09-07-2015 04:18 AM - edited 09-11-2015 09:15 PM
We have VC707 baord and 4-port SFP/SFP+ module. We want to test eight GTX transceivers (MGT_BANK_117 & MGT_BANK_119).To test GTX transceivers, we are using IBERT core.We are giving external reference clock 125 MHz, Sys clk is 200 MHz( Pins:E19,E18).I attached Zip file below which contained results and modules what we are using and setup too.
For Near End , it(FMC1) is working fine, Coming to far end, both are not working.What could be the reason?
REF CLK 125MHz, Line Rate 3.125Gbps.
09-07-2015 10:40 PM
09-08-2015 03:50 AM
09-08-2015 08:29 AM
> I just want to do loopback test.I connected ofc cable between two sfps.
Q1 - How many FMC cards are you using?
Q1.1 - If the answer is not two then which interface is the FMC card connect to on the VC707?
Q2 - How many SFP modules are you using?
Q2.1 - If the answer is not eight (two FMC cards) or four (one FMC card) then which SFP cages are the SFP modules plugged into?
Q3 - How have you connected the optical cables between the SFP modules? This should be express in the following form:
Link 0 - FMC#.SFP# to FMC#.SFP#
Link 1 - FMC#.SFP# to FMC#.SFP#
Link 2 - FMC#.SFP# to FMC#.SFP#
Link 3 - FMC#.SFP# to FMC#.SFP#
Q4 - Please provide a picture of your setup.
09-08-2015 10:51 PM
How many FMC cards are you using?
A: I am using Two FMC cards
How many SFP modules are you using?
How have you connected the optical cables between the SFP modules? This should be express in the following form:
We have two OFC cables.While testing, we connected as per requirement.
Please provide a picture of your setup.
A:attached zip file which have setup images.
09-09-2015 02:20 AM
09-09-2015 08:53 AM
>>How have you connected the optical cables between the SFP modules? This should be express in the following form:
>A: We have two OFC cables.While testing, we connected as per requirement.
It is frustrating when you do not provide full and complete information as requested. This has been a common occurence in this thread and your others. Based on the pictures, in this case the answer should have been:
Link 0 - FMC1.SFP0 to FMC1.SFP1
Link 1 - FMC2.SFP0 to FMC2.SFP3 <- This does not match the IBERT configuration, FMC2.SFP3 should be FMC2.SFP1
Link 2 - Not connected
Link 3 - Not connected
Your system images shows that you have a TX FAULT indicator on every SFP and this was part of your other thread. You never responded to any of my questions in post #29 in that thread nor my re-request in post #34. In post #29 I had said the following:
> Please provide a photo of your test setup that shows the VC707, the FMC card, the SFP and optical cabling.
>> Why TX_Fault is High?(SFP)
>The most likely condition is that the SFP module is not present. The second most likely condition is that the SFP >module has detected a fault in the TX laser circuits.This may be due to TX_DISABLE being asserted,
In the pictures you provided now, it is clear that you have not installed jumpers on the JP12 TX0:3_DIS pins. The INF-8074 document that you have posted says in Table 1 "TX Disable, Transmitter Disable, Note 2 Module disables on high or open". The schematics that you have posted shows that the "TX Disable" pin for each SFP module is open unless the jumper is installed to connect the pin to ground. This results in the SFP transmitter being disabled.
Installing these jumpers should move you on to the next step. When you encounter the next issue please read and respond fully to every question that is asked.
09-11-2015 05:56 AM - edited 09-11-2015 06:22 AM
Now I am using FMC1 only.Results are in attched zip file.What is None mode? Is it loopback mode?
I selected different modes as in images. I got unexpected results.Can u explain? for IBERT, it is giving some result.Coming aurora, it is not working.what could be the reason? in simulation it is working.coming to hardware, not working.
I added jumpers as you said.
i added SFP module.
09-11-2015 11:07 AM
09-13-2015 09:21 PM - edited 09-13-2015 09:22 PM
I tried one test-loopback between onboard SFP (X1Y2)to SFP on FMC1 daughter card (X1Y24).You can find test setup and chipscope results on zip file. Lane up signal for X1Y2 is toggling and pll_lock signal for X1Y24 is toggloing. Ref clock is 125 MHz, INIT_CLK is SYS_CLK,Board :vc707,aurora 64b66b,streaming.What could be the reason?How can we resolve it?
11-23-2019 02:54 PM
I am try to run a similar test with an FMC with 4 SFP+ , card name FM-S14.
In this test I am implementing a loopback test on the first SFP on which i plugged a loopback bridge (MOLEX).
The design works fine only in Behavioral simulation but not in Post-Synthesis neither on the real FPGA.
I am providing to the FM-S14 the signals necessary to activate the laser as follow:
rate_sel1 <= '1'; -- Channel 0 have SFP module run at full bandwidth
tx_disable1 <= '0'; -- Channel 0 enable SFP modules
BUT anyway the channel, the lane and the aurora core itself (signal s_axis_tx_ready) are always down to zero.
They are only up with during behavioral .
When I flash the bitstream on the FM-S14 card, only the led od channel 1 is blinking red the others are turned of.
Weird also because I am trying to drive channel 0 and not channel 1.
I have tested all the 4 channels but the situation is the same.
I have tried various FS card but i got always the same situation.
Anyone of you has any suggestions please?
Thanks a lot