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DS90C241 and fiber

Sergey Avdjushin
Intellectual 285 points
Other Parts Discussed in Thread: DS90C241, DS32EL0421, DS32EL0124, TLK1501

Hello!


I'm looking for Serializer to send digital data over fiber.
I plan to use the chip DS90C241 (ACTIVE) 5-35MHz DC-Balanced 24-Bit FPD-Link II Serializer.
Is it possible to get information on the process of coding data?
I need that in sequential data stream was not a sequence of more than 11 ones or zeros.
Does the DS90241 chip corresponds to these requirements?
P.S. In the old prelimenary datasheet from National Semitsondutstor says that this chip is suitable for transmission over fiber.

Serg.

  • 0
    TI__Genius 13475 points

    Sergey

    We do not disclose the exact algorithm used for scrambling and DC balancing the serial stream on the DS90C241, and it does not guarantee that there will be no consecutive sequences of 11 bits or more with no transition.   You may want to look at the DS32EL0421 / DS32EL0124 serializers/deserializers as they offer the option of an internal 8b10b encode/decode which would make any arbitrary data safe for your optical transmission.

  • 0 in reply to Mark Sauerwald88474
    Intellectual 285 points

    Thank you very much for the detailed explanation!


    As for the chip DS32EL0421, it is not appropriate because it does not meet maximum boundrate of optical module - 622 Mbps.
    Now I've found another chip - TLK1501.
    I think that it is suitable for my project.
    Also, there is a development board for the chip - it have an optical fiber module there.

    Best regards, Sergey Avdyushin.