Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
18 years ago

DDR/DDR2 HP compiler - multiple devices

Hi, I am trying to drive two DDR devices from one instance. I have made the settings in the wizard, so I am getting two clock pairs, 2 cke's and so on. But the ras/cas/adress signals needs to ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
18 years ago

Hi,

yes the PHY maps the command signals directly to IO primitives.

The HP controller wizard does not mention no of devices.

So I would need to remove the IO primitives and double the command signals output from

the PHY for the signals in question: RAS/CAS/ADR//WE/BA.

That looks like I will mess up all the scripts. There has to be a smooth way around this.

Frank, the HP PHY will not allow you use multiple devices as far as I can see.

Where should I look?

I am gonna post this with Altera.

G