S_DELAYED_ACK_TIMER_RESOLUTION
#define V_DELAYED_ACK_TIMER_RESOLUTION(x) ((x) << S_DELAYED_ACK_TIMER_RESOLUTION)
#define G_DELAYED_ACK_TIMER_RESOLUTION(x) (((x) >> S_DELAYED_ACK_TIMER_RESOLUTION) & M_DELAYED_ACK_TIMER_RESOLUTION)