Ddr2 hp

Question

my sopc system includes A nios , a pio, an onchip memory ,and a ddr2 hp .

I want to use the ddr2 chip as my NIOSII program's running space.so,in IDE,i set the program memory (.text ) to the ddr2.

but when i debug(the program is a simple test program),the IDE tell me :

download is success.but verify is error.(the error address is my ddr2's address)!

otherwise , i use a ddr2 chip : SAMSUNG K4T41163QG-HCF7.

i don't know what's happened in ny system. there is something wrong in my DDR2 HP setting , SOPC timing clouser,or somewhere?

somebody can tell me how to use the DDR2 hp?

thanks a lot!

altera_forum · Answer

i test my system many times . the local_init_done_from_DDR2 is asserted. but ,when i download my nios program ,the IDE console gives me the error message:

Downloading 00000000 ( 0%)

Downloading 04028020 (97%)

Downloaded 18KB in 0.8s (22.5KB/s)

Verifying 00000000 ( 0%)

Verify failed between address 0x0 and 0x450B

Leaving target processor paused

altera_forum · Answer

address:0x0000000 is my ddr2's address.

altera_forum · Answer

It seems there is a communication problem to your ram.

Have you analyzed the timing in your system?

Are you using Classic or Timequest timing analyzer?

You can add Onchip-RAM to your system, and run the memtest-template from it to check your RAM hardware.

altera_forum · Answer

parva hai, i need a documentation regarding the pin details(function of every pin) of ddr_sdram controller. please help

altera_forum · Answer

hai ,i want to use ddr sdram hp.first of all i want to know how to access this.for this purpose ,is simulator is enough?

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Ddr2 hp

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