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USB3.0 FX3 using SPI interface in GPIF 32bit Mode is not possible
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USB3.0 FX3 using SPI interface in GPIF 32bit Mode is not possible

Lumpi6 posted on 19 May 2011 4:39 AM PST
Top Contributor
213 Forum Posts

Hi,

is it possible that the SPI interface can work in future with GPIF 32bit Mode with a SDK update or does the FX3 design never allow this combination?




Re: USB3.0 FX3 using SPI interface in GPIF 32bit Mode is not possible

Anup S. posted on 20 May 2011 01:11 PM PST
Cypress Employee
51 Forum Posts

Hello,

 

SPI will not work with GPIF II 32-bit mode. More information on supported combinations can be found in the FX3 datasheet, which can be found in the main website.

 

Thanks,

Anup



Re: USB3.0 FX3 using SPI interface in GPIF 32bit Mode is not possible

Spectrum posted on 16 Feb 2012 11:37 AM PST
Senior Member
13 Forum Posts

Can you tell me why this is not possible? Also, if this cannot be done, what peripheral is available for low spped communication if the GPIF is used in 32 but synchronous mode?



Re: USB3.0 FX3 using SPI interface in GPIF 32bit Mode is not possible

aasi posted on 18 Feb 2012 12:16 AM PST
Cypress Employee
1090 Forum Posts

The other 3 low speed peripherals should be available. The SPI not being available is a hardware limitation.
GPIF II Designer makes it a point to give a pop-up when SPI and 32-bit are set together.

Regards,

Anand



Re: USB3.0 FX3 using SPI interface in GPIF 32bit Mode is not possible

Stas1967 posted on 20 Jun 2012 09:52 PM PST
Member
9 Forum Posts

Hi,

Is also all above  true in case I am using SPI interface for boot only(connected to SPI Eeprom)?

Thank you

Stas

 



Re: USB3.0 FX3 using SPI interface in GPIF 32bit Mode is not possible

aasi posted on 21 Jun 2012 10:34 PM PST
Cypress Employee
1090 Forum Posts

The loss of SPI functionality is due to FX3 being configured for 32-bit GPIF by the firmware. During boot the GPIF-II is not configured so you should be able to use the SPI for boot.

Regards,

Anand



Re: USB3.0 FX3 using SPI interface in GPIF 32bit Mode is not possible

Avishai posted on 21 Jun 2012 11:12 PM PST
Member
2 Forum Posts

 Yes,

But then one can't have remote FW upgrade.

I am not sure that "works" is correct system wise.

 

Good luck



Re: USB3.0 FX3 using SPI interface in GPIF 32bit Mode is not possible

aulucan posted on 12 Jul 2012 07:42 AM PST
Senior Member
19 Forum Posts

Hello,

 

SPI can still be used/worked in a GPIF 32bit mode design with GPIO mode as in the UsbSpiGpioMode example, can't it?

 

Regards,

Ali



Re: USB3.0 FX3 using SPI interface in GPIF 32bit Mode is not possible

RSKV posted on 13 Jul 2012 03:01 AM PST
Cypress Employee
848 Forum Posts

 Yes. It works if you have enough GPIOs (max 4) free in your application.

Regards,

sai krishna.



Re: USB3.0 FX3 using SPI interface in GPIF 32bit Mode is not possible

aulucan posted on 13 Jul 2012 06:08 AM PST
Senior Member
19 Forum Posts

Sai,

Thank you for your reply.

Ali






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