H<\/strong>:\u00a0FIFO \u304c\u30d5\u30eb\u3067\u3001src.valid = True \u304b\u3064 dst.ready = True\u3002dst.ready = True \u306a\u306e\u3067\u3001\u3053\u306e\u30b5\u30a4\u30af\u30eb\u3067\u30c7\u30fc\u30bf\u306f sink \u304c\u53d7\u3051\u53d6\u308c\u3066\u3044\u307e\u3059\u3002\u6b21\u30b5\u30a4\u30af\u30eb\u3067 source \u304b\u3089\u306e\u30c7\u30fc\u30bf\u3092\u53d7\u3051\u53d6\u308c\u308b\u306e\u3067\u3001src.ready = True \u3067\u793a\u3057\u307e\u3059\u3002\uff08src.valid \u304c True \u3067 dst.ready \u304c True \u3060\u3068\u3001\u3053\u306e\u72b6\u614b rV D-FF = 1 \u304b\u3064\u3001\u30e9\u30d9\u30eb H \u306e\u5165\u529b\u304c\u9023\u7d9a\u3057\u3001\u7d50\u679c\u3068\u3057\u3066 source \u304b\u3089 sink \u3078\u30011\u30b5\u30a4\u30af\u30eb\u9045\u5ef6\u3067\u6bce\u30b5\u30a4\u30af\u30eb\u30c7\u30fc\u30bf\u304c\u8ee2\u9001\u3055\u308c\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\uff09<\/li>\n<\/ul>\n\u3044\u304b\u304c\u3067\u3057\u3087\u3046\u304b\u3002\u671f\u5f85\u901a\u308a\u306e\u52d5\u4f5c\u306b\u306a\u3063\u3066\u3044\u305d\u3046\u3067\u3059\u306d\u3002<\/p>\n
\u305d\u308c\u306b\u3057\u3066\u3082\u3001FIFO \u3068\u3044\u3046\u306e\u306f\u610f\u5916\u3068\u96e3\u3057\u3044\u3082\u306e\u3060\u3068\u3044\u3046\u3053\u3068\u304c\u5206\u304b\u308a\u307e\u3057\u305f\u3002\u3057\u304b\u3057\u3001\u3053\u3053\u307e\u3067\u89e3\u8aad\u3067\u304d\u308c\u3070\u3001\u81ea\u5206\u3067\u3082 m2sPipe \u304f\u3089\u3044\u306f\u8a2d\u8a08\u3067\u304d\u305d\u3046\u306a\u6c17\u3082\u3057\u3066\u304d\u307e\u3059\u306d\u3002\uff08\u7121\u7406\u304b\u306a?\uff09<\/p>\n
\u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u6ce2\u5f62\u306b\u72b6\u614b\u3092\u51fa\u529b\u3059\u308b\u65b9\u6cd5<\/h2>\n
\u3055\u3066\u3001\u4e0a\u8ff0\u306e\u6ce2\u5f62\u3067\u72b6\u614b\u3092\u6587\u5b57\u5217\u3067\u8868\u793a\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u3053\u308c\u306f\u3069\u3046\u3084\u308b\u306e\u3067\u3057\u3087\u3046\u3002\u5b9f\u306f SpinalHDL \u306b\u306f SpinalEnum \u3068\u3044\u3046\u578b\u304c\u5b9a\u7fa9\u3055\u308c\u3066\u304a\u308a\u3001\u305d\u308c\u3092\u4f7f\u3046\u3053\u3068\u3067\u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u7d50\u679c\u306b\u6587\u5b57\u5217\u3092\u5f97\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30b3\u30fc\u30c9\u3092\u793a\u3057\u3066\u304a\u304d\u307e\u3059\u3002\u3042\u307e\u308a\u7dba\u9e97\u3067\u306a\u3044\u3067\u3059\u304c\u5fa1\u5bb9\u8d66\u304f\u3060\u3055\u3044\u3002<\/p>\n
import spinal.core._\nimport spinal.lib._\n\nobject FifoState extends SpinalEnum {\n val state0, state1 = newElement()\n}\n\nobject FifoInput extends SpinalEnum {\n val A, C, E, F, G, H, X = newElement()\n}\n\nclass LearnFifo(\n width_payload: Int\n) extends Component { \n val io = new Bundle {\n val src = slave Stream (Bits(width_payload bits))\n val dst = master Stream (Bits(width_payload bits))\n }\n\n val state = FifoState() \/\/ \u72b6\u614b\n val inputs = FifoInput() \/\/ \u5165\u529b\u30e9\u30d9\u30eb\n \n io.src.m2sPipe() >> io.dst\n \n when(io.dst.valid) {\n state := FifoState.state1\n } otherwise {\n state := FifoState.state0\n } \n \n inputs := FifoInput.X\n\n when(state === FifoState.state0 && !io.src.valid) {\n inputs := FifoInput.A\n }\n when(state === FifoState.state0 && io.src.valid) {\n inputs := FifoInput.C\n }\n when(state === FifoState.state1 && !io.src.valid && !io.src.ready) {\n inputs := FifoInput.E\n }\n when(state === FifoState.state1 && !io.src.valid && io.src.ready) {\n inputs := FifoInput.F\n }\n when(state === FifoState.state1 && io.src.valid && !io.src.ready) {\n inputs := FifoInput.G\n }\n when(state === FifoState.state1 && io.src.valid && io.src.ready) {\n inputs := FifoInput.H\n }\n}\n<\/code><\/pre>\n\u4eca\u65e5\u306f\u3053\u3053\u307e\u3067\u3002<\/p>\n
\u304a\u554f\u3044\u5408\u308f\u305b\u306f\u304a\u6c17\u8efd\u306b<\/h2>\n
![\"\"](\"http:\/\/flogics.com\/wp\/wp-content\/uploads\/2020\/03\/streamfifo.svg\")
<\/a><\/p>\n![\"\"](\"http:\/\/flogics.com\/wp\/wp-content\/uploads\/2020\/03\/0723bfd798928bb531a2b24168cf5c77-1024x306.png\")
<\/a><\/p>\n