0
\$\begingroup\$

I try to design a board with an ARTIX-7 FPGA. There is a big question that which pin of FPGA should I put an oscillator? I inspected a document about clocking the 7 series xilinx FPGA (7 Series FPGAs Clocking Resources ) but I still don't know what should I do, because I saw a design of a kintex-7 and is had been put various oscillator with different frequancy.

What is the difference between MRCC and SRCC pins?

I'm thankful if someone can help me!

\$\endgroup\$
2
\$\begingroup\$

You can drive a clock into any CC (clock-capable) pin and use it as a GCLK or feed to a PLL or MMCM block.

There are special uses for some clocks, for example to implement memory interfaces, that have local low-skew local distribution in addition to driving a global net. That’s where MRCC and SRCC come in. MRCC inputs are Multi-region. SRCC are single-region.

The diagrams in the doc you linked explains SRCC and MRCC in more detail: https://www.xilinx.com/support/documentation/user_guides/ug472_7Series_Clocking.pdf#G4.319704

\$\endgroup\$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.