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Using a Transceiver Block with Cyclone® V. Which has better performance, the case where Refclk is input by using an external PLL to generate the desired frequency or the case where Refclk is input directly from the pins at the desired frequency?

Using a Transceiver Block with Cyclone® V. Which has better performance, the case where Refclk is input by using an external PLL to generate the desired frequency or the case where Refclk is input directly from the pins at the desired frequency?

  • Updated

For the PLL used in the Transceiver, the best performance is achieved by inputting the Refclk directly from the pin. 
Please refer to the description in the following handbook.

Cyclone V Device Handbook Volume 2: Transceivers 
(see Input Reference Clocking section)

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Category: Transceivers 
Tools:- 
Device: Cyclone® V

 

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