":[{"count":12,"href":"https:\/\/digilent.com\/blog\/wp-json\/wp\/v2\/posts\/31023\/revisions"}],"predecessor-version":[{"id":31036,"href":"https:\/\/digilent.com\/blog\/wp-json\/wp\/v2\/posts\/31023\/revisions\/31036"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/digilent.com\/blog\/wp-json\/wp\/v2\/media\/31024"}],"wp:attachment":[{"href":"https:\/\/digilent.com\/blog\/wp-json\/wp\/v2\/media?parent=31023"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/digilent.com\/blog\/wp-json\/wp\/v2\/categories?post=31023"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/digilent.com\/blog\/wp-json\/wp\/v2\/tags?post=31023"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/digilent.com\/blog\/wp-json\/wp\/v2\/ppma_author?post=31023"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}