5 Replies Latest reply on Jun 24, 2012 5:47 PM by jumpei.kochi

Buffer size

jumpei.kochi Aug 18, 2017 2:30 PM

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

1. Re: Buffer size

ramav_01 Jun 18, 2012 9:06 PM (in response to jumpei.kochi)

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.
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2. Re: Buffer size

jumpei.kochi Jun 19, 2012 12:33 AM (in response to jumpei.kochi)

Thank you. \n Please let me ask a question one more. How is WaterMark Value changed at SDK or GPIF Designer? Best regards, Kochi
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3. Re: Buffer size

ramav_01 Jun 19, 2012 3:40 AM (in response to jumpei.kochi)

Use API CyU3PGpifSocketConfigure.

For more details on this please refer to 18th page in gpif2_designer_userguide.pdf and 506th page in FX3APIGuide.pdf
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4. Re: Buffer size

jumpei.kochi Jun 19, 2012 7:19 PM (in response to jumpei.kochi)

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.
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5. Re: Buffer size

ramav_01 Jun 19, 2012 8:59 PM (in response to jumpei.kochi)

Please have a look at the below mentioned thread:

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

jumpei.kochi Jun 24, 2012 5:47 PM (in response to jumpei.kochi)

Dear RSKV, Thanks. I understood it.
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