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GPIF II interface in relation to io matrix configuration
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GPIF II interface in relation to io matrix configuration

Lumpi6 posted on 28 Nov 2012 3:06 AM PST
Top Contributor
183 Forum Posts

Hi,

is it possible to configure GPIF bus width 32 bit in the IOMatrix and then use just 8bit data width in GPIF interface?

Or do I have to reconfigure the IO matrix to 16 bit mode?

thanks,

lumpi

Re: GPIF II interface in relation to io matrix configuration

Lumpi6 posted on 29 Nov 2012 11:16 PM PST
Top Contributor
183 Forum Posts

I got it ;-).

That is working fine if GPIF is in 8bit mode and IOMatrix is configured to 32bit mode.



Re: GPIF II interface in relation to io matrix configuration

Gayathri posted on 30 Nov 2012 07:00 AM PST
Cypress Employee
327 Forum Posts

 Cool 

Re: GPIF II interface in relation to io matrix configuration

RSKV posted on 03 Dec 2012 12:38 AM PST
Cypress Employee
655 Forum Posts

Hi Lumpi,

Yes. It works.

The only difference would be that you will loose SPI interface when you configure the IO matrix to 32-bit instead of 16-bit. It does not make any difference if you are not using SPI in your design.

Thanks,

sai krishna.

Re: GPIF II interface in relation to io matrix configuration

Lumpi6 posted on 04 Dec 2012 12:13 AM PST
Top Contributor
183 Forum Posts

Hi sai krishna,

thank you very much for your answer. That is clear to me with the SPI interface, i am actually just trying and playing with the supported examples from cypress in the SDK.

Thanks,

lumpi

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