T1_LS
#define T1_LS (1U<<30) /* last segment */
#define T1_LS (1U<<29) /* last segment of frame */
#define T1_LS (1U<<30) /* last descriptor of Tx frame */
#define T1_LS (1U<<30) /* last segment */
#define T1_LS (1U<<29) /* last segment of frame */