Forum Discussion
Altera_Forum
Honored Contributor
13 years agoRAM and FLASH shared bus don't worked
Hello everyone, I developped my own custom board which have MT48LC16M16 (Micron SDRam), S29AL032D (Spansion Flash) and Cyclone III EP3C25. RAM and FLASH share data and address bus. The Flash me...
Altera_Forum
Honored Contributor
13 years agoHi,
--- Quote Start --- Now i can program the flash via JTAG module but the problem is that the program (just blinked led) does'nt worked after programming the flash (already reset), this program work well with ram! --- Quote End --- You surely mean the flash that shared address and data bus (S29AL032D (Spansion Flash)), don't you ? Then your FPGA hard design (SOPC + custom logic) is OK. I see on your attached image that multiple SOPC components have the same base address 0x00000000, but I see no error warning ?! Do you configure correctly the Spansion flash in SOPC : timings (very important), reset_n, byte enable, chip select, write_n..., dynamic/native, data bus with.... ? Note : SOPC will be discontinued and replaced by Qsys. But for you, keep with SOPC.