Answered

• LMK04821EVM: LMK04821EVM configuration issue

  

  Well Wang

  Resolved

  Part Number: LMK04821EVM Other Parts Discussed in Thread: LMK04821 , LMK04828 , LMK04228 LMK04821EVM 默认配置（如图1所示）下PLL2无法锁相（Status_LD2 不亮），输出时钟频率不正确 图1： 修改N Divider和N prescaler可以实现锁相（ Status_LD2 亮，输出时钟频率正确可调 ），但VCO1 输出频率已经超出Datasheet范围，PLL2的锁相频率fpd2也不满足手册要求…

  • Resolved

  • over 2 years ago
  • Clock & timing
  • Clock & timing forum

• LMK04821EVM: unlocked issue analysis

  

  Adrian Liu

  Part Number: LMK04821EVM Hi Team, In customer use case, CLKIN=40MHz,OSCin=30.72MHz, PLL2 VCO=2000MHz, I meet some problems when setting this configuration. LMK04821EVM cannot lock under the following configuration, please help with it, thank you.…

  • over 3 years ago
  • Clock & timing
  • Clock & timing forum

• LMK04821EVM: Cannot be locked

  

  Amy Luo

  TI Thinks Resolved

  Part Number: LMK04821EVM Hi team, One of our customer's issues, I'm forwarding it below, could you please provide some troubleshooting suggestions We use LMK04821EVM to evalute our application, that need 10MHz clock（Using A Rubidium Oscillator）…

  • over 3 years ago
  • Clock & timing
  • Clock & timing forum

• LMK04821EVM: PCB Layout file

  

  Kiran K

  TI Thinks Resolved

  Part Number: LMK04821EVM Can i get pcb board file of LMK04821EVM for reference design.?

  • over 3 years ago
  • Clock & timing
  • Clock & timing forum

• LMK04821EVM: USB2ANY cannot connect normally

  

  Delmore Du

  TI Thinks Resolved

  Part Number: LMK04821EVM Other Parts Discussed in Thread: USB2ANY LMK04821EVM cannot be connected normally, and the latest USB2ANY Explorer software still cannot be connected normally

  • over 3 years ago
  • Clock & timing
  • Clock & timing forum
Answered

• LMK04821EVM: LMK04821EVM syncronization

  

  kwan k

  Resolved

  Part Number: LMK04821EVM Other Parts Discussed in Thread: TICSPRO-SW I am using LMK04821EVM and I am having issue in doing SYNC. I am seeing random phases. I need help.

  • Resolved

  • over 8 years ago
  • Clock & timing
  • Clock & timing forum

• LMK04821EVM: take use of SYSREF to generate a 50kHz signal

  

  Jerry Chen

  Part Number: LMK04821EVM Other Parts Discussed in Thread: LMK04821 , LMK04832 Hi there, I'm using LMK04821EVM to generate 50kHz 100kHz 300kHz and 500kHz signal. The frequency is low so I take use of SYSREF with SDCLKout1 and SDCLKout2. The problem I…

  • over 6 years ago
  • Clock & timing
  • Clock & timing forum

• LMK04821: Clock configuration problem

  

  Delmore Du

  TI Thinks Resolved

  Part Number: LMK04821 The manual explains that lmk04821 has a total of seven groups of clocks. Each group of clocks includes DCLK and sdclk, of which DCLK is affected by the clock divider parameter and the other sdclk is affected by the sysref clock divider…

  • over 3 years ago
  • Clock & timing
  • Clock & timing forum
Answered

• USB2ANY firmware load instructions cut off

  

  Neil Vranicar

  Resolved

  Other Parts Discussed in Thread: LMK04821EVM , USB2ANY I'm trying to connect the USB2ANY device that comes with the LMK04821EVM but when I plug it in it prompts me to a firmware update. It gives me this image, telling me while holding down the button…

  • Resolved

  • over 5 years ago
  • Clock & timing
  • Clock & timing forum
Answered

• LMK04821: Trouble syncronizing multiple parts - SYNC_DISSYSREF strange behavior

  

  Jay Kub

  Resolved

  Part Number: LMK04821 I have a pair of LMK04821EVM eval boards. I've replaced the VCXO with a 50MHz part on each (p/n CVHD-950X-50.000) and installed the SYNC input SMA connectors. I'm using a small FPGA eval board to generate some test waveforms - a…

  • Resolved

  • over 5 years ago
  • Clock & timing
  • Clock & timing forum

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