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USB superspeed peripherals

Anonymous
Not applicable

Using the GPIF designer, I configured the GPIF interface as master with internal clock.
It appears that the statemachine runs @ 200Mhz, and that the clock provided by the FX3 to the outside world is also 200Mhz.

   

I tried using CyU3PDeviceInit but that doesn't change the GPIF frequency

   

I tried changing the CY_U3P_GPIF_CONF_DDR_MODE field in the GPIF Configuration Register by manually changing the generated cyfxgpif2config.h file, but that doesn't help either..

   

In both cases the external clock remains 200.8Mhz ...
 

   

Q: Has anyone ideas how to change this to 100Mhz?

   

(since that is the maximum frequency the interface supports...)

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LiMa_282146
Level 4
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Level 4

I haven't used this but maybe another function to try is CyU3PPibInit(). See slavefifo example for some details about it.

   

Sodafarl

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Anonymous
Not applicable

That seems to work, thanks!

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