Occasional Contributor
Occasional ContributorHello
I am trying to configure EP2AGX Arria® II GX using EPM240 Max ii CPLD and on board having CFI Flash js28f256m29ewh
In my case our custom Board having Flash Address bus A0 to A24 bus and Data D0..D7 Bus connected with FPGA CEn, OEn, WEn with FPGA
In case of cpld we have only Flash Address bus ,CEn and OEn, pins WEn not connected with CPLD and also there is no data bus between cpld an flash
So That's why I am confuse how to program flash memory
Is it with from CPLD Or FPGA because of Flash Data Bus only connected with FPGA configure data 8 bit port like DATA0 to DATA7
That s why I asked you
In your Above case I think its Big Endian and Little endian Issue I did this issued in PIc32 MPU
Thanks for your Reply knowledgeable
Nome
Occasional Contributorhi nome ,
In ur board there is no flash data bus lines connected to ur P2AGX Arria® II GX or EPM240 Max ii CPLD.
CFI Flash js28f256m29ewh for this flash if there is no data lines u cannot use it .
its like waste piece in board.
Occasional ContributorHello praveenkumar
As above I told Data Bus only connected with FPGA EP2AGX Arria® II GX
No Data Bus connected with CPLD even no WEn pin connected with CPLD
So That's why I am confuse how to program flash memory by CPLD OR FPGA
Thanks
Nome
Occasional Contributorhi nome , as u said
Data Bus only connected with FPGA EP2AGX Arria® II GX
No Data Bus connected with CPLD even no WEn pin connected with CPLD .
the u can program it with ur fpga only.
i dont know why u r using cpld . there is no option for loading through jtag.
u can program ur flash by using fpga .
