https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forumzh-CNTelligent Community 13Tue, 04 Aug 2026 04:30:59 GMThttps://e2echina.ti.com/thread/1086779?ContentTypeID=0Tue, 28 Jul 2026 01:47:49 GMT91561404-af28-475a-b96b-cb6cbaadd097:f3be8315-6ba0-45d3-a637-d9e6a66b12e8user13911089https://e2echina.ti.com/thread/1086779?ContentTypeID=0https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1086779/cdclvc1310-cdclvc1310/rss?ContentTypeId=0<p><b>Part Number:</b> CDCLVC1310</p><p>cdclvc1310的11、12脚接20M晶体使用时，晶体无法起振，是什么原因？电路图及晶体规格书见下面的图，晶体的Rr小于等于50欧姆。</p> <p><img src="https://e2echina.ti.com/cfs-file/__key/communityserver-discussions-components-files/124/0083.image.png" alt="image.png" data-temp-id="image.png-246944" /></p> <p><img src="https://e2echina.ti.com/cfs-file/__key/communityserver-discussions-components-files/124/35034.image.png" alt="image.png" data-temp-id="image.png-225689" /></p>https://e2echina.ti.com/thread/3914178?ContentTypeID=1Tue, 04 Aug 2026 04:30:59 GMT91561404-af28-475a-b96b-cb6cbaadd097:19c94251-5fdf-4dd0-9555-578bb5cb7416FRANK10https://e2echina.ti.com/thread/3914178?ContentTypeID=1https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1086779/cdclvc1310-cdclvc1310/rss?ContentTypeId=0<p>我手头没有硬件测量条件，如果更换晶振后还是不行的吧，建议你按照我之前的建议，看看我们评估板的设计资料，比较排查下。电路和PCB布局并不复杂。</p><div style="clear:both;"></div>https://e2echina.ti.com/thread/3914176?ContentTypeID=1Tue, 04 Aug 2026 03:59:44 GMT91561404-af28-475a-b96b-cb6cbaadd097:6a130f6f-1a1b-4479-800c-9b9e9034cbefAlice3https://e2echina.ti.com/thread/3914176?ContentTypeID=1https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1087488/lmx1205-lmx1205/rss?ContentTypeId=0<p>您好，</p> <p>已经收到了您的案例，调查需要些时间，感谢您的耐心等待。</p><div style="clear:both;"></div>https://e2echina.ti.com/thread/1087488?ContentTypeID=0Tue, 04 Aug 2026 02:23:04 GMT91561404-af28-475a-b96b-cb6cbaadd097:5bb71510-1e96-444c-b1cf-76b8c4f7035a?? ?1https://e2echina.ti.com/thread/1087488?ContentTypeID=0https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1087488/lmx1205-lmx1205/rss?ContentTypeId=0<p><b>Part Number:</b> LMX1205</p><p>你好，我在使用LMX1205芯片时遇到一些问题，我们没有使用评估板，使用的单独的芯片，通过SPI来控制,我按以下步骤初始化芯片，没有输出我需要的频率，但寄存器回读是我写进去的值。是否有什么特殊的寄存器需要配置？或者特殊的写入顺序？<br />以下是我的配置步骤：<br />1：上电后软件复位：&nbsp; &nbsp; <br />LMX1205_Write_Registers(0x00,0x0001);<br />Delay_us(5000);<br />LMX1205_Write_Registers(0x00,0x0000);<br />Delay_us(5000);<br />2：降序写入寄存器表，该表由TICS_PRO软件生成：</p> <p>0x4D0000,<br />0x370000,<br />0x360000,<br />0x2D2ABF,<br />0x2C7707,<br />0x2B7707,<br />0x2A76F3,<br />0x2978F3,<br />0x2878E1,<br />0x2778E1,<br />0x250000,<br />0x248947,<br />0x200000,<br />0x1F0000,<br />0x1E0000,<br />0x1D0000,<br />0x1B661A,<br />0x1A00D0,<br />0x1901FF,<br />0x1801FF,<br />0x1701FF,<br />0x1601FF,<br />0x1501FF,<br />0x14C051,<br />0x130004,<br />0x120000,<br />0x110004,<br />0x100030,<br />0x0F0001,<br />0x0E00C9,<br />0x0D002B,<br />0x0C002B,<br />0x0B5CA9,<br />0x0A5CA9,<br />0x095CA9,<br />0x085CA9,<br />0x07000D,<br />0x06000D,<br />0x05000D,<br />0x04000D,<br />0x030000,<br />0x0201FF,<br />0x01001B,<br />0x000000</p> <p>3：写入寄存器（ DEV_IOPT_CTRL字段）：0x370006<br />以下是我的软件配置：<br /><img src="https://e2echina.ti.com/cfs-file/__key/communityserver-discussions-components-files/124/6735.image.png" alt="image.png" width="912" height="703" data-temp-id="image.png-875298" /></p>https://e2echina.ti.com/thread/1087045?ContentTypeID=0Wed, 29 Jul 2026 07:34:05 GMT91561404-af28-475a-b96b-cb6cbaadd097:968d6cbc-78ff-442e-a993-d1bbd55aaebeuser13593493https://e2echina.ti.com/thread/1087045?ContentTypeID=0https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1087045/cdclvd1216-cdclvd1216/rss?ContentTypeId=0<p><b>Part Number:</b> CDCLVD1216</p><p>TI的专家你好</p> <p>请问CDCLVD1216 这个芯片，<br />1：如果输入信号是有源（3.3V）差分晶振提供的156.25M的LVPECL时钟，下图这个电子必须串接75R的吗，串接22R可以吗，如果串接22R，会导致什么后果？<br />2：下图2中，圈出来的地方，设计是否正确<br />请帮忙看看，谢谢</p> <p>&nbsp;</p> <p><br /><img src="https://e2echina.ti.com/cfs-file/__key/communityserver-discussions-components-files/124/6014.image.png" alt="image.png" data-temp-id="image.png-46833" />x<br /><img src="https://e2echina.ti.com/cfs-file/__key/communityserver-discussions-components-files/124/0638.image.png" alt="image.png" data-temp-id="image.png-285442" /><br /><br /></p>https://e2echina.ti.com/thread/3914027?ContentTypeID=1Mon, 03 Aug 2026 02:51:08 GMT91561404-af28-475a-b96b-cb6cbaadd097:47d5b4f5-e47a-4250-b75f-ac882937731fuser13593490https://e2echina.ti.com/thread/3914027?ContentTypeID=1https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1087045/cdclvd1216-cdclvd1216/rss?ContentTypeId=0<p>非常感谢您的回复</p><div style="clear:both;"></div>https://e2echina.ti.com/thread/3913532?ContentTypeID=1Fri, 31 Jul 2026 08:03:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:16a859dd-12eb-473e-b386-129a57c82255user13911081https://e2echina.ti.com/thread/3913532?ContentTypeID=1https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1086779/cdclvc1310-cdclvc1310/rss?ContentTypeId=0<p>20M晶振上电后测量XIN和Y0波形如下，第一通道XIN，第二通道Y0</p> <p><img style="max-height:240px;max-width:320px;" src="https://e2echina.ti.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/124/pastedimage1785483979258v1.jpeg" alt=" " /></p> <p>用示波器探头点住XIN对地电容的XIN端，输出能测量到20M时钟，波形如下：</p> <p><img style="max-height:240px;max-width:320px;" src="https://e2echina.ti.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/124/pastedimage1785484805842v4.jpeg" alt=" " /></p> <p>示波器规格如下</p> <p><img style="max-height:240px;max-width:320px;" src="https://e2echina.ti.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/124/pastedimage1785484759863v2.jpeg" alt=" " /></p><div style="clear:both;"></div>https://e2echina.ti.com/thread/3913528?ContentTypeID=1Fri, 31 Jul 2026 07:52:30 GMT91561404-af28-475a-b96b-cb6cbaadd097:3c5073d8-37cf-45af-a4f5-76684953ce7aFRANK10https://e2echina.ti.com/thread/3913528?ContentTypeID=1https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1086779/cdclvc1310-cdclvc1310/rss?ContentTypeId=0<p>手里没硬件调试， datasheet范围是8~50MHz。</p> <p><img style="max-height:240px;max-width:320px;" src="https://e2echina.ti.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/124/pastedimage1785484328008v1.png" alt=" " /></p><div style="clear:both;"></div>https://e2echina.ti.com/thread/3913527?ContentTypeID=1Fri, 31 Jul 2026 07:49:37 GMT91561404-af28-475a-b96b-cb6cbaadd097:d157170b-7a3f-4b42-8c75-5776d6e987eaFRANK10https://e2echina.ti.com/thread/3913527?ContentTypeID=1https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1086779/cdclvc1310-cdclvc1310/rss?ContentTypeId=0<p>手里没硬件调试， datasheet范围是</p><div style="clear:both;"></div>https://e2echina.ti.com/thread/3913471?ContentTypeID=1Fri, 31 Jul 2026 02:06:12 GMT91561404-af28-475a-b96b-cb6cbaadd097:fb82bed1-fbeb-42ab-9ca5-465d45dde1bbAlice0https://e2echina.ti.com/thread/3913471?ContentTypeID=1https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1087270/lmk04832-lmk04832-spi/rss?ContentTypeId=0<p>您好，</p> <p>&nbsp; &nbsp; &nbsp;电平转换芯片支持三线SPI的SDIO的双向通讯吗？</p> <p>&nbsp; &nbsp; &nbsp;链接帖子也同样使用了<span>NLSX5014，是贵司的案例吗？请参考此贴内的回复</span></p> <p>&nbsp; &nbsp; &nbsp;&nbsp;<a href="https://e2e.ti.com/support/clock-timing-group/clock-and-timing/f/clock-timing-forum/1669118/lmk04832-lmk04832-spi-interface-cannot-read-back-data?tisearch=e2e-sitesearch&amp;keymatch=LMK04832%20SPI">LMK04832: LMK04832 SPI interface cannot read back data - Clock &amp; timing forum - Clock &amp; timing - TI E2E support forums</a></p><div style="clear:both;"></div>https://e2echina.ti.com/thread/1087270?ContentTypeID=0Thu, 30 Jul 2026 12:22:29 GMT91561404-af28-475a-b96b-cb6cbaadd097:f7dec22e-32a6-4488-b109-b57e91e9dd90SHUNDA ZHONG2https://e2echina.ti.com/thread/1087270?ContentTypeID=0https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1087270/lmk04832-lmk04832-spi/rss?ContentTypeId=0<p><b>Part Number:</b> LMK04832</p><p>您好：</p> <p>FPGA芯片（IO为1.2V）经过电平转换芯片（NLSX5014MUTAG）后由三线SPI配置加载LMK04832（3.3V供电），LMK04832可以正常加载且时钟也正常输出，但是三线SPI却无法回读LMK04832信息，请问是什么原因呢？</p> <p><img src="https://e2echina.ti.com/cfs-file/__key/communityserver-discussions-components-files/124/_014F1A4EAE5FE14F2A62FE565F00_17854139868941.png" width="595" height="325" alt=" " /></p> <p><img src="https://e2echina.ti.com/cfs-file/__key/communityserver-discussions-components-files/124/_014F1A4EAE5FE14F2A62FE565F00_17854139304996.png" width="496" height="203" alt=" " /></p> <p><img src="https://e2echina.ti.com/cfs-file/__key/communityserver-discussions-components-files/124/_014F1A4EAE5FE14F2A62FE565F00_17854141259748.png" width="591" height="179" alt=" " /></p> <p>&nbsp;</p> <p>&nbsp;</p>https://e2echina.ti.com/thread/3913464?ContentTypeID=1Fri, 31 Jul 2026 01:03:55 GMT91561404-af28-475a-b96b-cb6cbaadd097:62f0d442-5e40-4211-b58e-cc74b515f02fVivian Gao0https://e2echina.ti.com/thread/3913464?ContentTypeID=1https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1087250/lmx2594evm-rf-output-impdedance/rss?ContentTypeId=0<p>Refer to datasheet</p> <p><img style="max-height:240px;max-width:320px;" src="https://e2echina.ti.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/124/pastedimage1785459831215v1.png" alt=" " /></p><div style="clear:both;"></div>https://e2echina.ti.com/thread/1087250?ContentTypeID=0Thu, 30 Jul 2026 07:47:51 GMT91561404-af28-475a-b96b-cb6cbaadd097:cc5dea4e-9848-44a7-9bca-8064751ab310Jifei Chen2https://e2echina.ti.com/thread/1087250?ContentTypeID=0https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1087250/lmx2594evm-rf-output-impdedance/rss?ContentTypeId=0<p><b>Part Number:</b> LMX2594EVM</p><p>Hello,</p> <p>One month ago, I asked one tech issue about LMX2594 chip RF output power.</p> <p>Today, I have another tech issue during design the circuits according to the schematic of LMX2594 EVB board.</p> <p>What&#39;s the RF output impedance of LMX2594 eval board?</p> <p>thanks,</p> <p>Jifei</p>https://e2echina.ti.com/thread/3913454?ContentTypeID=1Thu, 30 Jul 2026 23:24:32 GMT91561404-af28-475a-b96b-cb6cbaadd097:4c80eba9-d5a4-4448-a73f-cc7911799d43Lydia1https://e2echina.ti.com/thread/3913454?ContentTypeID=1https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1087270/lmk04832-lmk04832-spi/rss?ContentTypeId=0<p style="font-size:11.0pt;margin:0in;"><span style="font-family:&#39;MS Gothic&#39;;" lang="zh-CN">您好，</span><span style="font-family:&#39;MS Gothic&#39;;" lang="en-US">已</span><span style="font-family:&#39;Microsoft YaHei&#39;;" lang="en-US">经</span><span style="font-family:&#39;MS Gothic&#39;;" lang="en-US">收到了您的案例，</span><span style="font-family:&#39;Microsoft YaHei&#39;;" lang="en-US">调查</span><span style="font-family:&#39;MS Gothic&#39;;" lang="en-US">需要些</span><span style="font-family:&#39;Microsoft YaHei&#39;;" lang="en-US">时间</span><span style="font-family:&#39;MS Gothic&#39;;" lang="en-US">，感</span><span style="font-family:&#39;Microsoft YaHei&#39;;" lang="en-US">谢</span><span style="font-family:&#39;MS Gothic&#39;;" lang="en-US">您的耐心等待。</span></p><div style="clear:both;"></div>https://e2echina.ti.com/thread/3913431?ContentTypeID=1Thu, 30 Jul 2026 07:51:50 GMT91561404-af28-475a-b96b-cb6cbaadd097:fb91718f-ed57-4bbd-a6da-2686e511c0b9Vivian Gao1https://e2echina.ti.com/thread/3913431?ContentTypeID=1https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1087250/lmx2594evm-rf-output-impdedance/rss?ContentTypeId=0<p>Thank you for your attention to TI products. We are verifying your issue, please wait for our reply.</p><div style="clear:both;"></div>https://e2echina.ti.com/thread/1084301?ContentTypeID=0Tue, 14 Jul 2026 01:45:11 GMT91561404-af28-475a-b96b-cb6cbaadd097:9a5ccd5c-a8ea-46a8-9345-dab939507313Jifei Chen3https://e2echina.ti.com/thread/1084301?ContentTypeID=0https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1084301/lmx2594-what-s-the-power-output-for-915mhz/rss?ContentTypeId=0<p><b>Part Number:</b> LMX2594</p><p data-report-tagid="p-37-td-p-p-0">Hello!</p> <p data-report-tagid="p-38-td-p-p-0">Via register configration, LMX2594 Differential RF output frequency is 915MHz, the RF output RFoutAM/RFoutAP are <strong>only pulluped 50R connected to VccRF</strong> in my HW circuits.</p> <p data-report-tagid="p-38-td-p-p-0">what&#39;s the power ouput like this HW configuration?</p> <p data-report-tagid="p-41-td-p-p-0">thanks!</p> <p data-report-tagid="p-42-td-p-p-0">Chen</p>https://e2echina.ti.com/thread/3913430?ContentTypeID=1Thu, 30 Jul 2026 07:31:45 GMT91561404-af28-475a-b96b-cb6cbaadd097:095fefdd-e046-4e79-bbc3-b8db04fc7c39Lydia0https://e2echina.ti.com/thread/3913430?ContentTypeID=1https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1084301/lmx2594-what-s-the-power-output-for-915mhz/rss?ContentTypeId=0<p>Hi，</p> <p>For follow-up questions, you can continue to communicate with Noel Fung.</p><div style="clear:both;"></div>https://e2echina.ti.com/thread/3913429?ContentTypeID=1Thu, 30 Jul 2026 07:03:48 GMT91561404-af28-475a-b96b-cb6cbaadd097:d72e916b-c021-4ff8-bfae-d7913b747fbcJifei Chen1https://e2echina.ti.com/thread/3913429?ContentTypeID=1https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1084301/lmx2594-what-s-the-power-output-for-915mhz/rss?ContentTypeId=0<p>hello，</p> <p>could you help to ask another tech issue as the below shown:</p> <p>what is the output impedance of RF output on the LMX2594 EVB board schematic?&nbsp;</p> <p>thanks,</p> <p>Jifei Chen&nbsp;</p><div style="clear:both;"></div>https://e2echina.ti.com/thread/3913425?ContentTypeID=1Thu, 30 Jul 2026 06:33:57 GMT91561404-af28-475a-b96b-cb6cbaadd097:4657e7d4-c8f4-4fd3-8e5f-a6ab6e0c7c31user13911082https://e2echina.ti.com/thread/3913425?ContentTypeID=1https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1086779/cdclvc1310-cdclvc1310/rss?ContentTypeId=0<p><span>你们有试过20M晶体吗？是否可以起振？我们换了48M晶体能起振，但20M不行。</span></p><div style="clear:both;"></div>https://e2echina.ti.com/thread/3913414?ContentTypeID=1Thu, 30 Jul 2026 04:27:50 GMT91561404-af28-475a-b96b-cb6cbaadd097:4514766d-d8b5-43f4-8e02-955d79b35cbaVivian Gao0https://e2echina.ti.com/thread/3913414?ContentTypeID=1https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1087045/cdclvd1216-cdclvd1216/rss?ContentTypeId=0<p>1. 不建议，建议您按照手册来做。如果过小可能导致反射大，过驱。</p> <p>2.&nbsp; 您的INP0和VAC_REF0应该按照您的截图里面的Figure 17电路结构去设计。</p> <p>&nbsp; &nbsp; &nbsp; INP1如果不用，接1k下拉符合要求。</p> <p><a href="https://e2e.ti.com/support/clock-timing-group/clock-and-timing/f/clock-timing-forum/170812/cdclvd1208-unused-n-inputs/624066">e2e.ti.com/.../624066</a></p> <p>&nbsp; &nbsp; &nbsp; &nbsp;<span>VAC_REF1如果不用，见下方链接的接法。</span></p> <p><span><a href="https://e2e.ti.com/support/clock-timing-group/clock-and-timing/f/clock-timing-forum/972402/cdclvd1216-what-to-do-with-vac_ref0-1-when-not-used?tisearch=e2e-sitesearch&amp;keymatch=CDCLVD1216">CDCLVD1216: what to do with VAC_REF0/1 when not used? - Clock &amp; timing forum - Clock &amp; timing - TI E2E support forums</a></span></p><div style="clear:both;"></div>https://e2echina.ti.com/thread/3913412?ContentTypeID=1Thu, 30 Jul 2026 04:18:25 GMT91561404-af28-475a-b96b-cb6cbaadd097:cfb6ff58-d95d-439b-a46b-04fb70754656FRANK12https://e2echina.ti.com/thread/3913412?ContentTypeID=1https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1086779/cdclvc1310-cdclvc1310/rss?ContentTypeId=0<p>如果你换了推荐的晶振也不好用，那再查查电路，走线， 你看看我给你的我们评估板的电路。排查下。</p><div style="clear:both;"></div>https://e2echina.ti.com/thread/3912640?ContentTypeID=1Wed, 29 Jul 2026 07:42:42 GMT91561404-af28-475a-b96b-cb6cbaadd097:85f693d6-5a5b-476d-80d4-c11f5913e47eVivian Gao1https://e2echina.ti.com/thread/3912640?ContentTypeID=1https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1087045/cdclvd1216-cdclvd1216/rss?ContentTypeId=0<p>感谢您对TI产品的关注。<br />我们正在核实您的问题，请等待我们的答复。</p><div style="clear:both;"></div>https://e2echina.ti.com/thread/3912636?ContentTypeID=1Wed, 29 Jul 2026 07:31:41 GMT91561404-af28-475a-b96b-cb6cbaadd097:4e99f0c4-8d00-4489-b4b1-a2c844fc1539user13911081https://e2echina.ti.com/thread/3912636?ContentTypeID=1https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1086779/cdclvc1310-cdclvc1310/rss?ContentTypeId=0<p>按照这个report更换了晶体，还是无法起振，晶体输入输出的波形如下，能否分析一下故障原因。</p> <p><img style="max-height:240px;max-width:320px;" src="https://e2echina.ti.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/124/pastedimage1785310283313v3.jpeg" alt=" " /><img style="max-height:240px;max-width:320px;" src="https://e2echina.ti.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/124/pastedimage1785310293812v4.jpeg" alt=" " /></p><div style="clear:both;"></div>https://e2echina.ti.com/thread/3912602?ContentTypeID=1Wed, 29 Jul 2026 00:27:37 GMT91561404-af28-475a-b96b-cb6cbaadd097:0b117637-c014-4560-89ce-55d3f4a89820FRANK11https://e2echina.ti.com/thread/3912602?ContentTypeID=1https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1086779/cdclvc1310-cdclvc1310/rss?ContentTypeId=0<p>你可以看看CDCLVC1310晶振的选型application report，</p> <p>CrystalOscillatorPerformanceoftheCDCLVC1310<br /><a href="https://www.ti.com/lit/an/scaa119/scaa119.pdf?ts=1785203514906">https://www.ti.com/lit/an/scaa119/scaa119.pdf?ts=1785203514906</a></p> <p>另外，你也可以看看我们评估版选择的晶振和设计电路，在下面链接文件的末尾有BOM和电路图。</p> <p><a href="https://www.ti.com.cn/cn/lit/ug/scau046/scau046.pdf?ts=1785203409639&amp;ref_url=https%253A%252F%252Fwww.ti.com.cn%252Fproduct%252Fcn%252FCDCLVC1310">www.ti.com.cn/.../scau046.pdf</a></p><div style="clear:both;"></div>https://e2echina.ti.com/thread/1086781?ContentTypeID=0Tue, 28 Jul 2026 02:11:23 GMT91561404-af28-475a-b96b-cb6cbaadd097:ac3de7de-d907-4362-9f48-822666c86958Xu Allen2https://e2echina.ti.com/thread/1086781?ContentTypeID=0https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1086781/cdclvp1204-cdclvp1204rgtr-vacref/rss?ContentTypeId=0<p><b>Part Number:</b> CDCLVP1204</p><p>你好，&nbsp; &nbsp;&nbsp;</p> <p>&nbsp; &nbsp; &nbsp;请问一下，CDCLVP1204RGTR输入差分时钟信号是直流耦合、VCC=3.3V情况下，VACREF引脚的处理能否悬空？若不能，请问推荐如何处理？</p> <p><img src="https://e2echina.ti.com/cfs-file/__key/communityserver-discussions-components-files/124/1104.JPG" alt="1.JPG" data-temp-id="1.JPG-18123" /></p>