Hello. I am designing a carrierBoard for the ubiswitch.
I want to use Ports 0,9,10 in SGMII mode and I have selected DP83867ERGZR to be used as SGMII to cooper PHY.
Could You tell me if I could use that PHY? or should I select something different?
DP83867E is a pretty standard 10/100/1000BASE-T PHY with SGMII interface from Texas Instruments.
The 88E6393X has three PHY-less ports that support, Port 0, Port 9 and Port 10.
Port 0 supports:
Mode 1: SGMII/1000GBASE-X/2.5GBASE-X
Mode 2: 5GBASE-X
Mode 3: SFI/USXGMII
Ports 9 and 10 support:
Mode 1: SGMII/1000GBASE-X/2.5GBASE-X
Mode 2: 5GBASE-X
Mode 3: SFI/USXGMII
Mode 4: RGMII
Mode 5: RMII
Mode 6: MII
UbiSwitch puts only the SerDes pins on the stacking headers (see below), meaning you can’t use RGMII, RMII or MII on UbiSwitch. Since DP83867E supports SGMII though, that is not a problem for you.
So, you would need to connect your SGMII ports there.
I was going to go further in detail on this, but actually I think it’s easier if we just make and share an example schematic using the DP83867E for you. This will make your life a lot easier and avoid mistakes.
Give us a few days and we’ll share that for you.
Here is an example schematic showing the SGMII connection between DP83867E and UbiSwitch.
We also offer a free design review service. Once your design is complete, feel free to get in touch with us at info@botblox.org. We can sign your NDA if needed.
