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Altera_Forum's avatar
Altera_Forum
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16 years ago

DDR2 SDRAM High Performance Controller - Parallel- and Serial-termination????????????

Well, I build my System via the SOPC-Builder.

Now I want to to the pinning at quartus. My Problem ist, that I got 2 signals where I dont have any idea what I should do with them.

There names:

oct_ctl_rs_value

oct_ctl_rt_value

The Manual tells me this:

ALTMEMPHY signal that specifies the serial termination value. Should

be connected to the ALT_OCT megafunction output

“Seriesterminationcontrol(oct_ctl_rs_value)

and

ALTMEMPHY signal that specifies the parallel termination value.

Should be connected to the ALT_OCT megafunction output

“Parallelterminationcontrol(oct_ctl_rt_value). What I have to do? I dont have any glue what these altera guys want from me.

2 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    16 years ago

    Well, ok as far as I found out I have to use a Altera Megafunction called Alt Oct. Its used for termination(calibration). Its needed for Stratix III Boards. There is no intern solution so u must use this Extra-"Feature".

    Well, I just working arround to get it work. ATM I just want to know how I should connect this megafunction to pins. Manual is a bit crap. At least for the pinning.

    http://www.altera.com/literature/ug/alt_oct.pdf