02-03-2010 09:36 AM
Hi there,I use the Altera EP3C120F780 Development board, and try to load files into the onboard flash memory. therefore i build a project in the (in the Screenshot). if i try to get the cfi-table like its explained in the flash-programmer-pdf i just get no-cfi table found at (base address). Base-address should be right, also the sopc-system but im not sure of the timings 4 the flash-memory-controller in the sopc. i looked in the datasheet of the flash device 4 the timings and thought that the timings should be setup:75ns; wait:35ns; hold:35ns but im not sure. and there is another problem if i use a clock higher then 50MHz 4 the NIOS2 it dont responds so i use 50MHz 4 the NIOS2 and 200MHz 4 the flash-controller( i also tried 50 MHz). if anybody got a clue, pls help i trying since 2 days -.- greets
02-08-2010 03:17 PM
I still cant get any response from the flash, i also put Data(0) PIN of my output from the SOPC system floating.Is noone of Altera here who got a clue? Is sth with the board wrong? or is the flash memory not accassable?
02-09-2010 07:39 AM
its version 9.1but i think i got the solution. the pin READ_busy was connected with READ_N of my design. but there are still some problems with the timing i think it should be setup:35ns; wait:75ns; hold:35ns if i interpretet the datasheet right but i dont get the CFI-table correct. maybe im wrong or i've missunderstood the timings or could it be that the setup times of the datasheet are not right ones cause i thougt it should be the flash with 110 ns Readcycle time. thx 4 reply