{"id":233364,"date":"2015-06-10T22:00:00","date_gmt":"2015-06-10T22:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/traducteurs-dadresses-a-bus-i2c\/"},"modified":"2015-06-10T22:00:00","modified_gmt":"2015-06-10T22:00:00","slug":"traducteurs-dadresses-a-bus-i2c","status":"publish","type":"post","link":"https:\/\/test.ecinews.fr\/fr\/traducteurs-dadresses-a-bus-i2c\/","title":{"rendered":"Traducteurs d\u2019adresses \u00e0 bus I2C"},"content":{"rendered":"<p>Les conflits d&rsquo;adresses surgissent lorsque les dispositifs esclaves ayant la m&ecirc;me adresse mat&eacute;rielle arrivent sur un m&ecirc;me bus. Les solutions traditionnelles utilisent des multiplexeurs &agrave; interface I2C ou des commutateurs pour s&eacute;lectionner, par logiciel ou par broche, le dispositif esclave qui a besoin d&rsquo;une adresse.<br \/>\nCes circuits traducteurs sont des solutions transparentes qui remplacent les multiplexeurs et commutateurs &agrave; interface I2C. Ils ne n&eacute;cessitent pas de logiciel pour la programmation ou la validation ENABLE des lignes de contr&ocirc;le, ce qui permet aux dispositifs ma&icirc;tres d&rsquo;appeler directement les dispositifs esclaves en utilisant les adresses uniques qui sont configur&eacute;es par des r&eacute;sistances externes.<br \/>\nLes traducteurs d&rsquo;adresses g&eacute;n&egrave;rent une extension d&rsquo;adresses pour, &agrave; la fois, les syst&egrave;mes I2C et SMBus, et effectuent une mise &agrave; niveau de la tension pour les bus 2,5 V, 3,3 V et 5 V. Une protection contre les d&eacute;charges &eacute;lectrostatiques mod&egrave;le corps humain ESD HBM de &plusmn;4 kV, une pr&eacute;charge de 1 V et un filtrage d&rsquo;impulsion des broches de bus contribuent &agrave; faire que la robustesse de ces composants puisse supporter des applications d&rsquo;insertion et de retrait de cartes &agrave; chaud.<br \/>\nUn mode transparent (pass-through mode) donne la possibilit&eacute; aux utilisateurs de d&eacute;sactiver momentan&eacute;ment la traduction des adresses et autorise un appel g&eacute;n&eacute;ral d&rsquo;adresses par le dispositif ma&icirc;tre. De plus, une minuterie de bus bloqu&eacute; assure le contr&ocirc;le si la ligne SCL reste &agrave; l&rsquo;&eacute;tat bas ou haut pendant plus de 30 ms, abandonnant la traduction d&rsquo;adresses et reconnectant la broche SDAIN &agrave; la broche SDAOUT, quelle que soit la situation de bus bloqu&eacute;.\n<\/p>\n<hr \/>\n<p>Le mod&egrave;le simple LTC4316, &agrave; une entr&eacute;e \/ une sortie, est conditionn&eacute; en bo&icirc;tiers DFN 10 broches, de 3 x 3 mm, et MSOP 10 broches. Configur&eacute; en Y (une entr&eacute;e \/ deux sorties), le LTC4317 est propos&eacute; en bo&icirc;tier DFN 16 broches, de 5 x 3 mm. Enfin, la version double LTC4318 &agrave; deux entr&eacute;es \/ deux sorties est encapsul&eacute;e en bo&icirc;tier QFN 20 broches, de 4 x 4 mm. Ces trois composants sont pr&eacute;sent&eacute;s dans les gammes de temp&eacute;ratures commerciales et industrielles.<\/p>\n<p><a href=\"http:\/\/www.linear.com\/product\/LTC4316\" target=\"_blank\" title=\"www.linear.com\/product\/LTC4316\" rel=\"noopener\">www.linear.com\/product\/LTC4316<\/a><a href=\"http:\/\/www.linear.com\/product\/4317\" target=\"_blank\" title=\"www.linear.com\/product\/LTC4317\" rel=\"noopener\"><br \/>\nwww.linear.com\/product\/LTC4317<\/a><a href=\"http:\/\/www.linear.com\/product\/LTC4318\" target=\"_blank\" title=\"www.linear.com\/product\/LTC4318\" rel=\"noopener\"><br \/>\nwww.linear.com\/product\/LTC4318<\/a>\n<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Pour les syst\u00e8mes \u00e0 interface I2C\/SMBus, les traducteurs d\u2019adresses LTC4316, LTC4317 et LTC4318 de Linear Technology permettent \u00e0 plusieurs dispositifs esclaves, comme les capteurs de temp\u00e9rature, de travailler sous des adresses identiques pour communiquer individuellement avec le dispositif ma\u00eetre sans conflit ni codage par logiciel suppl\u00e9mentaire ou multiplexeurs I2C.<\/p>\n","protected":false},"author":22,"featured_media":233365,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[881],"tags":[],"domains":[47],"ppma_author":[1149],"class_list":["post-233364","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Traducteurs d\u2019adresses \u00e0 bus I2C ...<\/title>\n<meta name=\"description\" content=\"Pour les syst\u00e8mes \u00e0 interface I2C\/SMBus, les traducteurs d\u2019adresses LTC4316, LTC4317 et LTC4318 de Linear Technology permettent \u00e0 plusieurs dispositifs...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" 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