https://knightli.com/zh-tw/tags/%E7%B8%BD%E7%B7%9A%E6%8E%A5%E5%8F%A3/ Recent content in 總線接口 on KnightLi的博客 Hugo -- gohugo.io zh-tw Sun, 15 May 2022 00:00:00 +0000 https://knightli.com/zh-tw/2022/05/15/pci-express-%E5%BC%95%E8%85%B3%E5%AE%9A%E7%BE%A9/ Sun, 15 May 2022 00:00:00 +0000 https://knightli.com/zh-tw/2022/05/15/pci-express-%E5%BC%95%E8%85%B3%E5%AE%9A%E7%BE%A9/ <h2 id="插槽圖片">插槽圖片 </h2><p>PCI Express，簡稱PCI-E，官方簡稱PCIe，是計算機總線的一個重要分支, 插槽圖片如下：<br> <img src="https://knightli.com/2022/05/15/pci-express-%E5%BC%95%E8%84%9A%E5%AE%9A%E4%B9%89/1.png" width="797" height="294" srcset="https://knightli.com/2022/05/15/pci-express-%E5%BC%95%E8%84%9A%E5%AE%9A%E4%B9%89/1_hu_e34aa35fedfec19b.png 480w, https://knightli.com/2022/05/15/pci-express-%E5%BC%95%E8%84%9A%E5%AE%9A%E4%B9%89/1_hu_a59c9fbf166c47bd.png 1024w" loading="lazy" class="gallery-image" data-flex-grow="271" data-flex-basis="650px" ></p> <h2 id="引腳定義">引腳定義 </h2><p>下表列出在邊緣連接器上的PCI Express卡兩側的導線。在印刷電路板（PCB）的焊接側為A側，並且組件側的B側。 PRSNT1# 和PRSNT2# 引腳必須比其餘稍短，以確保熱插入卡完全插入。該WAKE# 引腳採用全電壓喚醒計算機，但必須拉高從備用電源，以表明該卡是能夠喚醒</p> <table style="text-align: center; margin-left: auto; margin-right: auto;"> <caption>PCI Express連接器引腳（×1，×4，×8，×16的變體） </caption> <tbody> <tr> <th>引腳</th> <th>B側</th> <th>A側</th> <th>描述 </th> <td rowspan="54"> </td> <th>引腳</th> <th>B側</th> <th>A側</th> <th>描述 </th> </tr> <tr> <th>1 </th> <td style="background:silver">+12 V</td> <td style="background:#9f9">PRSNT1#</td> <td align="left">必須連接到最遠PRSNT2# 引腳 </td> <th>50 </th> <td style="background:#99f">HSOp (8)</td> <td style="background:#ff9">Reserved</td> <td rowspan="2" style="text-align:left;">通道8傳輸數據，+和− </td> </tr> <tr> <th>2 </th> <td style="background:silver">+12 V</td> <td style="background:silver">+12 V</td> <td rowspan="3"> </td> <th>51 </th> <td style="background:#99f">HSOn (8)</td> <td style="background:#999">Ground </td> </tr> <tr> <th>3 </th> <td style="background:silver">+12 V</td> <td style="background:silver">+12 V </td> <th>52 </th> <td style="background:#999">Ground</td> <td style="background:#f9f">HSIp (8)</td> <td rowspan="2" style="text-align:left;">通道8接收數據，+和− </td> </tr> <tr> <th>4 </th> <td style="background:#999">Ground</td> <td style="background:#999">Ground </td> <th>53 </th> <td style="background:#999">Ground</td> <td style="background:#f9f">HSIn (8) </td> </tr> <tr> <th>5 </th> <td style="background:#fc6">SMCLK</td> <td style="background:#99f">TCK</td> <td rowspan="5" style="text-align:left;">SMBus和JTAG端口引腳 </td> <th>54 </th> <td style="background:#99f">HSOp (9)</td> <td style="background:#999">Ground</td> <td rowspan="2" style="text-align:left;">通道9傳輸數據，+和− </td> </tr> <tr> <th>6 </th> <td style="background:#fc6">SMDAT</td> <td style="background:#99f">TDI </td> <th>55 </th> <td style="background:#99f">HSOn (9)</td> <td style="background:#999">Ground </td> </tr> <tr> <th>7 </th> <td style="background:#999">Ground</td> <td style="background:#f9f">TDO </td> <th>56 </th> <td style="background:#999">Ground</td> <td style="background:#f9f">HSIp (9)</td> <td rowspan="2" style="text-align:left;">通道9接收數據，+和− </td> </tr> <tr> <th>8 </th> <td style="background:silver">+3.3 V</td> <td style="background:#99f">TMS </td> <th>57 </th> <td style="background:#999">Ground</td> <td style="background:#f9f">HSIn (9) </td> </tr> <tr> <th>9 </th> <td style="background:#99f">TRST#</td> <td style="background:silver">+3.3 V </td> <th>58 </th> <td style="background:#99f">HSOp (10)</td> <td style="background:#999">Ground</td> <td rowspan="2" style="text-align:left;">通道10傳輸數據，+和− </td> </tr> <tr> <th>10 </th> <td style="background:silver">+3.3 V aux</td> <td style="background:silver">+3.3 V</td> <td align="left">備用電源 </td> <th>59 </th> <td style="background:#99f">HSOn (10)</td> <td style="background:#999">Ground </td> </tr> <tr> <th>11 </th> <td style="background:#fc6">WAKE#</td> <td style="background:#99f">PERST#</td> <td align="left">鏈接激活；基本複位 </td> <th>60 </th> <td style="background:#999">Ground</td> <td style="background:#f9f">HSIp (10)</td> <td rowspan="2" style="text-align:left;">通道10接收數據，+和− </td> </tr> <tr> <th colspan="4">Key notch </th> <th>61 </th> <td style="background:#999">Ground</td> <td style="background:#f9f">HSIn (10) </td> </tr> <tr> <th>12 </th> <td style="background:#fc6">CLKREQ#</td> <td style="background:#999">Ground</td> <td align="left">要求運行的時鐘 </td> <th>62 </th> <td style="background:#99f">HSOp (11)</td> <td style="background:#999">Ground</td> <td rowspan="2" style="text-align:left;">通道11傳輸數據，+和− </td> </tr> <tr> <th>13 </th> <td style="background:#999">Ground</td> <td style="background:#99f">REFCLK+</td> <td rowspan="2" align="left">參考時鐘差分對 </td> <th>63 </th> <td style="background:#99f">HSOn (11)</td> <td style="background:#999">Ground </td> </tr> <tr> <th>14 </th> <td style="background:#99f">HSOp (0)</td> <td style="background:#99f">REFCLK− </td> <th>64 </th> <td style="background:#999">Ground</td> <td style="background:#f9f">HSIp (11)</td> <td rowspan="2" style="text-align:left;">通道11接收數據，+和− </td> </tr> <tr> <th>15 </th> <td style="background:#99f">HSOn (0)</td> <td style="background:#999">Ground </td> <td> </td> <th>65 </th> <td style="background:#999">Ground</td> <td style="background:#f9f">HSIn (11) </td> </tr> <tr> <th>16 </th> <td style="background:#999">Ground</td> <td style="background:#f9f">HSIp (0)</td> <td rowspan="2" style="text-align:left;">通道0接收數據，+和− </td> <th>66 </th> <td style="background:#99f">HSOp (12)</td> <td style="background:#999">Ground</td> <td rowspan="2" style="text-align:left;">通道12傳輸數據，+和− </td> </tr> <tr> <th>17 </th> <td style="background:#9f9">PRSNT2#</td> <td style="background:#f9f">HSIn (0) </td> <th>67 </th> <td style="background:#99f">HSOn (12)</td> <td style="background:#999">Ground </td> </tr> <tr> <th>18 </th> <td style="background:#999">Ground</td> <td style="background:#999">Ground</td> <td> </td> <th>68 </th> <td style="background:#999">Ground</td> <td style="background:#f9f">HSIp (12)</td> <td rowspan="2" style="text-align:left;">通道12接收數據，+和− </td> </tr> <tr> <td colspan="4">PCI Express ×1卡於引腳18結束 </td> <th>69 </th> <td style="background:#999">Ground</td> <td style="background:#f9f">HSIn (12) </td> </tr> <tr> <th>19 </th> <td style="background:#99f">HSOp (1)</td> <td style="background:#ff9">Reserved</td> <td rowspan="2" style="text-align:left;">通道1傳輸數據，+和− </td> <th>70 </th> <td style="background:#99f">HSOp (13)</td> <td style="background:#999">Ground</td> <td rowspan="2" style="text-align:left;">通道13傳輸數據，+和− </td> </tr> <tr> <th>20 </th> <td style="background:#99f">HSOn (1)</td> <td style="background:#999">Ground </td> <th>71 </th> <td style="background:#99f">HSOn (13)</td> <td style="background:#999">Ground </td> </tr> <tr> <th>21 </th> <td style="background:#999">Ground</td> <td style="background:#f9f">HSIp (1)</td> <td rowspan="2" style="text-align:left;">通道1接收數據，+和− </td> <th>72 </th> <td style="background:#999">Ground</td> <td style="background:#f9f">HSIp (13)</td> <td rowspan="2" style="text-align:left;">通道13接收數據，+和− </td> </tr> <tr> <th>22 </th> <td style="background:#999">Ground</td> <td style="background:#f9f">HSIn (1) </td> <th>73 </th> <td style="background:#999">Ground</td> <td style="background:#f9f">HSIn (13) </td> </tr> <tr> <th>23 </th> <td style="background:#99f">HSOp (2)</td> <td style="background:#999">Ground</td> <td rowspan="2" style="text-align:left;">通道2傳輸數據，+和− </td> <th>74 </th> <td style="background:#99f">HSOp (14)</td> <td style="background:#999">Ground</td> <td rowspan="2" style="text-align:left;">通道14傳輸數據，+和− </td> </tr> <tr> <th>24 </th> <td style="background:#99f">HSOn (2)</td> <td style="background:#999">Ground </td> <th>75 </th> <td style="background:#99f">HSOn (14)</td> <td style="background:#999">Ground </td> </tr> <tr> <th>25 </th> <td style="background:#999">Ground</td> <td style="background:#f9f">HSIp (2)</td> <td rowspan="2" style="text-align:left;">通道2接收數據，+和− </td> <th>76 </th> <td style="background:#999">Ground</td> <td style="background:#f9f">HSIp (14)</td> <td rowspan="2" style="text-align:left;">通道14接收數據，+和− </td> </tr> <tr> <th>26 </th> <td style="background:#999">Ground</td> <td style="background:#f9f">HSIn (2) </td> <th>77 </th> <td style="background:#999">Ground</td> <td style="background:#f9f">HSIn (14) </td> </tr> <tr> <th>27 </th> <td style="background:#99f">HSOp (3)</td> <td style="background:#999">Ground</td> <td rowspan="2" style="text-align:left;">通道3傳輸數據，+和− </td> <th>78 </th> <td style="background:#99f">HSOp (15)</td> <td style="background:#999">Ground</td> <td rowspan="2" style="text-align:left;">通道15傳輸數據，+和− </td> </tr> <tr> <th>28 </th> <td style="background:#99f">HSOn (3)</td> <td style="background:#999">Ground </td> <th>79 </th> <td style="background:#99f">HSOn (15)</td> <td style="background:#999">Ground </td> </tr> <tr> <th>29 </th> <td style="background:#999">Ground</td> <td style="background:#f9f">HSIp (3)</td> <td rowspan="2" style="text-align:left;">通道3接收數據，+和− </td> <th>80 </th> <td style="background:#999">Ground</td> <td style="background:#f9f">HSIp (15)</td> <td rowspan="2" style="text-align:left;">通道15接收數據，+和− </td> </tr> <tr> <th>30 </th> <td style="background:#ff9">Reserved</td> <td style="background:#f9f">HSIn (3) </td> <th>81 </th> <td style="background:#9f9">PRSNT2#</td> <td style="background:#f9f">HSIn (15) </td> </tr> <tr> <th>31 </th> <td style="background:#9f9">PRSNT2#</td> <td style="background:#999">Ground</td> <td rowspan="2"> </td> <th>82 </th> <td style="background:#ff9">Reserved</td> <td style="background:#999">Ground</td> <td> </td> </tr> <tr> <th>32 </th> <td style="background:#999">Ground</td> <td style="background:#ff9">Reserved </td> </tr> <tr> <td colspan="4">PCI Express ×4卡於引腳32結束 </td> </tr> <tr> <th>33 </th> <td style="background:#99f">HSOp (4)</td> <td style="background:#ff9">Reserved</td> <td rowspan="2" style="text-align:left;">通道4傳輸數據，+和− </td> </tr> <tr> <th>34 </th> <td style="background:#99f">HSOn (4)</td> <td style="background:#999">Ground </td> </tr> <tr> <th>35 </th> <td style="background:#999">Ground</td> <td style="background:#f9f">HSIp (4)</td> <td rowspan="2" style="text-align:left;">通道4接收數據，+和− </td> </tr> <tr> <th>36 </th> <td style="background:#999">Ground</td> <td style="background:#f9f">HSIn (4) </td> </tr> <tr> <th>37 </th> <td style="background:#99f">HSOp (5)</td> <td style="background:#999">Ground</td> <td rowspan="2" style="text-align:left;">通道5傳輸數據，+和− </td> </tr> <tr> <th>38 </th> <td style="background:#99f">HSOn (5)</td> <td style="background:#999">Ground </td> </tr> <tr> <th>39 </th> <td style="background:#999">Ground</td> <td style="background:#f9f">HSIp (5)</td> <td rowspan="2" style="text-align:left;">通道5接收數據，+和− </td> </tr> <tr> <th>40 </th> <td style="background:#999">Ground</td> <td style="background:#f9f">HSIn (5) </td> </tr> <tr> <th>41 </th> <td style="background:#99f">HSOp (6)</td> <td style="background:#999">Ground</td> <td rowspan="2" style="text-align:left;">通道6傳輸數據，+和− </td> </tr> <tr> <th>42 </th> <td style="background:#99f">HSOn (6)</td> <td style="background:#999">Ground </td> </tr> <tr> <th>43 </th> <td style="background:#999">Ground</td> <td style="background:#f9f">HSIp (6)</td> <td rowspan="2" style="text-align:left;">通道6接收數據，+和− </td> <th colspan="4">圖例 </th> </tr> <tr> <th>44 </th> <td style="background:#999">Ground</td> <td style="background:#f9f">HSIn (6) </td> <th style="background:#999" colspan="2">接地引腳 </th> <td colspan="2" style="text-align:left;">零電壓基準 </td> </tr> <tr> <th>45 </th> <td style="background:#99f">HSOp (7)</td> <td style="background:#999">Ground</td> <td rowspan="2" style="text-align:left;">通道7傳輸數據，+和− </td> <th style="background:silver" colspan="2">電源引腳 </th> <td colspan="2" style="text-align:left;">為PCIe卡供電 </td> </tr> <tr> <th>46 </th> <td style="background:#99f">HSOn (7)</td> <td style="background:#999">Ground </td> <th style="background:#f9f" colspan="2">輸出引腳 </th> <td colspan="2" style="text-align:left;">從PCIe卡到主板的信號 </td> </tr> <tr> <th>47 </th> <td style="background:#999">Ground</td> <td style="background:#f9f">HSIp (7)</td> <td rowspan="2" style="text-align:left;">通道7接收數據，+和− </td> <th style="background:#99f" colspan="2">輸入引腳 </th> <td colspan="2" style="text-align:left;">從主板到PCIe卡的信號 </td> </tr> <tr> <th>48 </th> <td style="background:#9f9">PRSNT2#</td> <td style="background:#f9f">HSIn (7) </td> <th style="background:#fc6" colspan="2">漏極開路 </th> <td colspan="2" style="text-align:left;">可拉至低電平或感應到多個卡 </td> </tr> <tr> <th>49 </th> <td style="background:#999">Ground</td> <td style="background:#999">Ground</td> <td> </td> <th style="background:#9f9" colspan="2">檢測引腳 </th> <td colspan="2" style="text-align:left;">卡連接在一起 </td> </tr> <tr> <td colspan="4">PCI Express ×8卡於引腳49結束 </td> <th style="background:#ff9" colspan="2">備用 </th> <td colspan="2" style="text-align:left;">目前沒有使用，不連接 </td> </tr> </tbody> </table>