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Configuration design for Xilinx FPGA
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Mercury



Joined: 07 Oct 2003
Posts: 42
Post12 Feb 2005 9:22   

Configuration design for Xilinx FPGA
I'm designing a Spartan 3 dev board, which will have a USB interface via Cypress 8051 EZ-USB chip. I need to configure the Spartan3 via on-board flash or via USB.
The 8051 @ 48MHz has only one 8 bit port for general usage. I thought of using an SPI flash ( 4 lines ) and connect the other 4 lines to FPGA. This would work, but since mcu aren't good at shifting data through ports fast, I reckon It would take about a minute to send all 1,6 MBits of conf data. I would really like to have something flaster. So what would you do if you were me?

George
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cyr



Joined: 10 Jan 2005
Posts: 54
Helped: 4
Location: Sweden
Post12 Feb 2005 13:24   

Re: Configuration design for Xilinx FPGA
I would put a small CPLD on the board, and let it do the shifting. It would be connected to the flash, the uC and the FPGA.
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