{"id":24447,"date":"2018-05-04T08:28:38","date_gmt":"2018-05-04T15:28:38","guid":{"rendered":"https:\/\/blog.digilentinc.com\/?p=24447"},"modified":"2021-06-09T14:50:09","modified_gmt":"2021-06-09T21:50:09","slug":"add-audio-in-and-out-to-designs-with-the-pmod-i2s2","status":"publish","type":"post","link":"https:\/\/digilent.com\/blog\/add-audio-in-and-out-to-designs-with-the-pmod-i2s2\/","title":{"rendered":"Add Audio In and Out to Designs with the Pmod I2S2"},"content":{"rendered":"

Those of you familiar with our Pmod<\/a>\u00a0line might recall that a subsection includes our audio Pmods<\/a>. The Pmod I2S<\/a> provides an audio output expansion board, that communicates with the host board via I2S. Based on the popularity of the Pmod I2S, I’m excited to introduce Pmod I2S2<\/a> which features stereo audio input and output.
\n\"\"<\/a><\/p>\n

The Pmod I2S2<\/a> connects to the host board via the 12-pin Pmod Connector. Accessible on this connector are two I2S interfaces, which communicate with the Cirrus CS5343 Multi-Bit Audio A\/D Converter and the Cirrus CS4344 Stereo\u00a0D\/A Converter, which are each connected to 3.5mm audio jacks. The Pmod I2S2 supports 24-bit resolution per channel and input sample rates of up to 108kHz. The Pmod also features Master or Slave mode on the line-in (Audio In) converter, which can be selected using the jumper in the center of the module.<\/p>\n

\"\"<\/a><\/p>\n

Along with the hardware, the Pmod I2S2 comes with reference material including an FPGA demo project pre-built for our Arty<\/a> boards. Below you can see the Pmod I2S2 connected to an Arty S7<\/a>, running the pass-through\u00a0demo. This demonstration project takes the audio input (from a computer) and passes it to the audio output (headphones).<\/p>\n

\"\"<\/a><\/p>\n

For this demonstration, I’ve hooked up the Analog Discovery 2<\/a> and set up the Logic Analyzer tool to decode the I2S protocol. Below you can see a screen grab of\u00a0WaveForms<\/a> showing the decoded data. Here I’m just playing a constant middle C.<\/p>\n

\"\"<\/a><\/p>\n

For more information on the Pmod I2S2,<\/a> check out its store page and reference material. And of course, if you have any questions, feel free to comment below or post on the Digilent Forum.<\/a><\/p>\n

\"\"<\/a>
May the 4th be with you.<\/figcaption><\/figure>\n
0<\/span><\/a><\/div><\/div>
Be the 1st to vote.<\/div><\/div>
<\/div>","protected":false},"excerpt":{"rendered":"

Looking for a comprehensive expansion board for all your stereo audio input and output needs? We have heard your requests, and are pleased to announce the arrival of the Pmod I2S2!<\/p>\n","protected":false},"author":18,"featured_media":24450,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[4327,35],"tags":[],"ppma_author":[4466],"class_list":["post-24447","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-projects","category-fpga"],"jetpack_featured_media_url":"https:\/\/digilent.com\/blog\/wp-content\/uploads\/2018\/05\/AD2-decoding-the-I2S-data-on-the-Pmod-I2S2-Middle-C-e1525445638435.jpg","authors":[{"term_id":4466,"user_id":18,"is_guest":0,"slug":"kaitlyn","display_name":"Kaitlyn Franz","avatar_url":"https:\/\/secure.gravatar.com\/avatar\/9276021eaa44781ce19f364cfca46ada25e1500769cf4803a095a5bae83c912a?s=96&d=mm&r=g","1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":"","9":"","10":""}],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/digilent.com\/blog\/wp-json\/wp\/v2\/posts\/24447","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\/18"}],"replies":[{"embeddable":true,"href":"https:\/\/digilent.com\/blog\/wp-json\/wp\/v2\/comments?post=24447"}],"version-history":[{"count":0,"href":"https:\/\/digilent.com\/blog\/wp-json\/wp\/v2\/posts\/24447\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/digilent.com\/blog\/wp-json\/wp\/v2\/media\/24450"}],"wp:attachment":[{"href":"https:\/\/digilent.com\/blog\/wp-json\/wp\/v2\/media?parent=24447"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/digilent.com\/blog\/wp-json\/wp\/v2\/categories?post=24447"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/digilent.com\/blog\/wp-json\/wp\/v2\/tags?post=24447"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/digilent.com\/blog\/wp-json\/wp\/v2\/ppma_author?post=24447"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}