{"id":879,"date":"2024-10-17T08:18:04","date_gmt":"2024-10-16T23:18:04","guid":{"rendered":"https:\/\/rtlearner.com\/?p=879"},"modified":"2025-01-07T08:54:31","modified_gmt":"2025-01-06T23:54:31","slug":"amba-axi-bus","status":"publish","type":"post","link":"https:\/\/rtlearner.com\/en\/amba-axi-bus\/","title":{"rendered":"AMBA - 3 AXI overview"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">AXI(Advanced eXtensible Interface)\ub294 high performance, high frequency system\uc5d0\uc11c \uc0ac\uc6a9\ud558\ub294 bus\ub85c, APB\ub098 AHB\uc640 \ub2ec\ub9ac write channel\uacfc read channel\uc774 \ubd84\ub9ac\ub418\uc5b4 \uc788\ub2e4\ub294 \ud2b9\uc9d5\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n<style>.kb-table-of-content-nav.kb-table-of-content-id879_1adb60-b7 .kb-table-of-content-wrap{padding-top:var(--global-kb-spacing-sm, 1.5rem);padding-right:var(--global-kb-spacing-sm, 1.5rem);padding-bottom:var(--global-kb-spacing-sm, 1.5rem);padding-left:var(--global-kb-spacing-sm, 1.5rem);box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}.kb-table-of-content-nav.kb-table-of-content-id879_1adb60-b7 .kb-table-of-contents-title-wrap{padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.kb-table-of-content-nav.kb-table-of-content-id879_1adb60-b7 .kb-table-of-contents-title{font-weight:regular;font-style:normal;}.kb-table-of-content-nav.kb-table-of-content-id879_1adb60-b7 .kb-table-of-content-wrap .kb-table-of-content-list{font-weight:regular;font-style:normal;margin-top:var(--global-kb-spacing-sm, 1.5rem);margin-right:0px;margin-bottom:0px;margin-left:0px;}@media all and (max-width: 767px){.kb-table-of-content-nav.kb-table-of-content-id879_1adb60-b7 .kb-table-of-contents-title{font-size:var(--global-kb-font-size-md, 1.25rem);}.kb-table-of-content-nav.kb-table-of-content-id879_1adb60-b7 .kb-table-of-content-wrap .kb-table-of-content-list{font-size:var(--global-kb-font-size-sm, 0.9rem);}}<\/style>\n\n<style>.kadence-column879_7a14b3-3c > .kt-inside-inner-col{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}.kadence-column879_7a14b3-3c > .kt-inside-inner-col,.kadence-column879_7a14b3-3c > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column879_7a14b3-3c > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column879_7a14b3-3c > .kt-inside-inner-col{flex-direction:column;}.kadence-column879_7a14b3-3c > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column879_7a14b3-3c > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column879_7a14b3-3c{position:relative;}@media all and (max-width: 1024px){.kadence-column879_7a14b3-3c > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column879_7a14b3-3c > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column879_7a14b3-3c\"><div class=\"kt-inside-inner-col\">\n<p class=\"wp-block-paragraph\"><strong>\uad00\ub828 \uae00<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u2705<a href=\"https:\/\/rtlearner.com\/amba-apb-bus\/\">AMBA \u2013 1 APB overview<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u2705<a href=\"https:\/\/rtlearner.com\/amba-ahb-bus\/\">AMBA \u2013 2 AHB overview<\/a><\/p>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">AXI Architecture<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">AXI bus\ub294 \ub2e4\uc12f\uac1c\uc758 \ub3c5\ub9bd\uc801\uc778 channel\uc744 \uae30\ubc18\uc73c\ub85c \ub3d9\uc791\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Write request, which has signal names beginning with AW<\/li>\n\n\n\n<li>Write data, which has signal names beginning with W<\/li>\n\n\n\n<li>Write response, which has signal names beginning with B<\/li>\n\n\n\n<li>Read request, which has signal names beginning with AR<\/li>\n\n\n\n<li>Read data, which has signal names beginning with R<\/li>\n<\/ul>\n\n\n<style>.kb-image879_dc489c-87.kb-image-is-ratio-size, .kb-image879_dc489c-87 .kb-image-is-ratio-size{max-width:500px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_dc489c-87.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_dc489c-87 .kb-image-is-ratio-size{align-self:unset;}.kb-image879_dc489c-87 figure{max-width:500px;}.kb-image879_dc489c-87 .image-is-svg, .kb-image879_dc489c-87 .image-is-svg img{width:100%;}.kb-image879_dc489c-87 .kb-image-has-overlay:after{opacity:0.3;}.kb-image879_dc489c-87 img.kb-img, .kb-image879_dc489c-87 .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 767px){.kb-image879_dc489c-87.kb-image-is-ratio-size, .kb-image879_dc489c-87 .kb-image-is-ratio-size{max-width:280px;width:100%;}.kb-image879_dc489c-87 figure{max-width:280px;}}<\/style>\n<div class=\"wp-block-kadence-image kb-image879_dc489c-87\"><figure class=\"aligncenter size-full\"><img data-dominant-color=\"eaeaea\" data-has-transparency=\"false\" style=\"--dominant-color: #eaeaea;\" loading=\"lazy\" decoding=\"async\" width=\"818\" height=\"838\" src=\"https:\/\/rtlearner.com\/wp-content\/uploads\/2024\/10\/\uadf8\ub9bc3.jpg\" alt=\"\uae00 \uc124\uba85 \uc774\ubbf8\uc9c0, AXI channel\" class=\"kb-img wp-image-882 not-transparent\" srcset=\"https:\/\/rtlearner.com\/wp-content\/uploads\/2024\/10\/\uadf8\ub9bc3.jpg 818w, https:\/\/rtlearner.com\/wp-content\/uploads\/2024\/10\/\uadf8\ub9bc3-293x300.jpg 293w, https:\/\/rtlearner.com\/wp-content\/uploads\/2024\/10\/\uadf8\ub9bc3-768x787.jpg 768w\" sizes=\"auto, (max-width: 818px) 100vw, 818px\" \/><figcaption>Bus channel<\/figcaption><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\uc704\uc758 \ub2e4\uc12f channel\uc5d0\ub294 \uac01\uac01 data signal\uacfc valid, ready signal\uc774 \uc788\uc73c\uba70 \uc591\ubc29\ud5a5 handshake mechanism\uc744 \uc9c0\uc6d0\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">AXI\uc758 data width\ub294 8, 16, 32, 64, 128, 256, 512, \uadf8\ub9ac\uace0 1024-bit\uae4c\uc9c0 \uc9c0\uc6d0\ud569\ub2c8\ub2e4. Slave\ub294 Master\uac00 \ubcf4\ub0b4\ub294 \ubaa8\ub4e0 write transaction\ub9c8\ub2e4 response\ub97c \ubcf4\ub0b4\uc5b4 \ud574\ub2f9 transaction\uc744 \uc644\ub8cc\ud569\ub2c8\ub2e4. Write channel\uacfc \ub2ec\ub9ac, read channel\uc740 data\uac00 response\uc774\ubbc0\ub85c read response\uac00 \ud544\uc694 \uc5c6\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Multi-master system\uc744 \uc9c0\uc6d0\ud558\uba70, master\uc640 slave\uac00 \ub300\ubd80\ubd84 interconnect\ub97c \ud1b5\ud574 \uc5f0\uacb0\ub429\ub2c8\ub2e4.<\/p>\n\n\n<style>.kb-image879_754f97-31.kb-image-is-ratio-size, .kb-image879_754f97-31 .kb-image-is-ratio-size{max-width:600px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_754f97-31.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_754f97-31 .kb-image-is-ratio-size{align-self:unset;}.kb-image879_754f97-31 figure{max-width:600px;}.kb-image879_754f97-31 .image-is-svg, .kb-image879_754f97-31 .image-is-svg img{width:100%;}.kb-image879_754f97-31 .kb-image-has-overlay:after{opacity:0.3;}.kb-image879_754f97-31 img.kb-img, .kb-image879_754f97-31 .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 767px){.kb-image879_754f97-31.kb-image-is-ratio-size, .kb-image879_754f97-31 .kb-image-is-ratio-size{max-width:280px;width:100%;}.kb-image879_754f97-31 figure{max-width:280px;}}<\/style>\n<div class=\"wp-block-kadence-image kb-image879_754f97-31\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/blog.kakaocdn.net\/dn\/Tbybg\/btsJTeNeTVC\/2bxaHN8cmVvY8wAs2GNtKK\/img.png\" alt=\"Block diagram\" class=\"kb-img\"\/><figcaption>Block diagram<\/figcaption><\/figure><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Signals<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">APB, AHB \ubcf4\ub2e4 \ub354 \uc131\ub2a5\uc774 \uc88b\uc740 bus\uc5ec\uc11c \uadf8\ub7ec\uc9c0, signal\uc774 \uc815\ub9d0 \ub9ce\uc2b5\ub2c8\ub2e4;;;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Write channel signals<\/h3>\n\n\n<style>.kb-image879_0eeecd-e0.kb-image-is-ratio-size, .kb-image879_0eeecd-e0 .kb-image-is-ratio-size{max-width:500px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_0eeecd-e0.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_0eeecd-e0 .kb-image-is-ratio-size{align-self:unset;}.kb-image879_0eeecd-e0 figure{max-width:500px;}.kb-image879_0eeecd-e0 .image-is-svg, .kb-image879_0eeecd-e0 .image-is-svg img{width:100%;}.kb-image879_0eeecd-e0 .kb-image-has-overlay:after{opacity:0.3;}.kb-image879_0eeecd-e0 img.kb-img, .kb-image879_0eeecd-e0 .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 767px){.kb-image879_0eeecd-e0.kb-image-is-ratio-size, .kb-image879_0eeecd-e0 .kb-image-is-ratio-size{max-width:280px;width:100%;}.kb-image879_0eeecd-e0 figure{max-width:280px;}}<\/style>\n<div class=\"wp-block-kadence-image kb-image879_0eeecd-e0\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/blog.kakaocdn.net\/dn\/cyXbZ6\/btsJSLrdHn8\/cAS0vJihH9KxRs5CXKxfp0\/img.png\" alt=\"Write request channel signals\" class=\"kb-img\"\/><figcaption>Write request channel signals<\/figcaption><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Write request channel signals\ub294 master\uac00 write transaction\uc5d0 \ud544\uc694\ud55c address\uc640 control \uc815\ubcf4\ub97c \uc804\ub2ec\ud558\uba70, &#8216;AW&#8217;\ub85c \uc2dc\uc791\ud569\ub2c8\ub2e4.<\/p>\n\n\n<style>.kb-image879_20cea8-17.kb-image-is-ratio-size, .kb-image879_20cea8-17 .kb-image-is-ratio-size{max-width:500px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_20cea8-17.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_20cea8-17 .kb-image-is-ratio-size{align-self:unset;}.kb-image879_20cea8-17 figure{max-width:500px;}.kb-image879_20cea8-17 .image-is-svg, .kb-image879_20cea8-17 .image-is-svg img{width:100%;}.kb-image879_20cea8-17 .kb-image-has-overlay:after{opacity:0.3;}.kb-image879_20cea8-17 img.kb-img, .kb-image879_20cea8-17 .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 767px){.kb-image879_20cea8-17.kb-image-is-ratio-size, .kb-image879_20cea8-17 .kb-image-is-ratio-size{max-width:280px;width:100%;}.kb-image879_20cea8-17 figure{max-width:280px;}}<\/style>\n<div class=\"wp-block-kadence-image kb-image879_20cea8-17\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/blog.kakaocdn.net\/dn\/bqhvVk\/btsJTHawuHU\/cMrbwhIhePn2ZbX6hATnl1\/img.png\" alt=\"Write data channel signals\" class=\"kb-img\"\/><figcaption>Write data channel signals<\/figcaption><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Write data channel signals\ub3c4 master\uac00 \ubcf4\ub0b4\ub294 signal\uc774\uba70 data\uc640 control \uc815\ubcf4\ub97c \ud3ec\ud568\ud558\uace0, &#8216;W&#8217;\ub85c \uc2dc\uc791\ud569\ub2c8\ub2e4.<\/p>\n\n\n<style>.kb-image879_fa3269-75.kb-image-is-ratio-size, .kb-image879_fa3269-75 .kb-image-is-ratio-size{max-width:500px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_fa3269-75.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_fa3269-75 .kb-image-is-ratio-size{align-self:unset;}.kb-image879_fa3269-75 figure{max-width:500px;}.kb-image879_fa3269-75 .image-is-svg, .kb-image879_fa3269-75 .image-is-svg img{width:100%;}.kb-image879_fa3269-75 .kb-image-has-overlay:after{opacity:0.3;}.kb-image879_fa3269-75 img.kb-img, .kb-image879_fa3269-75 .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 767px){.kb-image879_fa3269-75.kb-image-is-ratio-size, .kb-image879_fa3269-75 .kb-image-is-ratio-size{max-width:280px;width:100%;}.kb-image879_fa3269-75 figure{max-width:280px;}}<\/style>\n<div class=\"wp-block-kadence-image kb-image879_fa3269-75\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/blog.kakaocdn.net\/dn\/oS7bz\/btsJSaL1P8o\/5Yv7ZNvtnxeAV9vIkKkXrK\/img.png\" alt=\"Write response channel signals\" class=\"kb-img\"\/><figcaption>Write response channel signals<\/figcaption><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Write response channel signals\ub294 slave\uac00 \ubcf4\ub0b4\ub294 response signal\uc774\uba70, &#8216;B&#8217;\ub85c \uc2dc\uc791\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Read channel signals<\/h3>\n\n\n<style>.kb-image879_ab680e-e0.kb-image-is-ratio-size, .kb-image879_ab680e-e0 .kb-image-is-ratio-size{max-width:500px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_ab680e-e0.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_ab680e-e0 .kb-image-is-ratio-size{align-self:unset;}.kb-image879_ab680e-e0 figure{max-width:500px;}.kb-image879_ab680e-e0 .image-is-svg, .kb-image879_ab680e-e0 .image-is-svg img{width:100%;}.kb-image879_ab680e-e0 .kb-image-has-overlay:after{opacity:0.3;}.kb-image879_ab680e-e0 img.kb-img, .kb-image879_ab680e-e0 .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 767px){.kb-image879_ab680e-e0.kb-image-is-ratio-size, .kb-image879_ab680e-e0 .kb-image-is-ratio-size{max-width:280px;width:100%;}.kb-image879_ab680e-e0 figure{max-width:280px;}}<\/style>\n<div class=\"wp-block-kadence-image kb-image879_ab680e-e0\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/blog.kakaocdn.net\/dn\/dV3Wdl\/btsJSr0OGal\/073AjNhX72C8XFUdTKYVk1\/img.png\" alt=\" Read request channel signals\" class=\"kb-img\"\/><figcaption>Read request channel signals<\/figcaption><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Read request channel signals\ub294 master\uac00 read transaction\uc5d0 \ud544\uc694\ud55c address\uc640 control \uc815\ubcf4\ub97c \uc804\ub2ec\ud558\uba70, &#8216;AR&#8217;\ub85c \uc2dc\uc791\ud569\ub2c8\ub2e4.<\/p>\n\n\n<style>.kb-image879_e92cae-02.kb-image-is-ratio-size, .kb-image879_e92cae-02 .kb-image-is-ratio-size{max-width:500px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_e92cae-02.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_e92cae-02 .kb-image-is-ratio-size{align-self:unset;}.kb-image879_e92cae-02 figure{max-width:500px;}.kb-image879_e92cae-02 .image-is-svg, .kb-image879_e92cae-02 .image-is-svg img{width:100%;}.kb-image879_e92cae-02 .kb-image-has-overlay:after{opacity:0.3;}.kb-image879_e92cae-02 img.kb-img, .kb-image879_e92cae-02 .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 767px){.kb-image879_e92cae-02.kb-image-is-ratio-size, .kb-image879_e92cae-02 .kb-image-is-ratio-size{max-width:280px;width:100%;}.kb-image879_e92cae-02 figure{max-width:280px;}}<\/style>\n<div class=\"wp-block-kadence-image kb-image879_e92cae-02\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/blog.kakaocdn.net\/dn\/dyyN7U\/btsJTB9nebu\/La5HXKXhVUZm3wWStFI4Bk\/img.png\" alt=\"Read data channel signals\" class=\"kb-img\"\/><figcaption>Read data channel signals<\/figcaption><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Read data channel signals\ub294 slave\uac00 \ubcf4\ub0b4\ub294 read data\uc640 response signal\uc774\uba70, &#8216;R&#8217;\ub85c \uc2dc\uc791\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Reset \uc0c1\ud0dc\uc77c \ub54c master\ub294 ARVALID, AWVALID, WVALID\ub97c low\ub85c \uc720\uc9c0\ud558\uace0 slave\ub294 RVALID, BVALID\ub97c low\ub85c \uc720\uc9c0\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">AXI transport<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Clock and Reset<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">AXI signal \uc911 \uc785\ub825 signal\uacfc \ucd9c\ub825 signal \uc0ac\uc774\uc5d0 combinational path\uac00 \uc788\uc73c\uba74 \uc548 \ub429\ub2c8\ub2e4. \uc989, \uc785\ub825 signal\uc774 \ucd9c\ub825 signal\uc5d0 \uc601\ud5a5\uc744 \uc8fc\ub824\uba74 \uc801\uc5b4\ub3c4 1 ACLK\uc758 delay\uac00 \ud544\uc694\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Reset\uc740 clock\uc5d0 asynchronous \ud558\uac8c assert \ud560 \uc218 \uc788\uc9c0\ub9cc deassertion\uc740 clock\uacfc synchronous \ud558\uac8c \uc791\ub3d9\ud574\uc57c \ud569\ub2c8\ub2e4. VALID\ub294 reset\uc774 \ud480\ub9ac\uae30 \uc804\uc5d0\ub294 low\uc5ec\uc57c \ud558\uba70, reset\uc774 \ud480\ub9b0 \ub4a4 VALID high\uac00 \ub420 \uc218 \uc788\ub294 timing\uc740 \uc544\ub798\uc640 \uac19\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n<style>.kb-image879_7b283b-40.kb-image-is-ratio-size, .kb-image879_7b283b-40 .kb-image-is-ratio-size{max-width:450px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_7b283b-40.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_7b283b-40 .kb-image-is-ratio-size{align-self:unset;}.kb-image879_7b283b-40 figure{max-width:450px;}.kb-image879_7b283b-40 .image-is-svg, .kb-image879_7b283b-40 .image-is-svg img{width:100%;}.kb-image879_7b283b-40 .kb-image-has-overlay:after{opacity:0.3;}.kb-image879_7b283b-40 img.kb-img, .kb-image879_7b283b-40 .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 767px){.kb-image879_7b283b-40.kb-image-is-ratio-size, .kb-image879_7b283b-40 .kb-image-is-ratio-size{max-width:280px;width:100%;}.kb-image879_7b283b-40 figure{max-width:280px;}}<\/style>\n<div class=\"wp-block-kadence-image kb-image879_7b283b-40\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/blog.kakaocdn.net\/dn\/drUSjC\/btsJXK6J5DG\/W9kWKU4XFaXitibbglkHm0\/img.png\" alt=\"Exit from reset\" class=\"kb-img\"\/><figcaption>Exit from reset<\/figcaption><\/figure><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Channel handshake<\/h3>\n\n\n<style>.kb-image879_a0fdad-38.kb-image-is-ratio-size, .kb-image879_a0fdad-38 .kb-image-is-ratio-size{max-width:650px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_a0fdad-38.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_a0fdad-38 .kb-image-is-ratio-size{align-self:unset;}.kb-image879_a0fdad-38 figure{max-width:650px;}.kb-image879_a0fdad-38 .image-is-svg, .kb-image879_a0fdad-38 .image-is-svg img{width:100%;}.kb-image879_a0fdad-38 .kb-image-has-overlay:after{opacity:0.3;}.kb-image879_a0fdad-38 img.kb-img, .kb-image879_a0fdad-38 .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 767px){.kb-image879_a0fdad-38.kb-image-is-ratio-size, .kb-image879_a0fdad-38 .kb-image-is-ratio-size{max-width:280px;width:100%;}.kb-image879_a0fdad-38 figure{max-width:280px;}}<\/style>\n<div class=\"wp-block-kadence-image kb-image879_a0fdad-38\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/blog.kakaocdn.net\/dn\/FVauM\/btsJYItz2G0\/LqRg5mo3Tly77KWEO5asg1\/img.png\" alt=\"Handshake\" class=\"kb-img\"\/><figcaption>Handshake<\/figcaption><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Write\/Read transaction \ub458 \ub2e4 VALID\uc640 READY signal\uc774 \ubaa8\ub450 high\uc77c \ub54c \uc774\ub8e8\uc5b4\uc9d1\ub2c8\ub2e4. Data source\uc5d0\uc11c data\uc640 \ud568\uaed8 valid high\ub97c destination\uc73c\ub85c \ubcf4\ub0b4\uba74 destination\uc5d0\uc11c ready high\ub97c \ubcf4\ub0b4\uc57c transfer\uac00 \uc644\ub8cc\ub429\ub2c8\ub2e4. VALID, READY\uc758 assert \uc21c\uc11c\ub294 \uc0c1\uad00\uc5c6\uc2b5\ub2c8\ub2e4. \ud558\uc9c0\ub9cc VALID\uac00 assert \ub418\uae30 \uc804\uc5d0 READY\uac00 \ubbf8\ub9ac assert \ub418\uc5b4 \uc788\ub294 \uac83\uc774 performance \uad00\uc810\uc5d0\uc11c \ub354 \uc88b\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n<style>.kb-image879_f23f8c-c5.kb-image-is-ratio-size, .kb-image879_f23f8c-c5 .kb-image-is-ratio-size{max-width:550px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_f23f8c-c5.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_f23f8c-c5 .kb-image-is-ratio-size{align-self:unset;}.kb-image879_f23f8c-c5 figure{max-width:550px;}.kb-image879_f23f8c-c5 .image-is-svg, .kb-image879_f23f8c-c5 .image-is-svg img{width:100%;}.kb-image879_f23f8c-c5 .kb-image-has-overlay:after{opacity:0.3;}.kb-image879_f23f8c-c5 img.kb-img, .kb-image879_f23f8c-c5 .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 767px){.kb-image879_f23f8c-c5.kb-image-is-ratio-size, .kb-image879_f23f8c-c5 .kb-image-is-ratio-size{max-width:280px;width:100%;}.kb-image879_f23f8c-c5 figure{max-width:280px;}}<\/style>\n<div class=\"wp-block-kadence-image kb-image879_f23f8c-c5\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/blog.kakaocdn.net\/dn\/p9t5S\/btsJTzYk516\/Kzj6OBQS39ImxcR75FX6bK\/img.png\" alt=\"Handshake dependencies\" class=\"kb-img\"\/><figcaption>Handshake dependencies<\/figcaption><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Write transaction<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>AWREADY: AWVALID, WVALID \ubcf4\ub2e4 \uba3c\uc800 assert \ub420 \uc218 \uc788\uc74c<\/li>\n\n\n\n<li>WREADY: AWVALID, WVALID \ubcf4\ub2e4 \uba3c\uc800 assert \ub420 \uc218 \uc788\uc74c<\/li>\n\n\n\n<li>BVALID: WVALID, WREADY \ubcf4\ub2e4 \uba3c\uc800 assert \ub420 \uc218 <strong>\uc5c6\uc74c<\/strong><\/li>\n\n\n\n<li>BREADY: BVALID \ubcf4\ub2e4 \uba3c\uc800 assert \ub420 \uc218 \uc788\uc74c<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Read transaction<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>ARREADY: ARVALID \ubcf4\ub2e4 \uba3c\uc800 assert \ub420 \uc218 \uc788\uc74c<\/li>\n\n\n\n<li>RVALID: ARVALID, ARREAD \ubcf4\ub2e4 \uba3c\uc800 assert \ub420 \uc218 <strong>\uc5c6\uc74c<\/strong><\/li>\n\n\n\n<li>RREADY: RVALID \ubcf4\ub2e4 \uba3c\uc800 assert \ub420 \uc218 \uc788\uc74c<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">AXI4\uc5d0\uc11c\ub294 write transaction\uc77c \ub54c handshake dependency\uc5d0 \ubcc0\ud654\uac00 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n<style>.kb-image879_6a5ba2-1b.kb-image-is-ratio-size, .kb-image879_6a5ba2-1b .kb-image-is-ratio-size{max-width:550px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_6a5ba2-1b.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_6a5ba2-1b .kb-image-is-ratio-size{align-self:unset;}.kb-image879_6a5ba2-1b figure{max-width:550px;}.kb-image879_6a5ba2-1b .image-is-svg, .kb-image879_6a5ba2-1b .image-is-svg img{width:100%;}.kb-image879_6a5ba2-1b .kb-image-has-overlay:after{opacity:0.3;}.kb-image879_6a5ba2-1b img.kb-img, .kb-image879_6a5ba2-1b .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 767px){.kb-image879_6a5ba2-1b.kb-image-is-ratio-size, .kb-image879_6a5ba2-1b .kb-image-is-ratio-size{max-width:280px;width:100%;}.kb-image879_6a5ba2-1b figure{max-width:280px;}}<\/style>\n<div class=\"wp-block-kadence-image kb-image879_6a5ba2-1b\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/blog.kakaocdn.net\/dn\/cWR8jB\/btsJX62fVWz\/xvUwjaoP20n5acBkUYAwJ0\/img.png\" alt=\"AXI4 write transaction handshake dependency\" class=\"kb-img\"\/><figcaption>AXI4 write transaction handshake dependency<\/figcaption><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\uadf8\ub7ec\uba74 \ubcf8\uaca9\uc801\uc73c\ub85c transaction \uc608\uc2dc\ub97c \ubcf4\uba74\uc11c \uc774\ud574\ud574 \ubcfc\uae4c\uc694?<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Read transfer<\/h3>\n\n\n<style>.kb-image879_21ec35-cd.kb-image-is-ratio-size, .kb-image879_21ec35-cd .kb-image-is-ratio-size{max-width:800px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_21ec35-cd.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_21ec35-cd .kb-image-is-ratio-size{align-self:unset;}.kb-image879_21ec35-cd figure{max-width:800px;}.kb-image879_21ec35-cd .image-is-svg, .kb-image879_21ec35-cd .image-is-svg img{width:100%;}.kb-image879_21ec35-cd .kb-image-has-overlay:after{opacity:0.3;}.kb-image879_21ec35-cd img.kb-img, .kb-image879_21ec35-cd .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 767px){.kb-image879_21ec35-cd.kb-image-is-ratio-size, .kb-image879_21ec35-cd .kb-image-is-ratio-size{max-width:280px;width:100%;}.kb-image879_21ec35-cd figure{max-width:280px;}}<\/style>\n<div class=\"wp-block-kadence-image kb-image879_21ec35-cd\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/blog.kakaocdn.net\/dn\/eigTmw\/btsJXQ6X6Rh\/6C1br7BjCzZTVYNuTDfbVK\/img.png\" alt=\"Read burst\" class=\"kb-img\"\/><figcaption>Read burst<\/figcaption><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\uc704 \uc608\uc2dc\ub294 4 read transfer \uc608\uc2dc\uc785\ub2c8\ub2e4. \uccab \ubc88\uc9f8 transfer \uacfc\uc815\ub9cc \uc0b4\ud3b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>T0 ~ T1: Master\uac00 A\ub77c\ub294 address\uc640 address valid signal\uc744 \ubcf4\ub0c4<\/li>\n\n\n\n<li>T1 ~ T2: Slave\uac00 \ud574\ub2f9 \uc8fc\uc18c\uc758 read transaction\uc744 \ud560 \uc900\ube44\uac00 \ub428\uc744 \uc54c\ub9bc (ARREADY)<\/li>\n\n\n\n<li>T3 ~ T5: Master\uac00 read data\ub97c \ubc1b\uc744 \uc900\ube44\uac00 \ub428 (RREADY)<\/li>\n\n\n\n<li>T5 ~ T6: Slave\uac00 read data\uc640 data valid signal\uc744 \ubcf4\ub0c4, RVALID\uc640 RREADY \ubaa8\ub450 high\uc77c \ub54c transaction \ubc1c\uc0dd<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\uc5ec\ub7ec \uc8fc\uc18c\uc758 read transfer\ub97c \ud55c \ubc88\uc5d0 \uc9c4\ud589\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n<style>.kb-image879_17895b-ce.kb-image-is-ratio-size, .kb-image879_17895b-ce .kb-image-is-ratio-size{max-width:650px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_17895b-ce.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_17895b-ce .kb-image-is-ratio-size{align-self:unset;}.kb-image879_17895b-ce figure{max-width:650px;}.kb-image879_17895b-ce .image-is-svg, .kb-image879_17895b-ce .image-is-svg img{width:100%;}.kb-image879_17895b-ce .kb-image-has-overlay:after{opacity:0.3;}.kb-image879_17895b-ce img.kb-img, .kb-image879_17895b-ce .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 767px){.kb-image879_17895b-ce.kb-image-is-ratio-size, .kb-image879_17895b-ce .kb-image-is-ratio-size{max-width:280px;width:100%;}.kb-image879_17895b-ce figure{max-width:280px;}}<\/style>\n<div class=\"wp-block-kadence-image kb-image879_17895b-ce\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/blog.kakaocdn.net\/dn\/SjvaT\/btsJVELxzDb\/H8kICa3SMmZ9x7iPi3g320\/img.png\" alt=\"Overlapping read bursts\n\" class=\"kb-img\"\/><figcaption>Overlapping read bursts<\/figcaption><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">AXI protocol\uc740 Address phase\uc640 Data phase\uac00 \uc911\ucca9\ub418\uc5b4 \uc9c4\ud589\ub418\ub294 AHB protocol\uacfc \ub2ec\ub9ac transaction\uc744 \uc9c4\ud589\ud560 address\ub97c \ubbf8\ub9ac \uc804\uc1a1\ud558\uace0 data\ub97c read \ud569\ub2c8\ub2e4. Slave\ub294 \uac01 address\uc5d0 \ub300\ud55c data transaction\uc774 \ub05d\ub098\uba74 RLAST signal\uc744 \ud1b5\ud574 Master\uc5d0 address transaction \uc885\ub8cc\ub97c \uc54c\ub9bd\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Write transfer<\/h3>\n\n\n<style>.kb-image879_c406ed-5c.kb-image-is-ratio-size, .kb-image879_c406ed-5c .kb-image-is-ratio-size{max-width:800px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_c406ed-5c.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_c406ed-5c .kb-image-is-ratio-size{align-self:unset;}.kb-image879_c406ed-5c figure{max-width:800px;}.kb-image879_c406ed-5c .image-is-svg, .kb-image879_c406ed-5c .image-is-svg img{width:100%;}.kb-image879_c406ed-5c .kb-image-has-overlay:after{opacity:0.3;}.kb-image879_c406ed-5c img.kb-img, .kb-image879_c406ed-5c .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 767px){.kb-image879_c406ed-5c.kb-image-is-ratio-size, .kb-image879_c406ed-5c .kb-image-is-ratio-size{max-width:280px;width:100%;}.kb-image879_c406ed-5c figure{max-width:280px;}}<\/style>\n<div class=\"wp-block-kadence-image kb-image879_c406ed-5c\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/blog.kakaocdn.net\/dn\/clBwqW\/btsJX7G4Z4u\/axYKAQHT7KyvqPblkNTVXK\/img.png\" alt=\"Write burst\" class=\"kb-img\"\/><figcaption>Write burst<\/figcaption><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Write transfer\uc5d0\uc11c\ub294 master\uac00 \uac01 \uc8fc\uc18c\uc5d0 \ub300\ud55c \ub9c8\uc9c0\ub9c9 transaction\uc744 WLAST\ub97c \ud1b5\ud574 slave\uc5d0 \uc54c\ub9bd\ub2c8\ub2e4. Write channel\uc5d0\ub294 response signal\ub3c4 \uc788\uc5b4\uc11c slave\uac00 \ubaa8\ub4e0 data\ub97c \ubc1b\uc740 \ub4a4 BVALID, BREADY\uac00 \ubaa8\ub450 high\uc77c \ub54c transaction\uc5d0 \ub300\ud55c response\ub97c \ub098\ud0c0\ub0b4\uba70 \ud1b5\uc2e0\uc744 \ub9c8\ubb34\ub9ac\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Addressing options<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">AXI protocol\uc740 burst \uae30\ubc18\uc774\uae30 \ub54c\ubb38\uc5d0 \uc774\ub97c control \ud558\ub294 option\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Burst size, AXSIZE[2:0]<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Burst size\ub294 burst transfer \ub0b4\uc5d0\uc11c \uc804\uc1a1\ud560 \ucd5c\ub300 byte\ub97c \uc815\uc758\ud569\ub2c8\ub2e4.<\/p>\n\n\n<style>.kb-image879_f63159-91.kb-image-is-ratio-size, .kb-image879_f63159-91 .kb-image-is-ratio-size{max-width:300px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_f63159-91.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_f63159-91 .kb-image-is-ratio-size{align-self:unset;}.kb-image879_f63159-91 figure{max-width:300px;}.kb-image879_f63159-91 .image-is-svg, .kb-image879_f63159-91 .image-is-svg img{width:100%;}.kb-image879_f63159-91 .kb-image-has-overlay:after{opacity:0.3;}.kb-image879_f63159-91 img.kb-img, .kb-image879_f63159-91 .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 767px){.kb-image879_f63159-91.kb-image-is-ratio-size, .kb-image879_f63159-91 .kb-image-is-ratio-size{max-width:280px;width:100%;}.kb-image879_f63159-91 figure{max-width:280px;}}<\/style>\n<div class=\"wp-block-kadence-image kb-image879_f63159-91\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/blog.kakaocdn.net\/dn\/raBAb\/btsJTnqc1tJ\/66K8MIscFvuTx79KWquQZK\/img.png\" alt=\"Burst size encoding\" class=\"kb-img\"\/><figcaption>Burst size encoding<\/figcaption><\/figure><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Burst length, AXLEN<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Burst length\ub294 \ud574\ub2f9 transfer\uc5d0\uc11c \uc804\ub2ec\ub418\ub294 data \uc218\ub97c \uc815\uc758\ud569\ub2c8\ub2e4. Size x Length\uac00 transaction\uc5d0\uc11c \uc804\uc1a1\ud560 \uc218 \uc788\ub294 \ucd5c\ub300 byte\uc774\uba70, address\uac00 unaligned \ub418\uac70\ub098 write strobe\uac00 \ubaa8\ub450 high\uac00 \uc544\ub2c8\ub77c\uba74 \uc2e4\uc81c \uc804\uc1a1 byte\ub294 \uc904\uc5b4\ub4ed\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc8fc\uc758\ud560 \uc810\uc740 AXI version\uc5d0 \ub530\ub77c AXLEN width\uac00 \ub2ec\ub77c\uc9d1\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">AXI3: AXLEN[3:0]<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">AXI4: AXLEN[7:0]<\/p>\n\n\n<style>.kb-image879_250d36-e1.kb-image-is-ratio-size, .kb-image879_250d36-e1 .kb-image-is-ratio-size{max-width:650px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_250d36-e1.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_250d36-e1 .kb-image-is-ratio-size{align-self:unset;}.kb-image879_250d36-e1 figure{max-width:650px;}.kb-image879_250d36-e1 .image-is-svg, .kb-image879_250d36-e1 .image-is-svg img{width:100%;}.kb-image879_250d36-e1 .kb-image-has-overlay:after{opacity:0.3;}.kb-image879_250d36-e1 img.kb-img, .kb-image879_250d36-e1 .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 767px){.kb-image879_250d36-e1.kb-image-is-ratio-size, .kb-image879_250d36-e1 .kb-image-is-ratio-size{max-width:280px;width:100%;}.kb-image879_250d36-e1 figure{max-width:280px;}}<\/style>\n<div class=\"wp-block-kadence-image kb-image879_250d36-e1\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/blog.kakaocdn.net\/dn\/bt2dKg\/btsJS7ulXbR\/QeC1TccHVYgu5q0AOZizKk\/img.png\" alt=\"AXLEN[7:0]\" class=\"kb-img\"\/><figcaption>AXLEN[7:0]<\/figcaption><\/figure><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Wrapping bursts, Length -&gt; 2, 4, 8, 16<\/li>\n\n\n\n<li>Fixed bursts, Length \u2264 16<\/li>\n\n\n\n<li>4KB address \uc774\uc0c1 transaction \ubd88\uac00<\/li>\n\n\n\n<li>Transaction \uc911\uac04\uc5d0 \uc911\ub2e8 \ubd88\uac00<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\uc544\ub798\ub294 Size = 3&#8217;b10, Length = 8&#8217;h3\uc778 burst \uc608\uc2dc\uc785\ub2c8\ub2e4.<\/p>\n\n\n<style>.kb-image879_c49f6e-a1.kb-image-is-ratio-size, .kb-image879_c49f6e-a1 .kb-image-is-ratio-size{max-width:450px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_c49f6e-a1.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_c49f6e-a1 .kb-image-is-ratio-size{align-self:unset;}.kb-image879_c49f6e-a1 figure{max-width:450px;}.kb-image879_c49f6e-a1 .image-is-svg, .kb-image879_c49f6e-a1 .image-is-svg img{width:100%;}.kb-image879_c49f6e-a1 .kb-image-has-overlay:after{opacity:0.3;}.kb-image879_c49f6e-a1 img.kb-img, .kb-image879_c49f6e-a1 .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 767px){.kb-image879_c49f6e-a1.kb-image-is-ratio-size, .kb-image879_c49f6e-a1 .kb-image-is-ratio-size{max-width:280px;width:100%;}.kb-image879_c49f6e-a1 figure{max-width:280px;}}<\/style>\n<div class=\"wp-block-kadence-image kb-image879_c49f6e-a1\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/blog.kakaocdn.net\/dn\/bcUN28\/btsJXO87c7m\/NkwO1sLRP842MkrxERjktk\/img.png\" alt=\"Burst \uc608\uc2dc\" class=\"kb-img\"\/><figcaption>Burst \uc608\uc2dc<\/figcaption><\/figure><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Burst type, AXBURST[1:0]<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Burst type\ub294 transaction\uc5d0\uc11c address\uac00 \uc99d\uac00\ud558\ub294 \ubc29\ubc95\uc744 \uc815\uc758\ud569\ub2c8\ub2e4.<\/p>\n\n\n<style>.kb-image879_2f3df7-89.kb-image-is-ratio-size, .kb-image879_2f3df7-89 .kb-image-is-ratio-size{max-width:300px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_2f3df7-89.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_2f3df7-89 .kb-image-is-ratio-size{align-self:unset;}.kb-image879_2f3df7-89 figure{max-width:300px;}.kb-image879_2f3df7-89 .image-is-svg, .kb-image879_2f3df7-89 .image-is-svg img{width:100%;}.kb-image879_2f3df7-89 .kb-image-has-overlay:after{opacity:0.3;}.kb-image879_2f3df7-89 img.kb-img, .kb-image879_2f3df7-89 .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 767px){.kb-image879_2f3df7-89.kb-image-is-ratio-size, .kb-image879_2f3df7-89 .kb-image-is-ratio-size{max-width:280px;width:100%;}.kb-image879_2f3df7-89 figure{max-width:280px;}}<\/style>\n<div class=\"wp-block-kadence-image kb-image879_2f3df7-89\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/blog.kakaocdn.net\/dn\/cI1Pdr\/btsJUajlbIF\/pSuKKK7ljx0klTJG2DStsK\/img.png\" alt=\"AxBURST encodings\" class=\"kb-img\"\/><figcaption>AxBURST encodings<\/figcaption><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Fixed burst<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ub3d9\uc77c\ud55c \uc8fc\uc18c\uc5d0 access \ud560 \ub54c \uc0ac\uc6a9 (FIFO)<\/li>\n\n\n\n<li>Byte lane\uc740 \ubaa8\ub450 \uc77c\uc815\ud558\uc9c0\ub9cc, write strobe\ub85c control \uac00\ub2a5<\/li>\n\n\n\n<li>Length of the burst \u2264 16<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Incrementing burst (INCR)<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Address\uac00 \uc774\uc804 transaction address\uc5d0\uc11c \uc77c\uc815\ud558\uac8c \uc99d\uac00, normal sequential memory\ub97c access \ud560 \ub54c \uc0ac\uc6a9<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Wrapping burst (WRAP)<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">INCR\uc640 \ube44\uc2b7\ud558\uc9c0\ub9cc, address\uac00 limit\uc5d0 \ub2e4\ub2e4\ub974\uba74 wrapping \ub429\ub2c8\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Length of the burst: 2, 4, 8, 16<\/li>\n\n\n\n<li>Lowest address: Size * Length<\/li>\n\n\n\n<li>Limit address: (wrap boundary)+ (Size * Length)<\/li>\n<\/ul>\n\n\n<style>.kb-image879_99ff01-f9.kb-image-is-ratio-size, .kb-image879_99ff01-f9 .kb-image-is-ratio-size{max-width:600px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_99ff01-f9.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_99ff01-f9 .kb-image-is-ratio-size{align-self:unset;}.kb-image879_99ff01-f9 figure{max-width:600px;}.kb-image879_99ff01-f9 .image-is-svg, .kb-image879_99ff01-f9 .image-is-svg img{width:100%;}.kb-image879_99ff01-f9 .kb-image-has-overlay:after{opacity:0.3;}.kb-image879_99ff01-f9 img.kb-img, .kb-image879_99ff01-f9 .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 767px){.kb-image879_99ff01-f9.kb-image-is-ratio-size, .kb-image879_99ff01-f9 .kb-image-is-ratio-size{max-width:280px;width:100%;}.kb-image879_99ff01-f9 figure{max-width:280px;}}<\/style>\n<div class=\"wp-block-kadence-image kb-image879_99ff01-f9\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/blog.kakaocdn.net\/dn\/lYTRZ\/btsJXuWdQ7t\/8wYLx5vTuSNOEy9Utjjfu0\/img.png\" alt=\"WRAP \uc8fc\uc18c \uacc4\uc0b0 \ubc29\ubc95\" class=\"kb-img\"\/><figcaption>WRAP \uc8fc\uc18c \uacc4\uc0b0 \ubc29\ubc95<\/figcaption><\/figure><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Atomic access<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">AxLOCK[1:0] signal\uc744 \ud1b5\ud574 Normal, Exclusive, Locked access\ub97c \uc120\ud0dd\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n<style>.kb-image879_43c63b-bd.kb-image-is-ratio-size, .kb-image879_43c63b-bd .kb-image-is-ratio-size{max-width:300px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_43c63b-bd.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_43c63b-bd .kb-image-is-ratio-size{align-self:unset;}.kb-image879_43c63b-bd figure{max-width:300px;}.kb-image879_43c63b-bd .image-is-svg, .kb-image879_43c63b-bd .image-is-svg img{width:100%;}.kb-image879_43c63b-bd .kb-image-has-overlay:after{opacity:0.3;}.kb-image879_43c63b-bd img.kb-img, .kb-image879_43c63b-bd .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 767px){.kb-image879_43c63b-bd.kb-image-is-ratio-size, .kb-image879_43c63b-bd .kb-image-is-ratio-size{max-width:280px;width:100%;}.kb-image879_43c63b-bd figure{max-width:280px;}}<\/style>\n<div class=\"wp-block-kadence-image kb-image879_43c63b-bd\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/blog.kakaocdn.net\/dn\/6tdtU\/btsJU7HGBrd\/UXzrc9h78iOVcIpgIkRYd0\/img.png\" alt=\"Atomic access encoding\" class=\"kb-img\"\/><figcaption>Atomic access encoding<\/figcaption><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Exclusive access<\/strong>\ub294 \ud2b9\uc815 master\uac00 bus\ub97c \ub3c5\uc810\uc801\uc73c\ub85c access\ub97c \uc2dc\ub3c4\ud560 \ub54c \uc0ac\uc6a9\ud569\ub2c8\ub2e4. \ud2b9\uc815 master\uac00 transaction\uc774 \ub05d\ub0a0 \ub54c\uae4c\uc9c0 \ub2e4\ub978 master\uac00 bus\ub97c \uc0ac\uc6a9\ud560 \uc218 \uc5c6\ub3c4\ub85d \ub9c9\ub294 <strong>Locked access<\/strong>\uc640 \ub2ec\ub9ac \ud574\ub2f9 transaction\uc774 \ub05d\ub0a0 \ub54c\uae4c\uc9c0 \ub2e4\ub978 master\uc758 \uac1c\uc785\uc774 \uc788\ub294\uc9c0 \uc5c6\ub294\uc9c0\ub9cc \ud655\uc778\ud569\ub2c8\ub2e4. \ub2e4\ub978 master\uc758 \uac1c\uc785\uc740 slave response\uc778 RRESP[1:0], BRESP[1:0] signal \ud1b5\ud574 \ud655\uc778\ud558\uba70, \uadf8\ub807\uae30 \ub54c\ubb38\uc5d0 Locked access \ub300\ube44 system performance\ub97c \ub5a8\uc5b4\ub728\ub9ac\uc9c0 \uc54a\ub294\ub2e4\ub294 \uc7a5\uc810\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ucc38\uace0\ub85c, Exclusive access \uc911\uc774\uc5b4\ub3c4 \ub2e4\ub978 Master\uac00 read access \ud574\ub3c4 \ub429\ub2c8\ub2e4.<\/p>\n\n\n<style>.kb-image879_7198ef-45.kb-image-is-ratio-size, .kb-image879_7198ef-45 .kb-image-is-ratio-size{max-width:650px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_7198ef-45.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_7198ef-45 .kb-image-is-ratio-size{align-self:unset;}.kb-image879_7198ef-45 figure{max-width:650px;}.kb-image879_7198ef-45 .image-is-svg, .kb-image879_7198ef-45 .image-is-svg img{width:100%;}.kb-image879_7198ef-45 .kb-image-has-overlay:after{opacity:0.3;}.kb-image879_7198ef-45 img.kb-img, .kb-image879_7198ef-45 .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 767px){.kb-image879_7198ef-45.kb-image-is-ratio-size, .kb-image879_7198ef-45 .kb-image-is-ratio-size{max-width:280px;width:100%;}.kb-image879_7198ef-45 figure{max-width:280px;}}<\/style>\n<div class=\"wp-block-kadence-image kb-image879_7198ef-45\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/blog.kakaocdn.net\/dn\/cgtfyL\/btsJVr62mwD\/D4KKCjeeTL7bVh9bOiID71\/img.png\" alt=\"Exclusive access process\" class=\"kb-img\"\/><figcaption>Exclusive access process<\/figcaption><\/figure><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Exclusive write\uc758 size, length\ub294 \uc55e\uc120 read\uc758 \uac83\uacfc \ub3d9\uc77c\ud574\uc57c \ud568.<\/li>\n\n\n\n<li>Exclusive read, write\uc758 address, control signal\uc740 \uac19\uc544\uc57c \ud568.<\/li>\n\n\n\n<li>Exclusive access \uc8fc\uc18c\ub294 align \ub418\uc5b4\uc57c \ud568.<\/li>\n\n\n\n<li>Exclusive access burst data: 1, 2, 4, 8, 16, 32, 64, or 128 bytes<\/li>\n<\/ul>\n\n\n<style>.kb-image879_4f7eb6-0f.kb-image-is-ratio-size, .kb-image879_4f7eb6-0f .kb-image-is-ratio-size{max-width:500px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_4f7eb6-0f.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_4f7eb6-0f .kb-image-is-ratio-size{align-self:unset;}.kb-image879_4f7eb6-0f figure{max-width:500px;}.kb-image879_4f7eb6-0f .image-is-svg, .kb-image879_4f7eb6-0f .image-is-svg img{width:100%;}.kb-image879_4f7eb6-0f .kb-image-has-overlay:after{opacity:0.3;}.kb-image879_4f7eb6-0f img.kb-img, .kb-image879_4f7eb6-0f .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 767px){.kb-image879_4f7eb6-0f.kb-image-is-ratio-size, .kb-image879_4f7eb6-0f .kb-image-is-ratio-size{max-width:280px;width:100%;}.kb-image879_4f7eb6-0f figure{max-width:280px;}}<\/style>\n<div class=\"wp-block-kadence-image kb-image879_4f7eb6-0f\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/blog.kakaocdn.net\/dn\/2iBul\/btsJ3hWyVmK\/haX6ggkeJ5IpAZ5WlqZhNk\/img.png\" alt=\"Locked access\" class=\"kb-img\"\/><figcaption>Locked access<\/figcaption><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\ub2e4\ub978 master\uc758 access\ub97c \uc544\uc608 \uc81c\ud55c\ud558\ub294 locked access\ub294 \uc131\ub2a5\uc744 \uc800\ud558\ud55c\ub2e4\ub294 \ud2b9\uc9d5\uc774 \uc788\uc5b4 AXI4 \uc774\ud6c4\ub85c\ub294 \uc9c0\uc6d0\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Transaction response<\/h2>\n\n\n<style>.kb-image879_065ab9-d4.kb-image-is-ratio-size, .kb-image879_065ab9-d4 .kb-image-is-ratio-size{max-width:300px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_065ab9-d4.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_065ab9-d4 .kb-image-is-ratio-size{align-self:unset;}.kb-image879_065ab9-d4 figure{max-width:300px;}.kb-image879_065ab9-d4 .image-is-svg, .kb-image879_065ab9-d4 .image-is-svg img{width:100%;}.kb-image879_065ab9-d4 .kb-image-has-overlay:after{opacity:0.3;}.kb-image879_065ab9-d4 img.kb-img, .kb-image879_065ab9-d4 .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 767px){.kb-image879_065ab9-d4.kb-image-is-ratio-size, .kb-image879_065ab9-d4 .kb-image-is-ratio-size{max-width:280px;width:100%;}.kb-image879_065ab9-d4 figure{max-width:280px;}}<\/style>\n<div class=\"wp-block-kadence-image kb-image879_065ab9-d4\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/blog.kakaocdn.net\/dn\/bFeZZ7\/btsJTRLfXSG\/j9WJOIp6RTFUIQN7NM7wjK\/img.png\" alt=\"RESP encoding\" class=\"kb-img\"\/><figcaption>RESP encoding<\/figcaption><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>OKAY, normal access success<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">OKAY\ub294 normal transfer success\ub098 exclusive access fail, \ub610\ub294 slave\uac00 exclusive access\ub97c \uc9c0\uc6d0\ud558\uc9c0 \uc54a\uc744 \ub54c \ub098\ud0c0\ub098\ub294 response\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>EXOKAY, exclusive access success<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub9d0 \uadf8\ub300\ub85c exclusive access success\ub97c \uc758\ubbf8\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>SLVERR, slave error<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">SLVERR\ub294 unsuccessful transaction\ub97c \uc758\ubbf8\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>FIFO, buffer overrun or underrun<\/li>\n\n\n\n<li>\uc9c0\uc6d0\ub418\uc9c0 \uc54a\ub294 transfer size \uc811\uadfc \uc2dc\ub3c4<\/li>\n\n\n\n<li>Read-only\uc5d0 write \uc2dc\ub3c4<\/li>\n\n\n\n<li>Slave time-out<\/li>\n\n\n\n<li>Disabled\/powered-down \ub41c \uae30\ub2a5\uc5d0 \uc811\uadfc \uc2dc\ub3c4<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>DECERR, decode error<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc798\ubabb\ub41c address\uc5d0 \uc811\uadfc\ud560 \ub54c \ubc1c\uc0dd\ud569\ub2c8\ub2e4. \uc774\ub7f4 \uacbd\uc6b0, \ubbf8\ub9ac \uc124\uc815\ub41c default slave\uac00 DECERR response\ub97c \ub0b4\ubcf4\ub0c5\ub2c8\ub2e4.<\/p>\n\n\n<style>.kb-image879_1b803b-8b.kb-image-is-ratio-size, .kb-image879_1b803b-8b .kb-image-is-ratio-size{max-width:600px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_1b803b-8b.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_1b803b-8b .kb-image-is-ratio-size{align-self:unset;}.kb-image879_1b803b-8b figure{max-width:600px;}.kb-image879_1b803b-8b .image-is-svg, .kb-image879_1b803b-8b .image-is-svg img{width:100%;}.kb-image879_1b803b-8b .kb-image-has-overlay:after{opacity:0.3;}.kb-image879_1b803b-8b img.kb-img, .kb-image879_1b803b-8b .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 767px){.kb-image879_1b803b-8b.kb-image-is-ratio-size, .kb-image879_1b803b-8b .kb-image-is-ratio-size{max-width:280px;width:100%;}.kb-image879_1b803b-8b figure{max-width:280px;}}<\/style>\n<div class=\"wp-block-kadence-image kb-image879_1b803b-8b\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/blog.kakaocdn.net\/dn\/bvNwbd\/btsJ10V8JhR\/M4G4UJP3U08JOZq5jlHLV0\/img.png\" alt=\"DECERR from default slave\" class=\"kb-img\"\/><figcaption>DECERR from default slave<\/figcaption><\/figure><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Ordering model<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">AXI protocol\uc5d0\uc11c\ub294 transaction ID\ub97c \ud1b5\ud574 multiple outstanding addresses\uc640 out-of-order transaction\uc774 \uac00\ub2a5\ud569\ub2c8\ub2e4. \uac19\uc740 ID\uc778 transaction\uc740 \uc21c\uc11c\ub300\ub85c \uc9c4\ud589\ub418\uc5b4\uc57c \ud558\uc9c0\ub9cc, ID\uac00 \ub2e4\ub978 transaction\uc740 \uc81c\ud55c \uc0ac\ud56d\uc774 \uc5c6\uae30 \ub54c\ubb38\uc5d0 out-of-order transaction\uc774 \uac00\ub2a5\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Transactions from different Managers<\/li>\n\n\n\n<li>Read and write transactions<\/li>\n\n\n\n<li>Transactions with different IDs<\/li>\n\n\n\n<li>Transactions to different Peripheral regions<\/li>\n\n\n\n<li>Transactions to different Memory locations<\/li>\n<\/ul>\n\n\n<style>.kb-image879_86c248-25.kb-image-is-ratio-size, .kb-image879_86c248-25 .kb-image-is-ratio-size{max-width:400px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_86c248-25.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_86c248-25 .kb-image-is-ratio-size{align-self:unset;}.kb-image879_86c248-25 figure{max-width:400px;}.kb-image879_86c248-25 .image-is-svg, .kb-image879_86c248-25 .image-is-svg img{width:100%;}.kb-image879_86c248-25 .kb-image-has-overlay:after{opacity:0.3;}.kb-image879_86c248-25 img.kb-img, .kb-image879_86c248-25 .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 767px){.kb-image879_86c248-25.kb-image-is-ratio-size, .kb-image879_86c248-25 .kb-image-is-ratio-size{max-width:280px;width:100%;}.kb-image879_86c248-25 figure{max-width:280px;}}<\/style>\n<div class=\"wp-block-kadence-image kb-image879_86c248-25\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/blog.kakaocdn.net\/dn\/cmyaqu\/btsJUV1JlO7\/PynRYKpdTkIRLcq3kQkMy1\/img.png\" alt=\"Channel transaction ID\" class=\"kb-img\"\/><figcaption>Channel transaction ID<\/figcaption><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">ID\ub97c \uc0ac\uc6a9\ud558\uba74 \uc774\uc804 transaction\uc774 \ub05d\ub098\uc9c0 \uc54a\uc544\ub3c4 transaction\uc744 \uc0dd\uc131\ud560 \uc218 \uc788\uae30 \ub54c\ubb38\uc5d0 outstanding address\ub97c \ucc98\ub9ac\ud560 \uc218 \uc5c6\uc5c8\ub358 AHB protocol\uacfc \ub2ec\ub9ac, system performance\ub97c \uac1c\uc120\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n<style>.kb-image879_16cd3d-7b.kb-image-is-ratio-size, .kb-image879_16cd3d-7b .kb-image-is-ratio-size{max-width:550px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_16cd3d-7b.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_16cd3d-7b .kb-image-is-ratio-size{align-self:unset;}.kb-image879_16cd3d-7b figure{max-width:550px;}.kb-image879_16cd3d-7b .image-is-svg, .kb-image879_16cd3d-7b .image-is-svg img{width:100%;}.kb-image879_16cd3d-7b .kb-image-has-overlay:after{opacity:0.3;}.kb-image879_16cd3d-7b img.kb-img, .kb-image879_16cd3d-7b .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 767px){.kb-image879_16cd3d-7b.kb-image-is-ratio-size, .kb-image879_16cd3d-7b .kb-image-is-ratio-size{max-width:280px;width:100%;}.kb-image879_16cd3d-7b figure{max-width:280px;}}<\/style>\n<div class=\"wp-block-kadence-image kb-image879_16cd3d-7b\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/blog.kakaocdn.net\/dn\/cYJpEJ\/btsJ58L1QvZ\/kENBoOf24l3rDuLyGH23rk\/img.png\" alt=\"Transfer with ID\" class=\"kb-img\"\/><figcaption>Transfer with ID<\/figcaption><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\uc5ec\uae30\uc11c WID\ub294 AXI3\uc5d0\uc11c\ub9cc \uc9c0\uc6d0\ud55c\ub2e4\uace0 \ud558\ub294\ub370 \uc65c AXI4\uc5d0\uc11c\ub294 \uc9c0\uc6d0\ud558\uc9c0 \uc54a\uc744\uae4c\uc694?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub300\ubd80\ubd84\uc758 slave\ub294 out of order\ub85c \ub370\uc774\ud130\ub97c \ucc98\ub9ac\ud558\ub294 \uac83\uc774 \ubd88\uac00\ub2a5\ud558\uae30 \ub54c\ubb38\uc5d0 write transfer \ud560 \ub54c WID\ub85c out of order \uae30\ub2a5\uc744 \uc0ac\uc6a9\ud558\ub294 \uc77c\uc774 \uac70\uc758 \uc5c6\uc2b5\ub2c8\ub2e4. \uac8c\ub2e4\uac00 master \uc785\uc7a5\uc5d0\uc11c\ub294 slave\uac00 out of order \uae30\ub2a5 \uc9c0\uc6d0 \uc5ec\ubd80\ub97c \uc54c \uc218 \uc788\ub294 \ubc29\ubc95\ub3c4 \uc5c6\uc8e0;;;; \uadf8\ub798\uc11c \uad73\uc774 \uc0ac\uc6a9\ud558\uc9c0 \uc54a\ub294 signal\uc744 \ub0a8\uaca8\ub193\uc744 \ud544\uc694\uac00 \uc5c6\ub294 \uac81\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Additional control<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Cache support<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">AxCACHE signal\uc744 \ud1b5\ud574 memory\uc640 peripheral slave\uc640\uc758 transaction attribute\ub97c control \ud569\ub2c8\ub2e4.<\/p>\n\n\n<style>.kb-image879_3d1c44-10.kb-image-is-ratio-size, .kb-image879_3d1c44-10 .kb-image-is-ratio-size{max-width:300px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_3d1c44-10.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_3d1c44-10 .kb-image-is-ratio-size{align-self:unset;}.kb-image879_3d1c44-10 figure{max-width:300px;}.kb-image879_3d1c44-10 .image-is-svg, .kb-image879_3d1c44-10 .image-is-svg img{width:100%;}.kb-image879_3d1c44-10 .kb-image-has-overlay:after{opacity:0.3;}.kb-image879_3d1c44-10 img.kb-img, .kb-image879_3d1c44-10 .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 767px){.kb-image879_3d1c44-10.kb-image-is-ratio-size, .kb-image879_3d1c44-10 .kb-image-is-ratio-size{max-width:280px;width:100%;}.kb-image879_3d1c44-10 figure{max-width:280px;}}<\/style>\n<div class=\"wp-block-kadence-image kb-image879_3d1c44-10\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/blog.kakaocdn.net\/dn\/oFTG3\/btsJTQT4LgW\/j6nxCXuzsCwB05skkANmQ1\/img.png\" alt=\"Transaction attribute encoding\" class=\"kb-img\"\/><figcaption>Transaction attribute encoding<\/figcaption><\/figure><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>AxCACHE[0], Bufferable (B) bit<\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Transaction\uc774 destination\uc5d0 \ub3c4\ub2ec\ud558\uae30\uae4c\uc9c0 \uba87 clock\uc744 \uc9c0\uc5f0\uc2dc\ud0ac \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uadf8\ub807\uae30 \ub54c\ubb38\uc5d0 \uc77c\ubc18\uc801\uc73c\ub85c write transfer\uc77c \ub54c \uc0ac\uc6a9\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>AxCACHE[1], Cacheable (C) bit<\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Write transfer\uc758 \uacbd\uc6b0, \uc5ec\ub7ec write transfer\ub97c \ubcd1\ud569\ud558\uc5ec transaction\uc774 \uc77c\uc5b4\ub098\uac8c \ub9cc\ub4e4 \uc218 \uc788\uc2b5\ub2c8\ub2e4. Read transfer\uc758 \uacbd\uc6b0, \uc6d0\ud558\ub294 \uc8fc\uc18c\uc758 \uc815\ubcf4\ub97c pre-fetch \ud558\uac70\ub098 single data\ub97c \uc5ec\ub7ec \ubc88 \uc77d\uc5b4\uc62c \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc774 bit\uac00 0\uc774\uba74, allocate transaction\uc774 \ubd88\uac00\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>AxCACHE[2], Read-allocate (RA) bit<\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Read allocation transfer\ub97c \uc0ac\uc6a9\ud558\uc9c0\ub9cc, \ud544\uc218\ub294 \uc544\ub2d9\ub2c8\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>AxCACHE[3], Write-allocate (WA) bit<\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Write allocation transfer\ub97c \uc0ac\uc6a9\ud558\uc9c0\ub9cc, \ud544\uc218\ub294 \uc544\ub2d9\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">AxCACHE\uc5d0 \ub530\ub77c Write-back\/Write-through, Allocate \uae30\ub2a5\uc744 \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n<style>.kb-image879_95f2aa-6c.kb-image-is-ratio-size, .kb-image879_95f2aa-6c .kb-image-is-ratio-size{max-width:450px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_95f2aa-6c.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_95f2aa-6c .kb-image-is-ratio-size{align-self:unset;}.kb-image879_95f2aa-6c figure{max-width:450px;}.kb-image879_95f2aa-6c .image-is-svg, .kb-image879_95f2aa-6c .image-is-svg img{width:100%;}.kb-image879_95f2aa-6c .kb-image-has-overlay:after{opacity:0.3;}.kb-image879_95f2aa-6c img.kb-img, .kb-image879_95f2aa-6c .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 767px){.kb-image879_95f2aa-6c.kb-image-is-ratio-size, .kb-image879_95f2aa-6c .kb-image-is-ratio-size{max-width:280px;width:100%;}.kb-image879_95f2aa-6c figure{max-width:280px;}}<\/style>\n<div class=\"wp-block-kadence-image kb-image879_95f2aa-6c\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/blog.kakaocdn.net\/dn\/nPuSA\/btsJ4X51Qzr\/NkrXog5aVu74wvyb6Vtai1\/img.png\" alt=\"AxCACHE encoding\" class=\"kb-img\"\/><figcaption>AxCACHE encoding<\/figcaption><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\uc704\uc758 \uae30\ub2a5\uc740 cache\uc758 \uc8fc\uc694 \uc131\ub2a5\uc778 cache hit\/miss \uc0c1\ud669\uc5d0 \ub530\ub77c \ubd84\ub958\ub429\ub2c8\ub2e4.<\/p>\n\n\n<style>.kb-image879_407eae-cd.kb-image-is-ratio-size, .kb-image879_407eae-cd .kb-image-is-ratio-size{max-width:650px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_407eae-cd.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_407eae-cd .kb-image-is-ratio-size{align-self:unset;}.kb-image879_407eae-cd figure{max-width:650px;}.kb-image879_407eae-cd .image-is-svg, .kb-image879_407eae-cd .image-is-svg img{width:100%;}.kb-image879_407eae-cd .kb-image-has-overlay:after{opacity:0.3;}.kb-image879_407eae-cd img.kb-img, .kb-image879_407eae-cd .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 767px){.kb-image879_407eae-cd.kb-image-is-ratio-size, .kb-image879_407eae-cd .kb-image-is-ratio-size{max-width:280px;width:100%;}.kb-image879_407eae-cd figure{max-width:280px;}}<\/style>\n<div class=\"wp-block-kadence-image kb-image879_407eae-cd\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/blog.kakaocdn.net\/dn\/btceCq\/btsJ4pvcn6q\/1Ezwe3DaSSVhExUxpdWQKk\/img.png\" alt=\"Write-back\/Write-through, Allocate\" class=\"kb-img\"\/><figcaption>Write-back\/Write-through, Allocate<\/figcaption><\/figure><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Write-Back: cache write hit \uc0c1\ud669\uc5d0\uc11c cache\uc758 data\ub9cc \uc218\uc815\ud569\ub2c8\ub2e4. Main memory\uc5d0\ub294 miss\uac00 \ubc1c\uc0dd\ud574\uc11c data\uac00 \uad50\uccb4\ub420 \ub54c \ubc18\uc601\ud569\ub2c8\ub2e4. \uc774\ub7f4 \uacbd\uc6b0, data consistency issue\uac00 \ubc1c\uc0dd\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n\n\n\n<li>Write-Through: cache write hit \uc0c1\ud669\uc5d0\uc11c cache, main memory \ubaa8\ub450 data\ub97c \uc218\uc815\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li>Allocate: cache write miss \uc0c1\ud669\uc5d0\uc11c main memory\uc758 data\ub97c cache\uc5d0 \ubcf5\uc0ac\ud558\uace0 \uc218\uc815\uc774 \uc774\ub8e8\uc5b4\uc9d1\ub2c8\ub2e4.<\/li>\n\n\n\n<li>no-Allocate: cache write miss \uc0c1\ud669\uc5d0\uc11c main memory\uc758 data\ub97c cache\uc5d0 \ubcf5\uc0ac\ud558\uc9c0 \uc54a\uace0 main memory\uc758 data\ub97c \uc9c1\uc811 \uc218\uc815\ud569\ub2c8\ub2e4. \ud574\ub2f9 data\ub97c \ub2e4\uc2dc \uc4f0\uc9c0 \uc54a\uc744 \uac83 \uac19\uc744 \ub54c\uc758 \ubc29\uc2dd\uc785\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Protection unit support<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ubcf5\uc7a1\ud55c system\uc5d0\uc11c illegal transaction\uc744 \ubc29\uc9c0\ud558\uae30 \uc704\ud574 AxPROT signal\uc744 \ud1b5\ud574 protected access\ub97c \uc9c0\uc6d0\ud569\ub2c8\ub2e4.<\/p>\n\n\n<style>.kb-image879_cb6cda-dc.kb-image-is-ratio-size, .kb-image879_cb6cda-dc .kb-image-is-ratio-size{max-width:300px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_cb6cda-dc.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_cb6cda-dc .kb-image-is-ratio-size{align-self:unset;}.kb-image879_cb6cda-dc figure{max-width:300px;}.kb-image879_cb6cda-dc .image-is-svg, .kb-image879_cb6cda-dc .image-is-svg img{width:100%;}.kb-image879_cb6cda-dc .kb-image-has-overlay:after{opacity:0.3;}.kb-image879_cb6cda-dc img.kb-img, .kb-image879_cb6cda-dc .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 767px){.kb-image879_cb6cda-dc.kb-image-is-ratio-size, .kb-image879_cb6cda-dc .kb-image-is-ratio-size{max-width:280px;width:100%;}.kb-image879_cb6cda-dc figure{max-width:280px;}}<\/style>\n<div class=\"wp-block-kadence-image kb-image879_cb6cda-dc\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/blog.kakaocdn.net\/dn\/lSr4y\/btsJV9j6W8G\/GbNndrUazfX7eE0c8leBiK\/img.png\" alt=\"Protection encoding\" class=\"kb-img\"\/><figcaption>Protection encoding<\/figcaption><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Privileged access: \uc2dc\uc2a4\ud15c \ub0b4\uc5d0\uc11c \ub354 \ub192\uc740 \uad8c\ud55c\uc744 \uac00\uc9d0, \uc774\ub97c \ud1b5\ud574 \ud2b9\uc815 \uc791\uc5c5\uc774 \ub354 \ub9ce\uc740 \uc790\uc6d0\uc5d0 access \uac00\ub2a5<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Secure access: \ubbfc\uac10\ud55c data\uc5d0 \uc548\uc804\ud558\uac8c access<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Low-power Interface<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Low-power Interface\ub294 \ud2b9\uc815 peripheral\uc758 \uc800\uc804\ub825 \ubaa8\ub4dc\uc5d0 \ub4e4\uc5b4\uac00\uac8c \ub9cc\ub4e4\uc5b4 energy consumption\uc744 \ucd5c\uc801\ud654\ud560 \uc218 \uc788\ub294 optional extension\uc785\ub2c8\ub2e4.<\/p>\n\n\n<style>.kb-image879_b34332-7b.kb-image-is-ratio-size, .kb-image879_b34332-7b .kb-image-is-ratio-size{max-width:650px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_b34332-7b.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_b34332-7b .kb-image-is-ratio-size{align-self:unset;}.kb-image879_b34332-7b figure{max-width:650px;}.kb-image879_b34332-7b .image-is-svg, .kb-image879_b34332-7b .image-is-svg img{width:100%;}.kb-image879_b34332-7b .kb-image-has-overlay:after{opacity:0.3;}.kb-image879_b34332-7b img.kb-img, .kb-image879_b34332-7b .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 767px){.kb-image879_b34332-7b.kb-image-is-ratio-size, .kb-image879_b34332-7b .kb-image-is-ratio-size{max-width:280px;width:100%;}.kb-image879_b34332-7b figure{max-width:280px;}}<\/style>\n<div class=\"wp-block-kadence-image kb-image879_b34332-7b\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/blog.kakaocdn.net\/dn\/bWcQxw\/btsJ10CdVkK\/aMf6w3tpY7xKKkTKkK4jZ1\/img.png\" alt=\"Low-power Interface \ubc29\uc2dd\" class=\"kb-img\"\/><figcaption>Low-power Interface \ubc29\uc2dd<\/figcaption><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Signals<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>CACTIVE: Peripheral\uc5d0 clock\uc774 \ud544\uc694\ud568\uc744 \ub098\ud0c0\ub0c4<\/li>\n\n\n\n<li>CSYSREQ: Peripheral\uc774 \uc800\uc804\ub825 \ubaa8\ub4dc\uc5d0 \ub4e4\uc5b4\uac00\ub3c4\ub85d clock controller\uac00 \ud558\ub294 \uc694\uccad<\/li>\n\n\n\n<li>CSYSACK: Peripheral\uc774 \uc800\uc804\ub825 \ubaa8\ub4dc\uc5d0 \ub4e4\uc5b4\uac14\uc74c\uc744 \uc54c\ub9ac\ub294 signal<\/li>\n<\/ul>\n\n\n<style>.kb-image879_4b2fb3-46.kb-image-is-ratio-size, .kb-image879_4b2fb3-46 .kb-image-is-ratio-size{max-width:650px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_4b2fb3-46.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_4b2fb3-46 .kb-image-is-ratio-size{align-self:unset;}.kb-image879_4b2fb3-46 figure{max-width:650px;}.kb-image879_4b2fb3-46 .image-is-svg, .kb-image879_4b2fb3-46 .image-is-svg img{width:100%;}.kb-image879_4b2fb3-46 .kb-image-has-overlay:after{opacity:0.3;}.kb-image879_4b2fb3-46 img.kb-img, .kb-image879_4b2fb3-46 .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 767px){.kb-image879_4b2fb3-46.kb-image-is-ratio-size, .kb-image879_4b2fb3-46 .kb-image-is-ratio-size{max-width:280px;width:100%;}.kb-image879_4b2fb3-46 figure{max-width:280px;}}<\/style>\n<div class=\"wp-block-kadence-image kb-image879_4b2fb3-46\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/blog.kakaocdn.net\/dn\/c5bOIS\/btsJ2HWcyU8\/Vk864MVqZZF5oPmKckTRL0\/img.png\" alt=\"CSYSREQ and CSYSACK handshake\" class=\"kb-img\"\/><figcaption>CSYSREQ and CSYSACK handshake<\/figcaption><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Peripheral\uc740 low-power mode\uc5d0 \ub4e4\uc5b4\uac00\ub77c\ub294 clock controller\uc758 \uc694\uccad\uc744 \uc218\ub77d\ud560 \uc218\ub3c4 \uc788\uace0 \uac70\ubd80\ud560 \uc218\ub3c4 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n<style>.kb-image879_120baf-c4.kb-image-is-ratio-size, .kb-image879_120baf-c4 .kb-image-is-ratio-size{max-width:650px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_120baf-c4.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_120baf-c4 .kb-image-is-ratio-size{align-self:unset;}.kb-image879_120baf-c4 figure{max-width:650px;}.kb-image879_120baf-c4 .image-is-svg, .kb-image879_120baf-c4 .image-is-svg img{width:100%;}.kb-image879_120baf-c4 .kb-image-has-overlay:after{opacity:0.3;}.kb-image879_120baf-c4 img.kb-img, .kb-image879_120baf-c4 .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 767px){.kb-image879_120baf-c4.kb-image-is-ratio-size, .kb-image879_120baf-c4 .kb-image-is-ratio-size{max-width:280px;width:100%;}.kb-image879_120baf-c4 figure{max-width:280px;}}<\/style>\n<div class=\"wp-block-kadence-image kb-image879_120baf-c4\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/blog.kakaocdn.net\/dn\/cx245v\/btsJ2GXARdU\/pYMUkCecORGPXd5eAicn91\/img.png\" alt=\"Acceptance of a low-power request\" class=\"kb-img\"\/><figcaption>Acceptance of a low-power request<\/figcaption><\/figure><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>T1: \uc800\uc804\ub825 \ubaa8\ub4dc \uc694\uccad<\/li>\n\n\n\n<li>T2: \uc800\uc804\ub825 \ubaa8\ub4dc \uc218\ub77d<\/li>\n\n\n\n<li>T3: \uc800\uc804\ub825 \uc0c1\ud0dc \uc9c4\uc785 \uc644\ub8cc<\/li>\n<\/ul>\n\n\n<style>.kb-image879_80df14-ba.kb-image-is-ratio-size, .kb-image879_80df14-ba .kb-image-is-ratio-size{max-width:650px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_80df14-ba.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_80df14-ba .kb-image-is-ratio-size{align-self:unset;}.kb-image879_80df14-ba figure{max-width:650px;}.kb-image879_80df14-ba .image-is-svg, .kb-image879_80df14-ba .image-is-svg img{width:100%;}.kb-image879_80df14-ba .kb-image-has-overlay:after{opacity:0.3;}.kb-image879_80df14-ba img.kb-img, .kb-image879_80df14-ba .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 767px){.kb-image879_80df14-ba.kb-image-is-ratio-size, .kb-image879_80df14-ba .kb-image-is-ratio-size{max-width:280px;width:100%;}.kb-image879_80df14-ba figure{max-width:280px;}}<\/style>\n<div class=\"wp-block-kadence-image kb-image879_80df14-ba\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/blog.kakaocdn.net\/dn\/21YZ7\/btsJ11nF0uN\/Rpala43T0YGbn0A4kvyikk\/img.png\" alt=\" Denial of a low-power request\" class=\"kb-img\"\/><figcaption>Denial of a low-power request<\/figcaption><\/figure><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>T1: \uc800\uc804\ub825 \ubaa8\ub4dc \uc694\uccad<\/li>\n\n\n\n<li>T2: \uc800\uc804\ub825 \ubaa8\ub4dc \uc694\uccad \uac70\ubd80 (CACTIVE HIGH \uc720\uc9c0)<\/li>\n\n\n\n<li>T3: Handshake \uc885\ub8cc \uc694\uccad<\/li>\n\n\n\n<li>T4: Handshake \uc885\ub8cc \uc218\ub77d<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\uc800\uc804\ub825 \ubaa8\ub4dc \uc885\ub8cc\ub294 peripheral, clock controller \ub458 \ub2e4 \uc694\uccad\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n<style>.kb-image879_1bfd8b-cd.kb-image-is-ratio-size, .kb-image879_1bfd8b-cd .kb-image-is-ratio-size{max-width:650px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_1bfd8b-cd.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_1bfd8b-cd .kb-image-is-ratio-size{align-self:unset;}.kb-image879_1bfd8b-cd figure{max-width:650px;}.kb-image879_1bfd8b-cd .image-is-svg, .kb-image879_1bfd8b-cd .image-is-svg img{width:100%;}.kb-image879_1bfd8b-cd .kb-image-has-overlay:after{opacity:0.3;}.kb-image879_1bfd8b-cd img.kb-img, .kb-image879_1bfd8b-cd .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 767px){.kb-image879_1bfd8b-cd.kb-image-is-ratio-size, .kb-image879_1bfd8b-cd .kb-image-is-ratio-size{max-width:280px;width:100%;}.kb-image879_1bfd8b-cd figure{max-width:280px;}}<\/style>\n<div class=\"wp-block-kadence-image kb-image879_1bfd8b-cd\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/blog.kakaocdn.net\/dn\/vHlWW\/btsJ2cbqnae\/1e30ruXjWrQx0uuONPXSQk\/img.png\" alt=\"System clock controller initiated exit\" class=\"kb-img\"\/><figcaption>System clock controller initiated exit<\/figcaption><\/figure><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>T1: Clock controller\uac00 exit \uc694\uccad<\/li>\n\n\n\n<li>T2: Peripheral\uc774 exit accept<\/li>\n\n\n\n<li>T3: Peripheral\uc774 exit \uc644\ub8cc \uc54c\ub9bc<\/li>\n<\/ul>\n\n\n<style>.kb-image879_58161b-23.kb-image-is-ratio-size, .kb-image879_58161b-23 .kb-image-is-ratio-size{max-width:650px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_58161b-23.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image879_58161b-23 .kb-image-is-ratio-size{align-self:unset;}.kb-image879_58161b-23 figure{max-width:650px;}.kb-image879_58161b-23 .image-is-svg, .kb-image879_58161b-23 .image-is-svg img{width:100%;}.kb-image879_58161b-23 .kb-image-has-overlay:after{opacity:0.3;}.kb-image879_58161b-23 img.kb-img, .kb-image879_58161b-23 .kb-img img{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}@media all and (max-width: 767px){.kb-image879_58161b-23.kb-image-is-ratio-size, .kb-image879_58161b-23 .kb-image-is-ratio-size{max-width:280px;width:100%;}.kb-image879_58161b-23 figure{max-width:280px;}}<\/style>\n<div class=\"wp-block-kadence-image kb-image879_58161b-23\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/blog.kakaocdn.net\/dn\/bPE9uW\/btsJ3gqkAvF\/3dDekePSZ8sy3kTkw8Z5JK\/img.png\" alt=\"Peripheral initiated exit\" class=\"kb-img\"\/><figcaption>Peripheral initiated exit<\/figcaption><\/figure><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>T1: Peripheral\uc774 exit \uc694\uccad<\/li>\n\n\n\n<li>T2: Clock controller\uac00 exit accept<\/li>\n\n\n\n<li>T3: Peripheral\uc774 exit \uc644\ub8cc \uc54c\ub9bc<\/li>\n<\/ul>\n\n\n<style>.kadence-column879_dd1985-53 > .kt-inside-inner-col{box-shadow:0px 0px 14px 0px rgba(0, 0, 0, 0.2);}.kadence-column879_dd1985-53 > .kt-inside-inner-col,.kadence-column879_dd1985-53 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column879_dd1985-53 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column879_dd1985-53 > .kt-inside-inner-col{flex-direction:column;}.kadence-column879_dd1985-53 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column879_dd1985-53 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column879_dd1985-53{position:relative;}@media all and (max-width: 1024px){.kadence-column879_dd1985-53 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column879_dd1985-53 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column879_dd1985-53\"><div class=\"kt-inside-inner-col\">\n<p class=\"wp-block-paragraph\"><strong>\uad00\ub828 \uae00<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u2705<a href=\"https:\/\/rtlearner.com\/amba-apb-bus\/\">AMBA \u2013 1 APB overview<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u2705<a href=\"https:\/\/rtlearner.com\/amba-ahb-bus\/\">AMBA \u2013 2 AHB overview<\/a><\/p>\n<\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\ucc38\uace0: <a href=\"https:\/\/developer.arm.com\/documentation\/ihi0022\/latest\/\" target=\"_blank\" rel=\"noopener\">ARM\u00ae AMBA 5 AXI Protocol Specification<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>AXI (Advanced eXtensible Interface) is a bus used in high performance, high frequency systems\u2026<\/p>","protected":false},"author":1,"featured_media":882,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kadence_starter_templates_imported_post":false,"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[2],"tags":[24,25],"class_list":["post-879","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-rtl-engineer","tag-amba","tag-bus"],"_links":{"self":[{"href":"https:\/\/rtlearner.com\/en\/wp-json\/wp\/v2\/posts\/879","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rtlearner.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rtlearner.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rtlearner.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/rtlearner.com\/en\/wp-json\/wp\/v2\/comments?post=879"}],"version-history":[{"count":23,"href":"https:\/\/rtlearner.com\/en\/wp-json\/wp\/v2\/posts\/879\/revisions"}],"predecessor-version":[{"id":938,"href":"https:\/\/rtlearner.com\/en\/wp-json\/wp\/v2\/posts\/879\/revisions\/938"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/rtlearner.com\/en\/wp-json\/wp\/v2\/media\/882"}],"wp:attachment":[{"href":"https:\/\/rtlearner.com\/en\/wp-json\/wp\/v2\/media?parent=879"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rtlearner.com\/en\/wp-json\/wp\/v2\/categories?post=879"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rtlearner.com\/en\/wp-json\/wp\/v2\/tags?post=879"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}<!-- 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