Part Number: LMK05028 Hello team,
I can't find register map for this device on the datasheet.
Could you please tell me which register to look for for each below:
Which INx is selected for each DPLLs
Which DPLL is selected for each OUTx
Lock detect…
Hi Patrice,
After further discussion with the team, we do not recommend using LMK05028 for 1-PPS inputs as there are issues with the DPLL locking. The LMK5B33216 (for ethernet clocks) or LMK5C33216 (for wireless applications) are newer technology that…
Hi Yuki,
If you change to the setting "CMOS{HiZ/HiZ)" do you see the same results? Please share scope plots of both the HiZ and CMOS(low/low) states.
Regards, Jennifer
Hey Jennifer,
Thanks for looking into this. After getting the eval board and playing around with a few things, we were able to get the PLL to lock. After reviewing the path, it was found that the input clock to the PLL was actually derived from a spread…
Part Number: LMK05028EVM Other Parts Discussed in Thread: LMK5C33216 , LMK5B33216 , LMK05028 Hi Expert,
I have purchased the LMK05028EVM board with the objetive of development of a sensor acquisition system, capable of synchronizing measurements in various…
Part Number: LMK05028 I am trying to get the PLL lock status. I found these three registers which have some bits indicating if there is loss of lock or not. Are these are right registers to get the status from or there are some other registers to get…
Hi Dhruv,
Have you programmed the EEPROM?
If not, please probe an output and send a scope shot if possible. I would like to confirm that the device is powered on properly and we are getting some output. The default configuration is listed in the datasheet…
Part Number: LMK05028 Other Parts Discussed in Thread: LMK05318B , LMK5B33414 , LMK5B33216 , LMK5B12204 Hi,
I'm using the LMK05028 to synchronize to a 1PPS input and generate a 1PPS, 32.768MHz & 2.56KHz at the outputs using only DPLL2. The outputs need to…
Part Number: LMK05028 Other Parts Discussed in Thread: LMK5B33216 , LMK5C33216 Hi team,
My team is current using LMK05028 with INx frequency 388.8MHz, which is smaller than the maximum INx frequency rating.
However, it appears that due to the customer…
Part Number: LMK05028 Hi team,
If the DPLL input is programmed into non-volatile memory to use the XO pin by default, how to change the input to INx pin instead?
Can this be programmed, or is achieved by external circuitry?
Regards
