Re: Question regarding VCCIO of arria V SX series

Altera_Forum · ‎04-12-2016

Hi ,

I am planning to use 5ASXMB3G4F40I5N in my current project.

I am using Bank 3A and 3C for 3.3V LVCMOS signals.

so my question is can i use bank 3D for LVDS signals.

if i can use it then what will be the VCCPD for group ( 3A,3B,3C,3D )?

thanks and regards

mahima satsangi

Altera_Forum · ‎04-12-2016

Use Quartus to answer this question for you. Put a small project together for your chosen part. Constrain the I/O as you require, run it through the tools and look at the generated .pin file. It will tell you what to voltage to connect to the VCCPD pins.

Cheers,

Alex

Altera_Forum · ‎04-12-2016

Alternatively, refer to the guidelines in the cyclone v handbook (https://www.altera.com/en_us/pdfs/literature/hb/cyclone-v/cv_5v2.pdf). They are very clear. See the "guideline: use the same vccpd for all i/o banks in a group" section on page 5-18.

Cheers,

Alex

Altera_Forum · ‎04-12-2016

thanks for your reply.

I will look into it.

Altera_Forum · ‎04-13-2016

Hi,

.pin file is not getting generated. I believe fitter is not generating that report due to following error.

Error " Error (169215): VCCIO assignment (2.5V) on I/O Bank 3D cannot be applied

Error (169325): VCCPD3 cannot use 2.5V because it is using 3.3V

Info (169323): VCCIO 2.5V requires VCCPD 2.5V.

"

I have made the following assignments:

Bank VCCIO

3A 3.3V

3B 2.5V

3C 3.3V

3D 2.5V

Thanks and regards

Mahima Satsangi

Altera_Forum · ‎04-13-2016

Hi,

In the handbook, I hvn't found anything about using different VCCIOs within same group (3A,3B,3C,3D).