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CCS/TM4C129XNCZAD: Problem configuring clock for ethernet driver

Part Number: TM4C129XNCZAD

Tool/software: Code Composer Studio

Hi, I have a problem using ethernet driver, in particular related to the clock configuration.

With these settings, ethernet worked fine:

SysCtlMOSCConfigSet(SYSCTL_MOSC_HIGHFREQ);

g_ui32SysClock = MAP_SysCtlClockFreqSet((SYSCTL_XTAL_25MHZ | SYSCTL_OSC_MAIN | SYSCTL_USE_PLL | SYSCTL_CFG_VCO_480), 120000000);

SysCtlVCOGet(SYSCTL_XTAL_25MHZ, &ui32PLLRate);

But I had many problems with all other peripherals, so I had to set the clock in this way:

g_ui32SysClock = MAP_SysCtlClockFreqSet((SYSCTL_XTAL_25MHZ | SYSCTL_OSC_MAIN | SYSCTL_USE_OSC), 25000000); // 25MHz

But now ethernet doesn't work anymore..... can anyone help me with this settings please? I have to set the sysclock @25MHz, but the ethernet driver must work anyway.

Thank you

Cristina