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Avinash_S_Intel's avatar
Avinash_S_Intel
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5 years ago

Startix10 - Transceiver Tool Kit shows half the number of bits

Hi, I have created a Stratix 10 design for testing the serial links using Transceiver Tool Kit. The Transceivers have their 8b/10b encoder and decoder disabled. The Pattern Generator and Checker a...
CheepinC_altera's avatar
CheepinC_altera
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5 years ago

Dear Avinash,

As I understand it, you have some inquiries related to using TTK with S10 L tile XCVR. For your information, generally when we perform the BER testing, we would use the hard PRBS blocks inside the XCVR channel instead of using external pattern generator. Once we turn on the ADME and Optional Reconfiguration Logic, you can use TTK to access the internal PRBS blocks to perform BER link test. Please let me know if you are still observing issue using internal PRBS blocks.

By the way, just wonder how do you calculate the expected tested bit?

Please let me know if there is any concern. Thank you.

Best regards,

Chee Pin

  • Avinash_S_Intel's avatar
    Avinash_S_Intel
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    5 years ago

    Hi Chee Pin,

    Thanks for your response.

    Please note, i have enabled ADME and Optional Reconfiguration Logic and i am using the Hard PRBS generator option.

    As shown in the attached picture, the receiver shows the number of bits it has tested and also reports number of error bits and corresponding BER.

    In my case, i am not seeing the right number of bits received by the receiver.

    I calculate the expected number of bits using the "Data Rate" and the "Duration of the Test".

    No Of Bits = Date Rate (in sec) * Duration Of Test (in sec)

    In my case i ran the test for 5 mins = 300 sec

    The data rate is 8112 Mbps

    No of Bits Expected = 8112E6 * 300 = 2.4336E12

    Please do let me know if there is anything which i am doing wrong.

    Regards,

    Avinash