diff --git a/data/registers/sdmmc_v1.yaml b/data/registers/sdmmc_v1.yaml
index 8841d50..0eb958f 100644
--- a/data/registers/sdmmc_v1.yaml
+++ b/data/registers/sdmmc_v1.yaml
@@ -248,6 +248,10 @@ fieldset/ICR:
       description: DATAEND flag clear bit
       bit_offset: 8
       bit_size: 1
+    - name: STBITERRC
+      description: STBITERR flag clear bit
+      bit_offset: 9
+      bit_size: 1
     - name: DBCKENDC
       description: DBCKEND flag clear bit
       bit_offset: 10
@@ -295,6 +299,10 @@ fieldset/MASKR:
       description: Data end interrupt enable
       bit_offset: 8
       bit_size: 1
+    - name: STBITERRE
+      description: STBITERR interrupt enable
+      bit_offset: 9
+      bit_size: 1
     - name: DBCKENDIE
       description: Data block end interrupt enable
       bit_offset: 10
@@ -428,6 +436,10 @@ fieldset/STAR:
       description: "Data end (data counter, SDIDCOUNT, is zero)"
       bit_offset: 8
       bit_size: 1
+    - name: STBITERR
+      description: " Start bit not detected on all data signals in wide bus mode"
+      bit_offset: 9
+      bit_size: 1
     - name: DBCKEND
       description: Data block sent/received (CRC check passed)
       bit_offset: 10