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PCLK Direction in Sync Slave FIFO Example
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PCLK Direction in Sync Slave FIFO Example

wglados posted on 18 Apr 2012 2:53 PM PST
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23 Forum Posts

 

In the Synchronous Slave FIFO example distributed with the SDK, is the FX3 driving PCLK, or is the external processor driving PCLK?

 

I can't find any information on this in the documentation for this example.

Re: PCLK Direction in Sync Slave FIFO Example

Chris R. posted on 19 Apr 2012 01:53 AM PST
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135 Forum Posts

The PCLK is always input in slave FIFO. AFAIK there is no option to drive the PCLK out like the IFCLK at FX2.

Re: PCLK Direction in Sync Slave FIFO Example

wglados posted on 19 Apr 2012 09:34 AM PST
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23 Forum Posts

 In the GPIF II Designer, you can set the PCLK direction to be either driven by the FX3 or the external processor.  It also appears as an option in one of the Slave FIFO Application Notes.

 

It sounds like the slfifosync example in the SDK is probably set up so that PCLK driven by the external processor, though?  Can anyone confirm this?  I really don't want to burn out an FPGA pin.



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