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TLK2711-SP: Board to Board Test

Ryuuichi machida
Guru 13240 points

Part Number: TLK2711-SP

Hello,

I would like you to ask about board to board test for PRBS.

I would like you to confirm which PRBS connection should be available.

Pattern 1

Each PRBS verfication circuit can work for different PRBS Gen.

Pattern 2

PRBS verification and PRBS Gen should be implemented on same chip.

Could you please confirm which understanding is correct  as configuration ?

BR,

 

  • 0
    TI__Mastermind 19235 points

    See text below from the TLK2711-SP datasheet. The TLK should support either configuration

     

    8.3.5 Pseudo-Random Bit Stream (PRBS) Generator The TLK2711-SP has a built-in 2 7 – 1 PRBS function. When the PRBSEN pin is forced high, the PRBS test is enabled. A PRBS is generated and fed into the 10-bit parallel-to-serial converter input register. Data from the normal input source is ignored during the PRBS mode. The PRBS pattern is then fed through the transmit circuitry as if it were normal data and sent out to the transmitter. The output can be sent to a bit error rate tester (BERT), the receiver of another TLK2711-SP, or looped back to the receive input. Because the PRBS is not really random, but a predetermined sequence of 1s and 0s, the data can be captured and checked for errors by a BERT

     

    Cordially,

    Rodrigo Natal

    HSSC Applications Engineer

  • 0 in reply to Rodrigo Natal
    Guru 13240 points

    Hello Rodrigo-san,

    Thank you for your reply.

    Since I only checked following document, I did not notice this sentence.

    http://www.ti.com/jp/lit/ug/sglu001a/sglu001a.pdf

    (There is no example about datasheet description in this doc)

    Thank you !

    BR,