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Altera_Forum
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20 years ago

Read and write 16 bits device via Avalon

Hi there, I have create a SOPC Builder component to have access to a USB peripheral controller. This USB controller has a 16 bits data bus et one address line (2 addresses: '0' and '...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

1.

Yeah, It is.

2.

You can specify the Timing of USB in the "avalon slave timing" of "interface" Tab. The time/ cycle you added will implement by your "system clock" in FPGA logic.

3.

I think it is the best/only choice, cause it is a "register" device. ( there are regesters in the device)

While the memory device, such as SRAM, flash should using "memeory(Dynamic addressing)" interface.

4.

" page 6-26 from Quartus II Handbook, Volume 4" talks about "The Avalon tristate address" not the avalon slave. Avalon slave will connects slave's A0 to Nios(master)'s A2..A0 depending on the data-width of your slave. SO what you test is right/normal/successful way.

Do you using "Add HDL files..." to start make your own comoponets? It is also meas: do you write a hdl to add the components?