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Recent content by tutu_xie

  1. T

    Ethernet MAC MDC frequency

    For different chip the MDIO may run@ different frequency, recommendation is <=2.5MHZ
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    How to generate 125MHz to synchronize RXD for MAC CORE?

    MAC IP CORE design My understanding is: All 100/1000M Mac needs a external 125M clk resource to feed internal PLL, you know when in 1GE mode, MAC also needs to send this clk to PHY
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    Whats the use of pre_randomize() and post_randomize() ?

    Re: randomize pre_randomize() and post_randomize() methods will be called automatically, And aslo you can overload them. eg: pre_randomize() – set up random weights, do some initialization post_randomize() – calculate CRC for random generated data
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    Synthesis lib, diff between hv/sv/lv?

    Hi, Vendor has 3 types lib, They are high voltage, standard voltage, and low voltage. And each contain fast/standard/slow. What's the difference about vlotage, which should I use? Thanks
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    VCS post simulation option, "+compsdf" and "+

    vcs +compsdf Does this two guys conflict? Seems when I simutaneously use this tow option in compile, Post simulation waveform will not include the delay infomation.

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