{"id":1399,"date":"2026-05-08T14:16:01","date_gmt":"2026-05-08T06:16:01","guid":{"rendered":"http:\/\/www.hanhhsir.cn\/?p=1399"},"modified":"2026-05-08T21:36:31","modified_gmt":"2026-05-08T13:36:31","slug":"%e5%9f%ba%e4%ba%8eahb%e7%9a%84%e5%9b%9b%e9%80%9a%e9%81%93dma%e6%8e%a7%e5%88%b6%e5%99%a8%e8%ae%be%e8%ae%a1-dma%e9%80%9a%e9%81%93%e6%a8%a1%e5%9d%97","status":"publish","type":"post","link":"http:\/\/www.hanhhsir.cn\/index.php\/2026\/05\/08\/%e5%9f%ba%e4%ba%8eahb%e7%9a%84%e5%9b%9b%e9%80%9a%e9%81%93dma%e6%8e%a7%e5%88%b6%e5%99%a8%e8%ae%be%e8%ae%a1-dma%e9%80%9a%e9%81%93%e6%a8%a1%e5%9d%97\/","title":{"rendered":"\u57fa\u4e8eAHB\u7684\u56db\u901a\u9053DMA\u63a7\u5236\u5668\u8bbe\u8ba1-dmac_channel.v"},"content":{"rendered":"

DMA\u901a\u9053\u6a21\u5757 = 4\u4e2a\u72ec\u7acb\u7684\u4e2d\u8f6c\u8d27\u67b6\u7ba1\u7406\u95f4<\/strong><\/p>\n

`timescale 1ns\/10ps<\/p>\n

\/\/ ==============================
\n\/\/ \u6a21\u5757\u540d\uff1admac_channel<\/strong>
\n\/\/ \u529f\u80fd\uff1aDMA 4\u901a\u9053\u63a7\u5236\u5668<\/strong>
\n\/\/ \u573a\u666f\u5bf9\u5e94\uff1a\u30104\u4e2a\u72ec\u7acb\u7684\u5feb\u9012\u4e2d\u8f6c\u8d27\u67b6\u7ba1\u7406\u95f4\u3011<\/strong>
\n\/\/ \u6bcf\u4e2a\u901a\u9053 = 1\u4e2a\u8d27\u67b6\uff0c\u4e92\u4e0d\u5e72\u6270<\/strong>
\n\/\/ ==============================
\nmodule dmac_channel(<\/p>\n

\/\/ \u7cfb\u7edf\u4fe1\u53f7\uff1a\u65f6\u949f\u3001\u590d\u4f4d
\ninput clk, \/\/ \u65f6\u949f\uff1a\u5de5\u4f5c\u8282\u62cd
\ninput rst, \/\/ \u590d\u4f4d\uff1a\u6e05\u7a7a\u6240\u6709\u8d27\u67b6<\/p>\n

\/\/ ====================== \u901a\u90530 \u8d27\u67b6 ======================<\/strong>
\ninput clr_0, \/\/ \u6e05\u7a7a\u8d27\u67b60
\ninput wr_0, \/\/ \u5f80\u8d27\u67b60\u653e\u5feb\u9012
\ninput rd_0, \/\/ \u4ece\u8d27\u67b60\u53d6\u5feb\u9012
\ninput [31:0] wdata_0, \/\/ \u8981\u653e\u8fdb\u8d27\u67b60\u7684\u5feb\u9012
\noutput[31:0]rdata_0, \/\/ \u4ece\u8d27\u67b60\u62ff\u51fa\u7684\u5feb\u9012
\noutput full_0, \/\/ \u8d27\u67b60\u6ee1\u4e86\uff08\u4e0d\u80fd\u518d\u653e\uff09
\noutput empty_0, \/\/ \u8d27\u67b60\u7a7a\u4e86\uff08\u6ca1\u5feb\u9012\uff09<\/p>\n

\/\/ ====================== \u901a\u90531 \u8d27\u67b6 ======================<\/strong>
\ninput clr_1,
\ninput wr_1,
\ninput rd_1,
\ninput [31:0] wdata_1,
\noutput[31:0]rdata_1,
\noutput full_1,
\noutput empty_1,<\/p>\n

\/\/ ====================== \u901a\u90532 \u8d27\u67b6 ======================<\/strong>
\ninput clr_2,
\ninput wr_2,
\ninput rd_2,
\ninput [31:0] wdata_2,
\noutput[31:0]rdata_2,
\noutput full_2,
\noutput empty_2,<\/p>\n

\/\/ ====================== \u901a\u90533 \u8d27\u67b6 ======================<\/strong>
\ninput clr_3,
\ninput wr_3,
\ninput rd_3,
\ninput [31:0] wdata_3,
\noutput[31:0]rdata_3,
\noutput full_3,
\noutput empty_3<\/p>\n

);<\/p>\n

\/\/ ==============================
\n\/\/ \u5b9e\u4f8b\u5316 4\u4e2a\u72ec\u7acbFIFO\uff084\u4e2a\u4e2d\u8f6c\u8d27\u67b6\uff09<\/strong>
\n\/\/ ==============================<\/p>\n

\/\/ \u901a\u90530\uff1aFIFO\u8d27\u67b60<\/strong>
\ndmac_fifo u0_fifo (
\n.clk (clk),
\n.rst (rst),
\n.clear (clr_0),
\n.wr (wr_0),
\n.rd (rd_0),
\n.wdata (wdata_0),
\n.rdata (rdata_0),
\n.full (full_0),
\n.empty (empty_0)
\n);<\/p>\n

\/\/ \u901a\u90531\uff1aFIFO\u8d27\u67b61<\/strong>
\ndmac_fifo u1_fifo (
\n.clk (clk),
\n.rst (rst),
\n.clear (clr_1),
\n.wr (wr_1),
\n.rd (rd_1),
\n.wdata (wdata_1),
\n.rdata (rdata_1),
\n.full (full_1),
\n.empty (empty_1)
\n);<\/p>\n

\/\/ \u901a\u90532\uff1aFIFO\u8d27\u67b62<\/strong>
\ndmac_fifo u2_fifo (
\n.clk (clk),
\n.rst (rst),
\n.clear (clr_2),
\n.wr (wr_2),
\n.rd (rd_2),
\n.wdata (wdata_2),
\n.rdata (rdata_2),
\n.full (full_2),
\n.empty (empty_2)
\n);<\/p>\n

\/\/ \u901a\u90533\uff1aFIFO\u8d27\u67b63<\/strong>
\ndmac_fifo u3_fifo (
\n.clk (clk),
\n.rst (rst),
\n.clear (clr_3),
\n.wr (wr_3),
\n.rd (rd_3),
\n.wdata (wdata_3),
\n.rdata (rdata_3),
\n.full (full_3),
\n.empty (empty_3)
\n);<\/p>\n

endmodule<\/p>\n","protected":false},"excerpt":{"rendered":"

DMA\u901a\u9053\u6a21\u5757 = 4\u4e2a\u72ec\u7acb\u7684\u4e2d\u8f6c\u8d27\u67b6\u7ba1\u7406\u95f4 `timescale 1ns\/10ps \/\/ ============================== \/\/ \u6a21\u5757\u540d\uff1admac_channel \/\/ \u529f\u80fd\uff1aDMA 4\u901a\u9053\u63a7\u5236\u5668 \/\/ \u573a\u666f\u5bf9\u5e94\uff1a\u30104\u4e2a\u72ec\u7acb\u7684\u5feb\u9012\u4e2d\u8f6c\u8d27\u67b6\u7ba1\u7406\u95f4\u3011 \/\/ \u6bcf\u4e2a\u901a\u9053 = 1\u4e2a\u8d27\u67b6\uff0c\u4e92\u4e0d\u5e72\u6270 \/\/ ============================== module dmac_channel( \/\/ \u7cfb\u7edf\u4fe1\u53f7\uff1a\u65f6\u949f\u3001\u590d\u4f4d input clk, \/\/ \u65f6\u949f\uff1a\u5de5\u4f5c\u8282\u62cd input rst, \/\/ \u590d\u4f4d\uff1a\u6e05\u7a7a\u6240\u6709\u8d27\u67b6 \/\/ ====================== \u901a\u90530 \u8d27\u67b6 ====================== input clr_0, \/\/ \u6e05\u7a7a\u8d27\u67b60 input wr_0, \/\/ \u5f80\u8d27\u67b60\u653e\u5feb\u9012 input rd_0, \/\/ \u4ece\u8d27\u67b60\u53d6\u5feb\u9012 input [31:0] wdata_0, \/\/ \u8981\u653e\u8fdb\u8d27\u67b60\u7684\u5feb\u9012 output[31:0]rdata_0, \/\/ \u4ece\u8d27\u67b60\u62ff\u51fa\u7684\u5feb\u9012 output full_0, \/\/ \u8d27\u67b60\u6ee1\u4e86\uff08\u4e0d\u80fd\u518d\u653e\uff09 output empty_0, \/\/ \u8d27\u67b60\u7a7a\u4e86\uff08\u6ca1\u5feb\u9012\uff09 \/\/ ====================== \u901a\u90531 \u8d27\u67b6 ====================== input clr_1, input wr_1, input rd_1, input [31:0] wdata_1, output[31:0]rdata_1, output full_1, output empty_1, \/\/ ====================== \u901a\u90532 \u8d27\u67b6 ====================== input clr_2, input wr_2, input rd_2, input [31:0] wdata_2, output[31:0]rdata_2, output full_2, output empty_2, \/\/ ====================== \u901a\u90533 \u8d27\u67b6 ====================== input clr_3, input wr_3, input rd_3, input [31:0] wdata_3, output[31:0]rdata_3, output full_3, output empty_3 ); \/\/ ============================== \/\/ \u5b9e\u4f8b\u5316 4\u4e2a\u72ec\u7acbFIFO\uff084\u4e2a\u4e2d\u8f6c\u8d27\u67b6\uff09 \/\/ ============================== \/\/ \u901a\u90530\uff1aFIFO\u8d27\u67b60 dmac_fifo u0_fifo ( .clk (clk), .rst (rst), .clear (clr_0), .wr (wr_0), .rd (rd_0), .wdata (wdata_0), .rdata (rdata_0), .full (full_0), .empty (empty_0) ); \/\/ \u901a\u90531\uff1aFIFO\u8d27\u67b61 dmac_fifo u1_fifo ( .clk (clk), .rst (rst), .clear (clr_1), .wr (wr_1), .rd (rd_1), .wdata (wdata_1), .rdata (rdata_1), .full (full_1), .empty (empty_1) ); \/\/ \u901a\u90532\uff1aFIFO\u8d27\u67b62 dmac_fifo u2_fifo ( .clk (clk), .rst (rst), .clear (clr_2), .wr (wr_2), .rd (rd_2), .wdata (wdata_2), .rdata (rdata_2), .full (full_2), .empty (empty_2) ); \/\/ \u901a\u90533\uff1aFIFO\u8d27\u67b63 dmac_fifo u3_fifo ( .clk (clk), .rst (rst), .clear (clr_3), .wr (wr_3), .rd (rd_3), .wdata (wdata_3), .rdata (rdata_3), .full (full_3), .empty (empty_3) ); endmodule<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1399","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"http:\/\/www.hanhhsir.cn\/index.php\/wp-json\/wp\/v2\/posts\/1399","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.hanhhsir.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.hanhhsir.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.hanhhsir.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.hanhhsir.cn\/index.php\/wp-json\/wp\/v2\/comments?post=1399"}],"version-history":[{"count":4,"href":"http:\/\/www.hanhhsir.cn\/index.php\/wp-json\/wp\/v2\/posts\/1399\/revisions"}],"predecessor-version":[{"id":1410,"href":"http:\/\/www.hanhhsir.cn\/index.php\/wp-json\/wp\/v2\/posts\/1399\/revisions\/1410"}],"wp:attachment":[{"href":"http:\/\/www.hanhhsir.cn\/index.php\/wp-json\/wp\/v2\/media?parent=1399"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.hanhhsir.cn\/index.php\/wp-json\/wp\/v2\/categories?post=1399"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.hanhhsir.cn\/index.php\/wp-json\/wp\/v2\/tags?post=1399"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}