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Altera_Forum
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12 years ago

Qsys problem in connecting Avalon-MM master and slave with different symbol widths

hi, i cannot connect avalon-mm master with a symbol width of 8 and avalon-mm slave with a symbol width of 9. i am trying to connect a 128-bit width master with 8-bit symbol of a clock crossing ...
Altera_Forum's avatar
Altera_Forum
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12 years ago

Hi, thanks.

I also think that your LPDDR2 case is similar to my QDDRII case.

In the current design, it is okay to use 16 pins from 18 pins of QDRII memory. I tried to do this, but the width of the external pins to memory cannot be changed (with the symbol width).

The value of "18" is fixed, and cannot be changed...

What I am trying is to export AvalonMM bus with symbol width of 8, and connect the exported ports of Qsys module to QDRII controller generated by MegaFunction Wizard.

If you have any other advices, please help me.

Micky