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EMACIntStatus() Intterupt source definitions

Jeff_e2e
Intellectual 860 points

I am using the TM4c1294 launchpad. I am looking for a bit more information on the emac interrupt sources.

Can someone point me to where the EMACIntStatus() interrupt sources are defined. I am missing the link between the emac.h header definitions and where those sources are further explained in the datasheet.  The definitions below have a brief explanation in the tivaware documentation. I am hoping for more. Where are these in the tm4c1294 datasheet?

#define EMAC_INT_PHY                      0x80000000
#define EMAC_INT_EARLY_RECEIVE            0x00004000
#define EMAC_INT_BUS_ERROR                0x00002000
#define EMAC_INT_EARLY_TRANSMIT           0x00000400
#define EMAC_INT_RX_WATCHDOG              0x00000200
#define EMAC_INT_RX_STOPPED               0x00000100
#define EMAC_INT_RX_NO_BUFFER             0x00000080
#define EMAC_INT_RECEIVE                  0x00000040
#define EMAC_INT_TX_UNDERFLOW             0x00000020
#define EMAC_INT_RX_OVERFLOW              0x00000010
#define EMAC_INT_TX_JABBER                0x00000008
#define EMAC_INT_TX_NO_BUFFER             0x00000004
#define EMAC_INT_TX_STOPPED               0x00000002
#define EMAC_INT_TRANSMIT                 0x00000001

  • 0
    TI__Mastermind 22580 points
    Hello Jeff,

    The API "EMACIntStatus" uses two different register pairs to collect and report interrupts (based on the value passed to the parameter "bMasked", the value of either *RIS or *IM register is returned in each case).
    * EMACDMARIS/EMACDMAIM
    * EMACEPHYRIS/EMACEPHYMISC

    All the defines mentioned in your post (and in emac.h and emac.c files), except "EMAC_INT_PHY", are values from the register EMACDMARIS/EMACDMAIM.

    The define "EMAC_INT_PHY" is returned (as a logic OR with other interrupts), if the bit "INT" is set in the register EMACEPHYRIS/EMACEPHYMISC.

    For further details refer the API "EMACIntStatus" in the file "./driverlib/emac.c".

    Thanks,
    Sai