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CAlex
Contributor
ContributorQuartus Prime and avalon mm bridge bit width meaning
Hi, Im so confused about each settings on width settings in quartus prime. 1. If Im not wrong, every address in QP is byte. So 0x1 = 8bit instead of 1bit? Why? 2. In HPS, what is the meaning of t...
CAlexContributor
ContributorYes,
1.if I set ava MM bridge to 32 data width and 8 symbol width, then each time the ava mm bridge will read 32 bit or 32*8 = 256 bit?
2.what is the use of symbol width?
3.if im transferring a 48 bit data from ip to hps through avalon mm bridge, will it transfer 2 32-bit long words?
Thank you.
sstrell
Super Contributor
Super Contributor1) No, it's still a physical 32-bit bus so 32 bits.
2) Symbol width is for data organization. With a 32 bit bus and a symbol width of 8 (the default), 4 symbols would be transferred per clock cycle.
3) If your bridge is set to 32 bits wide, then yes.
- CAlex
Thank you for your answer, which is precise and clear.
Please have a good day
