Maximum clock speed

I'm interested to know if the on-board 100 MHz clock can be changed for a faster one, and what will be the maximum speed we can operate on the Zedboard.

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0 Former Member over 13 years ago

daviddlc,

The clock can be increased using the PLL's on the Zynq device.

Here is the clocking users guide for the 7-series device:

http://www.xilinx.com/support/documentation/user_guides/ug472_7Series_Clocking.pdf

Chapter 3, on page 61 begins the description and functionality of the Mixed-Mode Clock Management (MMCM) and Phase Lock Loop (PLL).

As far as the maximum frequency, that is greatly dependent on the quality of your code. In the case of 'perfect code' the maximum is several hundred megahertz.
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0 deaxman over 12 years ago in reply to Former Member

What do you mean by "quality". If there is a lot of code and a lot of resources are used but it is high quality (as in very efficent) does that mean that it is better than something that uses less resources but is less efficent? Or is this maximum clock speed entirely dependant on the amount of resources used?
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0 deaxman over 12 years ago in reply to Former Member

What do you mean by "quality". If there is a lot of code and a lot of resources are used but it is high quality (as in very efficent) does that mean that it is better than something that uses less resources but is less efficent? Or is this maximum clock speed entirely dependant on the amount of resources used?
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