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Altera_Forum
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19 years ago

DDR2 on Stratix II GX PCI-E Dev kit malfuncitoning

hi, I have Stratix II GX PCI-E Dev kit. I have already successfully ported NIOSII, On-chip RAM, JTAG UART, PIO LED, PLL, MY own LED on it and it works. I had so much trouble with DDR2. I ch...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
18 years ago

I am sorry to trouble you. I want to ask you a question.

Does it use external parallel resistors on DQ and DQS pins between stratixII Gx and DDR2 chips on Stratix II GX PCI-E Dev board.

Now I am designing a stratix III pcb board with two DDR2 chips.

The space of the pcb board is limited. It can't place so many termination resistors.

I wonder whether the external parallel resistors is necessary.

I don't have the schematics of Stratix II GX PCI-E Dev board.

I look forward to your answer.

Thanks.

My Email [email protected]