Maximum GPIF throughput

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Anonymous
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What is the maximum achievable throughput of the GPIF bus if all 4 DMA threads are utilized in MULTI + AUTO mode?

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4 Replies
Anonymous
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Hi,

   

If the USB side application is fast enough then the maximum speed that you can achieve using GPIF II is close to 400MBps.

   

Regards,

   

sai krishna.

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Anonymous
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 What host controller was used when achieving the 400MB/s?

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Anonymous
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Hi,

   

I don't think we have done any measurements with the configuration that you are looking for.

   

But as you know the GPIF II interface can run at 100MHz, with 32-bit data bus (400MBps).

   

The practical max speed that we have seen from GPIF to USB side is 357MBps. refer to following application note:

   

http://www.cypress.com/?rID=51581

   

 

   

Win7 64-bit PC with an Intel Z77 Express Chipset is used to take these measurements.

   

Regards,

   

sai kirshna.

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Anonymous
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Please refer to the following application note to find out the host controller that gave maximum performance:

   

AN86947 - Optimizing USB 3.0 Throughput with EZ-USB® FX3™

   

 

   

Thanks,

   

Sai Krishna.

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