board setting for DDR2 HP core

Hi all,

When I use DDR2 HP core, I find there is page for board setting include ck/ck# slew rate, addr/command slew rate, DQS/DQS# slew rate, DQ slew rate.

How can I know these parameters?

If I don't change these parameters when I generate DDR2 HP core(use the default value provided by altera), my DDR2 HP core can work or not?

Regards

Tom