296             /* This will end within a short time (6 usecs). Just poll */  in nrf_wait_disabled()
299                  * no more than 6 usecs */  in nrf_wait_disabled()
318      * XXX: The TXEN time is 140 usecs but there may be additional delays  in ble_phy_set_start_time()
325      * tick offset, which is 152.5 usecs. The TXEN time is 140 usecs. This  in ble_phy_set_start_time()
396  * @param wfr_usecs Amount of usecs to wait.
408          * is captured in CC[2]. I just made up the 16 usecs I add here.  in ble_phy_wfr_enable()
661     uint32_t usecs;  in ble_phy_rx_start_isr()  local
693     usecs = NRF_TIMER0->CC[1] - ble_phy_mode_pdu_start_off(BLE_PHY_MODE_1M);  in ble_phy_rx_start_isr()
694     ticks = os_cputime_usecs_to_ticks(usecs);  in ble_phy_rx_start_isr()
695     ble_hdr->rem_usecs = usecs - os_cputime_ticks_to_usecs(ticks);  in ble_phy_rx_start_isr()
1032  *                  kHz crystal. It is the # of usecs from the cputime tick
1049      * XXX: The TXEN time is 140 usecs but there may be additional delays  in ble_phy_tx_set_start_time()
1088      * XXX: The RXEN time is 138 usecs but there may be additional delays  in ble_phy_rx_set_start_time()