Forum Discussion
Occasional ContributorClarification on TX/RX P&N Invert feature support in TSE IP core
Hi,
Yes, when you enable the TX/RX P&N Invert options in the TSE IP Analog Parameters GUI, you must also perform the Attribute Access Method steps (as described in GTS Attribute Access Method Example 3) after entering user mode.
This requirement applies because the TSE IP uses the same underlying PMA attributes as the GTS PHY. The GUI setting alone doesn’t apply the inversion until the attribute access sequence is executed.
Best Regards,
Sahil Patni
New ContributorHi,
Regarding your first point - the GTS Transceiver PHY User Guide: Agilex™ 5 FPGAs and SoCs (version 25.1, “3.3.11. Analog Parameter Options” section) marks the TX/RX P&N Invert options as “Preliminary – pending hardware verification” because these features had not yet been validated on hardware at that time. Starting from Quartus Prime Pro 25.1.1, the features were successfully verified on hardware.
Q: Are these features expected to function in Quartus Prime Pro 25.1.1 and Quartus Prime Pro 25.3 when used in the TSE IP core?
A: Yes, these features are supported and functional starting from version 25.1.1 and later, including 25.3.
Q: What happens if we enable these options in Quartus 25.1, where they were not yet supported in hardware?
A: While the feature may still compile and appear to work, it was not hardware-verified in 25.1, so we recommend using 25.1.1 or later for reliable operation.
Best regards,
Sahil Patni
Occasional ContributorHello,
Thank you for your detailed reply.
Based on the following documentation:
3.3.11. Analog Parameter Options
When using the Analog Parameter GUI options to invert the PMA P and N pin polarity, it mentions that after entering user mode, the Attribute Access Method steps (as described in the “GTS Attribute Access Method Example 3” section) must be executed.
Could you please clarify if the same requirement applies when the TX/RX P&N invert options are enabled through the Analog Parameters in the TSE IP core?
In other words, is enabling these options in the GUI sufficient for the TSE IP core, or do we also need to perform additional steps similar to those required for the GTS?
Best regards,
- Sahil_Patni
Hi,
Yes, when you enable the TX/RX P&N Invert options in the TSE IP Analog Parameters GUI, you must also perform the Attribute Access Method steps (as described in GTS Attribute Access Method Example 3) after entering user mode.
This requirement applies because the TSE IP uses the same underlying PMA attributes as the GTS PHY. The GUI setting alone doesn’t apply the inversion until the attribute access sequence is executed.
Best Regards,
Sahil Patni
- Sahil_Patni
Hi,
I believe all your queries have been addressed.
If you have no further questions, please mark this thread as Solved for closure.If you have a new question, feel free to start a new thread to get support from Altera experts.
Best regards,
Sahil Patni- fa_fpga_enthusiast
Hello,
Thank you for your reply.
We will try the proposed solution in the near future.
If we encounter any issues, we’ll open a new thread.This thread can be closed for now.
Best regards,
