Occasional ContributorA system is currently using an Arria V with the Triple Speed Ethernet IP in PCS only configuration. The design is successfully communicating with other SGMII capable devices at 10/100/1000 speeds.
A requirement arose to add 2.5G SGMII support on the same device maintaining backwards compatibility with the lower 10/100/1000 speeds we already support.
What Intel IP can support that ?
Frequent ContributorHello,
Good day to you.
You may consider V-Series Transceiver PHY IP :
Regards,
Pavee
Occasional ContributorThanks for your input.
The FPGA in question is an Arria V: 5AGXBA5D6F35C6
1. Will this IP work on any GBx transceivers the device has ?
2. What about lower speeds ? Can the IP you suggested support 10/100/1000 as well as 2.5G ?
Frequent ContributorYes it can be done but we have not validated it.
What I would suggest is if you want to support both backplane 2.5G and standard 10/100/1000M, you may use TSE IP for SGMII interface and use transceiver PHY IP for 2.5G SGMII/1000Base-X and add control logic to switch interfaces based on detected link type.
Regards,
Pavee
Occasional ContributorRegarding your suggesting of "add control logic to switch interfaces based on detected link type"
How do you suggest to do that ?
From what I see, the IP populates the fabric up to and including the transceiver pin.
Are you suggesting to add some kind of high speed transceiver MUX between the 2.5G and 10/100./1000M IPs and the FPGA transceiver pin ?
Frequent ContributorHello,
Good day to you.
Yes, you may need control logics to identify which interface is active, MAC selection MUX which routes TX/RX data based on control logic but need to ensure only one MAC path is active at a time.
Regards,
Pavee
Frequent ContributorHello,
Good day to you.
Kindly let me know if my previous suggestion helps.
Regards,
Pavee
Frequent ContributorHello,
We didn't hear from you since last update. If you have a new question, feel free to open a new thread to get the support from Altera experts.
Otherwise, the community users will continue to help you on this thread.
Thank you.
