Forum Discussion
Altera_Forum
Honored Contributor
19 years agoI am still having problems with the kernel taking over 90 seconds to boot...but it's not essential that it be any faster so I'm not worrying about it for now.
HOWEVER, I am also still having problems reading data out of SDRAM fast enough. I need to read 1 64-bit word every clock cycle (26.25MHz). If I wait for the read_data_valid signal, I get 1 word every 8 clock cycles. I created an avalon master port to perform pipelined master read transfers to retrieve the data from the DDR2 SDRAM on the Cyclone II DSP Board. I believe the problem lies somewhere in my state machine to control the master read transfer. I have read all the documentation i can find on how to do master read transfers but can't find my problem. Does anyone have some example code they'd be willing to share?? Thanks.