{"id":4997,"date":"2026-01-16T11:00:00","date_gmt":"2026-01-16T02:00:00","guid":{"rendered":"https:\/\/www.ramxeed.com\/jp\/?post_type=column&p=4997"},"modified":"2026-01-13T11:53:37","modified_gmt":"2026-01-13T02:53:37","slug":"qspi-high-speed-data-transfer-basics","status":"publish","type":"column","link":"https:\/\/www.ramxeed.com\/jp\/tech-column\/qspi-high-speed-data-transfer-basics\/","title":{"rendered":"\u3010\u9ad8\u901f\u5316\u306e\u9375\u3011 QSPI\u304c\u5b9f\u73fe\u3059\u308b\u30a2\u30d7\u30ea\u306e\u30c7\u30fc\u30bf\u8ee2\u9001\u901f\u5ea6\u3068\u6027\u80fd\u5411\u4e0a\u306e\u30e1\u30ab\u30cb\u30ba\u30e0\u3092\u5fb9\u5e95\u89e3\u8aac"},"content":{"rendered":"\n

QSPI\uff08Quad SPI\uff09\u3092\u6d3b\u7528\u3057\u305f\u30c7\u30fc\u30bf\u8ee2\u9001\u306e\u9ad8\u901f\u5316\u624b\u6cd5\u306b\u3064\u3044\u3066\u3001\u30d7\u30ed\u30c8\u30b3\u30eb\u69cb\u6210\u3001XIP\u306e\u6d3b\u7528\u3001DMA\u9023\u643a\u3001\u56de\u8def\u8a2d\u8a08\u307e\u3067\u3092\u7db2\u7f85\u7684\u306b\u89e3\u8aac\u3057\u307e\u3059\u3002\u7d44\u8fbc\u307f\u958b\u767a\u306b\u304a\u3051\u308b\u6027\u80fd\u5411\u4e0a\u306e\u5b9f\u8df5\u7684\u30a2\u30d7\u30ed\u30fc\u30c1\u304c\u7406\u89e3\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n

QSPI\u306e\u57fa\u672c\u3068\u9ad8\u901f\u5316\u306e\u7406\u8ad6<\/strong><\/h2>\n\n\n\n

QSPI\u306f\u3001SPI\u3092\u62e1\u5f35\u3057\u305f\u30b7\u30ea\u30a2\u30eb\u901a\u4fe1\u65b9\u5f0f\u3067\u3001\u6700\u59274\u672c\u306e\u30c7\u30fc\u30bf\u7dda\u3092\u7528\u3044\u3066\u9ad8\u901f\u306a\u30c7\u30fc\u30bf\u8ee2\u9001\u3092\u53ef\u80fd\u306b\u3059\u308b\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3067\u3059\u3002\u5916\u90e8\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u3068\u30de\u30a4\u30b3\u30f3\u9593\u306e\u901a\u4fe1\u306b\u7528\u3044\u3089\u308c\u3001\u8d77\u52d5\u6642\u9593\u306e\u77ed\u7e2e\u3084\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u51e6\u7406\u306e\u5fdc\u7b54\u6027\u5411\u4e0a\u306b\u5927\u304d\u304f\u5bc4\u4e0e\u3057\u307e\u3059\u3002\u8fd1\u5e74\u306e\u7d44\u8fbc\u307f\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001\u30b3\u30fc\u30c9\u5b9f\u884c\u3084\u30c7\u30fc\u30bf\u8aad\u307f\u51fa\u3057\u306e\u9ad8\u901f\u5316\u304c\u6c42\u3081\u3089\u308c\u3066\u304a\u308a\u3001QSPI\u306f\u305d\u306e\u8981\u4ef6\u3092\u6e80\u305f\u3059\u624b\u6bb5\u3068\u3057\u3066\u6ce8\u76ee\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n

QSPI\u3068\u306f\uff1aSPI\u3068\u306e\u6839\u672c\u7684\u306a\u9055\u3044<\/strong><\/h3>\n\n\n\n

QSPI\u306f\u3001\u5f93\u6765\u306eSPI\u3092\u62e1\u5f35\u3057\u305f\u901a\u4fe1\u65b9\u5f0f\u3067\u3042\u308a\u3001\u6700\u59274\u672c\u306e\u30c7\u30fc\u30bf\u7dda\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001SPI\u306e4\u500d\u306e\u7406\u8ad6\u8ee2\u9001\u901f\u5ea6\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002QSPI\u306e\u901a\u4fe1\u306f\u3001\u30b3\u30de\u30f3\u30c9\u3001\u30a2\u30c9\u30ec\u30b9\u3001\u30c7\u30fc\u30bf\u306e3\u3064\u306e\u30d5\u30a7\u30fc\u30ba\u306b\u5206\u304b\u308c\u3066\u304a\u308a\u3001\u305d\u308c\u305e\u308c\u306e\u30d5\u30a7\u30fc\u30ba\u3067\u4f7f\u7528\u3059\u308b\u30e9\u30a4\u30f3\u6570\u3092\u500b\u5225\u306b\u6307\u5b9a\u3067\u304d\u308b\u67d4\u8edf\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u69cb\u9020\u306b\u3088\u308a\u3001\u4f7f\u7528\u3059\u308b\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u3084\u30de\u30a4\u30b3\u30f3\u306e\u4ed5\u69d8\u306b\u5fdc\u3058\u3066\u6700\u9069\u306a\u901a\u4fe1\u30e2\u30fc\u30c9\u3092\u9078\u629e\u3067\u304d\u3001\u8ee2\u9001\u52b9\u7387\u3092\u9ad8\u3081\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002\u7d44\u8fbc\u307f\u6a5f\u5668\u3067\u306f\u3001\u30b3\u30fc\u30c9\u306e\u76f4\u63a5\u5b9f\u884c\u3084\u5927\u5bb9\u91cf\u30c7\u30fc\u30bf\u306e\u9ad8\u901f\u8aad\u307f\u51fa\u3057\u306a\u3069\u3001\u3055\u307e\u3056\u307e\u306a\u7528\u9014\u3067QSPI\u306e\u5229\u70b9\u304c\u6d3b\u304b\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n

QSPI\u306eI\/O\u69cb\u6210\u3068\u9ad8\u901f\u8ee2\u9001\u306e\u4ed5\u7d44\u307f<\/strong><\/h3>\n\n\n\n

QSPI\u306f\u3001\u8907\u6570\u306e\u30c7\u30fc\u30bf\u7dda\u3092\u4f7f\u3063\u30661\u30af\u30ed\u30c3\u30af\u3042\u305f\u308a\u306e\u8ee2\u9001\u30d3\u30c3\u30c8\u6570\u3092\u5897\u3084\u3059\u3053\u3068\u3067\u3001\u5f93\u6765\u306eSPI\u3088\u308a\u3082\u9ad8\u3044\u901a\u4fe1\u901f\u5ea6\u3092\u5b9f\u73fe\u3057\u3066\u3044\u307e\u3059\u3002\u4e00\u822c\u7684\u306b\u3001SPI\u3067\u306f1\u672c\u306e\u30c7\u30fc\u30bf\u7dda\u3092\u4f7f\u7528\u3057\u30661\u30d3\u30c3\u30c8\u305a\u3064\u8ee2\u9001\u3057\u307e\u3059\u304c\u3001QSPI\u3067\u306f\u6700\u59274\u672c\u306e\u30c7\u30fc\u30bf\u7dda\u3092\u4f7f\u3063\u3066\u30011\u30af\u30ed\u30c3\u30af\u3042\u305f\u308a4\u30d3\u30c3\u30c8\u3092\u540c\u6642\u306b\u9001\u53d7\u4fe1\u3067\u304d\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u30b3\u30de\u30f3\u30c9\u3001\u30a2\u30c9\u30ec\u30b9\u3001\u30c7\u30fc\u30bf\u306e\u5404\u901a\u4fe1\u30d5\u30a7\u30fc\u30ba\u306b\u304a\u3044\u3066\u3001\u8ee2\u9001\u65b9\u5f0f\u3084\u30d3\u30c3\u30c8\u5e45\u3092\u500b\u5225\u306b\u8a2d\u5b9a\u3067\u304d\u308b\u70b9\u3082QSPI\u306e\u7279\u5fb4\u3067\u3059\u3002\u3053\u306e\u67d4\u8edf\u6027\u306b\u3088\u308a\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u7279\u6027\u3084\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u8981\u4ef6\u306b\u5408\u308f\u305b\u3066\u6700\u9069\u306a\u8ee2\u9001\u69cb\u6210\u304c\u53ef\u80fd\u3068\u306a\u308a\u3001\u9ad8\u901f\u5316\u3068\u52b9\u7387\u5316\u3092\u4e21\u7acb\u3055\u305b\u305f\u8a2d\u8a08\u304c\u5b9f\u73fe\u3057\u307e\u3059\u3002<\/p>\n\n\n\n

\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u7a2e\u985e\uff08\u30af\u30a2\u30c3\u30c9\uff0fQIO\uff0fQPI\uff09<\/strong><\/h3>\n\n\n\n

QSPI\u306b\u306f\u3001\u30af\u30a2\u30c3\u30c9\uff08Quad\uff09\u3001QIO\uff08Quad I\/O\uff09\u3001QPI\uff08Quad Peripheral Interface\uff09\u3068\u3044\u30463\u3064\u306e\u4e3b\u8981\u306a\u901a\u4fe1\u30e2\u30fc\u30c9\u304c\u3042\u308a\u307e\u3059\u3002\u30af\u30a2\u30c3\u30c9\u30e2\u30fc\u30c9\u3067\u306f\u3001\u30b3\u30de\u30f3\u30c9\u3068\u30a2\u30c9\u30ec\u30b9\u306f1\u672c\u306e\u30e9\u30a4\u30f3\u3067\u9001\u4fe1\u3057\u3001\u30c7\u30fc\u30bf\u30924\u672c\u306e\u30c7\u30fc\u30bf\u7dda\u3067\u8ee2\u9001\u3057\u307e\u3059\u3002QIO\u30e2\u30fc\u30c9\u3067\u306f\u3001\u30a2\u30c9\u30ec\u30b9\u30d5\u30a7\u30fc\u30ba\u30824\u7dda\u8ee2\u9001\u3068\u306a\u308a\u3001QPI\u3067\u306f\u30b3\u30de\u30f3\u30c9\u3001\u30a2\u30c9\u30ec\u30b9\u3001\u30c7\u30fc\u30bf\u306e\u3059\u3079\u3066\u306e\u30d5\u30a7\u30fc\u30ba\u304c\u30af\u30a2\u30c3\u30c9\u5316\u3055\u308c\u307e\u3059\u3002QPI\u306f\u6700\u3082\u9ad8\u901f\u306a\u30e2\u30fc\u30c9\u3067\u3059\u304c\u3001\u5bfe\u5fdc\u3059\u308b\u30de\u30a4\u30b3\u30f3\u304a\u3088\u3073\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u304c\u5fc5\u8981\u3067\u3059\u3002\u5404\u30e2\u30fc\u30c9\u306e\u7279\u6027\u3068\u4e92\u63db\u6027\u3092\u6b63\u3057\u304f\u7406\u89e3\u3057\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u8981\u4ef6\u3084\u901a\u4fe1\u901f\u5ea6\u3001\u5b9f\u88c5\u306e\u5236\u7d04\u306b\u5fdc\u3058\u3066\u9069\u5207\u306a\u901a\u4fe1\u65b9\u5f0f\u3092\u9078\u5b9a\u3059\u308b\u3053\u3068\u304c\u3001QSPI\u3092\u6d3b\u7528\u3059\u308b\u4e0a\u3067\u306e\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n

\u9ad8\u901f\u5316\u306e\u5b9f\u88c5\u30c6\u30af\u30cb\u30c3\u30af<\/strong><\/h2>\n\n\n\n

QSPI\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u6700\u5927\u9650\u306b\u5f15\u304d\u51fa\u3059\u305f\u3081\u306b\u306f\u3001\u5358\u306b\u30af\u30a2\u30c3\u30c9\u8ee2\u9001\u3092\u4f7f\u3046\u3060\u3051\u3067\u306a\u304f\u3001\u8ee2\u9001\u30bf\u30a4\u30df\u30f3\u30b0\u306e\u6700\u9069\u5316\u3084\u3001\u30e1\u30e2\u30ea\u30de\u30c3\u30d7\u30c9\u30a2\u30af\u30bb\u30b9\u3001DMA\u9023\u643a\u306a\u3069\u8907\u6570\u306e\u624b\u6cd5\u3092\u9069\u5207\u306b\u7d44\u307f\u5408\u308f\u305b\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306e\u7279\u6027\u3084\u30b7\u30b9\u30c6\u30e0\u69cb\u6210\u306b\u3088\u3063\u3066\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u306f\u7570\u306a\u308b\u305f\u3081\u3001\u500b\u5225\u306e\u5b9f\u88c5\u6761\u4ef6\u306b\u5fdc\u3058\u305f\u9ad8\u901f\u5316\u6226\u7565\u304c\u6c42\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n

\u30c0\u30df\u30fc\u30b5\u30a4\u30af\u30eb\u3068\u30a6\u30a7\u30a4\u30c8\u30b5\u30a4\u30af\u30eb\u306e\u6700\u9069\u5316<\/strong><\/h3>\n\n\n\n

QSPI\u30d5\u30e9\u30c3\u30b7\u30e5\u304b\u3089\u306e\u30c7\u30fc\u30bf\u8aad\u307f\u51fa\u3057\u306b\u304a\u3044\u3066\u3001\u30c0\u30df\u30fc\u30b5\u30a4\u30af\u30eb\u306f\u30c7\u30fc\u30bf\u51fa\u529b\u306e\u5b89\u5b9a\u3092\u4fdd\u8a3c\u3059\u308b\u305f\u3081\u306b\u5fc5\u8981\u3067\u3059\u304c\u3001\u9577\u3059\u304e\u308b\u8a2d\u5b9a\u306f\u7121\u99c4\u306a\u5f85\u6a5f\u6642\u9593\u3092\u751f\u307f\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u4f4e\u4e0b\u3055\u305b\u307e\u3059\u3002\u9006\u306b\u77ed\u3059\u304e\u308c\u3070\u30c7\u30fc\u30bf\u5316\u3051\u306e\u539f\u56e0\u3068\u306a\u308b\u305f\u3081\u3001\u30d5\u30e9\u30c3\u30b7\u30e5\u4ed5\u69d8\u306b\u57fa\u3065\u3044\u305f\u8abf\u6574\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002QSPI\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u306e\u8a2d\u5b9a\u3067\u3001\u30af\u30ed\u30c3\u30af\u5468\u6ce2\u6570\u3084I\/O\u30e2\u30fc\u30c9\u306b\u5fdc\u3058\u305f\u30c0\u30df\u30fc\u30b5\u30a4\u30af\u30eb\u6570\u3092\u8abf\u6574\u3057\u3001\u5b9f\u6a5f\u691c\u8a3c\u3092\u901a\u3058\u3066\u6700\u9069\u306a\u5024\u3092\u898b\u3064\u3051\u308b\u3053\u3068\u304c\u9ad8\u901f\u5316\u306e\u7b2c\u4e00\u6b69\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n

XIP: Execute In Place\u306b\u3088\u308b\u30a2\u30af\u30bb\u30b9\u9ad8\u901f\u5316<\/strong><\/h3>\n\n\n\n

XIP\uff08Execute In Place\uff09\u306f\u3001QSPI\u30d5\u30e9\u30c3\u30b7\u30e5\u306b\u683c\u7d0d\u3055\u308c\u305f\u30b3\u30fc\u30c9\u3092RAM\u306b\u5c55\u958b\u305b\u305a\u3001\u5916\u90e8\u30d5\u30e9\u30c3\u30b7\u30e5\u4e0a\u304b\u3089\u76f4\u63a5\u5b9f\u884c\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001RAM\u306e\u4f7f\u7528\u91cf\u3092\u6291\u3048\u3064\u3064\u3001\u8d77\u52d5\u6642\u9593\u3092\u77ed\u7e2e\u3067\u304d\u307e\u3059\u3002QSPI\u304c\u30e1\u30e2\u30ea\u30de\u30c3\u30d7\u30c9\u30e2\u30fc\u30c9\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u5834\u5408\u3001CPU\u306f\u5916\u90e8\u30d5\u30e9\u30c3\u30b7\u30e5\u3092\u901a\u5e38\u306e\u30e1\u30e2\u30ea\u306e\u3088\u3046\u306b\u6271\u3048\u308b\u305f\u3081\u3001XIP\u304c\u6709\u52b9\u306b\u6a5f\u80fd\u3057\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u8a2d\u8a08\u3084\u5272\u308a\u8fbc\u307f\u3068\u306e\u6574\u5408\u6027\u3092\u8003\u616e\u3057\u306a\u3044\u3068\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3084\u5b89\u5b9a\u6027\u306b\u5f71\u97ff\u304c\u51fa\u308b\u305f\u3081\u3001\u5b9f\u88c5\u4e0a\u306e\u5236\u7d04\u306b\u3082\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n

DMA\u8ee2\u9001\u3068\u30ad\u30e3\u30c3\u30b7\u30e5\u8a2d\u8a08\u306e\u5de5\u592b<\/strong><\/h3>\n\n\n\n

QSPI\u3092\u5229\u7528\u3057\u305f\u5927\u5bb9\u91cf\u30c7\u30fc\u30bf\u306e\u9023\u7d9a\u8ee2\u9001\u306b\u306fDMA\u3068\u306e\u4f75\u7528\u304c\u52b9\u679c\u7684\u3067\u3059\u3002DMA\u3092\u6d3b\u7528\u3059\u308c\u3070\u3001CPU\u3092\u4ecb\u3055\u305a\u306b\u30d5\u30e9\u30c3\u30b7\u30e5\u304b\u3089RAM\u3078\u30c7\u30fc\u30bf\u3092\u9ad8\u901f\u3067\u8ee2\u9001\u3067\u304d\u3001CPU\u306f\u5225\u306e\u51e6\u7406\u306b\u96c6\u4e2d\u3067\u304d\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u8aad\u307f\u51fa\u3057\u5148\u306e\u30e1\u30e2\u30ea\u9818\u57df\u3092\u30ad\u30e3\u30c3\u30b7\u30e5\u5236\u5fa1\u3068\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u30c7\u30fc\u30bf\u518d\u5229\u7528\u6642\u306e\u30a2\u30af\u30bb\u30b9\u6642\u9593\u3092\u77ed\u7e2e\u3057\u3001\u5168\u4f53\u306e\u51e6\u7406\u52b9\u7387\u3092\u9ad8\u3081\u3089\u308c\u307e\u3059\u3002DMA\u8ee2\u9001\u3068\u30ad\u30e3\u30c3\u30b7\u30e5\u8a2d\u8a08\u306e\u6700\u9069\u306a\u30d0\u30e9\u30f3\u30b9\u3092\u53d6\u308b\u3053\u3068\u304c\u3001QSPI\u9ad8\u901f\u5316\u8a2d\u8a08\u306e\u5b9f\u88c5\u6210\u529f\u306e\u9375\u3092\u63e1\u308a\u307e\u3059\u3002<\/p>\n\n\n\n

\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u5225\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6539\u5584<\/strong><\/h2>\n\n\n\n

QSPI\u306e\u6027\u80fd\u3092\u6700\u5927\u9650\u306b\u6d3b\u304b\u3059\u305f\u3081\u306b\u306f\u3001\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u56fa\u6709\u306e\u5236\u7d04\u3084\u6700\u9069\u5316\u30dd\u30a4\u30f3\u30c8\u3092\u7406\u89e3\u3057\u305f\u4e0a\u3067\u3001\u8a2d\u8a08\u3068\u5b9f\u88c5\u3092\u884c\u3046\u3053\u3068\u304c\u5fc5\u8981\u3067\u3059\u3002\u7279\u306b\u30de\u30a4\u30b3\u30f3\u3084FPGA\u3054\u3068\u306bQSPI\u5236\u5fa1\u306e\u65b9\u6cd5\u3084\u5468\u8fba\u56de\u8def\u306e\u5236\u7d04\u304c\u7570\u306a\u308b\u305f\u3081\u3001\u30c7\u30d0\u30a4\u30b9\u4ed5\u69d8\u306b\u5fdc\u3058\u305f\u500b\u5225\u5bfe\u5fdc\u304c\u6c42\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n

\u30de\u30a4\u30b3\u30f3\u306b\u304a\u3051\u308bQSPI\u30af\u30ed\u30c3\u30af\u8a2d\u5b9a\u6700\u9069\u5316\u306e\u8003\u3048\u65b9<\/strong><\/h3>\n\n\n\n

\u4e00\u822c\u7684\u306a\u30de\u30a4\u30b3\u30f3\u306b\u304a\u3051\u308bQSPI\u5236\u5fa1\u3067\u306f\u3001\u30af\u30ed\u30c3\u30af\u8a2d\u5b9a\u304c\u901a\u4fe1\u6027\u80fd\u306b\u5927\u304d\u304f\u5f71\u97ff\u3057\u307e\u3059\u3002QSPI\u306e\u30af\u30ed\u30c3\u30af\u5468\u6ce2\u6570\u306f\u3001\u4f7f\u7528\u3059\u308b\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306e\u4ed5\u69d8\u3068\u30da\u30ea\u30d5\u30a7\u30e9\u30eb\u5074\u306e\u5236\u9650\u3092\u8003\u616e\u3057\u3066\u6c7a\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u30d5\u30e9\u30c3\u30b7\u30e5\u5074\u306e\u6700\u5927\u52d5\u4f5c\u5468\u6ce2\u6570\u3092\u8d85\u3048\u308b\u3068\u30c7\u30fc\u30bf\u5316\u3051\u306e\u539f\u56e0\u3068\u306a\u308a\u3001\u9006\u306b\u4f4e\u3059\u304e\u308b\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u51fa\u307e\u305b\u3093\u3002\u307e\u305f\u3001\u30af\u30ed\u30c3\u30af\u6574\u5408\u6027\u3092\u4fdd\u3064\u305f\u3081\u306b\u306fPLL\u69cb\u6210\u3084\u30d0\u30b9\u5206\u5468\u6bd4\u306e\u8a2d\u5b9a\u3082\u91cd\u8981\u3067\u3059\u3002\u8a2d\u8a08\u6bb5\u968e\u3067\u5341\u5206\u306a\u691c\u8a3c\u3092\u884c\u3044\u3001\u30b7\u30b9\u30c6\u30e0\u5168\u4f53\u306b\u5bfe\u3057\u3066\u5b89\u5b9a\u3057\u305f\u30bf\u30a4\u30df\u30f3\u30b0\u8a2d\u8a08\u3092\u65bd\u3059\u3053\u3068\u304c\u3001\u9ad8\u901f\u304b\u3064\u4fe1\u983c\u6027\u306e\u3042\u308b\u901a\u4fe1\u3092\u5b9f\u73fe\u3059\u308b\u9375\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n

QSPI\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9IP\u3068\u56de\u8def\u8a2d\u8a08\u4e0a\u306e\u30dd\u30a4\u30f3\u30c8<\/strong><\/h3>\n\n\n\n

FPGA\u3084\u30ab\u30b9\u30bf\u30e0SoC\u3067QSPI\u3092\u5b9f\u88c5\u3059\u308b\u5834\u5408\u3001\u4f7f\u7528\u3059\u308bQSPI\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9IP\u306e\u6a5f\u80fd\u5236\u9650\u3084\u30bf\u30a4\u30df\u30f3\u30b0\u4ed5\u69d8\u3092\u628a\u63e1\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u30af\u30ed\u30c3\u30af\u30c9\u30e1\u30a4\u30f3\u306e\u5206\u96e2\u3084\u30bf\u30a4\u30df\u30f3\u30b0\u53ce\u675f\u304c\u4e0d\u5341\u5206\u3060\u3068\u3001\u30e9\u30f3\u30c0\u30e0\u306a\u30c7\u30fc\u30bf\u5316\u3051\u3084XIP\u4e0d\u5177\u5408\u306e\u539f\u56e0\u306b\u306a\u308a\u307e\u3059\u3002\u3055\u3089\u306b\u3001PCB\u8a2d\u8a08\u3067\u306fQSPI\u30e9\u30a4\u30f3\u306e\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u6574\u5408\u3001\u30e9\u30a4\u30f3\u9577\u306e\u3070\u3089\u3064\u304d\u3001\u7d42\u7aef\u51e6\u7406\u306a\u3069\u7269\u7406\u5c64\u306e\u914d\u616e\u3082\u4e0d\u53ef\u6b20\u3067\u3059\u3002\u7279\u306b\u9ad8\u901f\u5316\u3092\u72d9\u3046\u5834\u5408\u3001\u4fe1\u53f7\u306e\u7acb\u3061\u4e0a\u304c\u308a\u3084\u53cd\u5c04\u306e\u5f71\u97ff\u304c\u7121\u8996\u3067\u304d\u306a\u3044\u305f\u3081\u3001\u96fb\u6c17\u8a2d\u8a08\u3068\u30ed\u30b8\u30c3\u30af\u8a2d\u8a08\u306e\u4e21\u9762\u3067\u306e\u691c\u8a3c\u304c\u6c42\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n

\u8868\u793a\u51e6\u7406\u30fb\u30c7\u30fc\u30bf\u8ee2\u9001\u3092\u9ad8\u901f\u5316\u3057\u305f\u5b9f\u4f8b<\/strong><\/h3>\n\n\n\n

QSPI\u306e\u5b9f\u7528\u7684\u306a\u9ad8\u901f\u5316\u52b9\u679c\u3092\u793a\u3059\u5177\u4f53\u4f8b\u3068\u3057\u3066\u3001\u8868\u793a\u51e6\u7406\u3068\u30c7\u30fc\u30bf\u8ee2\u9001\u306b\u95a2\u3059\u308b\u6210\u529f\u4e8b\u4f8b\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002 QSPI\u3092\u6d3b\u7528\u3057\u3066\u6db2\u6676\u30c7\u30a3\u30b9\u30d7\u30ec\u30a4\u306e\u63cf\u753b\u51e6\u7406\u309260FPS\u3067\u5b9f\u73fe\u3057\u305f\u4e8b\u4f8b\u3067\u306f\u3001DMA\u8ee2\u9001\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u5236\u5fa1\u3001\u30bf\u30a4\u30df\u30f3\u30b0\u8abf\u6574\u306e3\u70b9\u304c\u6210\u529f\u306e\u8981\u56e0\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u753b\u50cf\u30c7\u30fc\u30bf\u306fQSPI\u30d5\u30e9\u30c3\u30b7\u30e5\u306b\u4fdd\u5b58\u3055\u308c\u3001DMA\u7d4c\u7531\u3067RAM\u306b\u8ee2\u9001\u3055\u308c\u3064\u3064\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u6d3b\u7528\u3057\u3066\u30d0\u30b9\u8ca0\u8377\u3092\u4f4e\u6e1b\u3057\u3066\u3044\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u30d5\u30ec\u30fc\u30e0\u66f4\u65b0\u30bf\u30a4\u30df\u30f3\u30b0\u3068DMA\u30c8\u30ea\u30ac\u306e\u540c\u671f\u3092\u56f3\u308b\u3053\u3068\u3067\u3001\u3061\u3089\u3064\u304d\u306e\u306a\u3044\u9ad8\u901f\u63cf\u753b\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u3053\u306e\u3088\u3046\u306b\u3001QSPI\u306e\u6027\u80fd\u3092\u5f15\u304d\u51fa\u3059\u306b\u306f\u3001\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3068\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u4e21\u9762\u306e\u8abf\u6574\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/p>\n\n\n\n

QSPI\u306b\u3088\u308b\u6027\u80fd\u5411\u4e0a\u3092\u8a2d\u8a08\u306b\u6d3b\u304b\u3059\u305f\u3081\u306e\u30dd\u30a4\u30f3\u30c8<\/strong><\/h2>\n\n\n\n

QSPI\u3092\u6d3b\u7528\u3057\u305f\u9ad8\u901f\u5316\u306b\u306f\u3001\u7269\u7406\u30ec\u30a4\u30e4\u304b\u3089\u30d5\u30a1\u30fc\u30e0\u30a6\u30a7\u30a2\u8a2d\u8a08\u306b\u81f3\u308b\u307e\u3067\u591a\u9762\u7684\u306a\u6700\u9069\u5316\u304c\u6c42\u3081\u3089\u308c\u307e\u3059\u3002\u5404\u30b7\u30b9\u30c6\u30e0\u306e\u5236\u7d04\u306b\u5fdc\u3058\u3066\u3001I\/O\u69cb\u6210\u3001\u8ee2\u9001\u65b9\u5f0f\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u5236\u5fa1\u3001\u30af\u30ed\u30c3\u30af\u8a2d\u8a08\u306a\u3069\u3092\u7dcf\u5408\u7684\u306b\u898b\u76f4\u3057\u3001\u5b9f\u6a5f\u691c\u8a3c\u306b\u57fa\u3065\u3044\u305f\u6539\u5584\u3092\u7a4d\u307f\u91cd\u306d\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n

QSPI\u9ad8\u901f\u5316\u306e\u91cd\u8981\u30dd\u30a4\u30f3\u30c8\u307e\u3068\u3081<\/strong><\/h3>\n\n\n\n

\u9ad8\u901f\u306aQSPI\u901a\u4fe1\u3092\u5b9f\u73fe\u3059\u308b\u306b\u306f\u3001\u307e\u305a\u30d5\u30e9\u30c3\u30b7\u30e5\u3068\u30de\u30a4\u30b3\u30f3\u9593\u306eI\/O\u69cb\u6210\u306e\u9078\u5b9a\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002\u6b21\u306b\u3001\u30c0\u30df\u30fc\u30b5\u30a4\u30af\u30eb\u306e\u8abf\u6574\u3084XIP\u306e\u6d3b\u7528\u3001DMA\u9023\u643a\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u6700\u9069\u5316\u306a\u3069\u3001\u30ec\u30a4\u30e4\u3092\u307e\u305f\u3044\u3060\u8a2d\u8a08\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u4f7f\u7528\u3059\u308b\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306e\u4ed5\u69d8\u306b\u5fdc\u3058\u305f\u30af\u30ed\u30c3\u30af\u8a2d\u8a08\u3084\u30ec\u30b8\u30b9\u30bf\u8a2d\u5b9a\u3082\u6700\u9069\u5316\u306e\u5bfe\u8c61\u3068\u306a\u308a\u307e\u3059\u3002\u9ad8\u901f\u5316\u306f\u5358\u4e00\u306e\u624b\u6cd5\u3067\u306a\u304f\u3001\u8907\u6570\u306e\u6280\u8853\u3092\u6709\u6a5f\u7684\u306b\u7d71\u5408\u3057\u3066\u521d\u3081\u3066\u5b9f\u73fe\u3067\u304d\u308b\u305f\u3081\u3001\u500b\u5225\u6700\u9069\u3068\u5168\u4f53\u6700\u9069\u306e\u8996\u70b9\u304c\u6b20\u304b\u305b\u307e\u305b\u3093\u3002<\/p>\n\n\n\n

\u3088\u304f\u3042\u308b\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u4f4e\u4e0b\u306e\u8981\u56e0\u3068\u5bfe\u7b56<\/strong><\/h3>\n\n\n\n

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