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From 07/09/2021 to 08/07/2021

08/03/2021

05:23 PM PCB Development: RE: Note on MM70-314-310B2-1-R500
Oh wow! Thank you for the note Lucas!
Dan
Daniel Vincelette
02:07 PM PCB Development: Note on MM70-314-310B2-1-R500
Dropping a note that when I was ordering parts for our carrier board prototypes, I wound up ordering the JAE MM70-314... Lucas Uecker

08/02/2021

03:55 PM PCB Development: RE: Ethernet PHY
Hi Lucas,
That's awesome to hear, thank you for the update!
Also as a note, you could try adjusting the skew se...
Daniel Vincelette
03:45 PM PCB Development: RE: Ethernet PHY
Found the problem; it was right between my ears.
I was careful to alter the symbol for the KSZ9031 so that it was ...
Lucas Uecker

07/16/2021

01:10 PM Software Development: RE: Reading out the LTC2945
Thanks for the information Tim, that helps a lot.
I've got a custom dev tree, but then I know where to look and copy...
Jonas Mair
01:05 PM Software Development: RE: Reading out the LTC2945
Jonas,
the schematic for the baseboard is available here... https://support.criticallink.com/redmine/attachments/dow...
Tim Iskander
09:34 AM Software Development: Reading out the LTC2945
Hey,
I am currently benchmarking my design and want to know the power draw by the system. Under https://support.cr...
Jonas Mair

07/15/2021

05:40 PM Software Development: RE: USB Powered Hub and FTDI Cable
Lucas,
I have found a design that we've used that has the same USB hub that you're using. And after comparing it w...
Daniel Vincelette
04:20 PM Software Development: RE: USB Powered Hub and FTDI Cable
Dan-
I shorted R19, R31, and R34 in the above schematic and removed R30, C7, and C15.
After a USB storage drive...
Lucas Uecker
04:38 PM PCB Development: RE: Ethernet PHY
The ethernet section.
!Eth0.png!
Lucas Uecker
04:31 PM PCB Development: RE: Ethernet PHY
Hi Dan,
It does show no link detected. We will poke around further.
Thanks!
Travis Rawson
03:55 PM PCB Development: RE: Ethernet PHY
Hi Lucas,
It looks like the MAC does see the phy because of the following line:...
Daniel Vincelette

07/14/2021

09:49 PM Software Development: RE: USB Powered Hub and FTDI Cable
Thanks Dan!
I'll try the modifications as soon as I can.
Lucas Uecker
09:32 PM Software Development: RE: USB Powered Hub and FTDI Cable
Hi Travis and Lucas,
Thank you for the info!
I've compared your schematic with a USB 2 hub(TUSB4020BIPHP) that ...
Daniel Vincelette
06:51 PM Software Development: RE: USB Powered Hub and FTDI Cable
The Model number is: 80-000705RC-9
The Serial number is: 19032369
I attached the dmesg results below. It appears ...
Travis Rawson
06:28 PM Software Development: RE: USB Powered Hub and FTDI Cable
And the relevant section of SOM connector:
!USBpic2.png!
Lucas Uecker
06:09 PM Software Development: RE: USB Powered Hub and FTDI Cable
USB section schematic.
!USBpic.png!
Lucas Uecker
06:02 PM Software Development: RE: USB Powered Hub and FTDI Cable
Hi Lucas,
Have you tried using an unaltered version of our development SD Card on your baseboard to see if it beha...
Daniel Vincelette
04:16 PM Software Development: RE: USB Powered Hub and FTDI Cable
I think there was a hardware issue on that version of the board to begin with, but similar problems on a new board re... Lucas Uecker
09:46 PM PCB Development: RE: Ethernet PHY
Hi Dan-
I've attached the full dmesg in a text file. Or do you mean the full text from the debug UART on bootup?
...
Lucas Uecker
09:34 PM PCB Development: RE: Ethernet PHY
Hi Lucas,
Can you post your full boot log? With that I should be able to see if the ethernet MAC at least finds th...
Daniel Vincelette
04:05 PM PCB Development: Ethernet PHY
I seem to be having trouble with the ethernet PHY on carrier board. I've tried to duplicate the PHY that is on the Cr... Lucas Uecker
 

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