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Buffer size
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RSKV

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Buffer size

JumpeiKochi posted on 18 Jun 2012 4:48 PM PST
Senior Member
11 Forum Posts
Hi, I would like to know about the following relations. *Buffer size at GPIF2 Designer Timing tab. *dmaCfg.count(dmaCfg = CyU3PDmaChannelConfig_t). *Max packet size of Bulk endpoint On what buffer size does size change of Buffer size(GPIF2 Designer Timing tab) have influence? Best Regards, Kochi


Re: Buffer size

RSKV posted on 18 Jun 2012 07:06 PM PST
Cypress Employee
655 Forum Posts

 Buffer size at GPIF II designer tab is just to get the timing waveform.

It is not going to get updated any where. dmaCfg paramters in the firmware decides the DMA buffer size. 



Re: Buffer size

JumpeiKochi posted on 19 Jun 2012 10:33 PM PST
Senior Member
11 Forum Posts
Thank you. \n Please let me ask a question one more. How is WaterMark Value changed at SDK or GPIF Designer? Best regards, Kochi

Re: Buffer size

RSKV posted on 19 Jun 2012 01:40 AM PST
Cypress Employee
655 Forum Posts

Use API CyU3PGpifSocketConfigure.

For more details on this please refer to 18th page in gpif2_designer_userguide.pdf and 506th page in FX3APIGuide.pdf

 



Re: Buffer size

JumpeiKochi posted on 19 Jun 2012 05:19 PM PST
Senior Member
11 Forum Posts
Thanks! I would like to know about the following parameters:[watermark][burst]. I use 32bit bus width. In this case, what does a watermark value become?    For example, I would like to assert a flag by 80% of buffers.

Re: Buffer size

RSKV posted on 19 Jun 2012 06:59 PM PST
Cypress Employee
655 Forum Posts

Please have a look at the below mentioned thread:

http://www.cypress.com/?app=forum&id=167&rID=62744



Re: Buffer size

JumpeiKochi posted on 24 Jun 2012 03:47 PM PST
Senior Member
11 Forum Posts
Dear RSKV, Thanks. I understood it.




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