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DS110DF410: Signal from input has same frequency with output?

Xenon Li
Intellectual 1505 points
Part Number: DS110DF410
Other Parts Discussed in Thread: DS250DF410,

Dear Team,

Hope you are doing well!

I have a few questions about DS110DF410 and DS250DF410:

1. Will the SerDes input signal has same frequency with SerDes output signal like the block diagram showed? The schematic diagram is shown as below:

2. What is the digital core's function shown in block diagram?

3. Can the chip achieve transferring the SerDes input signal to output signal though CDR and PLL (removing dithering)? (Is DS110DF410 the same with DS250DF410?)

Could you please help me to solve these questions?

Thanks a lot!

Best regards,

Xenon Li

  • 0
    TI__Genius 16240 points

    Hi Xenon,

    Xenon Li said:
    1. Will the SerDes input signal has same frequency with SerDes output signal like the block diagram showed?

    Yes, specifically the CDR detects the frequency of the input signal to create a recovered clock and uses this to reconstruct the retimed signal which is given at the output.

    Xenon Li said:
    2. What is the digital core's function shown in block diagram?

    The digital core contains the device's register set which can be read from and written to via SMBus interface. This can be used to observe statuses and modify configurations.

    Xenon Li said:
    3. Can the chip achieve transferring the SerDes input signal to output signal though CDR and PLL (removing dithering)? (Is DS110DF410 the same with DS250DF410?)

    By dithering do you mean jitter? Yes, DS110DF410 is a retimer which fully recovers data and clock from the input signal in order to reconstruct a clean copy of the signal, significantly reducing jitter. Yes, both DS110DF410 and DS250DF410 are retimers, however DS110 is designed for 10G applications and DS250 is designed for 25G applications.

    Best,

    Lucas