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Honored Contributor
Honored ContributorCyclone III and MLVDS
Hi, All.
I am new here, so sorry if I posted this in a wrong place. We are developing a boad that will use a Cyclone III device to communicate with other boards over the backplane. The idea is to have several boards transmitting signals to this Cyclone III device. Currently we are talking about a point-to-point connection, but in the future we might wish to resort to a bus that would connect all the boards over the backplane. We wish to use some sort of LVDS connection that would enable us to build a bus later and will support live insertion as well. This leads us to either M-LVDS or B-LVDS. At this stage, we are planning to have only one board with the Cyclone III device, all the other boards will have the appropriate (M-LVDS or B-LVDS) buffers. The question is therefore: 1) Will Cyclone III communicate correctly with M-LVDS (this is the preferrable solution) buffers? 2) How can we make sure that the bus won't be affected by inserting / removing the board with the Cyclone device on it? Thanks in advance, Pavel6 Replies
Altera_Forumthanks a lot! :)
- Altera_Forum
You can certainly use MLVDS without loosing your signal integrity.
- Altera_Forum
I'm not aware of the differencs in detail, but expect, that they are compatible in a practical view.
- Altera_Forum
well, I've read the doc and it anwers my question almost perfectly.
the only thing is that we prefer to use MLVDS and not BLVDS. I know that these standards are much the same, but there is a slight difference in the voltages. My question is: will this difference affect the application? thanks a lot for your help. - Altera_Forum
no, I haven't seen it.
thanks a lot! - Altera_Forum
Did you see the Application Note 522, it is exclusively discussing the M-LVDS topic?
http://www.altera.com/literature/an/an522.pdf
