Activity
From 10/10/2025 to 11/08/2025
11/07/2025
- SL 04:38 PM MitySBC-Agilex5 FPGA Development: RE: MitySBC A5E
- Thank you for the information. I am guessing the pre-installed FPGA does not enable FMC_EN_3V3.
I will start with one of the available reference projects.
Best regards, Sung Lim - MW 04:24 PM MitySBC-Agilex5 FPGA Development: RE: MitySBC A5E
- Hi Sung,
From the datasheet (page 14):
"All power to the FMC connector is gated by FMC_EN_3V3 which is tied to pin CG134 of the FPGA."
This will enable the +12V FMC power supply and the +3.3V FMC power Supply. VADJ should alrea... - Two questions:
1. On the prototype board, FMC +12V and +3.3V do not appear to be driven. Is there a strapping option to supply the two voltages from the SBC?
2. Would it be possible to obtain the Quartus pro project for the base FPGA?...
11/06/2025
- MW 06:44 PM MitySOM-AM62, MitySOM-AM62A, & MitySOM-AM62P PCB Development: RE: SOM_62P Reset on LED_RTN
- Wondering if you could add a LPF filter (cap + R) across your FET to make the switch less aggressive. Kind of hacky, but it might work.
- AD 06:28 PM MitySOM-AM62, MitySOM-AM62A, & MitySOM-AM62P PCB Development: RE: SOM_62P Reset on LED_RTN
- That explanations seems probable, if I have any free time coming up I'll play around with the circuit on our side to get it working reliably.
For the time being we'll continue to not switch LED_RTN.
Thanks for the rapid reply! - MW 06:15 PM MitySOM-AM62, MitySOM-AM62A, & MitySOM-AM62P PCB Development: RE: SOM_62P Reset on LED_RTN
- Hi Adrian,
Haven't seen this before.
This is a snippet from the SOM schematic related to the Power Good LED and the LED_RTN Net:
!SOM_LED_PGOOD.png!
As you can see, the PMIC_PGOOD is AND-ed into the main MCU_PORz. It is an... - We have a series of switchable LEDs on board for basic debugging of various on-board supplies, and for completeness I've included the ability to sink current from LED_RTN (pin 2 on SOM) to get some visual output from the SOM.
In terms...
11/04/2025
- SG 05:25 PM MitySOM-5CSX Altera Cyclone V FPGA Development: RE: Building the MitySOM-5CSX
- Hi John,
Hope you are well. I'll go ahead and try and answer your questions and comments below!
* @Is there a specific example program/script, that I might have missed, to exercise an LED connected to the FPGA from a program/script...
11/03/2025
- MW 11:49 AM MitySOM-AM57X PCB Development: RE: Alternate part for card edge receptacle
- Hi Shankar,
STEP models and drawings for the reference heat spreaders can be found on this page:
https://support.criticallink.com/redmine/projects/mitysom_am57x/wiki/Heat_Spreader_Reference_Design
I will check on whether we ca... - BS 07:38 AM MitySOM-AM57X PCB Development: RE: Alternate part for card edge receptacle RE: Inquiry about Heat Spreader 94-900813-3
- Dear Michael,
We are planning to purchase the heat spreader (part number 94-900813-3) for the MitySOM-AM57F SOM board. Could you please provide information on where it can be purchased and the associated pricing? Additionally, if ... - JI 01:13 AM MitySOM-5CSX Altera Cyclone V FPGA Development: RE: Building the MitySOM-5CSX
- In the above, I don't know where the strike-thru lines came from.
- JI 01:12 AM MitySOM-5CSX Altera Cyclone V FPGA Development: RE: Building the MitySOM-5CSX
- Additionally, in comparing the provided sd card with the built one, I found that the directory, *scripts_auto* , does not exist. This is where the LED test (and some others) lives on the provided card.
Also, the following listing retu...
11/02/2025
- JI 02:47 AM MitySOM-5CSX Altera Cyclone V FPGA Development: RE: Building the MitySOM-5CSX
- This past weekend I was experimenting with the provided sd card and the examples. Specifically the LED example to light and change colors of D1 on the mitysom module. I got that to work ok. After doing a little digging, it appears tha...
10/27/2025
- JI 12:37 AM MitySOM-5CSX Altera Cyclone V FPGA Development: RE: Building the MitySOM-5CSX
- Hi Seth,
For the 1st bullet point above I followed your instructions using the *command line* and it worked. Great!
I login with *root* get the prompt, *root@mitysom-c5:~#*
I think the *unmount* instruction was the key.
Below, is ...
10/24/2025
- SG 07:51 PM MitySOM-5CSX Altera Cyclone V FPGA Development: RE: Building the MitySOM-5CSX
- Hi John,
Thank you for the additional details. *dd* typically will take a moment to return the prompt, it does on my end as well.
If the command itself returned earlier than anticipated there's a good chance something went wrong. I... - JI 07:20 PM MitySOM-5CSX Altera Cyclone V FPGA Development: RE: Building the MitySOM-5CSX
- Hi Seth,
All I did was extract the image and dd it right to the sd card. I will read in more detail your comments when I get home tonight and give it another go over the weekend…I’m doing this on my own time.
Something funny though.... - SG 03:09 PM MitySOM-5CSX Altera Cyclone V FPGA Development: RE: Building the MitySOM-5CSX
- Hi John,
Thank you for providing the 3 boot outputs. I've gone ahead and taken a look and I'll make some comments below.
* @My expectation was that the directly downloaded image would work similarly. I also cannot access the 256M ... - JI 03:19 AM MitySOM-5CSX Altera Cyclone V FPGA Development: RE: Building the MitySOM-5CSX
- Ok, so I downloaded the sd card from the website as instructed, and loaded it onto a fresh card.
I now have 3 _different_ boot outputs. I have attached 3 files with the outputs of each boot screen.
I included the output of the ori...
10/22/2025
- MF 01:46 PM MitySOM-5CSX Altera Cyclone V FPGA Development: RE: Building the MitySOM-5CSX
- John,
Taking a look at your output it appears like you successfully recompiled the SPL and UBOOT. The differences you are noticing are due to the SD card provided on the development kit having an older release of the software on it. Y... - JI 02:19 AM MitySOM-5CSX Altera Cyclone V FPGA Development: RE: Building the MitySOM-5CSX
- Hi, so I was able to make uboot and an sd card image. I took the image and loaded it to a blank sd card and powered up the board. I stopped it at the autoboot countdown.
Then I swapped out the sd card to the one that was provided in t...
10/21/2025
- AF 06:55 AM MitySOM-5CSX Altera Cyclone V FPGA Development: RE: MitySOM-5CSX (5CSX-H6-42A-RI) stops at “Deasserting all peripheral resets” — request for guidance
- Hi Mike,
Thanks for your quick reply.
Here’s what I’ve tried and what I’m seeing:
Reseated the SOM in the DIMM connector → same behavior as before.
Swapped SOMs between kits → when I install the good SOM into the known-problematic... - JI 12:32 AM MitySOM-5CSX Altera Cyclone V FPGA Development: RE: Building the MitySOM-5CSX
- Mike,
Thanks. Understood.
Regards,
John
10/20/2025
- MF 04:26 PM MitySOM-5CSX Altera Cyclone V FPGA Development: RE: MitySOM-5CSX (5CSX-H6-42A-RI) stops at “Deasserting all peripheral resets” — request for guidance
- Hi Atef,
It sounds like based on your findings the SOM module is the issue. It looks like you may have tried to reply to this post via email, which I do not think works for attachments. Can you either reply again and type the serial n... - AF 03:41 PM MitySOM-5CSX Altera Cyclone V FPGA Development: RE: MitySOM-5CSX (5CSX-H6-42A-RI) stops at “Deasserting all peripheral resets” — request for guidance
- [https://res.public.onecdn.static.microsoft/assets/mail/file-icon/v2/photo_16x16.png]1000008159.jpg<https://sascailabs-my.sharepoint.com/:i:/g/personal/atef_dorai_cailabs_com/EfLXHLTfMzNHoDiG-PRr9sMBAmPRqgLMED5K8e0Jwf8zUg>
[https://r... - MF 03:03 PM MitySOM-5CSX Altera Cyclone V FPGA Development: RE: MitySOM-5CSX (5CSX-H6-42A-RI) stops at “Deasserting all peripheral resets” — request for guidance
- Hi Atef,
Thank you for the thorough debug details.
# Have you successfully used this development kit before? Or are these the symptoms you are experiencing after first receiving this development kit?
# Could you provide the serial... - Hello Critical Link Support,
I’m evaluating a MitySOM-5CSX module (part number 5CSX-H6-42A-RI) and I’m trying to run a test bitstream on the Cyclone V FPGA. I used the SD-card image from your wiki for this module:
Image source: htt... - MF 02:08 PM MitySOM-5CSX Altera Cyclone V FPGA Development: RE: Building the MitySOM-5CSX
- John,
For some background, we have a single Quartus reference design project we have setup for the Cyclone V platform. In order to make it easier for end users, we generate this project for every variant of the platform we have and th...
10/19/2025
- JI 01:13 AM MitySOM-5CSX Altera Cyclone V FPGA Development: RE: Building the MitySOM-5CSX
- Hi. Taking a few steps back, I was comparing the instructions from
https://support.criticallink.com/redmine/projects/mityarm-5cs/wiki/Building_fpga_231 ,
https://support.criticallink.com/redmine/projects/mityarm-5cs/wiki/Building_ub...
10/17/2025
- SL 07:30 PM MitySBC-Agilex5 FPGA Development: RE: MitySOM-A5E PCIe HIP configuration qudstion
- Yes, agreed. It would be a good upgrade path without jumping the SOC family.
- MW 07:05 PM MitySBC-Agilex5 FPGA Development: RE: MitySOM-A5E PCIe HIP configuration qudstion
- Hi Sung,
With a higher speedgrade option, you can get PCIe x4 gen 4 if bandwidth is a concern and the other end point / root port supports it.
With regards,
Mike - SL 06:39 PM MitySBC-Agilex5 FPGA Development: RE: MitySOM-A5E PCIe HIP configuration qudstion
- Thank you again for the prompt response. PCIe x4 gen 3 (4GB/s bus limit) should be sufficient for this generation of products.
- MF 05:11 PM MitySBC-Agilex5 FPGA Development: RE: MitySOM-A5E PCIe HIP configuration qudstion
- Sung,
All of our current Agilex 5 platforms are E-Series, Device Group B devices. Therefore, they only support up to PCIe x4 configurations (not x8). You need a D-series device to support x8.
- Mike - In the MitySOM-A5E datasheet, "up to six x4 PCIe 4.0 hard IP blocks" are supported.
Can some of the PCIe be configured as x8 (three x8 instead of six x4, for example)?
10/16/2025
- TC 05:04 PM MitySOM-AM57X PCB Development: RE: Alternate part for card edge receptacle
- Great, thank you for the update!
- SG 03:36 PM MitySOM-5CSX Altera Cyclone V FPGA Development: RE: Building the MitySOM-5CSX
- Hi John,
I appreciate all the info, no need to be sorry whatsoever! I'll go ahead and try and answer your questions and concerns below.
* @Read thru the page and figured that I could just use this tarball so I don't have to build t... - JI 01:20 AM MitySOM-5CSX Altera Cyclone V FPGA Development: RE: Building the MitySOM-5CSX
- I am using:
Quartus prime 23.1
Ubuntu 24.04.2 LTS ( I noted that this was tested on Ubuntu 22.04...)
1. I went to the page recommended above and downloaded "mitysom-image-base-mitysom-c5.tar.gz"
2. Did some exploring and fo...
10/14/2025
- BS 04:54 AM MitySOM-AM57X PCB Development: RE: Alternate part for card edge receptacle
- Hi Thomas,
Thank you for your continued support and for the quick responses to our queries — we really appreciate your timely assistance.
we are using the new connector you suggested in our latest design. Additionally, we a...
10/13/2025
- TC 01:48 PM MitySOM-AM57X PCB Development: RE: Alternate part for card edge receptacle
- Hello Shankar -
Just checking in on this, were you able to find supply to meet your needs?
Is your board already designed, or can you work with one of the suggested alternates?
Finally, does your design use the Hirose DF40 co...
10/12/2025
- JI 10:50 PM MitySOM-5CSX Altera Cyclone V FPGA Development: RE: Building the MitySOM-5CSX
- Ok, Thanks, I'll look into it.
Just so you know, I am quite the novice with this, so, I ask that you please be patient with me if I ask very basic questions.
10/10/2025
- MW 12:26 PM MitySOM-AM57X PCB Development: RE: Alternate part for card edge receptacle
- FYI Heilind has some in stock.
https://www.heilind.com/jaemm70-314b1-2-r300p.html?utm_source=findchipsam&utm_medium=buy-bnl-heilind - MW 10:02 AM MitySOM-AM57X PCB Development: RE: Alternate part for card edge receptacle
- The Aces connector listed on that page (91781-31408-001) is in stock in Digikey
https://www.digikey.com/en/products/detail/aces-connectors/91781-31408-001/16671838
We list it in a second column because our test fixture and developm... - BS 05:05 AM MitySOM-AM57X PCB Development: RE: Alternate part for card edge receptacle
- Dear Michael,
Thank you very much for your prompt response.
Among the three options listed, two appear to be obsolete, and the remaining one has been out of stock for an extended period. Could you please suggest an alternat...