diff --git a/data/registers/timer_l0.yaml b/data/registers/timer_l0.yaml
index 333c404..b795a7f 100644
--- a/data/registers/timer_l0.yaml
+++ b/data/registers/timer_l0.yaml
@@ -142,7 +142,7 @@ block/TIM_CORE:
   - name: PSC
     description: prescaler
     byte_offset: 40
-    fieldset: PSC_CORE
+    bit_size: 16
   - name: ARR
     description: auto-reload register
     byte_offset: 44
@@ -667,13 +667,6 @@ fieldset/EGR_GP16:
     description: Trigger generation
     bit_offset: 6
     bit_size: 1
-fieldset/PSC_CORE:
-  description: prescaler
-  fields:
-  - name: PSC
-    description: Prescaler value
-    bit_offset: 0
-    bit_size: 16
 fieldset/SMCR_2CH:
   description: slave mode control register
   fields:
diff --git a/data/registers/timer_v1.yaml b/data/registers/timer_v1.yaml
index 96c208e..e8cd3a3 100644
--- a/data/registers/timer_v1.yaml
+++ b/data/registers/timer_v1.yaml
@@ -350,7 +350,7 @@ block/TIM_CORE:
   - name: PSC
     description: prescaler
     byte_offset: 40
-    fieldset: PSC_CORE
+    bit_size: 16
   - name: ARR
     description: auto-reload register
     byte_offset: 44
@@ -1341,13 +1341,6 @@ fieldset/EGR_GP16:
     description: Trigger generation
     bit_offset: 6
     bit_size: 1
-fieldset/PSC_CORE:
-  description: prescaler
-  fields:
-  - name: PSC
-    description: Prescaler value
-    bit_offset: 0
-    bit_size: 16
 fieldset/RCR_1CH_CMP:
   description: repetition counter register
   fields:
diff --git a/data/registers/timer_v2.yaml b/data/registers/timer_v2.yaml
index d78f891..b3cfab0 100644
--- a/data/registers/timer_v2.yaml
+++ b/data/registers/timer_v2.yaml
@@ -368,7 +368,7 @@ block/TIM_CORE:
   - name: PSC
     description: prescaler
     byte_offset: 40
-    fieldset: PSC_CORE
+    bit_size: 16
   - name: ARR
     description: auto-reload register (Dither mode disabled)
     byte_offset: 44
@@ -1586,13 +1586,6 @@ fieldset/EGR_GP16:
     description: Trigger generation
     bit_offset: 6
     bit_size: 1
-fieldset/PSC_CORE:
-  description: prescaler
-  fields:
-  - name: PSC
-    description: Prescaler value
-    bit_offset: 0
-    bit_size: 16
 fieldset/RCR_1CH_CMP:
   description: repetition counter register
   fields: