EMAC_DM644X_EWINTCNT_MASK
#define EMAC_DM644X_INTMAX_INTVL (EMAC_DM644X_EWINTCNT_MASK)
int_ctrl &= (~EMAC_DM644X_EWINTCNT_MASK);
if (prescale > EMAC_DM644X_EWINTCNT_MASK) {
prescale = EMAC_DM644X_EWINTCNT_MASK;