{"id":349,"date":"2012-06-16T16:09:17","date_gmt":"2012-06-16T07:09:17","guid":{"rendered":"http:\/\/fpga.cool.coocan.jp\/wordpress\/?p=349"},"modified":"2012-06-16T16:09:17","modified_gmt":"2012-06-16T07:09:17","slug":"es9018s%e3%81%ae%e8%a9%95%e4%be%a1%e3%83%9c%e3%83%bc%e3%83%89","status":"publish","type":"post","link":"http:\/\/fpga.cool.coocan.jp\/wordpress\/?p=349","title":{"rendered":"ES9018S\u306e\u8a55\u4fa1\u30dc\u30fc\u30c9"},"content":{"rendered":"

\u305d\u3046\u3044\u3048\u3070\u305a\u3044\u3076\u3093\u524d\u306b\u30b0\u30ed\u30fc\u30d0\u30eb\u96fb\u5b50\u3055\u3093\u304b\u3089ES9018S\u306e\u8a55\u4fa1\u30dc\u30fc\u30c9\u3092\u8abf\u9054\u3057\u3066\u3044\u305f\u306e\u3092\u601d\u3044\u51fa\u3057\u3001UDA(DoP)\u57fa\u677f\u306b\u3064\u306a\u3044\u3067\u97f3\u51fa\u3057\u3092\u3057\u3066\u307f\u308b\u3053\u3068\u306b\u3057\u307e\u3057\u305f\u3002<\/p>\n

ES9018S\u3068\u3044\u3046\u30c1\u30c3\u30d7\u306fSPDIF\/I2S\/DSD\u3092\u5165\u529b\u53ef\u80fd\u306aDAC\u3067\u3059\u304c\u30014\u30d1\u30e9\u7528(\u672c\u6765\u306f8ch\u7528\uff1f)\u306b\u30c1\u30e3\u30f3\u30cd\u30eb\u5f53\u305f\u308a4\u3064\u306eDAC\u304c\u542b\u307e\u308c\u3066\u3044\u3066\u3001\u305d\u308c\u305e\u308c\u306eDAC\u306b\u72ec\u7acb\u306b\u30c7\u30b8\u30bf\u30eb\u5165\u529b\u304c\u30a2\u30b5\u30a4\u30f3\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u30012ch\u7528\u3068\u3057\u3066\u8003\u3048\u308b\u3068\u4e00\u898b\u3054\u3061\u3083\u3054\u3061\u3083\u3057\u3066\u3044\u308b\u3088\u3046\u306b\u611f\u3058\u3089\u308c\u307e\u3059\u3002<\/p>\n

\u30c1\u30c3\u30d7\u3068\u3057\u3066\u306f\u96fb\u6e90\u6295\u5165\u6642\u306b\u30c7\u30d5\u30a9\u30eb\u30c8\u3067S\/PDIF\u5165\u529b\u304c\u9078\u629e\u3055\u308c\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u3066\u3001\u30ec\u30b8\u30b9\u30bf\u3067I2S\/DSD\u5165\u529b\u3068\u3057\u3066\u4f7f\u3046\u3088\u3046\u306b\u8a2d\u5b9a\u3059\u308c\u3070\u3001\u00a0\u300c\u57fa\u672c\u7684\u306b\u300dI2S\u3068DSD\u3092\u81ea\u52d5\u8a8d\u8b58\u3057\u3066\u5207\u308a\u66ff\u3048\u3066\u304f\u308c\u308b\u512a\u308c\u7269\u3001\u3067\u3042\u308b\u3053\u3068\u306f\u7686\u3055\u3093\u3054\u5b58\u77e5\u306e\u3068\u3053\u308d\u3060\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n

\u307e\u305a\u3001\u30d3\u30c3\u30c8\u30af\u30ed\u30c3\u30af\u5c02\u7528 ( I2S\/DSD\u5171 ) \u306e\u5165\u529b\u3067\u3042\u308b”DATA_CLK(60)”\u304c\u3042\u308a\u30018\u3064\u306eDAC\u306f\u3001Lch\u7528\u306bDAC1\/3\/5\/7\u3001Rch\u7528\u306bDAC2\/4\/6\/8\u304c\u30a2\u30b5\u30a4\u30f3\u3055\u308c\u3066\u3044\u3066\u3001DSD\u4fe1\u53f7\u3092\u5165\u308c\u308b\u5834\u5408\u306f\u00a0Lch\u7528\u306e\u5404DAC\u3078\u306f\u305d\u308c\u305e\u308c”DATA1_SD1(59)”, “DATA3_SD3(57)”, “DATA5_SD5(55)”, “DATA7_SD7(53)” \u306e\u5404\u30d4\u30f3\u306bDSDL\u3092, Rch\u7528\u306e\u5404DAC\u3078\u306f\u305d\u308c\u305e\u308c”DATA2_SD2(58)”, “DATA4_SD4(56)”, “DATA6_SD6(54)”, “DATA8(52)” \u306e\u5404\u30d4\u30f3\u306bDSDR\u304c\u5165\u308b\u3088\u3046\u306b\u3057\u3066\u3042\u3052\u307e\u3059\u3002<\/p>\n

I2S\u4fe1\u53f7\u3092\u5165\u308c\u308b\u5834\u5408\u306f\u3001”DATA1_SD1(59)” \u306bLRCK\u3092\u5165\u529b\u3057\u3001SDATA\u3092”DATA2_SD2(58)”,\u00a0 “DATA3_SD3(57)”,\u00a0 “DATA4_SD4(56)”, “DATA5_SD5(55)” \u306b\u5165\u529b\u3059\u308c\u3070\u3001\u30c1\u30c3\u30d7\u304c\u30c1\u30e3\u30cd\u30eb\u3054\u3068\u306bDAC1\u304b\u3089DAC8\u307e\u3067\u632f\u308a\u5206\u3051\u3066\u304f\u308c\u307e\u3059\u3002<\/p>\n

UDA\u57fa\u677f\u3067\u306f\u30d3\u30c3\u30c8\u30af\u30ed\u30c3\u30af\u306fI2S\/DSD\u3067\u5171\u901a\u306a\u306e\u3067\u3001LRCK(DSDL), SDATA(DSDR)\u306e\u5404\u30d4\u30f3\u3092\u3001\u5236\u5fa1\u4fe1\u53f7DSDH(H:DSD\/L:I2S)\u3092\u4f7f\u3063\u3066\u30e2\u30fc\u30c9\u306b\u5fdc\u3058\u3066\u4e0a\u8ff0\u3057\u305f\u3088\u3046\u306b\u5272\u308a\u632f\u3063\u3066\u3084\u308c\u3070\u3001PCM\u3068DSD\u306e\u30b7\u30fc\u30e0\u30ec\u30b9\u306a\u5207\u66ff\u518d\u751f\u304c\u3067\u304d\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n

\"\"<\/p>\n

\u3068\u308a\u3042\u3048\u305a\u624b\u5143\u306bAltera\u306eMAX II \u3068\u3044\u3046CPLD\u57fa\u677f\u304c\u3042\u3063\u305f\u306e\u3067\u3001UDA\u306eI2S\/DSD\u51fa\u529b\u7aef\u5b50\u304b\u3089\u4fe1\u53f7\u3092\u3082\u3089\u3063\u3066\u3001\u30e2\u30fc\u30c9\u6bce\u306b(DSDH\u3092\u898b\u308b\u3053\u3068\u3067)ES9018S\u306b\u632f\u308a\u5206\u3051\u308b\u56de\u8def\u3092\u7d44\u3093\u3067\u97f3\u51fa\u3057\u3092\u3057\u305f\u3068\u3053\u308d\u3001\u30b7\u30fc\u30e0\u30ec\u30b9\u306a\u5207\u66ff\u518d\u751f\u304c\u53ef\u80fd\u3067\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3057\u305f\u3002<\/p>\n

\"\"<\/p>\n

\u3053\u3093\u306a\u591a\u30d4\u30f3\u306e\u5927\u304d\u306aCPLD\u304c\u5fc5\u8981\u306a\u308f\u3051\u3067\u306f\u306a\u304f\u300110\u6570\u672c\u306e\u30d4\u30f3\u304c\u3042\u308c\u3070\u5341\u5206\u3067\u3001SN74LVC157\u3084\u30d0\u30c3\u30d5\u30a1\u306a\u3069\u3092\u4f7f\u3063\u3066\u3082\u7c21\u5358\u306b\u5b9f\u73fe\u3067\u304d\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n

\u306a\u306b\u3088\u308a\u3082\u3001ES9018S\u306e\u30c1\u30c3\u30d7\u7684\u306b\u306fDSD\u3068PCM\u3092\u81ea\u52d5\u3067\u8a8d\u8b58\u3057\u3066\u304f\u308c\u307e\u3059\u306e\u3067\u305d\u306e\u90fd\u5ea6\u30ec\u30b8\u30b9\u30bf\u3078\u30a2\u30af\u30bb\u30b9\u3057\u3066\u5207\u308a\u66ff\u3048\u308b\u5fc5\u8981\u304c\u306a\u304f\u3001\u975e\u5e38\u306b\u5408\u7406\u7684\u3067\u3059\u3002\u00a0<\/p>\n

\u56de\u8def\u56f3\u3088\u308a\u3082\u30b3\u30fc\u30c9\u306e\u65b9\u304c\u308f\u304b\u308a\u3084\u3059\u3044\u3068\u601d\u3044\u307e\u3059\u3002\u4e0b\u306e\u5de6\u8fba\u306fES9018S\u5074\u306e\u30d4\u30f3\u540d\u3001\u53f3\u8fba\u306fUDA\u5074\u306e\u30d4\u30f3\u540d\u3002UDA\u5074\u306f\u3001\u4fe1\u53f7\u540d”DSDL”\u3068”DSDR”\u306fDSD\u30e2\u30fc\u30c9\u6642\u306e\u6a5f\u80fd\u540d\u3067\u3001PCM(I2S)\u30e2\u30fc\u30c9\u6642\u306b\u306f\u540c\u3058\u30d4\u30f3\u304c\u305d\u308c\u305e\u308c LRCK, SDATA\u3068\u3057\u3066\u6a5f\u80fd\u3057\u307e\u3059\u3002<\/p>\n

\u00a0\u00a0 DATA_CLK <= BCLK;
\n\u00a0\u00a0 DATA1_SD1 <= DSDL;
\n\u00a0\u00a0 DATA2_SD2 <= DSDR;
\n\u00a0\u00a0 DATA3_SD3 <= DSDL when DSDH = ‘1’ else DSDR;
\n\u00a0\u00a0 DATA4_SD4 <= DSDR;
\n\u00a0\u00a0 DATA5_SD5 <= DSDL when DSDH = ‘1’ else DSDR;
\n\u00a0\u00a0 DATA6_SD6 <= DSDR when DSDH = ‘1’ else ‘0’;
\n\u00a0\u00a0 DATA7_SD7 <= DSDL when DSDH = ‘1’ else ‘0’;
\n\u00a0\u00a0 DATA8 <= DSDR when DSDH = ‘1’ else ‘0’;<\/p>\n","protected":false},"excerpt":{"rendered":"

\u305d\u3046\u3044\u3048\u3070\u305a\u3044\u3076\u3093\u524d\u306b\u30b0\u30ed\u30fc\u30d0\u30eb\u96fb\u5b50\u3055\u3093\u304b\u3089ES9018S\u306e\u8a55\u4fa1\u30dc\u30fc\u30c9\u3092\u8abf\u9054\u3057\u3066\u3044\u305f\u306e\u3092\u601d\u3044\u51fa\u3057\u3001UDA(DoP)\u57fa\u677f\u306b\u3064\u306a\u3044\u3067\u97f3\u51fa\u3057\u3092\u3057\u3066\u307f\u308b\u3053\u3068\u306b\u3057\u307e\u3057\u305f\u3002 ES9018S\u3068\u3044\u3046\u30c1\u30c3\u30d7\u306fSPDIF\/I2S\/DSD\u3092\u5165 … “ES9018S\u306e\u8a55\u4fa1\u30dc\u30fc\u30c9” \u306e<\/span>\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4,11],"tags":[],"class_list":["post-349","post","type-post","status-publish","format-standard","hentry","category-usb_audio","category-hardware-debug"],"_links":{"self":[{"href":"http:\/\/fpga.cool.coocan.jp\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/349","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/fpga.cool.coocan.jp\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/fpga.cool.coocan.jp\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/fpga.cool.coocan.jp\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/fpga.cool.coocan.jp\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=349"}],"version-history":[{"count":0,"href":"http:\/\/fpga.cool.coocan.jp\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/349\/revisions"}],"wp:attachment":[{"href":"http:\/\/fpga.cool.coocan.jp\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=349"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/fpga.cool.coocan.jp\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=349"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/fpga.cool.coocan.jp\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=349"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}