<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE register_page SYSTEM "registers.dtd">
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<?xml-stylesheet href="one_register.xsl" type="text/xsl" ?>







<register_page>
  <registers>
  
    <register is_register="True" is_internal="False" is_stub_entry="False">
      <reg_short_name>ERR&lt;n&gt;PFGCDN</reg_short_name>
        
        <reg_long_name>Error Record &lt;n&gt; Pseudo-fault Generation Countdown Register</reg_long_name>



      
            <reg_condition otherwise="RES0">when error record n is implemented, the node that owns error record n implements the Common Fault Injection Model Extension, and error record n is the first error record in the node</reg_condition>
          <reg_array>
              <reg_array_start>0</reg_array_start>
              <reg_array_end>65534</reg_array_end>
         </reg_array>
      

    
  <reg_address
      external_access="False"
    mem_map_access="True"
      power_domain="None"
  >
    <reg_component>RAS</reg_component>
    <reg_offset><hexnumber>0x810</hexnumber> + (64 * n)</reg_offset>
    <reg_instance>ERR&lt;n&gt;PFGCDN</reg_instance>
    <reg_access>
      
        
      <reg_access_state>
          <reg_access_type>RW</reg_access_type>
      </reg_access_state>
    </reg_access>
</reg_address>



          <reg_reset_value></reg_reset_value>

      <reg_mappings>
        




      </reg_mappings>

        <reg_purpose>
          
    
      <purpose_text>
        <para>Generates one of the errors enabled in the corresponding <register_link state="ext" id="ext-errnpfgctl.xml">ERR&lt;n&gt;PFGCTL</register_link> register.</para>
      </purpose_text>

        </reg_purpose>

      <reg_groups>
          <reg_group>RAS</reg_group>
      </reg_groups>
      <reg_configuration>
        
    
      <configuration_text>
        <para><register_link state="ext" id="ext-errnfr.xml">ERR&lt;n&gt;FR</register_link> describes the features implemented by the node.</para>
      </configuration_text>

      </reg_configuration>
      
      
        
      <reg_attributes>
          
    
      <attributes_text>
        <para>ERR&lt;n&gt;PFGCDN is a 64-bit register.</para>
      </attributes_text>

      </reg_attributes>
      <reg_fieldsets>
        






<fields id="fieldset_0" length="64">
  <text_before_fields/>
  <field id="fieldset_0-63_32" has_partial_fieldset="False" is_linked_to_partial_fieldset="False" is_access_restriction_possible="False" is_variable_length="False" is_constant_value="False" is_partial_field="False" is_conditional_field_name="False" rwtype="RES0">
    <field_msb>63</field_msb>
    <field_lsb>32</field_lsb>
    <rel_range>63:32</rel_range>
    <field_description order="before"/>
    <field_description order="before">
      <para>Reserved, <arm-defined-word>RES0</arm-defined-word>.</para>
    </field_description>
  </field>
  <field id="fieldset_0-31_0" has_partial_fieldset="False" is_linked_to_partial_fieldset="False" is_access_restriction_possible="False" is_variable_length="False" is_constant_value="False" is_partial_field="False" is_conditional_field_name="False">
    <field_name>CDN</field_name>
    <field_msb>31</field_msb>
    <field_lsb>0</field_lsb>
    <rel_range>31:0</rel_range>
    <field_description order="before"><para>Countdown value.</para>
<para>This field is copied to Error Generation Counter when either:</para>
<list type="unordered">
<listitem><content>Software writes 1 to <register_link state="ext" id="ext-errnpfgctl.xml">ERR&lt;n&gt;PFGCTL</register_link>.CDNEN.</content>
</listitem><listitem><content>The Error Generation Counter decrements to zero and <register_link state="ext" id="ext-errnpfgctl.xml">ERR&lt;n&gt;PFGCTL</register_link>.R is 1.</content>
</listitem></list>
<para>While <register_link state="ext" id="ext-errnpfgctl.xml">ERR&lt;n&gt;PFGCTL</register_link>.CDNEN is 1 and the Error Generation Counter is nonzero, the counter decrements by 1 for each cycle at an <arm-defined-word>IMPLEMENTATION DEFINED</arm-defined-word> clock rate. When the counter reaches zero, one of the errors enabled in the <register_link state="ext" id="ext-errnpfgctl.xml">ERR&lt;n&gt;PFGCTL</register_link> register is generated.</para></field_description>
    <field_description order="after">
      <note>
        <para>The current Error Generation Counter value is not visible to software.</para>
      </note>
    </field_description>
    <field_resets>
      <field_reset reset_type="Cold">
        <field_reset_standard_text>AU</field_reset_standard_text>
      </field_reset>
    </field_resets>
  </field>
  <text_after_fields/>
</fields>




<reg_fieldset length="64">
  <fieldat id="fieldset_0-63_32" msb="63" lsb="32"/>
  <fieldat id="fieldset_0-31_0" msb="31" lsb="0"/>
</reg_fieldset>


      </reg_fieldsets>
        <reg_variables>
              <reg_variable variable="n" max="65534"/>
        </reg_variables>

      <access_mechanisms>
          


  
    
      <access_permission_text>
        <para>This section shows the offset of ERR&lt;n&gt;PFGCDN in an error record group when FEAT_RASSA_4KB_GRP is implemented.
If FEAT_RASSA_16KB_GRP or FEAT_RASSA_64KB_GRP is implemented, or ERR&lt;n&gt;PFGCDN is accessed in a fault injection group, see <xref filename="RAS_memory-mapped_register_views.md" linkend="RAS_registers_view">'RAS memory-mapped register views'</xref> for the offset of ERR&lt;n&gt;PFGCDN.</para>
      </access_permission_text>





    

      </access_mechanisms>

      <arch_variants>
      </arch_variants>
  </register>
</registers>
<timestamp>2026-03-26 20:27:25</timestamp>
<commit_id>2026-03_rel</commit_id>
</register_page>