 Fri Apr 9 21:56:54 2021, Sean Quinn, Unexpected noise in muxout: t_samp related?
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Yes, there is some systematic board noise on this prototype, unfortunately
Ok, then it seems the other post I made might still belong in this thread after all. |
 Mon Mar 23 15:03:28 2020, Ajay Krishnamurthy, USB trigger issue
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Hello,
I had forgotten to disable the turn off the power to the USB drive on Windows and DRS4 stopped triggering. Now, we are all on quarantine and
I am unable to reset the board to normal function. Are there any commands to reset the board remotely. I tried all of the default Windows based solutions |
Tue Sep 10 10:31:30 2013, Akira Okumura, USB connection stops 
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Hello the DRS4 team,
I and some of my colleagues are using DRS4 evaluation boards (ver. 3) for the R&D of the Cherenkov Telescope Array project. During
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Wed Sep 11 02:41:28 2013, Andrey Kuznetsov, USB connection stops
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Hi,
although I don't have a chance to test your code, it looks very similar to what I am using.
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Wed Sep 25 14:42:00 2013, Akira Okumura, USB connection stops
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Hello Andrey,
Thank you for your advise. But we never terminated the program before closing and deleting the DRS object. What we did was just executing the program multiple |
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Wed Jan 15 15:48:55 2014, Stefan Ritt, USB connection stops
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Hi,
finally I found some time to look into this problem, sorry for the late delay.
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Tue Oct 7 14:09:02 2014, Stephane Debieux, USB Microcontroller firmware
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Hi,
I'm trying to recompile the USB microcontroller firmware starting from the drs_eval.c file but I'm not able to get a .iic file close to the one
provided with the eval board. It seems to me that this drs_eval.iic file does not match the drs_eval.c and drs_eval.hex files or that I'm doing something |
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Mon Oct 13 16:46:56 2014, Stefan Ritt, USB Microcontroller firmware
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Stephane Debieux wrote:
Hi, |
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Mon Oct 13 17:08:40 2014, Stephane Debieux, USB Microcontroller firmware
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Stefan Ritt wrote:
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Mon Oct 13 17:14:58 2014, Stefan Ritt, USB Microcontroller firmware
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Stephane Debieux wrote:
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Tue Oct 14 16:21:07 2014, Stephane Debieux, USB Microcontroller firmware
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Stefan Ritt wrote:
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Tue Oct 14 16:29:12 2014, Stefan Ritt, USB Microcontroller firmware
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Stephane Debieux wrote:
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Tue Oct 14 16:34:45 2014, Stephane Debieux, USB Microcontroller firmware
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Stefan Ritt wrote:
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Tue Oct 14 16:38:14 2014, Stefan Ritt, USB Microcontroller firmware
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Stephane Debieux wrote:
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Tue Oct 14 16:51:37 2014, Stephane Debieux, USB Microcontroller firmware
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Stefan Ritt wrote:
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Thu May 21 07:38:05 2020, Keita Mizukoshi, Type check at DOFrame.h in official software
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Hi,
I've failured to compile official software. The cause is the following line. |
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Fri May 22 13:24:51 2020, Stefan Ritt, Type check at DOFrame.h in official software
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The software is a bit outdated, I will soon make a new release.
In meantime, you can replace that like with
bool GetRefclk(int board) { return m_refClk[board]; } |
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Fri Feb 26 17:05:26 2021, Tom Schneider, Trouble getting PLL to lock
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Hello,
I am working on a custom PCB design with the DRS4 chip, and I can't get the PLL to lock. I'm feeding CLKIN with a 1MHz CMOS clock
(REFCLK- tied to VDD/2), and I'm using the same loop filter as the eval board. I see from the datasheet that the PLL is enabled by default, |
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Fri Feb 26 17:59:14 2021, Stefan Ritt, Trouble getting PLL to lock
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I guess you mean "1 MHz clock at REFCLK+", and not CLKIN, there is no CLKIN, just a SRCLK, but that is someting else!
There could be many reasons why this is not working. It's hard for me to debug your board without actually having it in hands. So just some
ideas: |
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Fri Feb 26 18:33:52 2021, Tom Schneider, Trouble getting PLL to lock
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Stefan,
Thanks for responding so quickly. Yes I have my clock source going to REFCLK+ (CLKIN is the signal name on my schematic). BIAS is
0.7V exactly, /RESET is high, A0-A3 are 0x0000, and the loop filter has a 4.7nF cap to GND with a 130ohm resistor + 1uF cap in parallel, just like the |