{"id":730,"date":"2009-06-08T01:41:14","date_gmt":"2009-06-07T16:41:14","guid":{"rendered":"http:\/\/m-syuuta.wp.tcp-ip.or.jp\/?p=730"},"modified":"2014-06-06T15:10:44","modified_gmt":"2014-06-06T06:10:44","slug":"asrcdac%e6%a4%9c%e8%a8%8e%e3%81%9d%e3%81%ae19","status":"publish","type":"post","link":"https:\/\/m-syuuta.wp.tcp-ip.or.jp\/?p=730","title":{"rendered":"ASRC&#038;DAC\u691c\u8a0e\u305d\u306e19"},"content":{"rendered":"<p>\u4eca\u56de\u306f\u3001\u4ee5\u524d\u304b\u3089\u8003\u3048\u3066\u3044\u305fASRC\uff08\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u30ec\u30fc\u30c8\u30b3\u30f3\u30d0\u30fc\u30bf\uff09\u306e\u6295\u5165\u3092\u691c\u8a0e\u3059\u308b\u3002<br \/>\nASRC\u306f\u7c21\u5358\u306b\u8a00\u3046\u3068\u3001CD\u7b49\u304b\u3089\u5165\u529b\u3055\u308c\u305f\u4fe1\u53f7\u306e\u30d3\u30c3\u30c8\u6570\u3001\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u30ec\u30fc\u30c8\u3092\u5909\u63db\u3059\u308b\u3082\u306e\u3002<br \/>\n\u30c0\u30a6\u30f3\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u3082\u3067\u304d\u308b\u304c\u3001\u4eca\u56de\u306f\u9ad8\u97f3\u8cea\u5316\u3092\u72d9\u3063\u3066\u30a2\u30c3\u30d7\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u306b\u4f7f\u7528\u3059\u308b\u3002<br \/>\n\u7c21\u5358\u306a\u306e\u306f\u3001\u9818\u5e03\u3057\u3066\u3082\u3089\u3063\u305fASRC\u57fa\u677f\u3092\u4f7f\u3046\u4e8b\u3060\u304c\u3001\u305d\u3046\u3059\u308b\u3068CD\u2192ASRC\u2192\u30e1\u30e2\u30ea\u30fcDAI\u2192DAC\u3068\u306a\u3063\u3066\u3001\u30b8\u30c3\u30bf\u30fc\u306e\u9762\u304b\u3089\u898b\u308b\u3068\u5c11\u3005\u4e0d\u5229\u3068\u601d\u308f\u308c\u308b\u3002<br \/>\n\u826f\u3055\u305d\u3046\u306a\u306e\u306f\u3001CD\u2192\u30e1\u30e2\u30ea\u30fcDAI\u2192ASRC\u2192DAC\u3060\u304c\u3001\u305d\u3046\u306a\u308b\u3068\u9818\u5e03\u3057\u3066\u3082\u3089\u3063\u305f\u57fa\u677f\u306f\u30aa\u30fc\u30d0\u30fc\u30b9\u30da\u30c3\u30af\u3060\u3002<br \/>\n\u305d\u308c\u306f\u672c\u6765\u306eDEQ2496\u5165\u529b\u7528\u306b\u5358\u72ec\u7a3c\u52d5\u3055\u305b\u308b\u4e8b\u306b\u3057\u3066\u3001DAI\u3068DAC\u9593\u306b\u631f\u3080SRC4192\u3092\u3082\u3046\u4e00\u3064\u7528\u610f\u3059\u308b\u4e8b\u306b\u3057\u3088\u3046\u3002<br \/>\n<a href=\"http:\/\/m-syuuta.wp.tcp-ip.or.jp\/wp-content\/uploads\/2009\/06\/20090606-SRC4192-01.jpg\" target=\"_blank\" onclick=\"window.open(this.href,'imagepopup','status=no,toolbar=no,scrollbars=no,resizable=yes,width=640,height=480');return false;\" class=\"thumbnail\"><img src=\"http:\/\/m-syuuta.wp.tcp-ip.or.jp\/wp-content\/uploads\/2009\/06\/20090606-SRC4192-01.jpg\" width=\"100\" hight=\"75\" alt=\"SRC4192\" title=\"SRC4192\" \/><\/a><br \/>\n\u3055\u3066\u3001SRC4192\u306e\u30c7\u30fc\u30bf\u30b7\u30fc\u30c8\u8abf\u3079\u305f\u3068\u3053\u308d\u3001DAI\u3068DAC\u306e\u9593\u306b\u631f\u3080\u5834\u5408\u306f\u3001SRC4192\u5358\u4f53\u3067\u7279\u306b\u554f\u984c\u7121\u3055\u305d\u3046\u3060\u304c\u3001\u5c11\u3005\u9762\u5012\u306a\u306e\u306f\u51fa\u529b\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u30ec\u30fc\u30c8\u306e\u8a2d\u5b9a\u3067\u3042\u308b\u3002<br \/>\n\u30b6\u30c3\u30af\u30ea\u3068\u8a00\u3046\u3068\u51fa\u529b\u3055\u308c\u308b\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u30ec\u30fc\u30c8\u306f\u3001\u4f9b\u7d66\u3059\u308b\u30de\u30b9\u30bf\u30fc\u30af\u30ed\u30c3\u30af\u306e\u5468\u6ce2\u6570\u3068\u305d\u306e\u5468\u6ce2\u6570\u304c\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u30ec\u30fc\u30c8\u306e\u4f55\u500d\u306a\u306e\u304b\u3092\u8a2d\u5b9a\u3059\u308b\u4e8b\u3067\u6c7a\u307e\u308b\u3002<br \/>\nSRC4192\u304c\u8a2d\u5b9a\u3067\u304d\u308b\u500d\u7387\u306f\u3001128fS\uff08128\u500d\uff09\u3001256fS\uff08256\u500d\uff09\u3001512fS\uff08512\u500d\uff09\u3067\u3042\u308b\u306e\u3067\u3001192KHz\u306e\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u30ec\u30fc\u30c8\u3067\u51fa\u529b\u3057\u305f\u3044\u5834\u5408\u306f\u3001<br \/>\n\u500d\u7387\t\u30de\u30b9\u30bf\u30fc\u30af\u30ed\u30c3\u30af\u5468\u6ce2\u6570<br \/>\n128fS\t24.576MHz<br \/>\n256fS\t49.152MHz<br \/>\n512fS\t98.304MHz<br \/>\n\u306e\u7d44\u307f\u5408\u308f\u305b\u3068\u306a\u308b\u304c\u3001SRC4192\u306b\u5165\u529b\u53ef\u80fd\u306a\u30de\u30b9\u30bf\u30fc\u30af\u30ed\u30c3\u30af\u306e\u4e0a\u9650\u306f50MHz\u307e\u3067\u306a\u306e\u3067\u3001\u5b9f\u969b\u306b\u4f7f\u3048\u308b\u306e\u306f<br \/>\n\u500d\u7387\t\u30de\u30b9\u30bf\u30fc\u30af\u30ed\u30c3\u30af\u5468\u6ce2\u6570<br \/>\n128fS\t24.576MHz<br \/>\n256fS\t49.152MHz<br \/>\n\u306e\u7d44\u307f\u5408\u308f\u305b\u306e\u307f\u3068\u306a\u308b\u3002<br \/>\n\u3061\u306a\u307f\u306bDAC\u306b\u3088\u3063\u3066\u306f\u3001\u518d\u751f\u3067\u304d\u306a\u3044\u500d\u7387\u3068\u30de\u30b9\u30bf\u30fc\u30af\u30ed\u30c3\u30af\u306e\u7d44\u307f\u5408\u308f\u305b\u304c\u3042\u308b\u306e\u3067\u3001SRC4192\u304c\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u7d44\u307f\u5408\u308f\u305b\u3067\u3082\u6ce8\u610f\u304c\u5fc5\u8981\u3002<br \/>\n\u4eca\u56de\u4f7f\u3044\u305f\u3044\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u30ec\u30fc\u30c8\u306f\u300188.2kHz\u3001176.4kHz\u300196kHz\u3001192kHz\u3067\u3042\u308b\u306e\u3067\u3001<br \/>\n128fS\t24.576MHz\t192KHz<br \/>\n256fS\t24.576MHz\t96KHz<br \/>\n128fS\t22.5792MHz\t176.4KHz<br \/>\n256fS\t22.5792MHz\t88.2KHz<br \/>\n\u306e\u3088\u3046\u306b\u3001<br \/>\n22.5792MHz<br \/>\n24.576MHz<br \/>\n\u306e\uff12\u3064\u306e\u30af\u30ed\u30c3\u30af\u3068<br \/>\n128fS<br \/>\n256fS<br \/>\n\u306e\uff12\u3064\u306e\u500d\u7387\u306e\u5207\u66ff\u3067\u5bfe\u5fdc\u3059\u308b\u306e\u304c\u826f\u3055\u305d\u3046\u3060\u3002\uff08PLL\u3092\u4f7f\u3048\u3070\u3082\u3063\u3068\u81ea\u7531\u5ea6\u304c\u4e0a\u304c\u308b\u304c\u3001\u30b8\u30c3\u30bf\u30fc\u306e\u9762\u3067\u306f\u4e0d\u5229\u306b\u306a\u308b\u3068\u601d\u308f\u308c\u308b\u306e\u3067\u4eca\u56de\u306f\u30d1\u30b9\u3002\uff09<br \/>\n\u305f\u3060\u300122.5792MHz\u306824.576MHz\u306e\u6c34\u6676\u767a\u632f\u5668\u306e\u5165\u624b\u306f\u500b\u4eba\u3060\u3068\u7d50\u69cb\u9762\u5012\u3060\u3002<br \/>\n\u305d\u308c\u3068\u3001\u305d\u306e\u9ad8\u5468\u6ce2\u3092\u5207\u308a\u66ff\u3048\u308b\u3068\u3044\u3046\u306e\u3082\u304b\u306a\u308a\u5927\u5909\u3002<br \/>\n\u8272\u3005\u691c\u8a0e\u3057\u3001\u4e09\u7530\u96fb\u6ce2\u88fd\u306e\u6c34\u6676\u767a\u632f\u5668\u3092\u624b\u306b\u5165\u308c\u3066\u3001\u5468\u6ce2\u6570\u306e\u5909\u66f4\u306f\u5dee\u3057\u63db\u3048\u3067\u3068\u3044\u3046\u5834\u5f53\u305f\u308a\u7684\u306a\u5bfe\u5fdc\u3092\u3057\u3088\u3046\u304b\u3068\u601d\u3063\u305f\u77e2\u5148\u3001\u826f\u3044\u4e8b\u3092\u601d\u3044\u3064\u3044\u305f\u3002<br \/>\n\u3053\u3093\u306a\u3068\u3053\u308d\u306b\u826f\u3044\u3082\u306e\u304c\u3042\u308b\u3058\u3083\u306a\u3044\u304b(\u7b11)<br \/>\n<a href=\"http:\/\/m-syuuta.wp.tcp-ip.or.jp\/wp-content\/uploads\/2009\/06\/20090606-SRC4192-02.jpg\" target=\"_blank\" onclick=\"window.open(this.href,'imagepopup','status=no,toolbar=no,scrollbars=no,resizable=yes,width=640,height=480');return false;\" class=\"thumbnail\"><img src=\"http:\/\/m-syuuta.wp.tcp-ip.or.jp\/wp-content\/uploads\/2009\/06\/20090606-SRC4192-02.jpg\" width=\"100\" hight=\"75\" alt=\"\u30e1\u30e2\u30ea\u30fcDAI\u30af\u30ed\u30c3\u30af\u90e8\u30a2\u30c3\u30d7\" title=\"\u30e1\u30e2\u30ea\u30fcDAI\u30af\u30ed\u30c3\u30af\u90e8\u30a2\u30c3\u30d7\" \/><\/a><br \/>\n<a href=\"http:\/\/fpga.cool.coocan.jp\/electrart\/sdram_dai.html\">ElectrArt\u88fd\u306eSDRAM\u30e1\u30e2\u30ea\u30fcDAI<\/a>\u306f\u3001\u53d7\u4fe1\u3057\u305f\u30c7\u30fc\u30bf\u3092\u6b63\u78ba\u306a\u30af\u30ed\u30c3\u30af\u3067\u9001\u308a\u51fa\u3059\u305f\u3081\u306b\u300122.5792MHz\u306824.576MHz\u306e\u6c34\u6676\u767a\u632f\u5668\u3092\u642d\u8f09\u3057\u3066\u304a\u308a\u3001\u5165\u529b\u304cCD\u7b49\u306e44.1KHz\u7cfb\u306e\u5834\u5408\u306f22.5792MHz\u3092\u3001PC\u7b49\u306e48KHz\u7cfb\u306e\u5834\u5408\u306f24.576MHz\u3068\u3044\u3046\u3088\u3046\u306b\u5207\u308a\u66ff\u3048\u3066\u4f7f\u3063\u3066\u3044\u308b\u3002<br \/>\n\u79c1\u306f\u3001CD\u7b49\u306e44.1KHz\u7cfb\u306e\u5834\u5408\u306f88.2kHz\u3001176.4kHz\u306e\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u30ec\u30fc\u30c8\u3092\u3001PC\u7b49\u306e48KHz\u7cfb\u306e\u5834\u5408\u306f96kHz\u3001192kHz\u306e\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u30ec\u30fc\u30c8\u3092\u4f7f\u3044\u305f\u3044\u3068\u601d\u3063\u3066\u3044\u308b\u306e\u3067\u3001\u3082\u308d\u8981\u4ef6\u3068\u5408\u81f4\u3057\u3066\u3044\u308b\u3002<br \/>\n\u3068\u3044\u3046\u3053\u3068\u3067\u3001\u30af\u30ed\u30c3\u30af\u306fSDRAM\u30e1\u30e2\u30ea\u30fcDAI\u304b\u3089\u5f15\u304d\u51fa\u3059\u4e8b\u306b\u6c7a\u5b9a\u3002<br \/>\n\u5ff5\u306e\u305f\u3081\u3001SDRAM\u30e1\u30e2\u30ea\u30fcDAI\u306e\u30af\u30ed\u30c3\u30af\u90e8\u306e\u56de\u8def\u3068\u6c34\u6676\u767a\u632f\u5668\u306e\u4ed5\u69d8\u3092\u78ba\u8a8d\u3057\u305f\u304c\u3001\u305d\u306e\u307e\u307e\u5f15\u304d\u51fa\u3057\u3066\u4f7f\u3063\u3066\u3082\u7279\u306b\u554f\u984c\u7121\u3055\u305d\u3046\u3002\uff08\u86c7\u8db3\u306a\u304c\u3089\u3001\u8f09\u3063\u3066\u3044\u308b\u6c34\u6676\u767a\u632f\u5668\u306f\u51fa\u529b\u5468\u6ce2\u6570\u504f\u5dee\u306f\u8a18\u8f09\u3055\u308c\u3066\u3044\u308b\u3082\u306e\u306e\u3001\u6e29\u5ea6\u504f\u5dee\u306f\u5224\u3089\u306a\u304b\u3063\u305f\u3002\u3053\u3053\u3082\u6700\u7d42\u7684\u306b\u306f\u3069\u3046\u306b\u304b\u3057\u305f\u3044\u3068\u3053\u308d\u3002\uff09<br \/>\n\u3061\u306a\u307f\u306bSDRAM\u30e1\u30e2\u30ea\u30fcDAI\u304c\u3069\u3046\u3084\u3063\u3066\u30af\u30ed\u30c3\u30af\u5207\u66ff\u3092\u3057\u3066\u3044\u308b\u304b\u8208\u5473\u304c\u3042\u3063\u305f\u306e\u3067\u8abf\u3079\u3066\u307f\u305f\u3068\u3053\u308d\u3001\u96fb\u5b50\u7684\u30fb\u7269\u7406\u7684\u306b\u30af\u30ed\u30c3\u30af\u51fa\u529b\u3092\u30b9\u30a4\u30c3\u30c1\u3057\u3066\u3044\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u4e8c\u3064\u306e\u6c34\u6676\u767a\u632f\u5668\u306e\u30af\u30ed\u30c3\u30af\u51fa\u529b\u309222\u03a9\u306e\u62b5\u6297\u3092\u901a\u3057\u3066\u7e4b\u3052\u3066\u304a\u3044\u3066\u3001\u6c34\u6676\u767a\u632f\u5668\u306eST\u7aef\u5b50\u3092\u64cd\u4f5c\u3057\u3066\u3001\u7247\u65b9\u3092\u4f7f\u3063\u3066\u3044\u308b\u3068\u304d\u306f\u7247\u65b9\u3092\u505c\u3081\u3066\u3068\u3044\u3046\u3088\u3046\u306b\u5207\u308a\u66ff\u3048\u3066\u3044\u308b\u3002<br \/>\n\u3053\u306e\u65b9\u5f0f\u306a\u3089\u3001ST\u7aef\u5b50\u4ed8\u304d\u306e\u6c34\u6676\u767a\u632f\u5668\u304c\u624b\u306b\u5165\u308c\u3070\u3001\u30b9\u30a4\u30c3\u30c1\u3067\u5207\u308a\u66ff\u3048\u3089\u308c\u308b\u306a\u3002<br \/>\n\u3055\u3066\u3001\u6b21\u306f\u5b9f\u88c5\u3060\u306a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4eca\u56de\u306f\u3001\u4ee5\u524d\u304b\u3089\u8003\u3048\u3066\u3044\u305fASRC\uff08\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u30ec\u30fc\u30c8\u30b3\u30f3\u30d0\u30fc\u30bf\uff09\u306e\u6295\u5165\u3092\u691c\u8a0e\u3059\u308b\u3002 ASRC\u306f\u7c21\u5358\u306b\u8a00\u3046\u3068\u3001CD\u7b49\u304b\u3089\u5165\u529b\u3055\u308c\u305f\u4fe1\u53f7\u306e\u30d3\u30c3\u30c8\u6570\u3001\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u30ec\u30fc\u30c8\u3092\u5909\u63db\u3059\u308b\u3082\u306e\u3002 \u30c0\u30a6\u30f3\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u3082\u3067\u304d\u308b\u304c\u3001\u4eca\u56de\u306f\u9ad8 &hellip; <a href=\"https:\/\/m-syuuta.wp.tcp-ip.or.jp\/?p=730\">\u7d9a\u304d\u3092\u8aad\u3080 <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[9],"tags":[],"_links":{"self":[{"href":"https:\/\/m-syuuta.wp.tcp-ip.or.jp\/index.php?rest_route=\/wp\/v2\/posts\/730"}],"collection":[{"href":"https:\/\/m-syuuta.wp.tcp-ip.or.jp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/m-syuuta.wp.tcp-ip.or.jp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/m-syuuta.wp.tcp-ip.or.jp\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/m-syuuta.wp.tcp-ip.or.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=730"}],"version-history":[{"count":2,"href":"https:\/\/m-syuuta.wp.tcp-ip.or.jp\/index.php?rest_route=\/wp\/v2\/posts\/730\/revisions"}],"predecessor-version":[{"id":3020,"href":"https:\/\/m-syuuta.wp.tcp-ip.or.jp\/index.php?rest_route=\/wp\/v2\/posts\/730\/revisions\/3020"}],"wp:attachment":[{"href":"https:\/\/m-syuuta.wp.tcp-ip.or.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=730"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m-syuuta.wp.tcp-ip.or.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=730"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m-syuuta.wp.tcp-ip.or.jp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=730"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}