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Problem with 2 cascaded PLL in CycloneV
Good afternoon,
I'm trying to cascade two PLL's. Every PLL is fractional.
The first PLL gets Clock=75 MHz at its refclk port.
Then, I'm taking the signal from its cascade_out port and connect it to adjpllin port of second PLL.
First PLL gets RESET='0' constant,the second PLL gets RESET from inverted locked port of first PLL.
Unfortunately, nothing happens during simulation -the outputs of second and first PLL are red.
What is wrong with my cascading? Why simulation doesn't work?
4 Replies
- AGofs
Occasional Contributor
Hi guys,
Do you have something new about this issue?
- Rahul_S_Intel1
Frequent Contributor
Let me recreate the issue and will update you , in mean time kindly reset the first PLL for some period of time then try to obtain the data
- Rahul_S_Intel1
Frequent Contributor
Hi ,
I had my simulation in Model sim and found it is wokring
- Rahul_S_Intel1
Frequent Contributor
Hi ,
Kindly let me know, if you need further assistance.