diff --git a/libraries/technology/jesd204b/registermap-jesd-rx.xlsx b/libraries/technology/jesd204b/registermap-jesd-rx.xlsx
new file mode 100644
index 0000000000000000000000000000000000000000..d3140dbbdefb8090558542b5fdf899ea0107f87b
Binary files /dev/null and b/libraries/technology/jesd204b/registermap-jesd-rx.xlsx differ
diff --git a/libraries/technology/jesd204b/tech_jesd204b_pkg.vhd b/libraries/technology/jesd204b/tech_jesd204b_pkg.vhd
index b82c1bbb75b5c4a0550b4157081f3b8b5f57b69e..0c8ab4246b3823be04a822d3e9604dfad5a75f70 100644
--- a/libraries/technology/jesd204b/tech_jesd204b_pkg.vhd
+++ b/libraries/technology/jesd204b/tech_jesd204b_pkg.vhd
@@ -16,15 +16,13 @@
 -- See the License for the specific language governing permissions and
 -- limitations under the License.
 --
--------------------------------------------------------------------------------
-
 -------------------------------------------------------------------------------
 --
 -- Author: E. Kooistra
 -- Purpose: Test bench parameters for the JESD204B IP.
 -- Description:
 -- Remark:
--- .
+-- . From registermap-jesd-rx.xlsx
 -------------------------------------------------------------------------------
 
 LIBRARY IEEE, technology_lib;
@@ -36,19 +34,30 @@ PACKAGE tech_jesd204b_pkg IS
   CONSTANT tech_jesd204b_port_span_w             : NATURAL := 8;
   CONSTANT tech_jesd204b_port_span               : NATURAL := 2**tech_jesd204b_port_span_w;
 
-  CONSTANT tech_jesd204b_field_rx_err0_adr       : NATURAL := 16#60#;
+  CONSTANT tech_jesd204b_field_rx_syncn_sysref_ctrl_adr         : NATURAL := 16#54# / 4;
+  CONSTANT tech_jesd204b_field_rx_syncn_sysref_ctrl_link_reinit : NATURAL := 1;
+  CONSTANT tech_jesd204b_field_rx_syncn_sysref_ctrl_singled     : NATURAL := 2;
+  CONSTANT tech_jesd204b_field_rx_syncn_sysref_ctrl_alwayson    : NATURAL := 4;
+
+  CONSTANT tech_jesd204b_field_rx_err0_adr       : NATURAL := 16#60# / 4;
   CONSTANT tech_jesd204b_field_rx_err0_w         : NATURAL := 9;
   CONSTANT tech_jesd204b_field_rx_err0_lo        : NATURAL := 0;
   CONSTANT tech_jesd204b_field_rx_err0_hi        : NATURAL := tech_jesd204b_field_rx_err0_w-1 + tech_jesd204b_field_rx_err0_lo;
-  CONSTANT tech_jesd204b_field_rx_err1_adr       : NATURAL := 16#64#;
+  CONSTANT tech_jesd204b_field_rx_err1_adr       : NATURAL := 16#64# / 4;
   CONSTANT tech_jesd204b_field_rx_err1_w         : NATURAL := 10;
   CONSTANT tech_jesd204b_field_rx_err1_lo        : NATURAL := 0;
   CONSTANT tech_jesd204b_field_rx_err1_hi        : NATURAL := tech_jesd204b_field_rx_err1_w-1 + tech_jesd204b_field_rx_err1_lo;
-  CONSTANT tech_jesd204b_field_csr_rbd_count_adr : NATURAL := 16#80#;
+
+  CONSTANT tech_jesd204b_field_rx_err_enable_adr        : NATURAL := 16#74# / 4;
+  CONSTANT tech_jesd204b_field_rx_err_enable_reset      : INTEGER := 16#17F9FE#;
+  CONSTANT tech_jesd204b_field_rx_err_link_reinit_adr   : NATURAL := 16#78# / 4;
+  CONSTANT tech_jesd204b_field_rx_err_link_reinit_reset : INTEGER := 16#3902#;
+
+  CONSTANT tech_jesd204b_field_csr_rbd_count_adr : NATURAL := 16#80# / 4;
   CONSTANT tech_jesd204b_field_csr_rbd_count_w   : NATURAL := 8;
   CONSTANT tech_jesd204b_field_csr_rbd_count_lo  : NATURAL := 3;
   CONSTANT tech_jesd204b_field_csr_rbd_count_hi  : NATURAL := tech_jesd204b_field_csr_rbd_count_w-1 + tech_jesd204b_field_csr_rbd_count_lo;
-  CONSTANT tech_jesd204b_field_csr_dev_syncn_adr : NATURAL := 16#80#;
+  CONSTANT tech_jesd204b_field_csr_dev_syncn_adr : NATURAL := 16#80# / 4;
   CONSTANT tech_jesd204b_field_csr_dev_syncn_w   : NATURAL := 1;
   CONSTANT tech_jesd204b_field_csr_dev_syncn_lo  : NATURAL := 0;
   CONSTANT tech_jesd204b_field_csr_dev_syncn_hi  : NATURAL := tech_jesd204b_field_csr_dev_syncn_w-1 + tech_jesd204b_field_csr_dev_syncn_lo;