Mity CPU Platforms » MitySOM-AM57X

03/12/2024

SS 06:17 PM PCB Development: RE: Ethernet Connectivity issues with DP83822

Hi,
Okay..will try with DP83822IFRHBR.
Thank you for your support.
With regards
Sandeep S Sandeep Sivadas

JC 05:09 PM PCB Development: RE: Ethernet Connectivity issues with DP83822

Sandeep Sivadas wrote in message#6594:
> Hi,
> ...
I don't know, I've never used an SFP in a design before. Jonathan Cormier

SS 04:03 PM PCB Development: RE: Ethernet Connectivity issues with DP83822

Hi,
Thank you for your prompt support.
Is there any modifications to be done in the kernel side for the fiber optic communication using SFP modules ?
With regards
Sandeep S
Sandeep Sivadas

JC 03:37 PM PCB Development: RE: Ethernet Connectivity issues with DP83822

Sandeep Sivadas wrote in message#6592:
> Hi,
> ...
Ahh good catch, I didn't notice those when looking through your schematic.
>
> ...
According to the datasheet: https://www.ti.com/lit/ds/symlink/dp83822i.pdf, dp83822if and dp83822... Jonathan Cormier

SS 02:58 PM PCB Development: RE: Ethernet Connectivity issues with DP83822

Hi,
The problem is solved now. We removed the 165 ohm resistance connected in the TDP,TDM, RDP and RDM lines. Now the ethernet connectivity is okay and ping also working.
Now we are facing another problem. We are planned for RJ45... Sandeep Sivadas

03/11/2024

JC 02:53 PM PCB Development: RE: Ethernet Connectivity issues with DP83822

> 3. In mux_data.h modified the code as shown below.
Did you also comment out or change the original MCASP2_AXR4 line. Just to make sure that pinmux isn't getting set twice. Jonathan Cormier

03/09/2024

SS 05:43 AM PCB Development: RE: Ethernet Connectivity issues with DP83822

Hi,
I will verify the voltage levels on each lines.
1. For "PRU2MII1RESETn" we are using GPIO 1_4 and modified the Kernel and uboot for GPIO 1_4. we made the modification in
/processor-sdk-u-boot/board/cl/mitysom-57x/board.... Sandeep Sivadas

03/07/2024

JC 09:31 PM PCB Development: RE: Ethernet Connectivity issues with DP83822

Sandeep Sivadas wrote in message#6587:
> Q: Do the link lights on the ethernet jack also go on and off?
> ...
If the phy link goes up and down, we can ignore the processor side of things. The phy itself handles establishing a link. ... Jonathan Cormier

SS 04:36 PM PCB Development: RE: Ethernet Connectivity issues with DP83822

Q: Do the link lights on the ethernet jack also go on and off?
Yes. Left side led of RJ45 is go on and off. When we connect to PC, the ethernet link is showing not connected.
With regards
Sandeep S Sandeep Sivadas

JC 02:41 PM PCB Development: RE: Ethernet Connectivity issues with DP83822

Sandeep Sivadas wrote:
> Hi,
> ...
Do the link lights on the ethernet jack also go on and off?
>
> ...
I don't see anything wrong with your schematic.
>
> ...
Jonathan Cormier

SS 11:35 AM PCB Development: Ethernet Connectivity issues with DP83822

Hi,
We designed our own custom AM5728 board with two DP83822 PHYs. Desired phy address are phy0 and phy 1.
In the schematic shown , we removed R219 to make it to PHY 1. The other DP83822 has COL pin pull down with 2.2k resistance is... Sandeep Sivadas