https://e2echina.ti.com/support/clock-and-timing/zh-CNTelligent Community 13https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1078123/cdci6214-cdci6214-issue-with-10mhz-to-100mhz-frequency-multiplication-reg-0x07-always-reads-0x0c10/3885885Mon, 15 Jun 2026 01:34:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:70533fe3-c05b-47f6-b27d-f20e66962897AliceHello, Please notice that CDCI6214 is NOT RECOMMENDED FOR NEW DESIGNS and it is recommended to switch to CDCE6214. We suggest you use https://www.ti.com/tool/TICSPRO-SW to help configure the chip.https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1079088/lmk1c1102/3884972Fri, 12 Jun 2026 04:29:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:55f34e4a-a586-4687-af69-3d6785b6bdeaFRANK1会恶化输出信号。 clock buffer，它需要输入信号快速的通过判断阈值，才能精准输出。如果压摆率低，它会在阈值区间停留多长，任何微小的噪声，都会造成输出边沿抖动。https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1079088/lmk1c1102/3884971Fri, 12 Jun 2026 03:49:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:735e9622-0274-4f0a-ac40-d77de793520bFRANK1感谢您对TI产品的关注！ 关于你的咨询，我们正在确认您的问题，感谢您的耐心等待。https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1079088/lmk1c1102Fri, 12 Jun 2026 03:46:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:d560a261-dbc6-4ded-a84a-836600dfef20zhonghang wangPart Number: LMK1C1102 如果给LMK1C1102输入一个正弦波信号，幅度满足要求，但压摆率可能不满足要求，这样会恶化输出信号的抖动吗？LMK1C1102https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1078123/cdci6214-cdci6214-issue-with-10mhz-to-100mhz-frequency-multiplication-reg-0x07-always-reads-0x0c10/3884113Thu, 11 Jun 2026 09:19:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:60ae0054-f694-4ebe-93e4-a791510e14aeEric ChenAddr Op Value 0x01 write 0x6A22 0x1A write 0x0B01, which means bit 15 of the INPUT0 register is 0. 0x1B write 0x0001 0x1D write 0x4032 0x05 write 0x0000 0x00 write 0x0004 Above is current register config, but register 07h is now 0x0C10, which bit0(lock_det) means frequency unlocked. Please provide some advice or suggestions on how to troubleshoot. Thanks.https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1078123/cdci6214-cdci6214-issue-with-10mhz-to-100mhz-frequency-multiplication-reg-0x07-always-reads-0x0c10/3884109Thu, 11 Jun 2026 09:09:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:c1df0cf7-c048-4945-9e0b-962621081c68AliceHello, Sorry for my misunderstanding. When using an LVCMOS crystal input on the CDCI6214, only the XOUT/FB_P pin is used and the FB_N pin can be left floating. Also, note that bit 15 of the INPUT0 register will need to be set to 0 to enable LVCMOS inputs.https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1078123/cdci6214-cdci6214-issue-with-10mhz-to-100mhz-frequency-multiplication-reg-0x07-always-reads-0x0c10/3884107Thu, 11 Jun 2026 08:55:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:6c2810da-0b6e-4647-aba1-bc5a8bd48429Eric ChenHello, Thank you for your reply. The single-ended input clock is designed according to the diagram shown in the user manual, as illustrated below. Meanwhile, some replies in this forum also suggest that this design is feasible. Could you please double-check and confirm if single-ended input clock is indeed unsupported?https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1078123/cdci6214-cdci6214-issue-with-10mhz-to-100mhz-frequency-multiplication-reg-0x07-always-reads-0x0c10/3884087Thu, 11 Jun 2026 06:36:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:7989f0f2-14bc-4ebe-a893-ade5c4c793c8AliceHello, There is Evaluation board page, and schematic is shared in EVM user guide. It seems single ended input clock is not supported, do you monitor clock input between pin 1 & pin 2? www.ti.com/.../CDCI6214EVM I recommend you use TICSPRO-SW to get your configuration.https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1078123/cdci6214-cdci6214-issue-with-10mhz-to-100mhz-frequency-multiplication-reg-0x07-always-reads-0x0c10/3883046Wed, 10 Jun 2026 02:47:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:0c21607b-8832-495f-a5fd-bd9a115e8dfbEric ChenHi, how is the verification going?https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1078123/cdci6214-cdci6214-issue-with-10mhz-to-100mhz-frequency-multiplication-reg-0x07-always-reads-0x0c10/3881304Mon, 08 Jun 2026 06:50:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:3c3b495f-9f2c-4ffa-9f02-171f1d1d2d12Vivian GaoThank you for your attention to TI products. We are verifying your issue, please wait for our reply.https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1078123/cdci6214-cdci6214-issue-with-10mhz-to-100mhz-frequency-multiplication-reg-0x07-always-reads-0x0c10Mon, 08 Jun 2026 06:39:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:3dbffaac-ae34-495a-8665-896d817e1814Eric ChenPart Number: CDCI6214 Other Parts Discussed in Thread: TICSPRO-SW , CDCE6214 Hi everyone, We are trying to use the CDCI6214 to multiply a 10MHz OCXO output to 100MHz for our FPGA. Hardware Setup: Pin 1: 10MHz square wave from the OCXO. Pin 2: 12pF 50V capacitor to GND. Pin 3: 3.3V supply. Pin 4: Pulled to GND via a 4.7k resistor. Pins 5 & 6: Left floating. Pin 8: Connected to a reset IC. Pins 12 & 19: Connected to the host I2C bus. (I've attached our current schematic for reference.) Issues Encountered: We found that the reset IC wasn't working properly, and Pin 11 doesn't support single-ended output. To work around the reset issue, we removed the reset IC and manually pulled Pin 8 low during power-up to satisfy the chip's power-up timing requirements. After doing this, we can successfully read and write configurations via I2C from the host. Current Goal & Configuration: We want to use the simplest possible configuration just to get the chip working and verify the signal path from input to output before moving on to further debugging. Our current register configuration is: Addr Op Value 0x01 write 0x6A22 0x1A write 0x0B01 0x1B write 0x0001 0x1D write 0x4032 0x05 write 0x0000 0x00 write 0x0004 wait 1 second 0x07 read -> 0x0C10 We’ve tried several other configuration combinations, but whenever we read Register 0x07, the result is always 0x0C10 . Could anyone provide some advice or suggestions on how to troubleshoot and resolve this issue? Thanks in advance!CDCI6214EVMTICSPRO-SW无线基础设施CDCE6214CDCI6214https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1076837/lmx2594-lmx2594-gets-damaged-upon-power-up/3876628Fri, 05 Jun 2026 00:33:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:2adb69f2-94bd-44e8-b697-c1eb5f42d166Daniel您好 感谢您的说明，请您优先检查焊接以及电路layout的电源部分是否存在短路以及焊接粘连问题。https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1076837/lmx2594-lmx2594-gets-damaged-upon-power-up/3876619Thu, 04 Jun 2026 22:51:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:a0ab0a83-79cc-4944-9d55-223acbf6842fEirwenHello, we have received your case and the investigation will take some time. Thank you for your patience.https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1076837/lmx2594-lmx2594-gets-damaged-upon-power-upThu, 04 Jun 2026 14:33:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:e82f0cfc-e387-4400-96c1-964294d02bd1zhiwei liuPart Number: LMX2594 Dear TI Support Team, I am currently using the LMX2594 in a frequency multiplication application and have encountered a critical issue. The device gets damaged immediately upon power-up, before any register configuration is performed. The following measurements have been taken: VCC measurement: During power-up, the VCC voltage cannot reach the nominal 3.3V, measuring only approximately 2.6V. Supply current: With a 5V input, the combined current drawn by the OCXO and the LMX2594 is only 700mA, which remains below the LDO’s maximum rating. Internal LDOs: The measured voltages on various internal LDOs are incorrect compared to the expected values. At this stage, no SPI commands have been sent to the device, and yet the LMX2594 appears to be damaged. Given these observations, I would appreciate your guidance on the following: Could the insufficient VCC voltage during power-up be responsible for damaging the device? Are there any known startup timing or inrush current characteristics that could explain the observed behavior? What are the most likely design issues that could cause such a failure, particularly regarding power supply decoupling, layout, or the connection between the OCXO and the LMX2594? Do you have any specific recommendations for debugging the internal LDOs to identify the root cause? I have attached the relevant section of my schematic for your reference. Please let me know if additional information or measurements would be helpful for the analysis. Thank you very much for your time and assistance. Best regards测试和测量lmx2594https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1075843/lmx2694-ep/3876345Tue, 02 Jun 2026 06:21:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:c92da4e0-38ef-4295-a57c-1d6f34824488Alice您好， 对于SPI通讯，只有通过回读正确才能确认写入是正确的。 上电成功后， 所有寄存器都有默认值(R0默认值0x200C)，请问可以正确回读吗？ 根据数据手册7.5.1 Recommended Initial Power-Up Sequence，上电后是否有等待时间，确认FCAL_EN = 1。https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1075593/lmk04832evm-k-m/3875057Fri, 29 May 2026 02:35:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:900ff87b-8a7f-4d65-a2c0-50a1797593f0EirwenLMK04832EVM的时钟配置可以参考下面两个工具： PLLATINUMSIM-SW 应用软件和框架 | 德州仪器 TI.com.cn TICSPRO-SW 应用软件和框架 | 德州仪器 TI.com.cn TICSPRO-SW的使用方式请参考评估板用户手册： www.ti.com/.../snau215a.pdfhttps://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1075843/lmx2694-ep/3873969Wed, 27 May 2026 22:57:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:07518429-ff9f-4407-9d36-47c4deaaacadTaylor您好， 已经收到了您的案例，调查需要些时间，感谢您的耐心等待。https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1075843/lmx2694-epWed, 27 May 2026 12:42:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:ff75bdd5-655a-424c-86f9-367a7c9148caHui Cao22Part Number: LMX2694-EP 我需要回读寄存器，我是手动单个寄存器读写测试，可以确认写入是没有问题的（例如复位，都是没问题的），然后我将寄存器R0的bit2置为1'b0（即muxout改为回读,写入00_2008），随后再写入80_0000（回读寄存器0），发现muxout还是为锁定指示（常1'b1），像是没切换过去，请问一下是需要其他额外寄存器写入吗？无线基础设施LMX2694-EPhttps://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1075593/lmk04832evm-k-m/3872259Tue, 26 May 2026 08:15:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:5cda569d-013d-4689-8226-d9d09bd8aa04Eirwen已经收到了您的案例，调查需要些时间，感谢您的耐心等待。https://e2echina.ti.com/support/clock-and-timing/f/clock-timing-forum/1075593/lmk04832evm-k-mTue, 26 May 2026 08:00:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:033fc55a-2e3c-4ae9-89d4-e9df16b14a84T yhPart Number: LMK04832EVM Other Parts Discussed in Thread: TICSPRO-SW 根据手册提供的说明，LMK04832EVM开发板默认加载122.88MHz时钟，但我想产生几百k到几十M的方波时钟信号。我对TICSPro工具使用不太清楚，调整一些参数后，它产生的总是带小数点的信号，例如1474.45MHz。 我想请问该如何配置，使用一个外部输入的时钟，然后分频产生多路整数的，几百k到几十MHZ的方波？ SetModes、CLKinX Control、PLL1and2、Clock Outputs等位置该如何设置 另外可否转告贵司中国的技术支持团队联系方式？TICSPRO-SW测试和测量PLLATINUMSIM-SWLMK04832EVM