Transceiver data corruption

Hi CheepinC_altera​ 

Sorry I did not get back to you earlier - this message was buried in my inbox.

The analogue settings for the GTS TX/RX: 

TX:
   Post_tap_1:0
   Main_tap:55
   Pre_tap_1:0
   Pre_tap_2:0

RX:
    High Frequency VGA Gain:0
    High Frequency Boost:0
    DFE Data Tap 1:0

I added the transceiver toolkit in my design:

...
    .intel_directphy_gts_0_i_reconfig_clk_clk                               (CLK_100_B2B_p),
    .intel_directphy_gts_0_i_reconfig_reset_reset                           (agilex_reset),
    .intel_directphy_gts_0_reconfig_write                                   (1'b0),
    .intel_directphy_gts_0_reconfig_read                                    (1'b0),
    .intel_directphy_gts_0_reconfig_address                                 (17'b0), // single PMA lane
    .intel_directphy_gts_0_reconfig_byteenable                              (4'b0),
    .intel_directphy_gts_0_reconfig_writedata                               (32'b0),
    .intel_directphy_gts_0_reconfig_readdata                                (),
    .intel_directphy_gts_0_reconfig_waitrequest                             (),
    .intel_directphy_gts_0_reconfig_readdatavalid                           (),
...

In SignalTap:

So as you can see, the GTS clocks are locked well.

In the TransceiverToolkit (TT):

Dec 18, 2025 3:05:34 PM Intel Agilex 5 _ Agilex 3 Transceiver Toolkit: agilex_5_agilex_3_transceiver_toolkit1766070211497
INFO: Finished eye width measure

Dec 18, 2025 3:05:34 PM Intel Agilex 5 _ Agilex 3 Transceiver Toolkit: agilex_5_agilex_3_transceiver_toolkit1766070211497
INFO: 0.132

Dec 18, 2025 3:05:34 PM Intel Agilex 5 _ Agilex 3 Transceiver Toolkit: agilex_5_agilex_3_transceiver_toolkit1766070211497
INFO: 26.304 ps

Dec 18, 2025 3:05:34 PM Intel Agilex 5 _ Agilex 3 Transceiver Toolkit: agilex_5_agilex_3_transceiver_toolkit1766070211497
INFO: Starting eye height measure

Dec 18, 2025 3:05:39 PM Intel Agilex 5 _ Agilex 3 Transceiver Toolkit: agilex_5_agilex_3_transceiver_toolkit1766070211497
INFO: Core0_Pos_middle_eye 46.550000000000004 Core0_Neg_middle_eye -39.900000000000006 Core0_Total_middle_eye 86.45 Core1_Pos_middle_eye 54.53 Core1_Neg_middle_eye -38.57 Core1_Total_middle_eye 93.10000000000001 status true

Dec 18, 2025 3:05:39 PM Intel Agilex 5 _ Agilex 3 Transceiver Toolkit: agilex_5_agilex_3_transceiver_toolkit1766070211497
SEVERE: An error occurred while running script "callback_pkg::eye_viewer_callback 0
": Intel Agilex 5 _ Agilex 3 Transceiver Toolkit: agilex_5_agilex_3_transceiver_toolkit1766070211497: key "core0_pos_middle_eye" not known in dictionary
    while executing
"dict get $eye_ehm_values "core0_pos_middle_eye"  "
    (procedure "get_eye_data" line 8)
    invoked from within
"get_eye_data $chan"
    (procedure "eye_viewer_callback_handler" line 75)
    invoked from within
"eye_viewer_callback_handler $chan"
    (procedure "callback_pkg::eye_viewer_callback" line 2)
    invoked from within
"callback_pkg::eye_viewer_callback 0"

Which can be summarised as:

Eye Vewer: 
========== 
Eye Width UI : 0.132 
Eye Width Time : 26.304 
Core0_Pos_middle_eye : 46.550000000000004 
Core0_Neg_middle_eye : -39.900000000000006 
Core0_Total_middle_eye : 86.45 
Core1_Pos_middle_eye : 54.53 
Core1_Neg_middle_eye : -38.57 
Core1_Total_middle_eye : 93.10000000000001

It seems that starting the PRBS check in the TT and checking the BER in TT work - and the BER is 0.

However, the Eye Viewer test seems to fail...

Please do advise! How would I go about using the data I have so far to tune the GTS, and is it possible to fix this eye viewer test?