block/RTC_I2C:
  description: Low-power I2C (Inter-Integrated Circuit) Controller.
  items:
  - name: SCL_LOW_PERIOD
    byte_offset: 0
    fieldset: SCL_LOW_PERIOD
  - name: CTRL
    byte_offset: 4
    fieldset: CTRL
  - name: DEBUG_STATUS
    byte_offset: 8
    fieldset: DEBUG_STATUS
  - name: TIMEOUT
    byte_offset: 12
    fieldset: TIMEOUT
  - name: SLAVE_ADDR
    byte_offset: 16
    fieldset: SLAVE_ADDR
  - name: DATA
    byte_offset: 28
  - name: INT_RAW
    byte_offset: 32
    fieldset: INT_RAW
  - name: INT_CLR
    byte_offset: 36
    fieldset: INT_CLR
  - name: INT_EN
    byte_offset: 40
  - name: INT_ST
    byte_offset: 44
  - name: SDA_DUTY
    byte_offset: 48
    fieldset: SDA_DUTY
  - name: SCL_HIGH_PERIOD
    byte_offset: 56
    fieldset: SCL_HIGH_PERIOD
  - name: SCL_START_PERIOD
    byte_offset: 64
    fieldset: SCL_START_PERIOD
  - name: SCL_STOP_PERIOD
    byte_offset: 68
    fieldset: SCL_STOP_PERIOD
  - name: CMD
    byte_offset: 72
    fieldset: CMD
fieldset/CMD:
  fields:
  - name: VAL
    description: Command content.
    bit_offset: 0
    bit_size: 14
  - name: DONE
    description: Bit is set by HW when command is done.
    bit_offset: 31
    bit_size: 1
fieldset/CTRL:
  fields:
  - name: SDA_FORCE_OUT
    description: SDA is push-pull (1) or open-drain (0).
    bit_offset: 0
    bit_size: 1
  - name: SCL_FORCE_OUT
    description: SCL is push-pull (1) or open-drain (0).
    bit_offset: 1
    bit_size: 1
  - name: MS_MODE
    description: Master (1) or slave (0).
    bit_offset: 4
    bit_size: 1
  - name: TRANS_START
    description: Force to generate start condition.
    bit_offset: 5
    bit_size: 1
  - name: TX_LSB_FIRST
    description: Send LSB first.
    bit_offset: 6
    bit_size: 1
  - name: RX_LSB_FIRST
    description: Receive LSB first.
    bit_offset: 7
    bit_size: 1
fieldset/DEBUG_STATUS:
  fields:
  - name: ACK_VAL
    description: The value of an acknowledge signal on the bus.
    bit_offset: 0
    bit_size: 1
  - name: SLAVE_RW
    description: When working as a slave, the value of R/W bit received.
    bit_offset: 1
    bit_size: 1
  - name: TIMED_OUT
    description: Transfer has timed out.
    bit_offset: 2
    bit_size: 1
  - name: ARB_LOST
    description: When working as a master, lost control of I2C bus.
    bit_offset: 3
    bit_size: 1
  - name: BUS_BUSY
    description: operation is in progress.
    bit_offset: 4
    bit_size: 1
  - name: SLAVE_ADDR_MATCH
    description: When working as a slave, whether address was matched.
    bit_offset: 5
    bit_size: 1
  - name: BYTE_TRANS
    description: 8 bit transmit done.
    bit_offset: 6
    bit_size: 1
  - name: MAIN_STATE
    description: state of the main state machine.
    bit_offset: 25
    bit_size: 3
  - name: SCL_STATE
    description: state of SCL state machine.
    bit_offset: 28
    bit_size: 3
fieldset/INT_CLR:
  fields:
  - name: SLAVE_TRANS_COMPLETE_INT_CLR
    bit_offset: 4
    bit_size: 1
  - name: ARBITRATION_LOST_INT_CLR
    bit_offset: 5
    bit_size: 1
  - name: MASTER_TRANS_COMPLETE_INT_CLR
    bit_offset: 6
    bit_size: 1
  - name: TRANS_COMPLETE_INT_CLR
    bit_offset: 7
    bit_size: 1
  - name: TIME_OUT_INT_CLR
    bit_offset: 8
    bit_size: 1
fieldset/INT_RAW:
  fields:
  - name: SLAVE_TRANS_COMPLETE_INT_RAW
    description: Slave accepted 1 byte and address matched.
    bit_offset: 3
    bit_size: 1
  - name: ARBITRATION_LOST_INT_RAW
    description: Master lost arbitration.
    bit_offset: 4
    bit_size: 1
  - name: MASTER_TRANS_COMPLETE_INT_RAW
    bit_offset: 5
    bit_size: 1
  - name: TRANS_COMPLETE_INT_RAW
    description: Stop condition has been detected interrupt raw status.
    bit_offset: 6
    bit_size: 1
  - name: TIME_OUT_INT_RAW
    description: time out interrupt raw status.
    bit_offset: 7
    bit_size: 1
fieldset/SCL_HIGH_PERIOD:
  fields:
  - name: SCL_HIGH_PERIOD
    description: Number of FAST_CLK cycles for SCL to be high.
    bit_offset: 0
    bit_size: 20
fieldset/SCL_LOW_PERIOD:
  fields:
  - name: SCL_LOW_PERIOD
    description: number of cycles that scl == 0.
    bit_offset: 0
    bit_size: 25
fieldset/SCL_START_PERIOD:
  fields:
  - name: SCL_START_PERIOD
    description: Number of FAST_CLK cycles to wait before generating start condition.
    bit_offset: 0
    bit_size: 20
fieldset/SCL_STOP_PERIOD:
  fields:
  - name: SCL_STOP_PERIOD
    description: Number of FAST_CLK cycles to wait before generating stop condition.
    bit_offset: 0
    bit_size: 20
fieldset/SDA_DUTY:
  fields:
  - name: SDA_DUTY
    description: Number of FAST_CLK cycles SDA will switch after falling edge of SCL.
    bit_offset: 0
    bit_size: 20
fieldset/SLAVE_ADDR:
  fields:
  - name: SLAVE_ADDR
    description: local slave address.
    bit_offset: 0
    bit_size: 15
  - name: _10BIT
    description: Set if local slave address is 10-bit.
    bit_offset: 31
    bit_size: 1
fieldset/TIMEOUT:
  fields:
  - name: TIMEOUT
    description: Maximum number of FAST_CLK cycles that the transmission can take.
    bit_offset: 0
    bit_size: 20