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Strange behavior of TCP NET on LPC2367

Vladimir Timohin
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Hello all!
I have some problem with TCP NET Suit.
I using LPC2367+Micrel KSZ8721 + TCP/IP Network Suit from Keil.
When i set CCLK <= 32Mhz everything is fine.
But when i try to set CCLK >32 Mhz there is even no ping my device.
But timer_tick () and main_TcpNet() is executing(i see this via my ULINK2 Debugger).

Maybe i have to reduce RMII frequency or something else.
Please help.

  • 0 Offline

    Thanks for all. I solved this problem.
    There is no problem with TCP/IP Network Suit.
    It's necessary to reduce frequency on MDC output by setting in MAC_MCFG register host clock dividers.

    With best regards, Vladimir.