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Altera_Forum's avatar
Altera_Forum
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14 years ago

Arria gx serdes

Hello,

I would want to know if I can use a SERDES to decode stream from an ADC which is a AD7626. I would want to use it in Self Clocked Mode which permit to minimize LVDS lines (the ADC only sends DATA lines, no clock is needed) since there is a 010 sequence permit to the receiver to recover the clock (as mentioned in AD7626 datasheet page 23).

As you can see there is 16 bits of data + 010 sequence @ 10MSPS which means a 250MHz clock, does the ARRIA GX SERDES could help me to decode the 16 bits data ?

I hope that you could help me,

thanks a lot.

2 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    14 years ago

    hi,houly,

    SERDES can be implemented as a 250MHz bidir port.

    I have already use a 75MHz 1:2 SERDES in arriaII EP2AGX125EF35,which means logic in SEREDS is driven by a 150MHz clk. And I will try the higher frequency later.

    regards
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    14 years ago

    Hi Smileface,

    Thanks a lot for your reply, well my main problem is to know how the header of the data frame is understand by the SERDES receiver, and therefore how the clock recovery system could recover the clock with the only data line provided by the ADC.