block/VREFBUF:
  description: VREFBUF.
  items:
  - name: CSR
    description: VREFBUF control and status register.
    byte_offset: 0
    fieldset: CSR
  - name: CCR
    description: VREFBUF calibration control register.
    byte_offset: 4
    fieldset: CCR
fieldset/CCR:
  description: VREFBUF calibration control register.
  fields:
  - name: TRIM
    description: TRIM.
    bit_offset: 0
    bit_size: 6
fieldset/CSR:
  description: VREFBUF control and status register.
  fields:
  - name: ENVR
    description: ENVR.
    bit_offset: 0
    bit_size: 1
  - name: HIZ
    description: HIZ.
    bit_offset: 1
    bit_size: 1
  - name: VRR
    description: VRR.
    bit_offset: 3
    bit_size: 1
  - name: VRS
    description: VRS.
    bit_offset: 4
    bit_size: 3