DG
What do you mean?
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2019 May 30
N
I need to generate an 1ps from 200Mhz input clock
AK
NITHESH
I need to generate an 1ps from 200Mhz input clock
1 ps resolution is impossible for fpga
N
For XC 7z045 board kintex board
N
I'm using
AK
I think that you can reach 100ps resolution. But this is maximum
N
Okay how will you reach 100ps resolution can you please tell me
AK
You can use gigabit transceiver and send one bit as logic 1. I dont remember which speed is maximum for this fpga. You can check this into specifications
N
Can you share any link on that please so that I can go through
AK
Yes. After one hour
N
Okay thanks
AS
1ps is 1 THz, too much :)
N
1ps is 1Ghz
AK
in this document we can see that your FPGA in the some packages have GTX transceivers.
https://www.xilinx.com/support/documentation/data_sheets/ds190-Zynq-7000-Overview.pdf
about transceiver you can read in this document
https://www.xilinx.com/support/documentation/user_guides/ug476_7Series_Transceivers.pdf
Maximum possible speed is 12.5 Gbit/s. so maximum possible accuracy is ~80ps
https://www.xilinx.com/support/documentation/data_sheets/ds190-Zynq-7000-Overview.pdf
about transceiver you can read in this document
https://www.xilinx.com/support/documentation/user_guides/ug476_7Series_Transceivers.pdf
Maximum possible speed is 12.5 Gbit/s. so maximum possible accuracy is ~80ps
AS
no, 1 GHz is 1 ns
AK
NITHESH
1ps is 1Ghz
1 ps is 1^-12 s. 1GHz is 1^9 Hz.
you are mistakes
you are mistakes
AK
for 1 ns resolution you can use dedicated serdes. I think that these can acheive speed of 1 GHz
N
Okay how will can we do frequency multipliers in FPGA
AK
NITHESH
Okay how will can we do frequency multipliers in FPGA
Pll or mmcm blocks. You can use clock wizard into vivado
N
Andrew Kushchenko
Pll or mmcm blocks. You can use clock wizard into vivado
Without using IP wizard how can we do that by only digital circuit