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TM4C1294NCPDT: FULL DUPLEX ETHERNET COMMUNICATION

Part Number: TM4C1294NCPDT

I am using lwiopts file for tcp ip communication . following are the line of code for full duplex communciation.

#if !defined(EMAC_PHY_IS_EXT_MII) && !defined(EMAC_PHY_IS_EXT_RMII)
#define EMAC_PHY_CONFIG (EMAC_PHY_TYPE_INTERNAL | EMAC_PHY_INT_MDIX_EN | \
EMAC_PHY_AN_10B_T_FULL_DUPLEX)

Issues observed:

 Ethernet is not working with full duplex managed switch. However it works with half duplex code.

Please help.