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TI SERDES device providing 3Gbps data without an encoding scheme?

Shashank Reddi
Intellectual 1695 points
Other Parts Discussed in Thread: TLK3132, TLK10002, TLK6002, TLK3131, TLK3134, DS32ELX0421, DS32ELX0124

Hi Team,

Is there a TI SERDES device that can provide 3Gbps data without using an encoding scheme?

Customer is looking at bringing parallel data out of an FPGA and taking it into a differential encoder at 3Gbps. They're looking at something like the TI TLK10002 or TLK3132, these could work except that they employ 8b/10b encoding. They need a straight pass through SERDES, any ideas?

Thanks,

Shashank

  • 0
    TI__Mastermind 20820 points

    Hi Shashank,

    SerDes devices that fit your description above would be the TlK6002 (might be overkill), TLK3132, TLK3131, and the TLK3134 devices. The TLK10002 does not support a parallel interface, it is multiple low speed lanes of data aggregated to a single serial link.

    Can you please tell me what the customers application is?

    How are they going to ensure that their signal is DC balanced and that there are enough transitions in the data to recover a clock? Are they planning on implementing their own encoding scheme?

    Regards,

    Mike

  • 0
    TI__Genius 13475 points

    Another option would be the DS32ELX0421 (Serializer) and DS32ELX0124 (Deserializer) pair.  These devices were designed specifically to be paired with an FPGA.

    Encoding is left as an exercise to the host FPGA, although there is an option to run an 8b/10b encode within the chip.