block/DS:
  description: Digital Signature.
  items:
  - name: Y_MEM
    description: memory that stores Y.
    array:
      len: 128
      stride: 4
    byte_offset: 0
  - name: M_MEM
    description: memory that stores M.
    array:
      len: 128
      stride: 4
    byte_offset: 512
  - name: RB_MEM
    description: memory that stores Rb.
    array:
      len: 128
      stride: 4
    byte_offset: 1024
  - name: BOX_MEM
    description: memory that stores BOX.
    array:
      len: 12
      stride: 4
    byte_offset: 1536
  - name: X_MEM
    description: memory that stores X.
    array:
      len: 128
      stride: 4
    byte_offset: 2048
  - name: Z_MEM
    description: memory that stores Z.
    array:
      len: 128
      stride: 4
    byte_offset: 2560
  - name: SET_START
    description: DS start control register.
    byte_offset: 3584
    fieldset: SET_START
  - name: SET_CONTINUE
    description: DS continue control register.
    byte_offset: 3588
    fieldset: SET_CONTINUE
  - name: SET_FINISH
    description: DS finish control register.
    byte_offset: 3592
    fieldset: SET_FINISH
  - name: QUERY_BUSY
    description: DS query busy register.
    byte_offset: 3596
    fieldset: QUERY_BUSY
  - name: QUERY_KEY_WRONG
    description: DS query key-wrong counter register.
    byte_offset: 3600
    fieldset: QUERY_KEY_WRONG
  - name: QUERY_CHECK
    description: DS query check result register.
    byte_offset: 3604
    fieldset: QUERY_CHECK
  - name: DATE
    description: DS version control register.
    byte_offset: 3616
    fieldset: DATE
fieldset/DATE:
  description: DS version control register.
  fields:
  - name: DATE
    description: ds version information.
    bit_offset: 0
    bit_size: 30
fieldset/QUERY_BUSY:
  description: DS query busy register.
  fields:
  - name: QUERY_BUSY
    description: 'digital signature state. 1''b0: idle, 1''b1: busy.'
    bit_offset: 0
    bit_size: 1
fieldset/QUERY_CHECK:
  description: DS query check result register.
  fields:
  - name: MD_ERROR
    description: 'MD checkout result. 1''b0: MD check pass, 1''b1: MD check fail.'
    bit_offset: 0
    bit_size: 1
  - name: PADDING_BAD
    description: 'padding checkout result. 1''b0: a good padding, 1''b1: a bad padding.'
    bit_offset: 1
    bit_size: 1
fieldset/QUERY_KEY_WRONG:
  description: DS query key-wrong counter register.
  fields:
  - name: QUERY_KEY_WRONG
    description: digital signature key wrong counter.
    bit_offset: 0
    bit_size: 4
fieldset/SET_CONTINUE:
  description: DS continue control register.
  fields:
  - name: SET_CONTINUE
    description: set this bit to continue DS operation.
    bit_offset: 0
    bit_size: 1
fieldset/SET_FINISH:
  description: DS finish control register.
  fields:
  - name: SET_FINISH
    description: Set this bit to finish DS process.
    bit_offset: 0
    bit_size: 1
fieldset/SET_START:
  description: DS start control register.
  fields:
  - name: SET_START
    description: set this bit to start DS operation.
    bit_offset: 0
    bit_size: 1