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fx3's cyusb3014 io toogle speed
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fx3's cyusb3014 io toogle speed

baran posted on 05 Jan 2012 10:22 PM PST
Member
8 Forum Posts

anyone can tell me the maximum gpio's toggle speed of the cyusb3014?

Re: fx3's cyusb3014 io toogle speed

aasi posted on 05 Jan 2012 07:50 AM PST
Cypress Employee
1073 Forum Posts

It should be around 720kHz using the SDK. 1MHz should be the max possible we're trying to provide register access to do that.

Regards,

Anand

Re: fx3's cyusb3014 io toogle speed

baran posted on 06 Jan 2012 06:45 PM PST
Member
8 Forum Posts

ASSI,i think it must be higher than 1mhz.

Atmel's arm926ej-s SoC or sam7 Soc has a io toggle speed at about  1/4~1/5 of the system clock.

So I think that fx3's io toggle speed is the same(at about 25mhz).But now i has not the chip,can't test it.

anyone has the real result?

Re: fx3's cyusb3014 io toogle speed

baran posted on 06 Jan 2012 06:50 PM PST
Member
8 Forum Posts

write "00101010101010..." to the pin

Re: fx3's cyusb3014 io toogle speed

FritzM posted on 13 Jan 2012 05:34 AM PST
Member
5 Forum Posts

I have tested it with a fx3 DVK and measured GPIO toggle speed with an oscilloscope. The max. toggle freq is about 270 kHz write a sequence of 0101010 to a GPIO Pin via SDK. If you want to simulate a SPI-Readaccess then this toggle frequence is only 210 kHz because of the needed GPIO-Reads. Perhaps there is a faster way to implement and someone has a good idea.

Regards Uli



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