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When the FPGA is in SPI Master mode how does it take the data from the SPI Flash?

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hithesh123

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When the FPGA is in SPI Master mode how does it take the data from the sPI Flash.
Usually SPI flash has commands access data in a specifica page/bank etc.
 

Re: SPI Flash-FPGA interface

Your assumption is right, any read or write operation has to use the respective commands. But what are you exactly asking about?
 

Re: SPI Flash-FPGA interface

Hi;
If you mean boot from SPI (I mean your design is flashed in SPI and FPGA is configured by that SPI data)
FPGA has internal macros/hard coded SPI read/write functionalities. It is already put in FPGA by the manufacturer, you just need to configure bootstraps.

Hope helps
 
Re: SPI Flash-FPGA interface

emresel said:
Hi;
If you mean boot from SPI (I mean your design is flashed in SPI and FPGA is configured by that SPI data)
FPGA has internal macros/hard coded SPI read/write functionalities. It is already put in FPGA by the manufacturer, you just need to configure bootstraps.

Hope helps
Click to expand...

Okay. Before going thru the Flash datasheet, I thought the FPGA would be doing a simple SPI read.
 

Re: SPI Flash-FPGA interface

If you mean boot from SPI
Click to expand...
Does he? If so, hardware configuration load or booting a soft processor image? There are many ways to access a serial flash from an FPGA, the built-in configuration controller is one of them. Why we need to gues when hithesh123 can easily post a clear question?

I thought the FPGA would be doing a simple SPI read
Click to expand...
It actually does in some situations.
 

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