https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forumzh-CNTelligent Community 13Wed, 11 Nov 2026 01:28:19 GMThttps://e2echina.ti.com/thread/1102220?ContentTypeID=0Tue, 10 Nov 2026 10:04:23 GMT91561404-af28-475a-b96b-cb6cbaadd097:cd310dbd-5a16-45b7-abf4-b9da7159f2cfao langsen1https://e2echina.ti.com/thread/1102220?ContentTypeID=0https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1102220/lmk03328evm/rss?ContentTypeId=0<p><b>Part Number:</b> LMK03328EVM</p><p>无法输出对应射频信号</p>https://e2echina.ti.com/thread/3965675?ContentTypeID=1Wed, 11 Nov 2026 01:28:19 GMT91561404-af28-475a-b96b-cb6cbaadd097:817f5641-3648-465c-a040-722ed1031e99Eric Ba0https://e2echina.ti.com/thread/3965675?ContentTypeID=1https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1102220/lmk03328evm/rss?ContentTypeId=0<p><span>已经收到了您的案例，调查需要些时间，感谢您的耐心等待。</span></p><div style="clear:both;"></div>https://e2echina.ti.com/thread/1101978?ContentTypeID=0Thu, 05 Nov 2026 12:26:39 GMT91561404-af28-475a-b96b-cb6cbaadd097:6669c7c6-73df-4c85-89e2-843a4096a826lsp cs4https://e2echina.ti.com/thread/1101978?ContentTypeID=0https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1101978/lmx2572-lmx2572/rss?ContentTypeId=0<p><b>Part Number:</b> LMX2572</p><p>你好!<br />我在使用LMX2572频率综合器的时候发现随着频率升高&nbsp; 输出功率会大幅衰减 在低频的时候可以获得8dbm的输出功率(接近手册),但是在频率升高后 3Ghz 5dbm&nbsp; 4Ghz左右1-2dbm&nbsp; 6Ghz&nbsp; -6dbm<br />功率码63(设<img style="float:left;" src="https://e2echina.ti.com/cfs-file/__key/communityserver-discussions-components-files/124/6607.image.png" alt="image.png" width="533" height="373" data-temp-id="image.png-103316" />置最大)<br />测试功率计有10dB衰减器 测得的频率/功率曲线已经附上 请看橙色曲线<br /><br />衰减有可能是我的PCB板材导致的吗?原理图设计按照数据手册/参考设计<br /><img style="float:left;" src="https://e2echina.ti.com/cfs-file/__key/communityserver-discussions-components-files/124/frequency_5F00_power.png" alt="frequency_power.png" width="551" height="254" data-temp-id="frequency_power.png-124877" /></p>https://e2echina.ti.com/thread/3965642?ContentTypeID=1Mon, 09 Nov 2026 08:09:54 GMT91561404-af28-475a-b96b-cb6cbaadd097:3f526259-5703-41a2-864f-238ff7150302FRANK10https://e2echina.ti.com/thread/3965642?ContentTypeID=1https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1101978/lmx2572-lmx2572/rss?ContentTypeId=0<p>你这个随着频率升高，衰减很大，肯定是匹配不佳导致的。</p><div style="clear:both;"></div>https://e2echina.ti.com/thread/3965037?ContentTypeID=1Fri, 06 Nov 2026 08:39:23 GMT91561404-af28-475a-b96b-cb6cbaadd097:22c3255f-de54-4e0a-815f-3b02e5f30c33lsp cs1https://e2echina.ti.com/thread/3965037?ContentTypeID=1https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1101978/lmx2572-lmx2572/rss?ContentTypeId=0<p>手册上展示的6.4Ghz输出6dBm怎么样才能做到呢<br />我的才输出-8dBm&nbsp; 匹配不佳不会导致快15dB的衰减吧?</p><div style="clear:both;"></div>https://e2echina.ti.com/thread/3965034?ContentTypeID=1Fri, 06 Nov 2026 06:44:06 GMT91561404-af28-475a-b96b-cb6cbaadd097:8f618fe7-f581-4c93-90a4-c867c241200aFRANK11https://e2echina.ti.com/thread/3965034?ContentTypeID=1https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1101978/lmx2572-lmx2572/rss?ContentTypeId=0<p>从datasheet上看，这种衰减在很大程度上是器件本身固有的, 而不是PCB设计故障</p> <p>但您的PCB/匹配网络会使其更糟或更好。&nbsp;</p> <p>随时频率增大，衰减会明显增大，而不是平滑曲线。</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/pastedimage1793947414057v1.png" alt=" " /></p><div style="clear:both;"></div>https://e2echina.ti.com/thread/3965026?ContentTypeID=1Thu, 05 Nov 2026 23:21:43 GMT91561404-af28-475a-b96b-cb6cbaadd097:efa30d17-17d5-4e52-a7f9-50f5f3dad82dAlice0https://e2echina.ti.com/thread/3965026?ContentTypeID=1https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1101978/lmx2572-lmx2572/rss?ContentTypeId=0<p>您好，<br /> 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/3965024?ContentTypeID=1Thu, 05 Nov 2026 11:28:46 GMT91561404-af28-475a-b96b-cb6cbaadd097:8dcf16d0-5f62-43e1-9a3a-871c7d976833Eric Ba0https://e2echina.ti.com/thread/3965024?ContentTypeID=1https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1101971/lmx2582/rss?ContentTypeId=0<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/1101971?ContentTypeID=0Thu, 05 Nov 2026 05:41:56 GMT91561404-af28-475a-b96b-cb6cbaadd097:769505b1-9457-4c36-bdf8-4a2cdf882d71Hao Zhou ZHou1https://e2echina.ti.com/thread/1101971?ContentTypeID=0https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1101971/lmx2582/rss?ContentTypeId=0<p><b>Part Number:</b> LMX2582</p><p>1.有没有软件方面的，例如上电后，怎么配置各个寄存器，怎么检测时钟是否锁定，怎么设置频点，这些代码参考</p> <p>2.目前调试，参考输入都正常，但是没有输出，读68寄存器，值0x148，好像也没锁定</p>https://e2echina.ti.com/thread/3964979?ContentTypeID=1Wed, 04 Nov 2026 06:04:27 GMT91561404-af28-475a-b96b-cb6cbaadd097:fc30e515-6579-49be-a185-7c70d2b64c28Eric Ba0https://e2echina.ti.com/thread/3964979?ContentTypeID=1https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1101919/lmk04832-5-lmk08432-sysref/rss?ContentTypeId=0<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/1101919?ContentTypeID=0Wed, 04 Nov 2026 00:54:10 GMT91561404-af28-475a-b96b-cb6cbaadd097:ebf161be-e78a-425f-a581-a83d9e4c9837SHUNDA ZHONG1https://e2echina.ti.com/thread/1101919?ContentTypeID=0https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1101919/lmk04832-5-lmk08432-sysref/rss?ContentTypeId=0<p><b>Part Number:</b> LMK04832</p><p>您好：</p> <p>系统有5片LMK04832，其中4片LMK04832提供SysRef给采集卡ADC和ASIC，1片LMK04832的SysRef给汇聚卡的ASIC，协议204C，我想让外部提供的三路SYNC经过MUX或者Buffer（要求output skew尽量小且固定）选择1路分别给到5片LMK04832的SYNC管脚，实现5片LMK04832的SysRef同步，是否可行呢？是否有对应的MUx或Buffer提供？或者是否更好的同步实现方案呢？</p> <p>祝好！</p>https://e2echina.ti.com/thread/1099921?ContentTypeID=0Thu, 22 Oct 2026 03:00:37 GMT91561404-af28-475a-b96b-cb6cbaadd097:69ff7873-22ad-4677-ad76-ff5f526d1bb7Chance Zhan2https://e2echina.ti.com/thread/1099921?ContentTypeID=0https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1099921/lmkdb1104-selection-assistance-consultation/rss?ContentTypeId=0<p><b>Part Number:</b> LMKDB1104</p><p><span style="font-family:arial, helvetica, sans-serif;">This is the request from customer. I&#39;am not sure which one completely suit for the consultation. Could you please help me recommand one?</span></p> <table style="width:842.8px;"> <thead> <tr> <th><span style="font-family:arial, helvetica, sans-serif;">Item</span></th> <th><span style="font-family:arial, helvetica, sans-serif;">Description</span></th> </tr> </thead> <tbody> <tr> <td><span style="font-family:arial, helvetica, sans-serif;"><strong>Preferred Part Number &amp; Manufacturer</strong></span></td> <td><span style="font-family:arial, helvetica, sans-serif;">Comply with JESD82-531B specification</span></td> </tr> <tr> <td><span style="font-family:arial, helvetica, sans-serif;"><strong>Device Function</strong></span></td> <td><span style="font-family:arial, helvetica, sans-serif;">Clock driver; primary function is to buffer the clock between the Host Controller and DRAM</span></td> </tr> <tr> <td><span style="font-family:arial, helvetica, sans-serif;"><strong>Supply Voltage (VDD)</strong></span></td> <td><span style="font-family:arial, helvetica, sans-serif;">1.1V</span></td> </tr> <tr> <td><span style="font-family:arial, helvetica, sans-serif;"><strong>Input Frequency Range</strong></span></td> <td><span style="font-family:arial, helvetica, sans-serif;">&ge; 4000 MHz</span></td> </tr> <tr> <td><span style="font-family:arial, helvetica, sans-serif;"><strong>Input Channel</strong></span></td> <td><span style="font-family:arial, helvetica, sans-serif;">4 sets of differential clock inputs</span></td> </tr> <tr> <td><span style="font-family:arial, helvetica, sans-serif;"><strong>Output Frequency Range</strong></span></td> <td><span style="font-family:arial, helvetica, sans-serif;">&ge; 4000 MHz</span></td> </tr> <tr> <td><span style="font-family:arial, helvetica, sans-serif;"><strong>Output Channel/Bank</strong></span></td> <td><span style="font-family:arial, helvetica, sans-serif;">4 sets of differential clock outputs</span></td> </tr> <tr> <td><span style="font-family:arial, helvetica, sans-serif;"><strong>Jitter</strong></span></td> <td><span style="font-family:arial, helvetica, sans-serif;">Meet JESD82-531B specification</span></td> </tr> <tr> <td><span style="font-family:arial, helvetica, sans-serif;"><strong>Output-to-Output Skew</strong></span></td> <td><span style="font-family:arial, helvetica, sans-serif;">Max: 20ps (PLL mode)</span></td> </tr> <tr> <td><span style="font-family:arial, helvetica, sans-serif;"><strong>Programming Interface</strong></span></td> <td><span style="font-family:arial, helvetica, sans-serif;">I2C (Max 1 MHz) + I3C Basic (Max 12.5 MHz)</span></td> </tr> <tr> <td><span style="font-family:arial, helvetica, sans-serif;"><strong>Package Size</strong></span></td> <td><span style="font-family:arial, helvetica, sans-serif;">2.3mm * 5.8mm</span></td> </tr> <tr> <td><span style="font-family:arial, helvetica, sans-serif;"><strong>Clock Source</strong></span></td> <td><span style="font-family:arial, helvetica, sans-serif;">External differential clock</span></td> </tr> <tr> <td><span style="font-family:arial, helvetica, sans-serif;"><strong>Additional Requirements</strong></span></td> <td><span style="font-family:arial, helvetica, sans-serif;">AVL (Approved Vendor List) certification status</span></td> </tr> </tbody> </table> <table style="width:842.8px;"> <thead> <tr> <th><span style="font-family:arial, helvetica, sans-serif;">Item</span></th> <th><span style="font-family:arial, helvetica, sans-serif;">Description</span></th> </tr> </thead> <tbody> <tr> <td><span style="font-family:arial, helvetica, sans-serif;"><strong>Package Type ★</strong></span></td> <td><span style="font-family:arial, helvetica, sans-serif;">35-ball FPBGA</span></td> </tr> <tr> <td><span style="font-family:arial, helvetica, sans-serif;"><strong>Package Pitch</strong></span></td> <td><span style="font-family:arial, helvetica, sans-serif;">Package pitch &ge; 0.4mm</span></td> </tr> <tr> <td><span style="font-family:arial, helvetica, sans-serif;"><strong>Device Outline/Dimensions</strong></span></td> <td><span style="font-family:arial, helvetica, sans-serif;">2.3mm * 5.8mm</span></td> </tr> <tr> <td><span style="font-family:arial, helvetica, sans-serif;"><strong>Land Pattern/Pad Size</strong></span></td> <td><span style="font-family:arial, helvetica, sans-serif;">&phi;0.3mm</span></td> </tr> <tr> <td><span style="font-family:arial, helvetica, sans-serif;"><strong>Device Tolerance</strong></span></td> <td><span style="font-family:arial, helvetica, sans-serif;">N/A</span></td> </tr> <tr> <td><span style="font-family:arial, helvetica, sans-serif;"><strong>Packaging Method</strong></span></td> <td><span style="font-family:arial, helvetica, sans-serif;">Tape &amp; Reel preferred; Tray is acceptable for large sizes; Vibration tray packaging is prohibited</span></td> </tr> <tr> <td><span style="font-family:arial, helvetica, sans-serif;"><strong>Resistance to Solder Heat (RSH)</strong></span></td> <td><span style="font-family:arial, helvetica, sans-serif;">260&plusmn;5&deg;C, 10&plusmn;1s / 3 times</span></td> </tr> <tr> <td><span style="font-family:arial, helvetica, sans-serif;"><strong>Solderability(SD)</strong></span></td> <td><span style="font-family:arial, helvetica, sans-serif;">1. Precondition Condition C (8hrs)</span><br /><span style="font-family:arial, helvetica, sans-serif;">2. Temperature and time:</span><br /><span style="font-family:arial, helvetica, sans-serif;">SnPb: 235&plusmn;5&deg;C, 5&plusmn;0.5s</span><br /><span style="font-family:arial, helvetica, sans-serif;">Pb-free: 245&plusmn;5&deg;C, 5&plusmn;0.5s</span></td> </tr> </tbody> </table> <p>&nbsp;</p>https://e2echina.ti.com/thread/3959185?ContentTypeID=1Thu, 22 Oct 2026 13:04:30 GMT91561404-af28-475a-b96b-cb6cbaadd097:4f7dcf65-d7a7-44dd-bff4-d00cfd77615fLinks0https://e2echina.ti.com/thread/3959185?ContentTypeID=1https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1099921/lmkdb1104-selection-assistance-consultation/rss?ContentTypeId=0<div> <p>Hi</p> <p>The requested device is a JESD82-531B-compliant DDR5CKD01 Client Clock Driver rather than a general-purpose or PCIe clock buffer.</p> <p>LMKDB1104 is not suitable because it is a 1.8-V/3.3-V PCIe LP-HCSL buffer and does not support the required 1.1-V DDR5 CKD interface, I2C/I3C sideband control, or 35-ball 2.3-mm &times; 5.8-mm package.</p> <p>At present, we could not identify a public TI device that fully meets these requirements.&nbsp;</p> </div><div style="clear:both;"></div>https://e2echina.ti.com/thread/3958247?ContentTypeID=1Thu, 22 Oct 2026 03:03:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:dcfa9634-ffb3-4dc6-9a85-9194321ad3c3FRANK10https://e2echina.ti.com/thread/3958247?ContentTypeID=1https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1099921/lmkdb1104-selection-assistance-consultation/rss?ContentTypeId=0<p>感谢您对TI产品的关注！<br />关于你的咨询，我们正在确认您的问题，感谢您的耐心等待。</p><div style="clear:both;"></div>https://e2echina.ti.com/thread/1099607?ContentTypeID=0Tue, 20 Oct 2026 15:56:38 GMT91561404-af28-475a-b96b-cb6cbaadd097:35731110-bbb6-47ab-b3d5-2832724d9472tom tom1https://e2echina.ti.com/thread/1099607?ContentTypeID=0https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1099607/lmk1c1103a-pllatinumsim-sw-1-6-9-1/rss?ContentTypeId=0<p><b>Part Number:</b> LMK1C1103A</p><p>您好，</p> <p>我在下载 PLLatinum Sim 仿真工具（型号：PLLATINUMSIM-SW）最新版 1.6.9.1 时遇到问题：在官网下载页面点击 Setup_PLLatinumSim-1.6.9.1.exe 后，页面提示&ldquo;权限遭拒&mdash;&mdash;我们目前无法批准您的下载请求&rdquo;，无法完成下载。我的 myTI 账户信息（姓名、邮箱、国家/地区）均为真实填写。</p> <p>由于项目需要使用最新版本（1.6.9.1 修复了相位噪声曲线加载和杂散建模的问题），烦请工程师帮忙核查我的账户无法通过下载审批的原因，或直接将 Setup_PLLatinumSim-1.6.9.1.exe 以附件形式提供。</p> <p>非常感谢！</p>https://e2echina.ti.com/thread/3957167?ContentTypeID=1Tue, 20 Oct 2026 22:56:34 GMT91561404-af28-475a-b96b-cb6cbaadd097:52859fcf-7307-4ada-a21b-29555ca86bf7Alice0https://e2echina.ti.com/thread/3957167?ContentTypeID=1https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1099607/lmk1c1103a-pllatinumsim-sw-1-6-9-1/rss?ContentTypeId=0<p>您好，<br />&nbsp; &nbsp; 申请被拒问题，请联系<a href="https://www.ti.com/info/customer-support.html">客户支持中心</a>申诉。</p><div style="clear:both;"></div>https://e2echina.ti.com/thread/1098118?ContentTypeID=0Mon, 12 Oct 2026 10:31:38 GMT91561404-af28-475a-b96b-cb6cbaadd097:0e9c44d4-d949-4f44-95a5-918e75f1b469linli shi4https://e2echina.ti.com/thread/1098118?ContentTypeID=0https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1098118/cdce6214-q1-mode-selection-and-register-read-write-issues/rss?ContentTypeId=0<p><b>Part Number:</b> CDCE6214-Q1</p><p>Hello, I would like to consult about the use of CDCE6214. At present, I cannot realize the control of CDCE6214 chip. In detail: In order to bypass the reading and writing of eeprom, only the register set of the chip is written. At the same time, HW_SW_CTRL and REFSEL have been connected to the MCU on the hardware circuit, so the IO pins connected to the MCU are configured to high resistance state to realize the dangling state of HW_SW_CTRL and REFSEL. Let the chip enter the backoff mode. The voltage of the two pins measured by the multimeter is 1.6V, so it is confirmed that the state is M and the backoff mode has been entered. Then I used IIC to write the CDCE6214RGER register, but after a lot of tests, only a few registers were written correctly, and the values of the other registers were not the values I set. For example, the operation of first pulling PDN and then reading and writing register R43 can realize the reading and writing of the register, which shows the timing correctness of IIC, but when writing other registers, most of them have errors. In addition, the register group values (R0-R85) are obtained by TICSPRO software. Therefore, I would like to ask if there is anything else I have not considered. I hope to get a reply,thank you.<img src="https://e2echina.ti.com/cfs-file/__key/communityserver-discussions-components-files/124/4431.image.png" alt="image.png" data-temp-id="image.png-30348" /></p>https://e2echina.ti.com/thread/3957125?ContentTypeID=1Mon, 19 Oct 2026 14:24:34 GMT91561404-af28-475a-b96b-cb6cbaadd097:bdb7e7a3-01a8-43ec-ac3b-23e0ff24f3c2Alice0https://e2echina.ti.com/thread/3957125?ContentTypeID=1https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1098118/cdce6214-q1-mode-selection-and-register-read-write-issues/rss?ContentTypeId=0<p>您好，&nbsp;</p> [quote userid="168138" url="~/support/clock-and-timing/f/clock-timing-forum/1098118/cdce6214-q1-mode-selection-and-register-read-write-issues/3952122"]对于批量寄存器的读写顺序我也尝试过&nbsp;R85~ R0顺序的顺序，但是部分寄存器读出的结果依旧和我预期的设置值并不保持一致，但大部分都是正确的，[/quote] <p>SCL频率是100KHZ还是400KHZ？每个写入/读取帧之间增加延时呢？</p><div style="clear:both;"></div>https://e2echina.ti.com/thread/3952122?ContentTypeID=1Tue, 13 Oct 2026 09:25:13 GMT91561404-af28-475a-b96b-cb6cbaadd097:cd5a1516-92b9-4c9b-860a-1967e6b95e8alinli shi1https://e2echina.ti.com/thread/3952122?ContentTypeID=1https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1098118/cdce6214-q1-mode-selection-and-register-read-write-issues/rss?ContentTypeId=0<p><span>你好，我这边已经目前已经确定了该芯片是处于Fall-back模式，使用万用表对</span><span>HW_SW_CTRL 和REFSEL的引脚电压测量得到1.6V左右，处于M状态，目前IIC已经可以实现某特定寄存器的读写，例如R43，这很大程度上能够保证我的读写时序是正确的；对于批量寄存器的读写顺序我也尝试过&nbsp;R85~ R0顺序的顺序，但是部分寄存器读出的结果依旧和我预期的设置值并不保持一致，但大部分都是正确的，这就很奇怪，我在CDCE6214的相关帖子已翻阅过大部分，目前暂时无法得到解决我最终的目标，不写eeprom，直接写寄存器组来实现我所预期的输出</span></p><div style="clear:both;"></div>https://e2echina.ti.com/thread/3952116?ContentTypeID=1Tue, 13 Oct 2026 09:14:53 GMT91561404-af28-475a-b96b-cb6cbaadd097:e28acd35-42b7-43db-bd1a-b88e66909a5eAlice0https://e2echina.ti.com/thread/3952116?ContentTypeID=1https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1098117/cdce6214-q1/rss?ContentTypeId=0<p>您好，&nbsp; &nbsp;&nbsp;</p> <p>&nbsp; &nbsp; &nbsp;请在<a href="https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1098118/cdce6214-q1-mode-selection-and-register-read-write-issues">(+) CDCE6214-Q1: Mode selection and register read/write issues - 时钟和计时论坛 - 时钟和时序 - E2E<span class="emoticon" data-url="https://e2echina.ti.com/cfs-file/__key/system/emoji/2122.svg" title="Tm">&#x2122;</span>&nbsp;设计支持</a>&nbsp;查看回复。</p><div style="clear:both;"></div>https://e2echina.ti.com/thread/1098117?ContentTypeID=0Mon, 12 Oct 2026 09:35:14 GMT91561404-af28-475a-b96b-cb6cbaadd097:d1bede53-bdf1-480b-aedd-0c16688f7583linli shi2https://e2echina.ti.com/thread/1098117?ContentTypeID=0https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1098117/cdce6214-q1/rss?ContentTypeId=0<p><b>Part Number:</b> CDCE6214-Q1</p><p>你好，我这边想咨询下CDCE6214RGER 的使用问题，在模式选择上，HW_SW_CTRL 、REFSEL连接到MCU，但对应的引脚都设置为了高阻状态，来实现HW_SW_CTRL 、REFSEL的悬空状态，让芯片进入到回退模式，然后使用IIC来实现对CDCE6214RGER寄存器的写入，但是经过大量测试，例如对寄存器R43进行先读再写再读的操作，能够实现寄存器的读写，确保了IIC的时序正确，但是在写其他寄存器的时候R0~R85的时候，该寄存器值是由TICSPRO得到的，但是我验证后，发现只有少数寄存器写入正确，大部分寄存器写入都是错误，想请教下是不是我还有什么地方没有考虑到，希望得到恢复</p>https://e2echina.ti.com/thread/3952115?ContentTypeID=1Tue, 13 Oct 2026 09:13:38 GMT91561404-af28-475a-b96b-cb6cbaadd097:125fdf02-3da6-4756-9fd4-8d3fa455ec54Alice0https://e2echina.ti.com/thread/3952115?ContentTypeID=1https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1098118/cdce6214-q1-mode-selection-and-register-read-write-issues/rss?ContentTypeId=0<p>您好，</p> <p>&nbsp; &nbsp; &nbsp; 不同模式下I2C地址是不一样的，芯片默认只有在fall-back模式下I2C接口可用。</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/pastedimage1791882879077v2.png" alt=" " /></p> <p>&nbsp; &nbsp; &nbsp; 寄存器写入顺序建议按照<span>&nbsp;R85~ R0顺序。请参考链接内容。</span></p> <p><span>&nbsp; &nbsp; &nbsp;&nbsp;<a href="https://e2e.ti.com/support/clock-timing-group/clock-and-timing/f/clock-timing-forum/1308842/cdce6214-programming-cdce6214-from-mcp2221a-over-i2c?tisearch=e2e-sitesearch&amp;keymatch=CDCE6214%252525252520program">CDCE6214: Programming CDCE6214 from MCP2221A over I2C - Clock &amp; timing forum - Clock &amp; timing - TI E2E support forums</a></span></p> <p><span>&nbsp; &nbsp; &nbsp;<a href="https://e2echina.ti.com/cfs-file/__key/communityserver-discussions-components-files/124/8171.CDCE6214-Programming-_2800_1_2900_.pdf">e2echina.ti.com/.../8171.CDCE6214-Programming-_2800_1_2900_.pdf</a></span></p><div style="clear:both;"></div>https://e2echina.ti.com/thread/3952085?ContentTypeID=1Mon, 12 Oct 2026 11:56:23 GMT91561404-af28-475a-b96b-cb6cbaadd097:e0c5210c-05aa-4095-aefb-fa3fe955261bAlice1https://e2echina.ti.com/thread/3952085?ContentTypeID=1https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1098118/cdce6214-q1-mode-selection-and-register-read-write-issues/rss?ContentTypeId=0<p><span>您好，</span><br /><span>已经收到了您的案例，调查需要些时间，感谢您的耐心等待。</span></p><div style="clear:both;"></div>https://e2echina.ti.com/thread/3952071?ContentTypeID=1Mon, 12 Oct 2026 09:52:54 GMT91561404-af28-475a-b96b-cb6cbaadd097:2e2aafcd-1018-4476-8512-26fb7c35fe5dAlice1https://e2echina.ti.com/thread/3952071?ContentTypeID=1https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1098117/cdce6214-q1/rss?ContentTypeId=0<p>您好，<br /> 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/1096584?ContentTypeID=0Thu, 01 Oct 2026 12:41:07 GMT91561404-af28-475a-b96b-cb6cbaadd097:4cdb2305-cbc5-4979-802b-07e726ef98b5user36123213https://e2echina.ti.com/thread/1096584?ContentTypeID=0https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1096584/cdclvc1106/rss?ContentTypeId=0<p><b>Part Number:</b> CDCLVC1106</p><p>芯片供电3.3V,1G引脚串联10K电阻接入3.3V电源，输入采用有源晶振，频率8.192MHz,芯片输出给ADC芯片ADS131M04。测试发现1106芯片6路均没有输出，电平为0V。</p> <p>1、测量输入正常，方波，幅度3.3V。</p> <p>2、供电和1G控制正常。</p> <p>3、输出线路没有低阻短路等情况，阻抗正常。</p> <p>4、设计中芯片3个电源引脚，只有一个引脚加了0.1uF和1uF电容，其他两个电源引脚直接由PCB电源层接入3.3V,不知道是不是这个问题导致。请帮助分析，谢谢！</p>