Mity CPU Platforms » MitySOM-5CSX Altera Cyclone V

01/08/2014

AD 04:57 PM FPGA Development: RE: I/O voltage

Hi Nigel,
Below you will find the details to support additional IO standards. I believe this covers all the necessary details...
h2. MityARM-5CSX VIO Support
h3. VCCPD Power and Support for +3.0 or +3.3V Standards
The I/O ba... Adam Dziedzic

ND 01:53 PM FPGA Development: RE: I/O voltage

Any update on whether the dev kit can be configured for 3.3v I/O?
Thanks,
Nigel. Nigel Doe

12/23/2013

ND 10:46 AM FPGA Development: RE: I/O voltage

No problem, it can wait a while.
Sounds like the SOM may have been catered for. Any thoughts on the dev kit or do you need to wait for the designer to get back?
Thanks.
Nigel. Nigel Doe

MW 09:03 AM FPGA Development: RE: I/O voltage

Hi Nigel,
The best guy to answer this question is on break this week and a good chunk of next week, can you wait for an answer?
Looking at the schematic, VCCPD3B4A is driven by a small compare/mux circuit that selects 2.5 V if VIO_... Michael Williamson

ND 08:15 AM FPGA Development: I/O voltage

I would like to interface the MityARM-5C SX dev kit to an existing piece of equipment for evaluation purposes, however this equipment uses 3.3v I/O. Is seems from the schematic that the bank I/O for the FPGA signals on the HSMC interface... Nigel Doe

12/16/2013

12:23 PM FPGA Development: RE: HPS Memory Controller

Hi Dan,
We figured it out last week. So we are fine with this for now.
Jack Anonymous

12/12/2013

05:17 PM FPGA Development: RE: HPS Memory Controller

Hi Dan,
I'm still confused about this. Would it be possible to provide an example of multiple packets?
For example two packets each with a counter.
Thanks!
Jack Anonymous

12/10/2013

DV 06:36 PM FPGA Development: RE: HPS Memory Controller

The descriptors are pushed onto a descriptor FIFO that the dispatcher reads from to start each transaction. So with setting the go bit, the descriptor will be written on to this FIFO.
To send multiple packets you will have to push mul... Daniel Vincelette

05:18 PM FPGA Development: RE: HPS Memory Controller

Hi Dan,
Is there any timing diagram with the SGDMA? I want to control some of the signals directly in the FPGA.
Thanks!
Jack Anonymous

04:49 PM FPGA Development: RE: HPS Memory Controller

Hi Dan,
I'm confused about this, does the Go signal go to "0" after each transfer such that I have to toggle it back to "1"?
I tried doing that but it didn't work.
Could you provide exactly what needs to be done to send multiple... Anonymous

DV 04:28 PM FPGA Development: RE: HPS Memory Controller

Yes, you need to set the go bit so the dispatcher knows that the descriptor is ready to be read.
Dan Daniel Vincelette

12:17 PM FPGA Development: RE: HPS Memory Controller

Hi again,
Just reading through the document. Do I have to set GO to '1' each time I update the descriptor?
Thanks!
Jack Anonymous

12:12 PM FPGA Development: RE: HPS Memory Controller

Hi Dan,
I'm changing the write address in the descriptor in the VHDL. But it's still only writing to the first address and not writing to the subsequent address that I changed to. Is there something else that I have to do to update th... Anonymous