block/CRC:
  description: Cyclic Redundancy Check calculation unit
  items:
  - name: DR32
    description: Data register
    byte_offset: 0
  - name: DR16
    description: Data register - half-word sized
    byte_offset: 0
    bit_size: 16
  - name: DR8
    description: Data register - byte sized
    byte_offset: 0
    bit_size: 8
  - name: IDR
    description: Independent Data register
    byte_offset: 4
  - name: CR
    description: Control register
    byte_offset: 8
    fieldset: CR
  - name: INIT
    description: Initial CRC value
    byte_offset: 16
  - name: POL
    description: CRC polynomial
    byte_offset: 20
fieldset/CR:
  description: Control register
  fields:
  - name: RESET
    description: RESET bit
    bit_offset: 0
    bit_size: 1
  - name: POLYSIZE
    description: Polynomial size
    bit_offset: 3
    bit_size: 2
    enum: POLYSIZE
  - name: REV_IN
    description: Reverse input data
    bit_offset: 5
    bit_size: 2
    enum: REV_IN
  - name: REV_OUT
    description: Reverse output data
    bit_offset: 7
    bit_size: 1
    enum: REV_OUT
enum/POLYSIZE:
  bit_size: 2
  variants:
  - name: Polysize32
    description: 32-bit polynomial
    value: 0
  - name: Polysize16
    description: 16-bit polynomial
    value: 1
  - name: Polysize8
    description: 8-bit polynomial
    value: 2
  - name: Polysize7
    description: 7-bit polynomial
    value: 3
enum/REV_IN:
  bit_size: 2
  variants:
  - name: Normal
    description: Bit order not affected
    value: 0
  - name: Byte
    description: Bit reversal done by byte
    value: 1
  - name: HalfWord
    description: Bit reversal done by half-word
    value: 2
  - name: Word
    description: Bit reversal done by word
    value: 3
enum/REV_OUT:
  bit_size: 1
  variants:
  - name: Normal
    description: Bit order not affected
    value: 0
  - name: Reversed
    description: Bit reversed output
    value: 1