Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

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

Status
Not open for further replies.
H

hithesh123

Full Member level 6
Joined
Nov 21, 2009
Messages
324
Helped
1
Reputation
2
Reaction score
1
Trophy points
1,298
Location
lax
Activity points
3,548
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.
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top