{"id":7801,"date":"2023-08-17T12:54:54","date_gmt":"2023-08-17T04:54:54","guid":{"rendered":"http:\/\/www.zhuoxunweihong.com\/?p=7801"},"modified":"2023-08-17T12:55:17","modified_gmt":"2023-08-17T04:55:17","slug":"lt84101d-%e5%8f%8c%e7%ab%af%e5%8f%a3%e5%8f%8c%e5%90%91-usb3-1-gen-1-dual-port-bi-directional-usb3-1-gen-1-re-driver","status":"publish","type":"post","link":"https:\/\/www.zhuoxunweihong.com\/?p=7801","title":{"rendered":"LT84101D&#8211;\u53cc\u7aef\u53e3\u53cc\u5411 USB3.1 Gen-1 Dual-Port Bi-directional USB3.1 Gen-1 Re-driver"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"268\" src=\"http:\/\/www.zhuoxunweihong.com\/wp-content\/uploads\/2023\/08\/image-37-1024x268.png\" alt=\"\" class=\"wp-image-7802\" srcset=\"https:\/\/www.zhuoxunweihong.com\/wp-content\/uploads\/2023\/08\/image-37-1024x268.png 1024w, https:\/\/www.zhuoxunweihong.com\/wp-content\/uploads\/2023\/08\/image-37-768x201.png 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><strong>1. \u63cf\u8ff0<\/strong><\/p>\n\n\n\n<p>LT84101D \u662f\u4e00\u6b3e\u6df1\u5ea6\u4f18\u5316\u7684 USB \u518d\u9a71\u52a8\u5668 IC\uff0c\u901a\u8fc7\u5206\u522b\u5728 USB3.1 Gen-1 \u548c USB2.0 \u89c4\u8303\u4e0b\u6267\u884c\u7535\u7f06\u6216\u7535\u8def\u677f\u8d70\u7ebf\u635f\u8017\u8865\u507f\u6765\u589e\u5f3a\u4fe1\u53f7\u8d28\u91cf\u3002<br>\u5bf9\u4e8e USB3.1 Gen-1 \u64cd\u4f5c\uff0cLT84101D \u662f\u4e00\u6b3e\u5177\u6709\u9ad8\u7ea7\u7535\u6e90\u7ba1\u7406\u7684\u53cc\u7aef\u53e3\u53cc\u5411 5 Gb\/s \u8d85\u9ad8\u901f \uff08SS\uff09 \u8f6c\u63a5\u9a71\u52a8\u5668\u5668\u4ef6\u3002\u5b83\u7531\u53cc\u901a\u9053SSRX-SSTX\u5bf9\u7ec4\u6210\u3002SSRX \u5b9e\u73b0\u4e86\u591a\u7ea7\u53ef\u7f16\u7a0b\u7ebf\u6027\u5747\u8861\u5668\uff0c\u652f\u6301\u56e0\u7801\u95f4\u5e72\u6270 \uff08ISI\uff09 \u5f15\u8d77\u7684\u6700\u5927 25dB \u635f\u8017\u8865\u507f\u3002SSTX \u901a\u8fc7\u591a\u7ea7\u53ef\u7f16\u7a0b\u8f93\u51fa\u6446\u5e45\u548c\u9ad8\u8fbe 6dB \u7684\u53bb\u52a0\u91cd\u91cd\u65b0\u9a71\u52a8\u63a5\u6536\u4fe1\u53f7\u3002\u6bcf\u4e2a\u7aef\u53e3\u8fd8\u96c6\u6210\u4e86\u4f4e\u9891\u5468\u671f\u4fe1\u53f7 \uff08LFPS\uff09 \u68c0\u6d4b\u3001\u901a\u8fc7\u8fdc\u7a0b\u63a5\u6536\u5668\u7ec8\u7aef\u611f\u5e94\u548c\u72b6\u6001\u673a\u63a7\u5236\u7684\u81ea\u52a8\u63d2\u62d4\u3002<br>\u5bf9\u4e8eUSB2.0\u64cd\u4f5c\uff0c\u5b83\u901a\u8fc7USB\u7535\u7f06\u63d0\u4f9b\u4fe1\u53f7\u4f20\u8f93\u6269\u5c55\uff0c\u652f\u6301\u9ad8\u901f\uff0c\u5168\u901f\u548c\u4f4e\u901f\u3002\u4ece\u82af\u7247\u5230\u4e3b\u673a\u6216\u8bbe\u5907\u7684\u6700\u5927\u6269\u5c55\u957f\u5ea6\u53ef\u8fbe 10m\u3002\u5b83\u6d88\u9664\u4e86USB5.2\u89c4\u8303\u76840\u7c73\u8ddd\u79bb\u9650\u5236\u3002\u53ef\u4ee5\u5bf9\u7528\u4e8e\u6269\u5c55\u529f\u80fd\u7684\u5185\u90e8\u5747\u8861\u548c\u9884\u52a0\u91cd\u8fdb\u884c\u7f16\u7a0b\u3002<br>LT84101D \u5728\u5185\u90e8\u96c6\u6210\u4e86\u4e00\u4e2a 8 \u4f4d OCM \u548c\u95ea\u5b58 \uff08\u5806\u53e0\u82af\u7247\uff09 \u6765\u8fd0\u884c\u7a0b\u5e8f\u3002LT84101D \u8fd8\u652f\u6301\u5728\u7ebf\u8f6f\u4ef6\u5347\u7ea7\u3002<br>LT84101D \u91c7\u7528\u5148\u8fdb\u7684 CMOS \u5de5\u827a\u5236\u9020\uff0c\u91c7\u7528\u5c0f\u5916\u5f62 5mmx5mm QFN40 \u5c01\u88c5\u3002\u8be5\u5c01\u88c5\u7b26\u5408 RoHS \u6807\u51c6\uff0c\u989d\u5b9a\u5de5\u4f5c\u6e29\u5ea6\u8303\u56f4\u4e3a -40\u00b0C \u81f3 +85\u00b0C.2<\/p>\n\n\n\n<p><strong>\u3002\u7279\u70b9<\/strong><\/p>\n\n\n\n<p>\u2022 \u517c\u5bb9 USB3.1 Gen-1 \u548c USB2.0 \u6807\u51c6<br>\u2022 \u652f\u6301 2 \u7aef\u53e3 USB3.1 Gen-1 \u64cd\u4f5c\u2022 \u652f\u6301\u540c\u65f6\u8fd0\u884c\u4e24\u4e2a\u72ec\u7acb\u6570\u636e\u4f20\u8f93\uff0c\u6bcf\u4e2a\u7aef\u53e3\u7684\u6570\u636e\u901f\u7387\u4e3a 5Gb\/s \u2022 \u652f\u6301 LFPS \u68c0\u6d4b\u548c\u63a5\u6536\u68c0\u6d4b\u2022 \u652f\u6301\u4e00\u4e2a USB2.0 \u7aef\u53e3<br>\uff0c\u6570\u636e\u901f\u7387<br>\u4e3a 480 Mb\/s\u2022 \u652f\u6301 USB2.0 \u70ed\u63d2\u62d4\u68c0\u6d4b<\/p>\n\n\n\n<p>\u2022 \u6700\u5927 USB2.0<br>\u7535\u7f06\u5ef6\u957f\u957f\u5ea6\u53ef\u8fbe 10 \u7c73<br>\u2022 \u53ef\u7f16\u7a0b\u8f93\u5165\u5747\u8861\u2022 \u53ef\u7f16\u7a0b\u8f93\u51fa\u6446\u5e45\u548c\u53bb\u52a0\u91cd\u2022 \u7528\u4e8e\u56fa\u4ef6\u5347\u7ea7\u7684\u5185\u90e8 MCU \u548c\u95ea\u5b58<br>\u2022 \u652f\u6301\u5916\u90e8 I2C \u8c03\u8bd5<br>\u2022 1.8V\/3.3V \u53cc\u7535\u6e90<\/p>\n\n\n\n<p>\u2022 \u5c01\u88c5\u5728 5mmx5mm QFN40<\/p>\n\n\n\n<p>\u4e2d 3.<br><strong>\u5e94\u7528<\/strong><\/p>\n\n\n\n<p>\u2022 \u667a\u80fd\u624b\u673a\u3001\u5e73\u677f\u7535\u8111\u548c\u5176\u4ed6\u79fb\u52a8\u8bbe\u5907<br>\u2022 \u6570\u5b57\u7535\u89c6\u548c\u6570\u636e\u5b58\u50a8\u8bbe\u5907\u2022 PC\u3001\u7b14\u8bb0\u672c\u7535\u8111\u3001\u4e00\u4f53\u673a\u548c\u6269\u5c55\u575e<\/p>\n\n\n\n<p>\u2022 VR\/AR HMD \u548c USB3.1 \u7535\u7f06\u5ef6\u957f\u5668<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><strong>1. Description<\/strong><br><br>LT84101D is a deeply-optimized USB re-driver IC that enhances signal quality by performing cable or board trace loss compensation under USB3.1 Gen-1 and USB2.0 specification respectively.<br>For USB3.1 Gen-1operation, LT84101D is a dual-port bi-directional 5 Gb\/s SuperSpeed (SS) re-driver device with advanced power management. It is composed of a dual-channel SSRX-SSTX pair. The SSRX implements a multi-level programmable linear equalizer, supporting maximum 25dB loss compensation due to Inter-Symbol Interference (ISI). The SSTX re-drives the received signal with multi-level programmable output swing and up to 6dB de-emphasis. A Low-Frequency Periodic Signal (LFPS) detection, automatic plug and unplug by remote receiver termination sensing and state machine control is also integrated on each port.<br>For USB2.0 operating, it provides signal transferring extension over USB cable, which supports high speed, full speed and low speed. The maximum extension length can be up to 10m from the chip to host or device. It eliminates the 5m distance limitation of USB2.0 specification. Internal equalization and pre-emphasis used for extension function can be programmed.<br>LT84101D internally integrates an 8-bit OCM and flash memory (stacked die) to run program. Online software upgrade is also supported for LT84101D.<br>The LT84101D is fabricated in advanced CMOS process and implemented in a small outline 5mmx5mm QFN40 package. This package is RoHS compliant and specified to operate from -40\u00b0C to +85\u00b0C.<br><br><strong>2. Features<\/strong><br><br>\u2022 Compatible with USB3.1 Gen-1 and USB2.0 Standard<br>\u2022 Support 2-Port USB3.1 Gen-1 Operating<br>\u2022 Support Simultaneous Operating of Two Stand-alone Data Transfer with 5Gb\/s Data Rate for each Port<br>\u2022 Supports LFPS Detect and Rx Detect<br>\u2022 Support One USB2.0 Port with 480 Mb\/s Data Rate<br>\u2022 Support Hot-Plug Detect for USB2.0<br>\u2022 Maximum USB2.0 Cable Extension Length up to 10m<br>\u2022 Programmable Input Equalization<br>\u2022 Programmable Output Swing and De-emphasis<br>\u2022 Internal MCU and Flash for Firmware Upgrade<br>\u2022 Support External I2C Debug<br>\u2022 1.8V\/3.3V Dual Power Supply<br>\u2022 Packaged in 5mmx5mm QFN40<br><br><strong>3. Applications<\/strong><br><br>\u2022 Smartphone, Tablet and Other Mobile Devices<br>\u2022 Digital TV and Data Storage Equipment<br>\u2022 PC, Notebook, All-in-Ones Computer and Docking<br>\u2022 VR\/AR HMD and USB3.1 Cable Extender\u00a0<\/p>\n\n\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"http:\/\/www.zhuoxunweihong.com\/wp-content\/uploads\/2023\/08\/LT84101D_Product_Brief.pdf\" type=\"application\/pdf\" style=\"width:100%;height:1000px\" aria-label=\"\u5d4c\u5165 LT84101D_Product_Brief\"><\/object><a id=\"wp-block-file--media-d28bbdec-3d0f-49e4-bb52-1c3e7ffcc73b\" href=\"http:\/\/www.zhuoxunweihong.com\/wp-content\/uploads\/2023\/08\/LT84101D_Product_Brief.pdf\">LT84101D_Product_Brief<\/a><a href=\"http:\/\/www.zhuoxunweihong.com\/wp-content\/uploads\/2023\/08\/LT84101D_Product_Brief.pdf\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-d28bbdec-3d0f-49e4-bb52-1c3e7ffcc73b\">\u4e0b\u8f7d<\/a><\/div>\n","protected":false},"excerpt":{"rendered":"<p>1. Description<\/p>\n<p>LT84101D is a deeply-optimized USB re-driver IC that enhances signal quality by performing cable or board trace loss compensation under USB3.1 Gen-1 and USB2.0 specification respectively.<br \/>\nFor USB3.1 Gen-1operation, LT84101D is a dual-port bi-directional 5 Gb\/s SuperSpeed (SS) re-driver device with advanced power management. It is composed of a dual-channel SSRX-SSTX pair. The SSRX implements a multi-level programmable linear equalizer, supporting maximum 25dB loss compensation due to Inter-Symbol Interference (ISI). The SSTX re-drives the received signal with multi-level programmable output swing and up to 6dB de-emphasis. A Low-Frequency Periodic Signal (LFPS) detection, automatic plug and unplug by remote receiver termination sensing and state machine control is also integrated on each port.<br \/>\nFor USB2.0 operating, it provides signal transferring extension over USB cable, which supports high speed, full speed and low speed. The maximum extension length can be up to 10m from the chip to host or device. It eliminates the 5m distance limitation of USB2.0 specification. Internal equalization and pre-emphasis used for extension function can be programmed.<br \/>\nLT84101D internally integrates an 8-bit OCM and flash memory (stacked die) to run program. Online software upgrade is also supported for LT84101D.<br \/>\nThe LT84101D is fabricated in advanced CMOS process and implemented in a small outline 5mmx5mm QFN40 package. This package is RoHS compliant and specified to operate from -40\u00b0C to +85\u00b0C.<\/p>\n<p>2. Features<\/p>\n<p>\u2022 Compatible with USB3.1 Gen-1 and USB2.0 Standard<br \/>\n\u2022 Support 2-Port USB3.1 Gen-1 Operating<br \/>\n\u2022 Support Simultaneous Operating of Two Stand-alone Data Transfer with 5Gb\/s Data Rate for each Port<br \/>\n\u2022 Supports LFPS Detect and Rx Detect<br \/>\n\u2022 Support One USB2.0 Port with 480 Mb\/s Data Rate<br \/>\n\u2022 Support Hot-Plug Detect for USB2.0<br \/>\n\u2022 Maximum USB2.0 Cable Extension Length up to 10m<br \/>\n\u2022 Programmable Input Equalization<br \/>\n\u2022 Programmable Output Swing and De-emphasis<br \/>\n\u2022 Internal MCU and Flash for Firmware Upgrade<br \/>\n\u2022 Support External I2C Debug<br \/>\n\u2022 1.8V\/3.3V Dual Power Supply<br \/>\n\u2022 Packaged in 5mmx5mm QFN40<\/p>\n<p>3. Applications<\/p>\n<p>\u2022 Smartphone, Tablet and Other Mobile Devices<br \/>\n\u2022 Digital TV and Data Storage Equipment<br \/>\n\u2022 PC, Notebook, All-in-Ones Computer and Docking<br \/>\n\u2022 VR\/AR HMD and USB3.1 Cable Extender <\/p>\n","protected":false},"author":1,"featured_media":7802,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10,8,11,31],"tags":[],"class_list":["post-7801","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-parameter-specification","category-device","category-specification","category-lontium"],"featured_image_src":{"landsacpe":["https:\/\/www.zhuoxunweihong.com\/wp-content\/uploads\/2023\/08\/image-37.png",1140,298,false],"list":["https:\/\/www.zhuoxunweihong.com\/wp-content\/uploads\/2023\/08\/image-37.png",463,121,false],"medium":["https:\/\/www.zhuoxunweihong.com\/wp-content\/uploads\/2023\/08\/image-37-300x79.png",300,79,true],"full":["https:\/\/www.zhuoxunweihong.com\/wp-content\/uploads\/2023\/08\/image-37.png",1226,321,false]},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.4 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>LT84101D-\u53cc\u7aef\u53e3\u53cc\u5411 USB3.1 Gen-1 Dual-Port Bi-directional USB3.1 Gen-1 Re-driver - \u6df1\u5733\u5e02\u5353\u8baf\u4f1f\u5b8f\u79d1\u6280\u6709\u9650\u516c\u53f8<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.zhuoxunweihong.com\/?p=7801\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"LT84101D--\u53cc\u7aef\u53e3\u53cc\u5411 USB3.1 Gen-1 Dual-Port Bi-directional USB3.1 Gen-1 Re-driver\" \/>\n<meta property=\"og:description\" content=\"1. Description LT84101D is a deeply-optimized USB re-driver IC that enhances signal quality by performing cable or board trace loss compensation under USB3.1 Gen-1 and USB2.0 specification respectively. For USB3.1 Gen-1operation, LT84101D is a dual-port bi-directional 5 Gb\/s SuperSpeed (SS) re-driver device with advanced power management. It is composed of a dual-channel SSRX-SSTX pair. The SSRX implements a multi-level programmable linear equalizer, supporting maximum 25dB loss compensation due to Inter-Symbol Interference (ISI). The SSTX re-drives the received signal with multi-level programmable output swing and up to 6dB de-emphasis. A Low-Frequency Periodic Signal (LFPS) detection, automatic plug and unplug by remote receiver termination sensing and state machine control is also integrated on each port. For USB2.0 operating, it provides signal transferring extension over USB cable, which supports high speed, full speed and low speed. The maximum extension length can be up to 10m from the chip to host or device. It eliminates the 5m distance limitation of USB2.0 specification. Internal equalization and pre-emphasis used for extension function can be programmed. LT84101D internally integrates an 8-bit OCM and flash memory (stacked die) to run program. Online software upgrade is also supported for LT84101D. The LT84101D is fabricated in advanced CMOS process and implemented in a small outline 5mmx5mm QFN40 package. This package is RoHS compliant and specified to operate from -40\u00b0C to +85\u00b0C. 2. Features \u2022 Compatible with USB3.1 Gen-1 and USB2.0 Standard \u2022 Support 2-Port USB3.1 Gen-1 Operating \u2022 Support Simultaneous Operating of Two Stand-alone Data Transfer with 5Gb\/s Data Rate for each Port \u2022 Supports LFPS Detect and Rx Detect \u2022 Support One USB2.0 Port with 480 Mb\/s Data Rate \u2022 Support Hot-Plug Detect for USB2.0 \u2022 Maximum USB2.0 Cable Extension Length up to 10m \u2022 Programmable Input Equalization \u2022 Programmable Output Swing and De-emphasis \u2022 Internal MCU and Flash for Firmware Upgrade \u2022 Support External I2C Debug \u2022 1.8V\/3.3V Dual Power Supply \u2022 Packaged in 5mmx5mm QFN40 3. Applications \u2022 Smartphone, Tablet and Other Mobile Devices \u2022 Digital TV and Data Storage Equipment \u2022 PC, Notebook, All-in-Ones Computer and Docking \u2022 VR\/AR HMD and USB3.1 Cable Extender\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.zhuoxunweihong.com\/?p=7801\" \/>\n<meta property=\"og:site_name\" content=\"\u6df1\u5733\u5e02\u5353\u8baf\u4f1f\u5b8f\u79d1\u6280\u6709\u9650\u516c\u53f8\" \/>\n<meta property=\"article:published_time\" content=\"2023-08-17T04:54:54+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-08-17T04:55:17+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.zhuoxunweihong.com\/wp-content\/uploads\/2023\/08\/image-37.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1226\" \/>\n\t<meta property=\"og:image:height\" content=\"321\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.zhuoxunweihong.com\\\/?p=7801#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.zhuoxunweihong.com\\\/?p=7801\"},\"author\":{\"name\":\"admin\",\"@id\":\"https:\\\/\\\/www.zhuoxunweihong.com\\\/#\\\/schema\\\/person\\\/27af59cbc9e36429fa9b3099983d72dd\"},\"headline\":\"LT84101D&#8211;\u53cc\u7aef\u53e3\u53cc\u5411 USB3.1 Gen-1 Dual-Port Bi-directional USB3.1 Gen-1 Re-driver\",\"datePublished\":\"2023-08-17T04:54:54+00:00\",\"dateModified\":\"2023-08-17T04:55:17+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.zhuoxunweihong.com\\\/?p=7801\"},\"wordCount\":420,\"publisher\":{\"@id\":\"https:\\\/\\\/www.zhuoxunweihong.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.zhuoxunweihong.com\\\/?p=7801#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.zhuoxunweihong.com\\\/wp-content\\\/uploads\\\/2023\\\/08\\\/image-37.png\",\"articleSection\":[\"\u53c2\u6570\u89c4\u683c\",\"\u5668\u4ef6\u4f7f\u7528\",\"\u89c4\u683c\u4e66\",\"\u9f99\u8fc5\u534a\u5bfc\u4f53\"],\"inLanguage\":\"zh-Hans\",\"copyrightYear\":\"2023\",\"copyrightHolder\":{\"@id\":\"https:\\\/\\\/www.zhuoxunweihong.com\\\/#organization\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.zhuoxunweihong.com\\\/?p=7801\",\"url\":\"https:\\\/\\\/www.zhuoxunweihong.com\\\/?p=7801\",\"name\":\"LT84101D-\u53cc\u7aef\u53e3\u53cc\u5411 USB3.1 Gen-1 Dual-Port Bi-directional USB3.1 Gen-1 Re-driver - 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Description LT84101D is a deeply-optimized USB re-driver IC that enhances signal quality by performing cable or board trace loss compensation under USB3.1 Gen-1 and USB2.0 specification respectively. For USB3.1 Gen-1operation, LT84101D is a dual-port bi-directional 5 Gb\/s SuperSpeed (SS) re-driver device with advanced power management. It is composed of a dual-channel SSRX-SSTX pair. The SSRX implements a multi-level programmable linear equalizer, supporting maximum 25dB loss compensation due to Inter-Symbol Interference (ISI). The SSTX re-drives the received signal with multi-level programmable output swing and up to 6dB de-emphasis. A Low-Frequency Periodic Signal (LFPS) detection, automatic plug and unplug by remote receiver termination sensing and state machine control is also integrated on each port. For USB2.0 operating, it provides signal transferring extension over USB cable, which supports high speed, full speed and low speed. The maximum extension length can be up to 10m from the chip to host or device. It eliminates the 5m distance limitation of USB2.0 specification. Internal equalization and pre-emphasis used for extension function can be programmed. LT84101D internally integrates an 8-bit OCM and flash memory (stacked die) to run program. Online software upgrade is also supported for LT84101D. The LT84101D is fabricated in advanced CMOS process and implemented in a small outline 5mmx5mm QFN40 package. This package is RoHS compliant and specified to operate from -40\u00b0C to +85\u00b0C. 2. Features \u2022 Compatible with USB3.1 Gen-1 and USB2.0 Standard \u2022 Support 2-Port USB3.1 Gen-1 Operating \u2022 Support Simultaneous Operating of Two Stand-alone Data Transfer with 5Gb\/s Data Rate for each Port \u2022 Supports LFPS Detect and Rx Detect \u2022 Support One USB2.0 Port with 480 Mb\/s Data Rate \u2022 Support Hot-Plug Detect for USB2.0 \u2022 Maximum USB2.0 Cable Extension Length up to 10m \u2022 Programmable Input Equalization \u2022 Programmable Output Swing and De-emphasis \u2022 Internal MCU and Flash for Firmware Upgrade \u2022 Support External I2C Debug \u2022 1.8V\/3.3V Dual Power Supply \u2022 Packaged in 5mmx5mm QFN40 3. 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