{"id":158,"date":"2026-04-05T16:31:18","date_gmt":"2026-04-05T08:31:18","guid":{"rendered":"http:\/\/blog.echoxx.tech\/?p=158"},"modified":"2026-04-05T16:31:18","modified_gmt":"2026-04-05T08:31:18","slug":"jtag%e5%92%8cswd%e7%9a%84%e7%ae%80%e5%8d%95%e4%ba%86%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/blog.echoxx.tech\/index.php\/2026\/04\/05\/jtag%e5%92%8cswd%e7%9a%84%e7%ae%80%e5%8d%95%e4%ba%86%e8%a7%a3\/","title":{"rendered":"JTAG\u548cSWD\u7684\u7b80\u5355\u4e86\u89e3"},"content":{"rendered":"\n
\n
\n

JTAG<\/strong><\/h1>\n\n\n\n

JTAG \u662f\u4e00\u79cd\u4e32\u884c\u901a\u4fe1\u534f\u8bae<\/strong>\u548c\u786c\u4ef6\u63a5\u53e3\uff0c\u7528\u4e8e\uff1a<\/p>\n\n\n\n

    \n
  • \u5bf9\u82af\u7247\u5185\u90e8\u8fdb\u884c\u8c03\u8bd5\u3001\u63a7\u5236\u548c\u6d4b\u8bd5<\/li>\n\n\n\n
  • \u5b9e\u73b0 SoC\/FPGA\/CPU \u7684\u8c03\u8bd5\u529f\u80fd\uff08\u5982\u65ad\u70b9\u3001\u5355\u6b65\u6267\u884c\u3001\u5bc4\u5b58\u5668\u8bbf\u95ee\uff09<\/li>\n\n\n\n
  • \u5728\u7cfb\u7edf\u4e0d\u8fd0\u884c\u65f6\u4e5f\u80fd\u8bbf\u95ee\u82af\u7247\u5185\u90e8\u72b6\u6001<\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n
    \n

    1\u3001JTAG\u63a5\u53e3\u5f15\u811a<\/h2>\n\n\n\n

    \u3000\u3000\u6807\u51c6 JTAG \u63a5\u53e3\u81f3\u5c11\u6709\u4ee5\u4e0b 4~5 \u6839\u5f15\u811a\uff1a<\/p>\n\n\n\n

    \u5f15\u811a\u63a5\u53e3<\/td>\u542b\u4e49<\/td>\u65b9\u5411<\/td><\/tr>
    TDI<\/td>Test Data In\uff1a\u8f93\u5165\u6570\u636e<\/td>\u8c03\u8bd5\u5668 \u2192 \u76ee\u6807<\/td><\/tr>
    TDO<\/td>Test Data Out\uff1a\u8f93\u51fa\u6570\u636e<\/td>\u76ee\u6807 \u2192 \u8c03\u8bd5\u5668<\/td><\/tr>
    TCK<\/td>Test Clock\uff1a\u65f6\u949f\u4fe1\u53f7<\/td>\u8c03\u8bd5\u5668 \u2192 \u76ee\u6807<\/td><\/tr>
    TMS<\/td>Test Mode Select\uff1a\u6a21\u5f0f\u63a7\u5236<\/td>\u8c03\u8bd5\u5668 \u2192 \u76ee\u6807<\/td><\/tr>
    nTRST\uff08\u53ef\u9009\uff09<\/td>\u6d4b\u8bd5\u903b\u8f91\u590d\u4f4d<\/td>\u8c03\u8bd5\u5668 \u2192 \u76ee\u6807<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

     \u5e38\u89c1 JTAG \u8fde\u63a5\u5934\u4e3a 10-pin \u6216 20-pin IDC \u63a5\u5934<\/strong>\uff082.54mm \u6392\u9488\uff09\u3002<\/p>\n<\/div><\/div>\n\n\n\n

    \n

    2\u3001JTAG \u5185\u90e8\u7ed3\u6784\u539f\u7406\uff08\u7b80\u5316\uff09<\/h2>\n\n\n\n

    \u3000\u3000\u6bcf\u4e2a\u652f\u6301 JTAG \u7684\u82af\u7247\u5185\u90e8\u6709\u4e00\u4e2a JTAG \u72b6\u6001\u673a\uff08TAP Controller\uff09\uff0c\u7528\u4e8e\u89e3\u6790 TMS\/TCK \u63a7\u5236\u4fe1\u53f7\uff0c\u5e76\u8bbf\u95ee\uff1a<\/p>\n\n\n\n

      \n
    • \u8fb9\u754c\u626b\u63cf\u5bc4\u5b58\u5668\uff08\u7528\u4e8e\u6d4b\u8bd5 PCB \u710a\u63a5\u60c5\u51b5\uff09<\/li>\n\n\n\n
    • \u6307\u4ee4\u5bc4\u5b58\u5668\uff08IR\uff09<\/li>\n\n\n\n
    • \u6570\u636e\u5bc4\u5b58\u5668\uff08DR\uff09<\/li>\n\n\n\n
    • \u5185\u90e8\u8c03\u8bd5\u63a5\u53e3\uff08\u5982 ARM DAP\u3001FPGA \u914d\u7f6e\u5f15\u64ce\uff09<\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n
      \n

      3\u3001JTAG \u7684\u4e3b\u8981\u7528\u9014<\/h2>\n\n\n\n

      \u3000\u2460\u8fb9\u754c\u626b\u63cf\uff08Boundary Scan\uff09<\/p>\n\n\n\n

        \n
      • \u6d4b\u8bd5 PCB \u4e0a\u82af\u7247\u4e0e\u82af\u7247\u4e4b\u95f4\u7684\u4e92\u8fde\u4fe1\u53f7\u662f\u5426\u710a\u63a5\u826f\u597d<\/li>\n\n\n\n
      • \u65e0\u9700\u4e0a\u7535\u8fd0\u884c\u7cfb\u7edf\uff0c\u53ea\u9700\u6d4b\u8bd5\u7ba1\u811a\u72b6\u6001<\/li>\n\n\n\n
      • \u9002\u7528\u4e8e\u590d\u6742 PCB \u9a8c\u8bc1\u548c\u4ea7\u7ebf\u6d4b\u8bd5<\/li>\n<\/ul>\n\n\n\n

        \u3000\u2461\u7a0b\u5e8f\u4e0b\u8f7d \/ \u70e7\u5f55<\/p>\n\n\n\n

          \n
        • \u901a\u8fc7 JTAG \u4e0b\u8f7d\u7a0b\u5e8f\u5230 MCU \/ SoC \u7684 Flash<\/li>\n\n\n\n
        • \u4e0b\u8f7d FPGA \u7684\u914d\u7f6e\u6570\u636e\uff08bitstream\uff09<\/li>\n<\/ul>\n\n\n\n

          \u3000\u2462\u8c03\u8bd5\u5904\u7406\u5668\uff08Debug\uff09<\/p>\n\n\n\n

            \n
          • \u63a7\u5236 CPU \u6682\u505c\u3001\u5355\u6b65\u3001\u8bbe\u7f6e\u65ad\u70b9<\/li>\n\n\n\n
          • \u8bfb\u5199\u5bc4\u5b58\u5668\u548c\u5185\u5b58<\/li>\n\n\n\n
          • \u5728\u7cfb\u7edf\u5954\u6e83\u6216\u6b7b\u673a\u65f6\u4ecd\u53ef\u5206\u6790\u72b6\u6001\uff08\u4e0d\u50cf\u4e32\u53e3\u8c03\u8bd5\u90a3\u6837\u4f9d\u8d56\u8fd0\u884c\u7cfb\u7edf\uff09<\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n
            \n

            4\u3001\u5b9e\u9645\u5e94\u7528\u4e3e\u4f8b<\/h2>\n\n\n\n

            \u3000\u2460STM32 \u6216 Cortex-M \u5fae\u63a7\u5236\u5668\uff1a<\/p>\n\n\n\n

              \n
            • \u4f7f\u7528 JTAG \u6216 SWD \u63a5\u53e3\u8fde\u63a5 ST-Link\/J-Link<\/li>\n\n\n\n
            • \u5728 IDE\uff08\u5982 Keil\u3001IAR\u3001STM32CubeIDE\uff09\u4e2d\u8fdb\u884c\u5728\u7ebf\u8c03\u8bd5<\/li>\n<\/ul>\n\n\n\n

              \u3000\u2461FPGA\uff1a<\/p>\n\n\n\n

                \n
              • \u4f7f\u7528 JTAG \u5c06\u914d\u7f6e\u6587\u4ef6\u4e0b\u8f7d\u5230 SRAM \u6216 Flash<\/li>\n\n\n\n
              • \u7528\u6765\u8c03\u8bd5 RTL \u903b\u8f91\uff08\u5982 Xilinx ILA\u3001SignalTap\uff09<\/li>\n<\/ul>\n\n\n\n

                \u3000\u2462PCBA \u6d4b\u8bd5\uff1a<\/p>\n\n\n\n

                  \n
                • \u5229\u7528\u8fb9\u754c\u626b\u63cf\u6a21\u5f0f\u81ea\u52a8\u6d4b\u8bd5\u710a\u63a5\u8d28\u91cf\uff08\u5982\u98de\u9488\u6d4b\u8bd5\u3001\u81ea\u52a8\u6d4b\u8bd5\u4eea\uff09<\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n
                  \n

                  5\u3001\u5e38\u89c1JTAG\u8c03\u8bd5\u5668<\/h2>\n\n\n\n
                  \u8c03\u8bd5\u5668<\/strong><\/td>\u652f\u6301\u5e73\u53f0<\/strong><\/td>\u63a5\u53e3\u7c7b\u578b<\/strong><\/td><\/tr>
                  ST-Link<\/td>STM32<\/td>SWD \/ JTAG<\/td><\/tr>
                  J-Link<\/td>\u901a\u7528 ARM <\/td>SWD \/ JTAG<\/td><\/tr>
                  Xilinx Platform Cable<\/td>FPGA<\/td>JTAG<\/td><\/tr>
                  OpenOCD <\/td>\u591a\u5e73\u53f0\u5f00\u6e90<\/td>SWD \/ JTAG<\/td><\/tr>
                  DAPLink<\/td>ARM<\/td>SWD \/ JTAG<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n
                  \n
                  \n

                  SWD<\/h1>\n\n\n\n
                  \n

                  SWD = Serial Wire Debug<\/strong><\/p>\n<\/blockquote>\n\n\n\n

                  \u3000\u3000SWD \u662f\u4e00\u79cd\u57fa\u4e8e \u4e32\u884c\u901a\u4fe1\u7684\u8c03\u8bd5\u534f\u8bae<\/strong>\uff0c\u7528\u4e8e\u4e0e ARM Cortex-M \u7cfb\u5217\uff08\u5982 STM32\u3001nRF\u3001GD32\u3001LPC\uff09\u7b49\u5fae\u63a7\u5236\u5668\u8fdb\u884c\u8c03\u8bd5\u548c\u7f16\u7a0b\u3002\u5b83\u662f ARM Debug Access Port\uff08DAP\uff09<\/strong> \u67b6\u6784\u7684\u4e00\u90e8\u5206\u3002<\/p>\n\n\n\n

                  \n

                  SWD \u7684\u7279\u70b9<\/p>\n\n\n\n

                  \u7279\u6027<\/td>\u63cf\u8ff0<\/td><\/tr>
                  \u5f15\u811a\u5c11<\/td>\u53ea\u9700\u8981 2 \u6839\u4fe1\u53f7\u7ebf\uff08+ GND\uff09\uff0c\u9002\u5408\u5f15\u811a\u7d27\u5f20\u7684\u82af\u7247\u6216\u677f\u5b50<\/td><\/tr>
                  \u4f4e\u6210\u672c\u3001\u9ad8\u6027\u80fd<\/td>\u66ff\u4ee3 JTAG\uff0c\u786c\u4ef6\u8d44\u6e90\u6d88\u8017\u66f4\u5c11<\/td><\/tr>
                  \u529f\u80fd\u5f3a\u5927<\/td>\u652f\u6301\u5355\u6b65\u8c03\u8bd5\u3001\u65ad\u70b9\u3001\u5185\u5b58\/\u5bc4\u5b58\u5668\u8bbf\u95ee\u3001Flash \u7f16\u7a0b<\/td><\/tr>
                  \u4e0eJTAG\u517c\u5bb9<\/td>\u591a\u6570\u82af\u7247\u53ef\u5728 SWD \u548c JTAG \u4e4b\u95f4\u5207\u6362<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/blockquote>\n<\/div><\/div>\n\n\n\n
                  \n

                  1\u3001SWD\u63a5\u53e3\u5f15\u811a\u5b9a\u4e49<\/h2>\n\n\n\n
                  \u5f15\u811a\u540d<\/td>\u529f\u80fd\u8bf4\u660e<\/td><\/tr>
                  SWDIO<\/td>\u4e32\u884c\u6570\u636e\u7ebf\uff08\u53cc\u5411\uff09<\/td><\/tr>
                  SWCLK<\/td>\u4e32\u884c\u65f6\u949f\uff08\u8c03\u8bd5\u5668\u9a71\u52a8\uff09<\/td><\/tr>
                  GND<\/td>\u63a5\u5730\uff08\u5171\u5730\uff09<\/td><\/tr>
                  nRESET\uff08\u53ef\u9009\uff09<\/td>\u5916\u90e8\u590d\u4f4d\u5f15\u811a<\/td><\/tr>
                  VCC \/ VTref\uff08\u53ef\u9009\uff09<\/td>\u63d0\u4f9b\u76ee\u6807\u7535\u538b\u53c2\u8003\u7ed9\u8c03\u8bd5\u5668\uff0c\u7528\u4e8e\u7535\u5e73\u5339\u914d<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
                  \n

                  \u6ce8\u610f<\/strong>\uff1aSWDIO \u662f\u53cc\u5411\u6570\u636e\u7ebf\uff0c\u4e00\u822c\u9700\u8981\u63a5\u4e00\u4e2a \u4e0a\u62c9\u7535\u963b<\/strong>\uff08\u901a\u5e38\u4e3a 10k\u03a9 \u5230 47k\u03a9\uff09\u3002<\/p>\n<\/blockquote>\n<\/div><\/div>\n\n\n\n

                  \n

                  2\u3001SWD\u63a5\u53e3\u539f\u7406\uff08\u7b80\u56fe\uff09<\/h2>\n\n\n\n
                  1234567<\/td>\u8c03\u8bd5\u5668\u7aef                        \u76ee\u6807 MCU<\/code>\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510                   \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510<\/code>\u2502 SWDIO \u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u25ba\u2500\u2500\u2500\u2524 SWDIO(PA<\/code>13<\/code>)\u2502<\/code>\u2502 SWCLK \u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u25ba\u2500\u2500\u2500\u2524 SWCLK(PA<\/code>14<\/code>)\u2502<\/code>\u2502 GND   \u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524 GND        \u2502<\/code>\u2502 nRESET\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u25ba(\u53ef\u9009)\u2500\u2500\u2500\u2500\u2500\u2500\u2524 NRST       \u2502<\/code>\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518                   \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div><\/div>\n\n\n\n
                  \n

                  3\u3001\u4f7f\u7528 SWD \u7684\u5e38\u89c1\u5de5\u5177<\/h2>\n\n\n\n
                  \u8c03\u8bd5\u5668<\/td>\u652f\u6301\u5e73\u53f0<\/td>\u63a5\u53e3<\/td><\/tr>
                  ST-Link<\/td>STM32\u3001GD32 \u7b49<\/td>SWD<\/td><\/tr>
                  J-Link<\/td>\u901a\u7528 ARM<\/td>SWD\/JTAG<\/td><\/tr>
                  DAPLink<\/td>\u901a\u7528 ARM<\/td>SWD<\/td><\/tr>
                  CMSIS-DAP<\/td>\u6807\u51c6\u5f00\u653e\u534f\u8bae<\/td>SWD<\/td><\/tr>
                  OpenOCD<\/td>\u5f00\u6e90\u8c03\u8bd5\u8f6f\u4ef6<\/td>SWD\/JTAG<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div><\/div>\n\n\n\n
                  \n

                  4\u3001SWD\u7684\u5b9e\u9645\u7528\u9014<\/h2>\n\n\n\n
                    \n
                  • \u5411 MCU \u4e0b\u8f7d\u7a0b\u5e8f\uff08Flash \u7f16\u7a0b\uff09<\/li>\n\n\n\n
                  • \u8bbe\u7f6e\u786c\u4ef6\u65ad\u70b9\u3001\u5355\u6b65\u8c03\u8bd5<\/li>\n\n\n\n
                  • \u5b9e\u65f6\u53d8\u91cf\u67e5\u770b\uff08watch\/monitor\uff09<\/li>\n\n\n\n
                  • \u4e0e IDE\uff08\u5982 Keil\u3001STM32CubeIDE\uff09\u8054\u52a8\u8c03\u8bd5<\/li>\n\n\n\n
                  • \u5728 MCU \u6b7b\u673a\u65f6\u901a\u8fc7 SWD \u4ecd\u53ef\u8bbf\u95ee\u5bc4\u5b58\u5668\u4e0e\u5185\u5b58<\/li>\n<\/ul>\n\n\n\n
                    \n

                    \u8bb8\u591a\u5f00\u53d1\u677f\u7684 SWD \u63a5\u53e3\u7528\u6765\u70e7\u5f55\u7a0b\u5e8f\u5230 Flash\uff0c\u5982 STM32 \u7684 .hex<\/code> \u6216 .bin<\/code> \u6587\u4ef6\u3002\u4f7f\u7528 ST-Link Utility \u6216 STM32CubeProgrammer\uff0c\u5373\u53ef\u901a\u8fc7 SWD \u70e7\u5199\u76ee\u6807 MCU\u3002<\/p>\n\n\n\n

                    SWD \u7684\u4f7f\u7528\u6ce8\u610f\u4e8b\u9879<\/p>\n\n\n\n

                      \n
                    • \u4e0a\u7535\u540e\u7b2c\u4e00\u65f6\u95f4\u521d\u59cb\u5316 SWDIO\/SWCLK\uff0c\u907f\u514d\u88ab\u7a0b\u5e8f\u5360\u7528\u6210 GPIO<\/li>\n\n\n\n
                    • \u51fa\u73b0\u65e0\u6cd5\u8fde\u63a5\u65f6\uff0c\u53ef\u5c1d\u8bd5\u4f7f\u7528 nRESET \u5f3a\u5236\u590d\u4f4d\u8fdb\u5165 Bootloader<\/li>\n\n\n\n
                    • \u82e5\u7a0b\u5e8f\u914d\u7f6e\u4e86 SWD \u5f15\u811a\u4e3a\u666e\u901a IO\uff0c\u53ef\u80fd\u9700\u8981\u8fdb\u5165\u7cfb\u7edf Boot \u6a21\u5f0f\u91cd\u65b0\u89e3\u9501<\/li>\n<\/ul>\n<\/blockquote>\n<\/div><\/div>\n\n\n\n
                      \n
                      \n

                      SWD \u548c JTAG \u7684\u5bf9\u6bd4<\/h2>\n\n\n\n
                      \u7279\u6027<\/th>SWD<\/strong><\/th>JTAG<\/strong><\/th><\/tr><\/thead>
                      \u4fe1\u53f7\u7ebf\u6570<\/td>2\uff08SWDIO, SWCLK\uff09<\/td>4~5\uff08TMS, TCK, TDI, TDO, nTRST\uff09<\/td><\/tr>
                      \u8c03\u8bd5\u529f\u80fd<\/td>\u652f\u6301\uff08\u65ad\u70b9\u3001\u5355\u6b65\u3001\u5bc4\u5b58\u5668\u8bbf\u95ee\uff09<\/td>\u652f\u6301<\/td><\/tr>
                      \u8282\u7701 IO<\/td>\u2705<\/td>\u274c<\/td><\/tr>
                      \u8fb9\u754c\u626b\u63cf\u529f\u80fd<\/td>\u274c\uff08\u4e0d\u652f\u6301\uff09<\/td>\u2705\uff08\u652f\u6301\uff09<\/td><\/tr>
                      ARM Cortex-M \u9002\u914d<\/td>\u2705\uff08\u4e13\u5c5e\uff09<\/td>\u2705\uff08\u4e5f\u652f\u6301\uff09<\/td><\/tr>
                      FPGA \u9002\u914d<\/td>\u274c<\/td>\u2705<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div><\/div>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n

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

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