diff --git a/drivers/nrf_802154/driver/CMakeLists.txt b/drivers/nrf_802154/driver/CMakeLists.txt
index 461c22a..7f43632 100644
--- a/drivers/nrf_802154/driver/CMakeLists.txt
+++ b/drivers/nrf_802154/driver/CMakeLists.txt
@@ -101,6 +101,8 @@ if (SL_OPENSOURCE)
       NRF_802154_DELAYED_TRX_ENABLED=0
       # Disable IFS
       NRF_802154_IFS_ENABLED=0
+      # Disable CSMA-CA
+      NRF_802154_CSMA_CA_ENABLED=0
   )
 endif()
 
diff --git a/drivers/nrf_802154/driver/include/nrf_802154.h b/drivers/nrf_802154/driver/include/nrf_802154.h
index 8c972b3..6fd4b3e 100644
--- a/drivers/nrf_802154/driver/include/nrf_802154.h
+++ b/drivers/nrf_802154/driver/include/nrf_802154.h
@@ -404,6 +404,17 @@ uint8_t nrf_802154_ccaedthres_from_dbm_calculate(int8_t dbm);
  */
 uint64_t nrf_802154_first_symbol_timestamp_get(uint64_t end_timestamp, uint8_t psdu_length);
 
+/**
+ * @brief  Calculates the timestamp of the MAC Header in a received frame.
+ *
+ * @param[in]  end_timestamp  Timestamp of the end of the last symbol in the frame,
+ *                            in microseconds.
+ * @param[in]  psdu_length    Number of bytes in the frame PSDU.
+ *
+ * @return  Timestamp of the MHR of a given frame, in microseconds.
+ */
+uint64_t nrf_802154_mhr_timestamp_get(uint64_t end_timestamp, uint8_t psdu_length);
+
 /**
  * @}
  * @defgroup nrf_802154_transitions Functions to request FSM transitions and check current state
@@ -971,7 +982,9 @@ extern void nrf_802154_transmit_failed(uint8_t
  * @brief Notifies that the energy detection procedure finished.
  *
  * @note This function passes the EnergyLevel defined in the 802.15.4-2006 specification:
- *       0x00 - 0xff, proportionally to the detected energy level (dBm above receiver sensitivity).
+ *       0x00 - 0xff, where 0x00 represents -75dBm (10dBm above the worst allowed sensitivity level,
+ *       which is -85dBm) and 0xff is the highest possible energy detection level, for which
+ *       the measurements are guaranteed map linearly to the real energy level in dBm.
  *       To calculate the result in dBm, use @ref nrf_802154_dbm_from_energy_level_calculate.
  *
  * @param[in]  result  Maximum energy detected during the energy detection procedure.
diff --git a/drivers/nrf_802154/driver/include/nrf_802154_const.h b/drivers/nrf_802154/driver/include/nrf_802154_const.h
index 6203121..9155ba2 100644
--- a/drivers/nrf_802154/driver/include/nrf_802154_const.h
+++ b/drivers/nrf_802154/driver/include/nrf_802154_const.h
@@ -180,6 +180,8 @@
 #define PHY_SYMBOLS_PER_OCTET           2                                            ///< Number of symbols in a single byte (octet).
 #define PHY_SHR_SYMBOLS                 10                                           ///< Number of symbols in the Synchronization Header (SHR).
 
+#define PHY_MIN_RECEIVER_SENSITIVITY    -85                                          ///< Lowest receiver sensitivity level in dBm according to 802.15.4-2020 specification, chapter 12.3.4
+
 #define ED_RESULT_MAX                   0xff                                         ///< Maximal ED result.
 
 #define BROADCAST_ADDRESS               ((uint8_t[SHORT_ADDRESS_SIZE]) {0xff, 0xff}) ///< Broadcast short address.
diff --git a/drivers/nrf_802154/driver/include/nrf_802154_types.h b/drivers/nrf_802154/driver/include/nrf_802154_types.h
index cd7332e..076f8f4 100644
--- a/drivers/nrf_802154/driver/include/nrf_802154_types.h
+++ b/drivers/nrf_802154/driver/include/nrf_802154_types.h
@@ -481,13 +481,22 @@ typedef struct
     } data;                  // !< Result values that are valid only for successful operations.
 } nrf_802154_transmit_done_metadata_t;
 
+/**
+ * @brief Represents components of tx_power to be applied for stages on transmit path.
+ */
+typedef struct
+{
+    nrf_radio_txpower_t radio_tx_power; // !< TX power to be applied to the RADIO peripheral.
+    int8_t              fem_gain;       // !< Gain of the Front-End Module in dB.
+} nrf_802154_tx_power_split_t;
+
 /**
  * @brief Structure that holds transmission parameters.
  */
 typedef struct
 {
     nrf_802154_transmitted_frame_props_t frame_props; // !< Properties of the frame to be transmitted.
-    int8_t                               tx_power;    // !< Power to be used when transmitting the frame.
+    nrf_802154_tx_power_split_t          tx_power;    // !< Power to be used when transmitting the frame, split into components to be applied on each stage on transmit path.
     bool                                 cca;         // !< If the driver is to perform CCA procedure before transmission.
     bool                                 immediate;   // !< If true, the driver schedules transmission immediately or never. If false, the transmission may be postponed
                                                       // until its preconditions are met.
diff --git a/drivers/nrf_802154/driver/src/fal/nrf_802154_fal.c b/drivers/nrf_802154/driver/src/fal/nrf_802154_fal.c
deleted file mode 100644
index c057ab4..0000000
--- a/drivers/nrf_802154/driver/src/fal/nrf_802154_fal.c
+++ /dev/null
@@ -1,50 +0,0 @@
-/*
- * Copyright (c) 2017 - 2022, Nordic Semiconductor ASA
- * All rights reserved.
- *
- * SPDX-License-Identifier: BSD-3-Clause
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
- *    contributors may be used to endorse or promote products derived from this
- *    software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
-/**
- * @file
- *   This file contains implementation of the nRF 802.15.4 FEM abstraction layer.
- *
- */
-
-#include <stdint.h>
-
-#include "nrf_802154_fal.h"
-
-int8_t nrf_802154_fal_tx_power_get(const uint8_t channel, const int8_t power)
-{
-    (void)channel;
-
-    return power;
-}
diff --git a/drivers/nrf_802154/driver/src/mac_features/nrf_802154_csma_ca.c b/drivers/nrf_802154/driver/src/mac_features/nrf_802154_csma_ca.c
index a5d6a79..452a817 100644
--- a/drivers/nrf_802154/driver/src/mac_features/nrf_802154_csma_ca.c
+++ b/drivers/nrf_802154/driver/src/mac_features/nrf_802154_csma_ca.c
@@ -77,7 +77,7 @@ static uint8_t m_be;                                      ///< Backoff exponent,
 
 static uint8_t                            * mp_data;      ///< Pointer to a buffer containing PHR and PSDU of the frame being transmitted.
 static nrf_802154_transmitted_frame_props_t m_data_props; ///< Structure containing detailed properties of data in buffer.
-static int8_t                               m_tx_power;   ///< Power in dBm to be used when transmitting the frame.
+static nrf_802154_tx_power_split_t          m_tx_power;   ///< Power to be used when transmitting the frame split into components.
 static csma_ca_state_t                      m_state;      ///< The current state of the CSMA-CA procedure.
 
 /**
@@ -363,9 +363,9 @@ bool nrf_802154_csma_ca_start(uint8_t                                      * p_d
     m_data_props = p_metadata->frame_props;
     m_nb         = 0;
     m_be         = nrf_802154_pib_csmaca_min_be_get();
-    m_tx_power   =
-        nrf_802154_tx_power_convert_metadata_to_raw_value(nrf_802154_pib_channel_get(),
-                                                          p_metadata->tx_power);
+    (void)nrf_802154_tx_power_convert_metadata_to_tx_power_split(nrf_802154_pib_channel_get(),
+                                                                 p_metadata->tx_power,
+                                                                 &m_tx_power);
 
     random_backoff_start();
 
diff --git a/drivers/nrf_802154/driver/src/mac_features/nrf_802154_delayed_trx.c b/drivers/nrf_802154/driver/src/mac_features/nrf_802154_delayed_trx.c
index 3f86a68..53fef25 100644
--- a/drivers/nrf_802154/driver/src/mac_features/nrf_802154_delayed_trx.c
+++ b/drivers/nrf_802154/driver/src/mac_features/nrf_802154_delayed_trx.c
@@ -772,9 +772,9 @@ bool nrf_802154_delayed_trx_transmit(uint8_t                                 * p
 
         p_dly_tx_data->tx.p_data             = p_data;
         p_dly_tx_data->tx.params.frame_props = p_metadata->frame_props;
-        p_dly_tx_data->tx.params.tx_power    = nrf_802154_tx_power_convert_metadata_to_raw_value(
-            p_metadata->channel,
-            p_metadata->tx_power);
+        (void)nrf_802154_tx_power_convert_metadata_to_tx_power_split(p_metadata->channel,
+                                                                     p_metadata->tx_power,
+                                                                     &p_dly_tx_data->tx.params.tx_power);
         p_dly_tx_data->tx.params.cca       = p_metadata->cca;
         p_dly_tx_data->tx.params.immediate = true;
         p_dly_tx_data->tx.channel          = p_metadata->channel;
@@ -939,6 +939,8 @@ bool nrf_802154_delayed_trx_nearest_drx_time_to_midpoint_get(uint32_t * p_drx_ti
 
         result = nrf_802154_rsch_delayed_timeslot_time_to_start_get(m_dly_rx_data[i].id,
                                                                     &drx_time_to_start);
+        drx_time_to_start += RX_SETUP_TIME + RX_RAMP_UP_TIME;
+
         if (result)
         {
             min_time_to_start = drx_time_to_start < min_time_to_start ?
diff --git a/drivers/nrf_802154/driver/src/mac_features/nrf_802154_ie_writer.c b/drivers/nrf_802154/driver/src/mac_features/nrf_802154_ie_writer.c
index 7da2204..e0dfa4f 100644
--- a/drivers/nrf_802154/driver/src/mac_features/nrf_802154_ie_writer.c
+++ b/drivers/nrf_802154/driver/src/mac_features/nrf_802154_ie_writer.c
@@ -243,7 +243,7 @@ static void link_metrics_ie_write_commit(bool * p_written)
 
         if (mp_lm_margin_addr != NULL)
         {
-            *mp_lm_margin_addr = margin_scale((int16_t)rssi - ED_MIN_DBM);
+            *mp_lm_margin_addr = margin_scale((int16_t)rssi - ED_RSSIOFFS);
             *p_written         = true;
         }
     }
diff --git a/drivers/nrf_802154/driver/src/nrf_802154.c b/drivers/nrf_802154/driver/src/nrf_802154.c
index 2ced051..33a49d3 100644
--- a/drivers/nrf_802154/driver/src/nrf_802154.c
+++ b/drivers/nrf_802154/driver/src/nrf_802154.c
@@ -59,6 +59,7 @@
 #include "nrf_802154_request.h"
 #include "nrf_802154_rx_buffer.h"
 #include "nrf_802154_tx_power.h"
+#include "nrf_802154_rssi.h"
 #include "nrf_802154_stats.h"
 #include "hal/nrf_radio.h"
 #include "platform/nrf_802154_clock.h"
@@ -156,7 +157,11 @@ void nrf_802154_tx_power_set(int8_t power)
 
 int8_t nrf_802154_tx_power_get(void)
 {
-    return nrf_802154_tx_power_constrained_pib_power_get();
+    nrf_802154_tx_power_split_t split_power = {0};
+
+    (void)nrf_802154_tx_power_split_pib_power_get(&split_power);
+
+    return split_power.fem_gain + split_power.radio_tx_power;
 }
 
 bool nrf_802154_coex_rx_request_mode_set(nrf_802154_coex_rx_request_mode_t mode)
@@ -201,12 +206,12 @@ void nrf_802154_short_address_set(const uint8_t * p_short_address)
 
 int8_t nrf_802154_dbm_from_energy_level_calculate(uint8_t energy_level)
 {
-    return ED_MIN_DBM + (energy_level / ED_RESULT_FACTOR);
+    return nrf_802154_addons_dbm_from_energy_level_calculate(energy_level);
 }
 
 uint8_t nrf_802154_ccaedthres_from_dbm_calculate(int8_t dbm)
 {
-    return dbm - ED_MIN_DBM;
+    return dbm - ED_RSSIOFFS;
 }
 
 uint64_t nrf_802154_first_symbol_timestamp_get(uint64_t end_timestamp, uint8_t psdu_length)
@@ -218,6 +223,11 @@ uint64_t nrf_802154_first_symbol_timestamp_get(uint64_t end_timestamp, uint8_t p
     return end_timestamp - (frame_symbols * PHY_US_PER_SYMBOL);
 }
 
+uint64_t nrf_802154_mhr_timestamp_get(uint64_t end_timestamp, uint8_t psdu_length)
+{
+    return end_timestamp - (psdu_length * PHY_SYMBOLS_PER_OCTET * PHY_US_PER_SYMBOL);
+}
+
 void nrf_802154_init(void)
 {
     static const nrf_802154_sl_crit_sect_interface_t crit_sect_int =
@@ -490,13 +500,15 @@ bool nrf_802154_transmit_raw(uint8_t                              * p_data,
     nrf_802154_transmit_params_t params =
     {
         .frame_props = p_metadata->frame_props,
-        .tx_power    = nrf_802154_tx_power_convert_metadata_to_raw_value(
-            nrf_802154_pib_channel_get(),
-            p_metadata->tx_power),
-        .cca       = p_metadata->cca,
-        .immediate = false
+        .tx_power    = {0},
+        .cca         = p_metadata->cca,
+        .immediate   = false
     };
 
+    (void)nrf_802154_tx_power_convert_metadata_to_tx_power_split(nrf_802154_pib_channel_get(),
+                                                                 p_metadata->tx_power,
+                                                                 &params.tx_power);
+
     result = are_frame_properties_valid(&params.frame_props);
     if (result)
     {
@@ -536,13 +548,15 @@ bool nrf_802154_transmit(const uint8_t                        * p_data,
     nrf_802154_transmit_params_t params =
     {
         .frame_props = p_metadata->frame_props,
-        .tx_power    = nrf_802154_tx_power_convert_metadata_to_raw_value(
-            nrf_802154_pib_channel_get(),
-            p_metadata->tx_power),
-        .cca       = p_metadata->cca,
-        .immediate = false
+        .tx_power    = {0},
+        .cca         = p_metadata->cca,
+        .immediate   = false
     };
 
+    (void)nrf_802154_tx_power_convert_metadata_to_tx_power_split(nrf_802154_pib_channel_get(),
+                                                                 p_metadata->tx_power,
+                                                                 &params.tx_power);
+
     result = are_frame_properties_valid(&params.frame_props);
     if (result)
     {
diff --git a/drivers/nrf_802154/driver/src/nrf_802154_core.c b/drivers/nrf_802154/driver/src/nrf_802154_core.c
index 535b762..7b94257 100644
--- a/drivers/nrf_802154/driver/src/nrf_802154_core.c
+++ b/drivers/nrf_802154/driver/src/nrf_802154_core.c
@@ -115,13 +115,13 @@ static rx_buffer_t * const mp_current_rx_buffer = &nrf_802154_rx_buffers[0];
 
 #endif
 
-static uint8_t * mp_ack;                                       ///< Pointer to Ack frame buffer.
-static uint8_t * mp_tx_data;                                   ///< Pointer to the data to transmit.
-static uint32_t  m_ed_time_left;                               ///< Remaining time of the current energy detection procedure [us].
-static uint8_t   m_ed_result;                                  ///< Result of the current energy detection procedure.
-static uint8_t   m_last_lqi;                                   ///< LQI of the last received non-ACK frame, corrected for the temperature.
-static int8_t    m_last_rssi;                                  ///< RSSI of the last received non-ACK frame, corrected for the temperature.
-static int8_t    m_tx_power;                                   ///< Power in dBm to be used to transmit the current frame.
+static uint8_t                   * mp_ack;                     ///< Pointer to Ack frame buffer.
+static uint8_t                   * mp_tx_data;                 ///< Pointer to the data to transmit.
+static uint32_t                    m_ed_time_left;             ///< Remaining time of the current energy detection procedure [us].
+static uint8_t                     m_ed_result;                ///< Result of the current energy detection procedure.
+static uint8_t                     m_last_lqi;                 ///< LQI of the last received non-ACK frame, corrected for the temperature.
+static nrf_802154_tx_power_split_t m_tx_power;                 ///< Power to be used to transmit the current frame split into components.
+static int8_t                      m_last_rssi;                ///< RSSI of the last received non-ACK frame, corrected for the temperature.
 
 static nrf_802154_frame_parser_data_t m_current_rx_frame_data; ///< RX frame parser data.
 
@@ -499,26 +499,6 @@ static bool ack_is_requested(const uint8_t * p_frame)
  * @section Energy detection management
  **************************************************************************************************/
 
-/** Get ED result value.
- *
- *  @param[in]  ed_sample   Energy Detection sample gathered from TRX module
- *  @returns ED result based on data collected during Energy Detection procedure.
- */
-static uint8_t ed_result_get(uint8_t ed_sample)
-{
-    uint32_t result;
-
-    result  = nrf_802154_rssi_ed_corrected_get(ed_sample);
-    result *= ED_RESULT_FACTOR;
-
-    if (result > ED_RESULT_MAX)
-    {
-        result = ED_RESULT_MAX;
-    }
-
-    return (uint8_t)result;
-}
-
 /** Setup next iteration of energy detection procedure.
  *
  *  Energy detection procedure is performed in iterations to make sure it is performed for requested
@@ -1045,9 +1025,13 @@ static void rx_init(void)
 
     nrf_802154_trx_receive_buffer_set(rx_buffer_get());
 
+    nrf_802154_tx_power_split_t split_power = {0};
+
+    (void)nrf_802154_tx_power_split_pib_power_get(&split_power);
+
     nrf_802154_trx_receive_frame(BCC_INIT / 8U,
                                  m_trx_receive_frame_notifications_mask,
-                                 nrf_802154_tx_power_constrained_pib_power_get());
+                                 &split_power);
 
 #if NRF_802154_TOTAL_TIMES_MEASUREMENT_ENABLED
     m_listening_start_hp_timestamp = nrf_802154_hp_timer_current_time_get();
@@ -1109,7 +1093,7 @@ static bool tx_init(const uint8_t * p_data, bool cca)
     m_flags.tx_with_cca = cca;
     nrf_802154_trx_transmit_frame(nrf_802154_tx_work_buffer_get(p_data),
                                   cca,
-                                  m_tx_power,
+                                  &m_tx_power,
                                   m_trx_transmit_frame_notifications_mask);
 
     return true;
@@ -1173,8 +1157,11 @@ static void continuous_carrier_init(void)
     {
         return;
     }
+    nrf_802154_tx_power_split_t split_power = {0};
 
-    nrf_802154_trx_continuous_carrier(nrf_802154_tx_power_constrained_pib_power_get());
+    (void)nrf_802154_tx_power_split_pib_power_get(&split_power);
+
+    nrf_802154_trx_continuous_carrier(&split_power);
 }
 
 /** Initialize Modulated Carrier operation. */
@@ -1190,7 +1177,11 @@ static void modulated_carrier_init(const uint8_t * p_data)
         return;
     }
 
-    nrf_802154_trx_modulated_carrier(p_data, nrf_802154_tx_power_constrained_pib_power_get());
+    nrf_802154_tx_power_split_t split_power = {0};
+
+    (void)nrf_802154_tx_power_split_pib_power_get(&split_power);
+
+    nrf_802154_trx_modulated_carrier(p_data, &split_power);
 }
 
 #endif // NRF_802154_CARRIER_FUNCTIONS_ENABLED
@@ -1917,9 +1908,14 @@ void nrf_802154_trx_receive_frame_crcerror(void)
     // We don't change receive buffer, receive will go to the same that was already used
 #if !NRF_802154_DISABLE_BCC_MATCHING
     request_preconditions_for_state(m_state);
+
+    nrf_802154_tx_power_split_t split_power = {0};
+
+    (void)nrf_802154_tx_power_split_pib_power_get(&split_power);
+
     nrf_802154_trx_receive_frame(BCC_INIT / 8U,
                                  m_trx_receive_frame_notifications_mask,
-                                 nrf_802154_tx_power_constrained_pib_power_get());
+                                 &split_power);
 
 #if NRF_802154_TOTAL_TIMES_MEASUREMENT_ENABLED
     m_listening_start_hp_timestamp = nrf_802154_hp_timer_current_time_get();
@@ -2550,7 +2546,7 @@ void nrf_802154_trx_energy_detection_finished(uint8_t ed_sample)
         state_set(RADIO_STATE_RX);
         rx_init();
 
-        energy_detected_notify(ed_result_get(m_ed_result));
+        energy_detected_notify(nrf_802154_rssi_ed_sample_convert(m_ed_result));
 
     }
 
diff --git a/drivers/nrf_802154/driver/src/nrf_802154_nrfx_addons.h b/drivers/nrf_802154/driver/src/nrf_802154_nrfx_addons.h
index 2229b04..89d53e8 100644
--- a/drivers/nrf_802154/driver/src/nrf_802154_nrfx_addons.h
+++ b/drivers/nrf_802154/driver/src/nrf_802154_nrfx_addons.h
@@ -32,14 +32,43 @@
  *
  */
 
-#include "nrf.h"
+#ifndef NRF_802154_NRFX_ADDONS_H__
+#define NRF_802154_NRFX_ADDONS_H__
 
-#if defined (NRF52840_XXAA) || defined(NRF52811_XXAA) || defined(NRF5340_XXAA_NETWORK)
-#define ED_MIN_DBM       (-92) ///< dBm value corresponding to value 0 in the EDSAMPLE register.
-#define ED_RESULT_FACTOR 4     ///< Factor needed to calculate the ED result based on the data from the RADIO peripheral.
-#elif defined (NRF52833_XXAA) || defined(NRF52820_XXAA)
-#define ED_MIN_DBM       (-93) ///< dBm value corresponding to value 0 in the EDSAMPLE register.
-#define ED_RESULT_FACTOR 5     ///< Factor needed to calculate the ED result based on the data from the RADIO peripheral.
+#include "nrf.h"
+#include "nrf_802154_const.h"
+
+/* The usage of ED_RSSISCALE is described inprecisely in the nRF product specifications. The meaning of
+   this constant is the following: If we calculate ed_scaled =  EDSAMPLE *  ED_RSSISCALE, then
+   it is guaranteed that in the range 0-255 ed_scaled maps linearly to the ED power in dBm. This means,
+   that the maximum value in EDSAMPLE which can be reported in compliance with the 802.15.4 specification is
+   255/ED_RSSISCALE. */
+
+#if defined (NRF52840_XXAA) || defined(NRF52811_XXAA)
+#define ED_RSSIOFFS  (-92) ///< dBm value corresponding to value 0 in the EDSAMPLE register.
+#define ED_RSSISCALE 4     ///< Factor needed to calculate the ED result based on the data from the RADIO peripheral.
+#elif defined (NRF52833_XXAA) || defined(NRF52820_XXAA) || defined(NRF5340_XXAA)
+#define ED_RSSIOFFS  (-93) ///< dBm value corresponding to value 0 in the EDSAMPLE register.
+#define ED_RSSISCALE 5     ///< Factor needed to calculate the ED result based on the data from the RADIO peripheral.
 #else
 #error "Selected chip is not supported."
 #endif
+
+#define EDSAMPLE_MIN_REPORTED_VALUE (PHY_MIN_RECEIVER_SENSITIVITY - ED_RSSIOFFS + 10) ///< Minimal reported EDSAMPLE value (reported as 0)
+#define EDSAMPLE_MAX_REPORTED_VALUE (ED_RESULT_MAX / ED_RSSISCALE)                    ///< Maximal reported EDSAMPLE value (reported as 255)
+
+/**
+ * @brief  Converts the energy level received during the energy detection procedure to a dBm value.
+ *
+ * @param[in]  energy_level Energy level value compliant with the 802.15.4 specification (0-255)
+ *
+ * @return  Result of the energy detection procedure in dBm.
+ */
+static inline int8_t nrf_802154_addons_dbm_from_energy_level_calculate(uint8_t energy_level)
+{
+    return ((int16_t)(EDSAMPLE_MAX_REPORTED_VALUE - EDSAMPLE_MIN_REPORTED_VALUE) *
+            ((int16_t)energy_level)) /
+           ED_RESULT_MAX + EDSAMPLE_MIN_REPORTED_VALUE + ED_RSSIOFFS;
+}
+
+#endif // NRF_802154_NRFX_ADDONS_H__
diff --git a/drivers/nrf_802154/driver/src/nrf_802154_rssi.c b/drivers/nrf_802154/driver/src/nrf_802154_rssi.c
index 438313f..9dafbc4 100644
--- a/drivers/nrf_802154/driver/src/nrf_802154_rssi.c
+++ b/drivers/nrf_802154/driver/src/nrf_802154_rssi.c
@@ -38,6 +38,8 @@
  *
  */
 #include "nrf_802154_rssi.h"
+#include "nrf_802154_nrfx_addons.h"
+#include "nrf_802154_const.h"
 
 #include "nrf.h"
 #include <stdint.h>
@@ -86,6 +88,8 @@ int8_t nrf_802154_rssi_sample_temp_corr_value_get(uint8_t rssi_sample)
     }
     else
     {
+        // nRF52840 cannot work for a temperature above 85 degrees Celsius, so this part won't affect its operation,
+        // even if it isn't present in its errata.
         result = -4;
     }
 #else
@@ -107,10 +111,10 @@ int8_t nrf_802154_rssi_sample_temp_corr_value_get(uint8_t rssi_sample)
  *
  *  Coefficients were calculated as round(x * RSSI_COEFF_BASE) based on Errata 87.
  */
-#define RSSI_COEFF_A0   30198989L /* Initial value: 7.2    */
-#define RSSI_COEFF_A1   6543114L  /* Initial value: 1.56   */
-#define RSSI_COEFF_A2   41524L    /* Initial value: 9.9e-3 */
-#define RSSI_COEFF_A3   205L      /* Initial value: 4.9e-5 */
+#define RSSI_COEFF_A0   30198989L /* Initial value: 7.2           */
+#define RSSI_COEFF_A1   6543114L  /* Initial value: 1.56          */
+#define RSSI_COEFF_A2   41524L    /* Initial value: 9.9e-3        */
+#define RSSI_COEFF_A3   205L      /* Initial value: 4.9e-5        */
 #define RSSI_COEFF_TEMP 209715L   /* Initial value: 0.05   */
 /** @brief Value used to increase precision of calculations. */
 #define RSSI_COEFF_BASE (1UL << 22U)
@@ -164,7 +168,7 @@ uint8_t nrf_802154_rssi_lqi_corrected_get(uint8_t lqi)
     return lqi - nrf_802154_rssi_sample_temp_corr_value_get(lqi);
 }
 
-uint8_t nrf_802154_rssi_ed_corrected_get(uint8_t ed)
+int16_t nrf_802154_rssi_ed_corrected_get(int16_t ed)
 {
     return ed - nrf_802154_rssi_sample_temp_corr_value_get(ed);
 }
@@ -173,3 +177,31 @@ uint8_t nrf_802154_rssi_cca_ed_threshold_corrected_get(uint8_t cca_ed)
 {
     return cca_ed - nrf_802154_rssi_sample_temp_corr_value_get(cca_ed);
 }
+
+uint8_t nrf_802154_rssi_ed_sample_convert(uint8_t ed_sample)
+{
+    int16_t result;
+
+    result = nrf_802154_rssi_ed_corrected_get(ed_sample);
+    result = ED_RESULT_MAX * (result - EDSAMPLE_MIN_REPORTED_VALUE) /
+             (EDSAMPLE_MAX_REPORTED_VALUE - EDSAMPLE_MIN_REPORTED_VALUE);
+
+    if (result < 0)
+    {
+        result = 0;
+    }
+
+    if (result > ED_RESULT_MAX)
+    {
+        result = ED_RESULT_MAX;
+    }
+
+    return (uint8_t)result;
+}
+
+int8_t nrf_802154_rssi_dbm_from_energy_level_calculate(uint8_t energy_level)
+{
+    return ((int16_t)(EDSAMPLE_MAX_REPORTED_VALUE - EDSAMPLE_MIN_REPORTED_VALUE) *
+            ((int16_t)energy_level)) /
+           ED_RESULT_MAX + EDSAMPLE_MIN_REPORTED_VALUE + ED_RSSIOFFS;
+}
diff --git a/drivers/nrf_802154/driver/src/nrf_802154_rssi.h b/drivers/nrf_802154/driver/src/nrf_802154_rssi.h
index 107e709..7604c8c 100644
--- a/drivers/nrf_802154/driver/src/nrf_802154_rssi.h
+++ b/drivers/nrf_802154/driver/src/nrf_802154_rssi.h
@@ -80,7 +80,7 @@ uint8_t nrf_802154_rssi_lqi_corrected_get(uint8_t lqi);
  *
  * @returns EDSAMPLE value corrected by a temperature factor.
  */
-uint8_t nrf_802154_rssi_ed_corrected_get(uint8_t ed);
+int16_t nrf_802154_rssi_ed_corrected_get(int16_t ed);
 
 /**
  * @brief Adjusts the CCA ED threshold value using a temperature correction factor.
@@ -91,6 +91,24 @@ uint8_t nrf_802154_rssi_ed_corrected_get(uint8_t ed);
  */
 uint8_t nrf_802154_rssi_cca_ed_threshold_corrected_get(uint8_t cca_ed);
 
+/**
+ * @brief Convert the hardware reported energy detection value to a value compliant with the 802.15.4 specification.
+ *
+ * @param[in]  edsample  The hardware reported value
+ *
+ * @returns 802.15.4 compliant energy detection value.
+ */
+uint8_t nrf_802154_rssi_ed_sample_convert(uint8_t ed_sample);
+
+/**
+ * @brief  Converts the energy level received during the energy detection procedure to a dBm value.
+ *
+ * @param[in]  energy_level  Energy level passed by @ref nrf_802154_energy_detected.
+ *
+ * @return  Result of the energy detection procedure in dBm.
+ */
+int8_t nrf_802154_rssi_dbm_from_energy_level_calculate(uint8_t energy_level);
+
 /**
  *@}
  **/
diff --git a/drivers/nrf_802154/driver/src/nrf_802154_trx.c b/drivers/nrf_802154/driver/src/nrf_802154_trx.c
index 167eec2..e2d12af 100644
--- a/drivers/nrf_802154/driver/src/nrf_802154_trx.c
+++ b/drivers/nrf_802154/driver/src/nrf_802154_trx.c
@@ -41,7 +41,6 @@
 
 #include "nrf_802154_config.h"
 #include "nrf_802154_const.h"
-#include "nrf_802154_types.h"
 #include "nrf_802154_peripherals.h"
 #include "nrf_802154_pib.h"
 #include "nrf_802154_rssi.h"
@@ -198,6 +197,7 @@ static nrf_802154_flags_t m_flags; ///< Flags used to store the current driver s
 /** @brief Value of TIMER internal counter from which the counting is resumed on RADIO.EVENTS_END event. */
 static volatile uint32_t m_timer_value_on_radio_end_event;
 static volatile bool     m_transmit_with_cca;
+static int8_t            m_fem_gain_in_disabled;
 
 static void rxframe_finish_disable_ppis(void);
 static void rxack_finish_disable_ppis(void);
@@ -321,8 +321,9 @@ static void fem_for_lna_reset(void)
  *
  * @note This function must be called before ramp up PPIs are configured.
  */
-static void fem_for_pa_set(void)
+static void fem_for_pa_set(int8_t gain)
 {
+    (void)mpsl_fem_pa_gain_set(gain);
     if (mpsl_fem_pa_configuration_set(&m_activate_tx_cc0, NULL) == 0)
     {
         nrf_timer_shorts_enable(m_activate_tx_cc0.event.timer.p_timer_instance,
@@ -347,10 +348,12 @@ static void fem_for_pa_reset(void)
  *
  * @note This function must be called before ramp up PPIs are configured.
  */
-static void fem_for_tx_set(bool cca)
+static void fem_for_tx_set(bool cca, int8_t gain)
 {
     bool success;
 
+    (void)mpsl_fem_pa_gain_set(gain);
+
     if (cca)
     {
         bool pa_set  = false;
@@ -461,6 +464,7 @@ void nrf_802154_trx_module_reset(void)
     m_trx_state                      = TRX_STATE_DISABLED;
     m_timer_value_on_radio_end_event = 0;
     m_transmit_with_cca              = false;
+    m_fem_gain_in_disabled           = 0;
     mp_receive_buffer                = NULL;
 
     memset(&m_flags, 0, sizeof(m_flags));
@@ -535,6 +539,8 @@ void nrf_802154_trx_enable(void)
 
     assert(nrf_radio_shorts_get(NRF_RADIO) == SHORTS_IDLE);
 
+    mpsl_fem_pa_is_configured(&m_fem_gain_in_disabled);
+
 #if defined(NRF52840_XXAA) || \
     defined(NRF52833_XXAA) || \
     defined(NRF52820_XXAA) || \
@@ -647,6 +653,9 @@ void nrf_802154_trx_disable(void)
         mpsl_fem_pa_configuration_clear();
         mpsl_fem_abort_clear();
 
+        /* Restore gain of the FEM to the state latched in nrf_802154_trx_enable */
+        (void)mpsl_fem_pa_gain_set(m_fem_gain_in_disabled);
+
         if (m_trx_state != TRX_STATE_IDLE)
         {
             fem_power_down_now();
@@ -909,7 +918,7 @@ bool nrf_802154_trx_receive_buffer_set(void * p_receive_buffer)
 
 void nrf_802154_trx_receive_frame(uint8_t                                bcc,
                                   nrf_802154_trx_receive_notifications_t notifications_mask,
-                                  int8_t                                 ack_tx_power)
+                                  const nrf_802154_tx_power_split_t    * p_ack_tx_power)
 {
     nrf_802154_log_function_enter(NRF_802154_LOG_VERBOSITY_LOW);
 
@@ -928,7 +937,7 @@ void nrf_802154_trx_receive_frame(uint8_t                                bcc,
 
     m_flags.rssi_settled = false;
 
-    nrf_radio_txpower_set(NRF_RADIO, (nrf_radio_txpower_t)ack_tx_power);
+    nrf_radio_txpower_set(NRF_RADIO, p_ack_tx_power->radio_tx_power);
 
     if (mp_receive_buffer != NULL)
     {
@@ -1014,6 +1023,9 @@ void nrf_802154_trx_receive_frame(uint8_t                                bcc,
         nrf_timer_cc_set(NRF_802154_TIMER_INSTANCE, NRF_TIMER_CC_CHANNEL0, delta_time);
     }
 
+    // Set FEM PA gain for ACK transmission
+    mpsl_fem_pa_gain_set(p_ack_tx_power->fem_gain);
+
     m_timer_value_on_radio_end_event = delta_time;
 
     // Select antenna
@@ -1140,7 +1152,7 @@ bool nrf_802154_trx_rssi_sample_is_available(void)
 
 void nrf_802154_trx_transmit_frame(const void                            * p_transmit_buffer,
                                    bool                                    cca,
-                                   int8_t                                  tx_power,
+                                   const nrf_802154_tx_power_split_t     * p_tx_power,
                                    nrf_802154_trx_transmit_notifications_t notifications_mask)
 {
     nrf_802154_log_function_enter(NRF_802154_LOG_VERBOSITY_LOW);
@@ -1153,7 +1165,8 @@ void nrf_802154_trx_transmit_frame(const void                            * p_tra
     m_trx_state         = TRX_STATE_TXFRAME;
     m_transmit_with_cca = cca;
 
-    nrf_radio_txpower_set(NRF_RADIO, (nrf_radio_txpower_t)tx_power);
+    nrf_radio_txpower_set(NRF_RADIO, p_tx_power->radio_tx_power);
+
     nrf_radio_packetptr_set(NRF_RADIO, p_transmit_buffer);
 
     // Set shorts
@@ -1197,7 +1210,7 @@ void nrf_802154_trx_transmit_frame(const void                            * p_tra
 
     nrf_radio_int_enable(NRF_RADIO, ints_to_enable);
 
-    fem_for_tx_set(cca);
+    fem_for_tx_set(cca, p_tx_power->fem_gain);
     nrf_802154_trx_antenna_update();
     nrf_802154_trx_ppi_for_ramp_up_set(cca ? NRF_RADIO_TASK_RXEN : NRF_RADIO_TASK_TXEN, false);
 
@@ -1769,7 +1782,7 @@ static void standalone_cca_abort(void)
 
 #if NRF_802154_CARRIER_FUNCTIONS_ENABLED
 
-void nrf_802154_trx_continuous_carrier(int8_t tx_power)
+void nrf_802154_trx_continuous_carrier(const nrf_802154_tx_power_split_t * p_tx_power)
 {
     nrf_802154_log_function_enter(NRF_802154_LOG_VERBOSITY_LOW);
 
@@ -1778,10 +1791,10 @@ void nrf_802154_trx_continuous_carrier(int8_t tx_power)
     m_trx_state = TRX_STATE_CONTINUOUS_CARRIER;
 
     // Set Tx Power
-    nrf_radio_txpower_set(NRF_RADIO, (nrf_radio_txpower_t)tx_power);
+    nrf_radio_txpower_set(NRF_RADIO, p_tx_power->radio_tx_power);
 
     // Set FEM
-    fem_for_pa_set();
+    fem_for_pa_set(p_tx_power->fem_gain);
 
     // Select antenna
     nrf_802154_trx_antenna_update();
@@ -1824,7 +1837,8 @@ static void continuous_carrier_abort(void)
     nrf_802154_log_function_exit(NRF_802154_LOG_VERBOSITY_HIGH);
 }
 
-void nrf_802154_trx_modulated_carrier(const void * p_transmit_buffer, int8_t tx_power)
+void nrf_802154_trx_modulated_carrier(const void                        * p_transmit_buffer,
+                                      const nrf_802154_tx_power_split_t * p_tx_power)
 {
     nrf_802154_log_function_enter(NRF_802154_LOG_VERBOSITY_LOW);
 
@@ -1834,7 +1848,7 @@ void nrf_802154_trx_modulated_carrier(const void * p_transmit_buffer, int8_t tx_
     m_trx_state = TRX_STATE_MODULATED_CARRIER;
 
     // Set Tx Power
-    nrf_radio_txpower_set(NRF_RADIO, (nrf_radio_txpower_t)tx_power);
+    nrf_radio_txpower_set(NRF_RADIO, p_tx_power->radio_tx_power);
 
     // Set Tx buffer
     nrf_radio_packetptr_set(NRF_RADIO, p_transmit_buffer);
@@ -1843,7 +1857,7 @@ void nrf_802154_trx_modulated_carrier(const void * p_transmit_buffer, int8_t tx_
     nrf_radio_shorts_set(NRF_RADIO, SHORTS_MOD_CARRIER);
 
     // Set FEM
-    fem_for_pa_set();
+    fem_for_pa_set(p_tx_power->fem_gain);
 
     // Select antenna
     nrf_802154_trx_antenna_update();
diff --git a/drivers/nrf_802154/driver/src/nrf_802154_trx.h b/drivers/nrf_802154/driver/src/nrf_802154_trx.h
index 235309c..10a212b 100644
--- a/drivers/nrf_802154/driver/src/nrf_802154_trx.h
+++ b/drivers/nrf_802154/driver/src/nrf_802154_trx.h
@@ -47,6 +47,7 @@
 
 #include "nrf_802154_config.h"
 #include "nrf_802154_sl_types.h"
+#include "nrf_802154_types.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -208,11 +209,11 @@ void nrf_802154_trx_cca_configuration_update(void);
  * @param[in] notifications_mask Selects additional notifications generated during a frame reception.
  *                  It is bitwise combination of @ref nrf_802154_trx_receive_notifications_t values.
  *                  When NRF_802154_DISABLE_BCC_MATCHING != 0, flag @ref TRX_RECEIVE_NOTIFICATION_PRESTARTED is forbidden.
- * @param[in] ack_tx_power Selects the power which should be used to transmitted an ACK if required.
+ * @param[in] p_ack_tx_power Selects the power which should be used to transmitted an ACK if required.
  */
 void nrf_802154_trx_receive_frame(uint8_t                                bcc,
                                   nrf_802154_trx_receive_notifications_t notifications_mask,
-                                  int8_t                                 ack_tx_power);
+                                  const nrf_802154_tx_power_split_t    * p_ack_tx_power);
 
 /**@brief Puts the trx module into receive ACK mode.
  *
@@ -340,14 +341,14 @@ bool nrf_802154_trx_receive_buffer_set(void * p_receive_buffer);
  * @param cca                Selects if CCA procedure should be performed prior to
  *                           real transmission. If false no cca will be performed.
  *                           If true, cca will be performed.
- * @param tx_power           Transmit power in dBm.
+ * @param p_tx_power         Transmit power in dBm.
  * @param notifications_mask Selects additional notifications generated during a frame transmission.
  *                           It is bitwise combination of @ref nrf_802154_trx_transmit_notifications_t values.
  * @note To transmit ack after frame is received use @ref nrf_802154_trx_transmit_ack.
  */
 void nrf_802154_trx_transmit_frame(const void                            * p_transmit_buffer,
                                    bool                                    cca,
-                                   int8_t                                  tx_power,
+                                   const nrf_802154_tx_power_split_t     * p_tx_power,
                                    nrf_802154_trx_transmit_notifications_t notifications_mask);
 
 /**@brief Puts the trx module into transmit ACK mode.
@@ -390,12 +391,12 @@ void nrf_802154_trx_standalone_cca(void);
 
 /**@brief Starts generating continuous carrier.
  *
- * @param[in] tx_power  Transmit power in dBm.
+ * @param[in] p_tx_power  Transmit power in dBm.
  *
  * Generation of a continuous carrier generates no handlers. It may be terminated by a call to
  * @ref nrf_802154_trx_abort or @ref nrf_802154_trx_disable.
  */
-void nrf_802154_trx_continuous_carrier(int8_t tx_power);
+void nrf_802154_trx_continuous_carrier(const nrf_802154_tx_power_split_t * p_tx_power);
 
 /**@brief Restarts generating continuous carrier
  *
@@ -410,9 +411,10 @@ void nrf_802154_trx_continuous_carrier_restart(void);
 /**@brief Starts generating modulated carrier with given buffer.
  *
  * @param[in] p_transmit_buffer Pointer to a buffer used for modulating the carrier wave.
- * @param[in] tx_power          Transmit power in dBm.
+ * @param[in] p_tx_power        Transmit power in dBm.
  */
-void nrf_802154_trx_modulated_carrier(const void * p_transmit_buffer, int8_t tx_power);
+void nrf_802154_trx_modulated_carrier(const void                        * p_transmit_buffer,
+                                      const nrf_802154_tx_power_split_t * p_tx_power);
 
 /** @brief Restarts generating modulated carrier.*/
 void nrf_802154_trx_modulated_carrier_restart(void);
diff --git a/drivers/nrf_802154/driver/src/nrf_802154_tx_power.c b/drivers/nrf_802154/driver/src/nrf_802154_tx_power.c
index e1881f6..971543a 100644
--- a/drivers/nrf_802154/driver/src/nrf_802154_tx_power.c
+++ b/drivers/nrf_802154/driver/src/nrf_802154_tx_power.c
@@ -35,7 +35,7 @@
 #include "nrf_802154_tx_power.h"
 #include "nrf_802154_pib.h"
 #include "nrf_802154_utils.h"
-#include "fal/nrf_802154_fal.h"
+#include "nrf_802154_fal.h"
 
 /**
  * Converts TX power integer values to RADIO TX power allowed values.
@@ -98,38 +98,60 @@ static nrf_radio_txpower_t to_radio_tx_power_convert(int8_t integer_tx_power)
 }
 
 /**
- * Converts TX power integer values to RADIO TX power allowed values, constrained by the allowed TX power allowed for
- * a specific channel.
+ * Constrains the TX power by the maximum allowed TX power allowed for a specific channel, splits it into
+ * components to be applied on each stage of the transmit path and for the TX power applied to the RADIO peripheral
+ * converts the integer value to a RADIO TX power allowed value.
  *
- * @param[in]  channel   The channel based on which the power should be constrained
- * @param[in]  tx_power  Unconstrained TX power integer value.
+ * @param[in]  channel      The channel based on which the power should be constrained
+ * @param[in]  tx_power     Unconstrained TX power integer value.
+ * @param[out] split_power  Pointer to the structure holding TX power split into constrained and converted components.
  *
- * @retval     RADIO TX power allowed and constrained value.
+ * @retval  true            Calculation performed successfully.
+ * @retval  false           Given @p power cannot be achieved. If requested value is too high
+ *                          the @p p_tx_power_split will be set to a value representing maximum
+ *                          achievable power. If the requested value is too low, the
+ *                          @p p_tx_power_split will be set to a value representing minimum
+ *                          achievable power.
  */
-static nrf_radio_txpower_t constrain_and_convert_tx_power(uint8_t channel, int8_t tx_power)
+static bool constrain_split_and_convert_tx_power(
+    uint8_t                             channel,
+    int8_t                              tx_power,
+    nrf_802154_tx_power_split_t * const split_power)
 {
-    int8_t constrained_power = nrf_802154_fal_tx_power_get(channel, tx_power);
+    int32_t                         ret             = 0;
+    nrf_802154_fal_tx_power_split_t fal_split_power = {0};
 
-    return to_radio_tx_power_convert(constrained_power);
+    ret = nrf_802154_fal_tx_power_split(channel, tx_power, &fal_split_power);
+
+    split_power->fem_gain       = fal_split_power.fem_gain;
+    split_power->radio_tx_power = to_radio_tx_power_convert(fal_split_power.radio_tx_power);
+
+    return (0 == ret);
 }
 
-nrf_radio_txpower_t nrf_802154_tx_power_convert_metadata_to_raw_value(
-    uint8_t                        channel,
-    nrf_802154_tx_power_metadata_t tx_power)
+bool nrf_802154_tx_power_convert_metadata_to_tx_power_split(
+    uint8_t                             channel,
+    nrf_802154_tx_power_metadata_t      tx_power,
+    nrf_802154_tx_power_split_t * const p_tx_power_split)
 {
     int8_t power_unconstrained =
         tx_power.use_metadata_value ? tx_power.power : nrf_802154_pib_tx_power_get();
 
-    return constrain_and_convert_tx_power(channel, power_unconstrained);
+    return constrain_split_and_convert_tx_power(channel, power_unconstrained, p_tx_power_split);
 }
 
-nrf_radio_txpower_t nrf_802154_tx_power_constrained_pib_power_get(void)
+bool nrf_802154_tx_power_split_pib_power_get(nrf_802154_tx_power_split_t * const p_split_power)
 {
-    return constrain_and_convert_tx_power(nrf_802154_pib_channel_get(),
-                                          nrf_802154_pib_tx_power_get());
+    return constrain_split_and_convert_tx_power(nrf_802154_pib_channel_get(),
+                                                nrf_802154_pib_tx_power_get(),
+                                                p_split_power);
 }
 
-nrf_radio_txpower_t nrf_802154_tx_power_constrained_pib_power_for_channel_get(uint8_t channel)
+bool nrf_802154_tx_power_split_pib_power_for_channel_get(
+    uint8_t                             channel,
+    nrf_802154_tx_power_split_t * const p_split_power)
 {
-    return constrain_and_convert_tx_power(channel, nrf_802154_pib_tx_power_get());
+    return constrain_split_and_convert_tx_power(channel,
+                                                nrf_802154_pib_tx_power_get(),
+                                                p_split_power);
 }
diff --git a/drivers/nrf_802154/driver/src/nrf_802154_tx_power.h b/drivers/nrf_802154/driver/src/nrf_802154_tx_power.h
index b175e86..1116c1a 100644
--- a/drivers/nrf_802154/driver/src/nrf_802154_tx_power.h
+++ b/drivers/nrf_802154/driver/src/nrf_802154_tx_power.h
@@ -39,37 +39,63 @@
 
 #include "nrf_802154.h"
 
-/**@brief Convert tx_power value passed through metadata to a raw value in dBm used by the core module.
+/**@brief Convert tx_power value passed through metadata to raw components in dBms to be applied
+ *        on each stage of the transmit path.
 
- * This function also ensures that the value meets the constraints for the current channel.
+ * This function also ensures that the values meet the constraints for the given channel.
  *
- * @param[in] channel      The channel to be used for transmission
- * @param[in] tx_power     The value passed to the transmit metadata.
+ * @param[in]  channel             The channel to be used for transmission
+ * @param[in]  tx_power            The value passed to the transmit metadata.
+ * @param[out] p_tx_power_split    Pointer to the structure holding TX power split into raw components in dBm.
  *
- * @retval                 Returns the power in dBm which will be used to transmit the frame.
+ * @retval  true            Calculation performed successfully.
+ * @retval  false           Given @p tx_power cannot be achieved. If requested value is too high
+ *                          the @p p_tx_power_split will be set to a value representing maximum
+ *                          achievable power. If the requested value is too low, the
+ *                          @p p_tx_power_split will be set to a value representing minimum
+ *                          achievable power.
  *
  */
-nrf_radio_txpower_t nrf_802154_tx_power_convert_metadata_to_raw_value(
-    uint8_t                        channel,
-    nrf_802154_tx_power_metadata_t tx_power);
+bool nrf_802154_tx_power_convert_metadata_to_tx_power_split(
+    uint8_t                             channel,
+    nrf_802154_tx_power_metadata_t      tx_power,
+    nrf_802154_tx_power_split_t * const p_tx_power_split);
 
-/**@brief Get the transmit power stored in PIB after applying the power constraints for the current channel.
+/**@brief Get the transmit power stored in PIB after applying the power constraints for the current channel and splitting
+ *        into components to be applied on each stage of the transmit path.
  *
  * The current channel is acquired from PIB.
  *
- * @retval                 Returns the constrained power in dBm which will be used to transmit the frame.
+ * @param[out] p_split_power  Pointer to the structure holding TX power split into components in dBm.
  *
- */
-nrf_radio_txpower_t nrf_802154_tx_power_constrained_pib_power_get(void);
+ * @retval  true            Calculation performed successfully.
+ * @retval  false           cannot be achieved. If requested value is too high
+ *                          Current power set in PIB the @p p_split_power will be set to a value representing maximum
+ *                          achievable power. If the requested value is too low, the
+ *                          @p p_split_power will be set to a value representing minimum
+ *                          achievable power.
 
-/**@brief Get the transmit power stored in PIB after applying the power constraints for the given channel.
- *
- * @param[in] channel      The channel based on which the power should be constrained
- *
- * @retval                 Returns the power in dBm which will be used to transmit the frame.
  *
  */
-nrf_radio_txpower_t nrf_802154_tx_power_constrained_pib_power_for_channel_get(uint8_t channel);
+bool nrf_802154_tx_power_split_pib_power_get(nrf_802154_tx_power_split_t * const p_split_power);
+
+/**@brief Get the transmit power stored in PIB after applying the power constraints for the given channel and splitting
+ *        into components to be applied on each stage of the transmit path.
+ *
+ * @param[in]  channel        The channel based on which the power should be constrained
+ * @param[out] p_split_power  Pointer to the structure holding TX power split into components in dBm.
+ *
+ * @retval  true            Calculation performed successfully.
+ * @retval  false           Current power set in PIB cannot be achieved. If requested value is too high
+ *                          the @p p_split_power will be set to a value representing maximum
+ *                          achievable power. If the requested value is too low, the
+ *                          @p p_split_power will be set to a value representing minimum
+ *                          achievable power.
+ *
+ */
+bool nrf_802154_tx_power_split_pib_power_for_channel_get(
+    uint8_t                             channel,
+    nrf_802154_tx_power_split_t * const p_split_power);
 
 /**
  *@}
diff --git a/drivers/nrf_802154/serialization/include/host/nrf_802154.h b/drivers/nrf_802154/serialization/include/host/nrf_802154.h
index d1da659..e30d585 100644
--- a/drivers/nrf_802154/serialization/include/host/nrf_802154.h
+++ b/drivers/nrf_802154/serialization/include/host/nrf_802154.h
@@ -713,6 +713,17 @@ int8_t nrf_802154_dbm_from_energy_level_calculate(uint8_t energy_level);
  */
 uint64_t nrf_802154_first_symbol_timestamp_get(uint64_t end_timestamp, uint8_t psdu_length);
 
+/**
+ * @brief  Calculates the timestamp of the MAC Header in a received frame.
+ *
+ * @param[in]  end_timestamp  Timestamp of the end of the last symbol in the frame,
+ *                            in microseconds.
+ * @param[in]  psdu_length    Number of bytes in the frame PSDU.
+ *
+ * @return  Timestamp of the MHR of a given frame, in microseconds.
+ */
+uint64_t nrf_802154_mhr_timestamp_get(uint64_t end_timestamp, uint8_t psdu_length);
+
 /**
  * @}
  * @defgroup nrf_802154_ifs Inter-frame spacing feature
diff --git a/drivers/nrf_802154/serialization/include/host/nrf_802154_callouts.h b/drivers/nrf_802154/serialization/include/host/nrf_802154_callouts.h
index 57481f6..f7a752e 100644
--- a/drivers/nrf_802154/serialization/include/host/nrf_802154_callouts.h
+++ b/drivers/nrf_802154/serialization/include/host/nrf_802154_callouts.h
@@ -72,7 +72,9 @@ extern void nrf_802154_cca_failed(nrf_802154_cca_error_t error);
  * @brief Notifies that the energy detection procedure finished.
  *
  * @note This function passes the EnergyLevel defined in the 802.15.4-2006 specification:
- *       0x00 - 0xff, proportionally to the detected energy level (dBm above receiver sensitivity).
+ *       0x00 - 0xff, where 0x00 represents -75dBm (10dBm above the worst allowed sensitivity level,
+ *       which is -85dBm) and 0xff is the highest possible energy detection level, for which
+ *       the measurements are guaranteed map linearly to the real energy level in dBm.
  *       To calculate the result in dBm, use @ref nrf_802154_dbm_from_energy_level_calculate.
  *
  * @param[in]  result  Maximum energy detected during the energy detection procedure.
diff --git a/drivers/nrf_802154/serialization/include/host/nrf_802154_const.h b/drivers/nrf_802154/serialization/include/host/nrf_802154_const.h
index e83bee0..cd0873d 100644
--- a/drivers/nrf_802154/serialization/include/host/nrf_802154_const.h
+++ b/drivers/nrf_802154/serialization/include/host/nrf_802154_const.h
@@ -179,6 +179,8 @@
 #define PHY_SYMBOLS_PER_OCTET           2                                            ///< Number of symbols in a single byte (octet).
 #define PHY_SHR_SYMBOLS                 10                                           ///< Number of symbols in the Synchronization Header (SHR).
 
+#define PHY_MIN_RECEIVER_SENSITIVITY    -85                                          ///< Lowest receiver sensitivity level in dBm according to 802.15.4-2020 specification, chapter 12.3.4
+
 #define ED_RESULT_MAX                   0xff                                         ///< Maximal ED result.
 
 #define BROADCAST_ADDRESS               ((uint8_t[SHORT_ADDRESS_SIZE]) {0xff, 0xff}) ///< Broadcast short address.
@@ -223,7 +225,4 @@
 #define IE_DATA_OFFSET                  0x02                                         ///< Information element data offset
 #define IE_HEADER_ELEMENT_ID_OFFSET     0x07                                         ///< Bit offset of Element ID field in a Header IE header.
 
-#define ED_MIN_DBM                      (-92)                                        ///< dBm value corresponding to value 0 in the EDSAMPLE register.
-#define ED_RESULT_FACTOR                4                                            ///< Factor needed to calculate the ED result based on the data from the RADIO peripheral.
-
 #endif  // NRF_802154_CONST_H_
diff --git a/drivers/nrf_802154/serialization/src/include/nrf_802154_nrfx_addons.h b/drivers/nrf_802154/serialization/src/include/nrf_802154_nrfx_addons.h
new file mode 100644
index 0000000..d655f50
--- /dev/null
+++ b/drivers/nrf_802154/serialization/src/include/nrf_802154_nrfx_addons.h
@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2022, Nordic Semiconductor ASA
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
+ *    contributors may be used to endorse or promote products derived from this
+ *    software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef NRF_802154_NRFX_ADDONS_H__
+#define NRF_802154_NRFX_ADDONS_H__
+
+#include "nrf.h"
+#include "nrf_802154_const.h"
+
+/* The usage of ED_RSSISCALE is described imprecisely in the nRF product specifications. The meaning of
+   this constant is the following: If we calculate ed_scaled =  EDSAMPLE *  ED_RSSISCALE, then
+   it is guaranteed that in the range 0-255 ed_scaled maps linearly to the ED power in dBm. This means,
+   that the maximum value in EDSAMPLE which can be reported in compliance with the 802.15.4 specification is
+   255/ED_RSSISCALE. */
+
+#if defined (NRF52840_XXAA) || defined(NRF52811_XXAA)
+#define ED_RSSIOFFS  (-92) ///< dBm value corresponding to value 0 in the EDSAMPLE register.
+#define ED_RSSISCALE 4     ///< Factor needed to calculate the ED result based on the data from the RADIO peripheral.
+#elif defined (NRF52833_XXAA) || defined(NRF52820_XXAA) || defined(NRF5340_XXAA)
+#define ED_RSSIOFFS  (-93) ///< dBm value corresponding to value 0 in the EDSAMPLE register.
+#define ED_RSSISCALE 5     ///< Factor needed to calculate the ED result based on the data from the RADIO peripheral.
+#else
+#error "Selected chip is not supported."
+#endif
+
+#define EDSAMPLE_MIN_REPORTED_VALUE (PHY_MIN_RECEIVER_SENSITIVITY - ED_RSSIOFFS + 10) ///< Minimal reported EDSAMPLE value (reported as 0)
+#define EDSAMPLE_MAX_REPORTED_VALUE (ED_RESULT_MAX / ED_RSSISCALE)                    ///< Maximal reported EDSAMPLE value (reported as 255)
+
+/**
+ * @brief  Converts the energy level received during the energy detection procedure to a dBm value.
+ *
+ * @param[in]  energy_level Energy level value compliant with the 802.15.4 specification (0-255)
+ *
+ * @return  Result of the energy detection procedure in dBm.
+ */
+static inline int8_t nrf_802154_addons_dbm_from_energy_level_calculate(uint8_t energy_level)
+{
+    return ((int16_t)(EDSAMPLE_MAX_REPORTED_VALUE - EDSAMPLE_MIN_REPORTED_VALUE) *
+            ((int16_t)energy_level)) /
+           ED_RESULT_MAX + EDSAMPLE_MIN_REPORTED_VALUE + ED_RSSIOFFS;
+}
+
+#endif // NRF_802154_NRFX_ADDONS_H__
diff --git a/drivers/nrf_802154/serialization/src/nrf_802154_spinel_app.c b/drivers/nrf_802154/serialization/src/nrf_802154_spinel_app.c
index b3d9bbc..7582c40 100644
--- a/drivers/nrf_802154/serialization/src/nrf_802154_spinel_app.c
+++ b/drivers/nrf_802154/serialization/src/nrf_802154_spinel_app.c
@@ -63,6 +63,7 @@
 #include "nrf_802154.h"
 #include "nrf_802154_config.h"
 #include "nrf_802154_types.h"
+#include "nrf_802154_nrfx_addons.h"
 
 /**
  * @brief Wait with timeout for SPINEL_STATUS_OK to be received.
@@ -1489,8 +1490,9 @@ bool nrf_802154_transmit_raw_at(uint8_t                                 * p_data
         {
             .frame_props = NRF_802154_TRANSMITTED_FRAME_PROPS_DEFAULT_INIT,
             .cca         = true,
-            .channel     = 11,
-            .tx_power    = {.use_metadata_value = false}
+            // channel set to 0 will be replaced on net core by the current channel from PIB
+            .channel  = 0,
+            .tx_power = {.use_metadata_value = false}
         };
 
         p_metadata = &metadata_default;
@@ -1769,7 +1771,7 @@ bail:
 
 int8_t nrf_802154_dbm_from_energy_level_calculate(uint8_t energy_level)
 {
-    return ED_MIN_DBM + (energy_level / ED_RESULT_FACTOR);
+    return nrf_802154_addons_dbm_from_energy_level_calculate(energy_level);
 }
 
 uint64_t nrf_802154_first_symbol_timestamp_get(uint64_t end_timestamp, uint8_t psdu_length)
@@ -1781,6 +1783,11 @@ uint64_t nrf_802154_first_symbol_timestamp_get(uint64_t end_timestamp, uint8_t p
     return end_timestamp - (frame_symbols * PHY_US_PER_SYMBOL);
 }
 
+uint64_t nrf_802154_mhr_timestamp_get(uint64_t end_timestamp, uint8_t psdu_length)
+{
+    return end_timestamp - (psdu_length * PHY_SYMBOLS_PER_OCTET * PHY_US_PER_SYMBOL);
+}
+
 void nrf_802154_security_global_frame_counter_set(uint32_t frame_counter)
 {
     nrf_802154_ser_err_t res;
diff --git a/drivers/nrf_802154/serialization/src/nrf_802154_spinel_dec_net.c b/drivers/nrf_802154/serialization/src/nrf_802154_spinel_dec_net.c
index dea2923..3bd17cf 100644
--- a/drivers/nrf_802154/serialization/src/nrf_802154_spinel_dec_net.c
+++ b/drivers/nrf_802154/serialization/src/nrf_802154_spinel_dec_net.c
@@ -1354,6 +1354,13 @@ static nrf_802154_ser_err_t spinel_decode_prop_nrf_802154_transmit_raw_at(
         return NRF_802154_SERIALIZATION_ERROR_NO_MEMORY;
     }
 
+    // tx_metadata.channel set to 0 means that NULL was passed as metadata on app core
+    // and the channel should be set to the current channel from PIB
+    if (0 == tx_metadata.channel)
+    {
+        tx_metadata.channel = nrf_802154_channel_get();
+    }
+
     bool result = nrf_802154_transmit_raw_at(p_local_frame_ptr, tx_time, &tx_metadata);
 
     if (!result)
diff --git a/drivers/nrf_802154/driver/src/fal/nrf_802154_fal.h b/drivers/nrf_802154/sl/include/nrf_802154_fal.h
similarity index 68%
rename from drivers/nrf_802154/driver/src/fal/nrf_802154_fal.h
rename to drivers/nrf_802154/sl/include/nrf_802154_fal.h
index d2a8914..5ef1a33 100644
--- a/drivers/nrf_802154/driver/src/fal/nrf_802154_fal.h
+++ b/drivers/nrf_802154/sl/include/nrf_802154_fal.h
@@ -46,6 +46,15 @@
 extern "C" {
 #endif
 
+/**
+ * @brief Represents components of tx_power to be applied for stages on transmit path.
+ */
+typedef struct
+{
+    int8_t radio_tx_power; // !< TX power in dBm to be applied to the RADIO peripheral.
+    int8_t fem_gain;       // !< Gain of the Front-End Module in dB.
+} nrf_802154_fal_tx_power_split_t;
+
 /**
  * @brief Returns 'power' value.
  *
@@ -58,6 +67,20 @@ extern "C" {
  */
 int8_t nrf_802154_fal_tx_power_get(const uint8_t channel, const int8_t power);
 
+/** @brief Splits transmit power value into components to be applied on each stage on the transmit path.
+ *
+ * @note This is a stub implementation used when MPSL is not linked.
+ *
+ * @param[in]  channel          Ignored.
+ * @param[in]  power            TX power in dBm requested for transmission on air.
+ * @param[out] p_tx_power_split Components of tx_power to be applied for stages on transmit path.
+ *
+ * @returns Always 0.
+ */
+int32_t nrf_802154_fal_tx_power_split(const uint8_t                           channel,
+                                      const int8_t                            power,
+                                      nrf_802154_fal_tx_power_split_t * const p_tx_power_split);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/drivers/nrf_802154/sl/sl_opensource/include/protocol/mpsl_fem_protocol_api.h b/drivers/nrf_802154/sl/sl_opensource/include/protocol/mpsl_fem_protocol_api.h
index 17a919b..8748edb 100644
--- a/drivers/nrf_802154/sl/sl_opensource/include/protocol/mpsl_fem_protocol_api.h
+++ b/drivers/nrf_802154/sl/sl_opensource/include/protocol/mpsl_fem_protocol_api.h
@@ -103,6 +103,19 @@ typedef struct
 #endif
 } mpsl_fem_event_t;
 
+/** TX power, dBm. */
+typedef int8_t mpsl_tx_power_t;
+
+/** @brief Represents components of tx_power to be applied for stages on transmit path. */
+typedef struct
+{
+    /** TX power to be applied to the RADIO peripheral. */
+    mpsl_tx_power_t radio_tx_power;
+
+    /** Gain of the Front-End Module in dB. */
+    int8_t fem_gain;
+} mpsl_tx_power_split_t;
+
 /** @brief Disable Front End Module.
  *
  * Some Front End Module devices can be explicitly disabled after PA and LNA activities are
@@ -292,6 +305,38 @@ int32_t mpsl_fem_abort_clear(void);
  */
 void mpsl_fem_cleanup(void);
 
+/** @brief Splits transmit power value into components to be applied on each stage on transmit path.
+ *
+ * @note If the exact value of @p power cannot be achieved, this function attempts to use less
+ * power to not exceed constraint. However, if @p power is lower than the minimum achievable power,
+ * or larger than the maximum achievable power, the function returns failure.
+ *
+ * @param[in]  power            TX power requested for transmission on air.
+ * @param[out] p_tx_power_split Components of tx_power to be applied for stages on transmit path.
+ *
+ * @retval  0               Calculation performed successfully.
+ * @retval  - ::NRF_EINVAL  Given @p power cannot be achieved. If requested value is too high
+ *                          the @p p_tx_power_split will be set to a value representing maximum
+ *                          achievable power. If the requested value is too low, the
+ *                          @p p_tx_power_split will be set to a value representing minimum
+ *                          achievable power.
+ */
+int32_t mpsl_fem_tx_power_split(const mpsl_tx_power_t power,
+                                mpsl_tx_power_split_t *const p_tx_power_split);
+
+/** @brief Sets PA gain.
+ *
+ * @note The gain set by this function will be applied to radio transmissions
+ * following the call. If the function is called during radio transmission
+ * or during ramp-up for transmission it is unspecified if the gain is applied.
+ *
+ * @param[in] gain Gain in dB to be set.
+ *
+ * @retval   0             Gain has been set successfully.
+ * @retval   -NRF_EINVAL   Gain could not be set. Provided @p gain is invalid.
+ */
+int32_t mpsl_fem_pa_gain_set(int8_t gain);
+
 /** @brief Checks if the PA signaling is configured and enabled, and gets
  *  the configured gain in dB.
  *
diff --git a/drivers/nrf_802154/sl/sl_opensource/src/nrf_802154_sl_fem.c b/drivers/nrf_802154/sl/sl_opensource/src/nrf_802154_sl_fem.c
index f98c161..2cd7b52 100644
--- a/drivers/nrf_802154/sl/sl_opensource/src/nrf_802154_sl_fem.c
+++ b/drivers/nrf_802154/sl/sl_opensource/src/nrf_802154_sl_fem.c
@@ -37,6 +37,8 @@
 #include <stdbool.h>
 #include <stdint.h>
 
+#include "nrf_802154_fal.h"
+
 #include "protocol/mpsl_fem_protocol_api.h"
 
 #ifdef __cplusplus
@@ -110,6 +112,22 @@ void mpsl_fem_cleanup(void)
     // Intentionally empty
 }
 
+int32_t mpsl_fem_tx_power_split(const mpsl_tx_power_t         power,
+                                mpsl_tx_power_split_t * const p_tx_power_split)
+{
+    p_tx_power_split->radio_tx_power = power;
+    p_tx_power_split->fem_gain       = 0;
+
+    return 0;
+}
+
+int32_t mpsl_fem_pa_gain_set(int8_t gain)
+{
+    (void)gain;
+
+    return 0;
+}
+
 void mpsl_fem_pa_is_configured(int8_t * const p_gain)
 {
     (void)p_gain;
@@ -138,6 +156,18 @@ int8_t nrf_802154_fal_tx_power_get(const uint8_t channel, const int8_t power)
     return power;
 }
 
+int32_t nrf_802154_fal_tx_power_split(const uint8_t                           channel,
+                                      const int8_t                            power,
+                                      nrf_802154_fal_tx_power_split_t * const p_tx_power_split)
+{
+    (void)channel;
+
+    p_tx_power_split->radio_tx_power = power;
+    p_tx_power_split->fem_gain       = 0;
+
+    return 0;
+}
+
 #ifdef __cplusplus
 }
 #endif