FX3 USB SuperSpeed kit picozed interface

mugundhan_3335116 Apr 19, 2018 3:44 AM

Hi,

I'm designing a carrier board for picozed SOM. I would like to have usb 3 connectivity. To shorten the development time, I plan to use the super speed kit for implementing the usb 3 communication. I see that the kit uses a normal berg connector array for the GPIF and other control signals. Will this affect the signal throughput in anyway ? What is the cut-off length that I should have in mind to achieve 1Gbps+ speeds when using this on the carrier card ?

Thank you,

Mugundhan

1. Re: FX3 USB SuperSpeed kit picozed interface

HemanthR_06 Apr 25, 2018 3:11 AM (in response to mugundhan_3335116)

Hello Mugundhan,

Please refer to the section 6 "GPIF II interface" of the following document:
http://www.cypress.com/file/139936/download

If the GPIF bus is length matched as mentioned in the above section, if the impedance mismatch is taken care by using suitable series resistors and if the GPIF timings are according to the GPIF II timing mentioned in the datasheet then there shouldn't be any issue. With 100MHz clock on the GPIF II interface and bus configured to be 32 bit width, you can achieve 400MB/s.

Regards,
Hemanth
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