block/SystemControl:
  description: System Control Block.
  items:
  - name: ACTLR
    description: Auxiliary Control Register,.
    byte_offset: 8
    access: Read
  - name: CPUID
    description: CPUID Base Register.
    byte_offset: 3328
    access: Read
    fieldset: CPUID
  - name: ICSR
    description: Interrupt Control and State Register.
    byte_offset: 3332
    fieldset: ICSR
  - name: VTOR
    description: Vector Table Offset Register.
    byte_offset: 3336
    fieldset: VTOR
  - name: AIRCR
    description: Application Interrupt and Reset Control Register.
    byte_offset: 3340
    fieldset: AIRCR
  - name: SCR
    description: System Control Register.
    byte_offset: 3344
    fieldset: SCR
  - name: CCR
    description: Configuration and Control Register.
    byte_offset: 3348
    access: Read
    fieldset: CCR
  - name: SHPR2
    description: System Handler Priority Register 2.
    byte_offset: 3356
    fieldset: SHPR2
  - name: SHPR3
    description: System Handler Priority Register 3.
    byte_offset: 3360
    fieldset: SHPR3
  - name: SHCSR
    description: System Handler Control and State Register.
    byte_offset: 3364
    fieldset: SHCSR
  - name: DFSR
    description: Debug Fault Status Register.
    byte_offset: 3376
    fieldset: DFSR
fieldset/AIRCR:
  description: Application Interrupt and Reset Control Register.
  fields:
  - name: VECTCLRACTIVE
    description: Reserved for Debug use.
    bit_offset: 1
    bit_size: 1
  - name: SYSRESETREQ
    description: System reset request.
    bit_offset: 2
    bit_size: 1
    enum: SYSRESETREQ
  - name: ENDIANNESS
    description: Data endianness bit.
    bit_offset: 15
    bit_size: 1
    enum: ENDIANNESS
  - name: VECTKEY
    description: Register key.
    bit_offset: 16
    bit_size: 16
fieldset/CCR:
  description: Configuration and Control Register.
  fields:
  - name: UNALIGN_TRP
    description: Always reads as one, indicates that all unaligned accesses generate a HardFault.
    bit_offset: 3
    bit_size: 1
  - name: STKALIGN
    description: Indicates stack alignment on exception entry.
    bit_offset: 9
    bit_size: 1
fieldset/CPUID:
  description: CPUID Base Register.
  fields:
  - name: REVISION
    description: Minor revision number m in the rnpm revision status.
    bit_offset: 0
    bit_size: 4
  - name: PARTNO
    description: Indicates part number.
    bit_offset: 4
    bit_size: 12
  - name: ARCHITECTURE
    description: Indicates the architecture.
    bit_offset: 16
    bit_size: 4
  - name: VARIANT
    description: Major revision number n in the npm revision status.
    bit_offset: 20
    bit_size: 4
  - name: IMPLEMENTER
    description: Implementer code.
    bit_offset: 24
    bit_size: 8
fieldset/DFSR:
  description: Debug Fault Status Register.
  fields:
  - name: HALTED
    description: no description available.
    bit_offset: 0
    bit_size: 1
    enum: HALTED
  - name: BKPT
    description: no description available.
    bit_offset: 1
    bit_size: 1
    enum: BKPT
  - name: DWTTRAP
    description: no description available.
    bit_offset: 2
    bit_size: 1
    enum: DWTTRAP
  - name: VCATCH
    description: no description available.
    bit_offset: 3
    bit_size: 1
    enum: VCATCH
  - name: EXTERNAL
    description: no description available.
    bit_offset: 4
    bit_size: 1
    enum: EXTERNAL
fieldset/ICSR:
  description: Interrupt Control and State Register.
  fields:
  - name: VECTPENDING
    description: Exception number of the highest priority pending enabled exception.
    bit_offset: 12
    bit_size: 6
  - name: PENDSTCLR
    description: SysTick exception clear-pending bit.
    bit_offset: 25
    bit_size: 1
    enum: PENDSTCLR
  - name: PENDSTSET
    description: SysTick exception set-pending bit.
    bit_offset: 26
    bit_size: 1
    enum: PENDSTSET
  - name: PENDSVCLR
    description: PendSV clear-pending bit.
    bit_offset: 27
    bit_size: 1
    enum: PENDSVCLR
  - name: PENDSVSET
    description: PendSV set-pending bit.
    bit_offset: 28
    bit_size: 1
    enum: PENDSVSET
  - name: NMIPENDSET
    description: NMI set-pending bit.
    bit_offset: 31
    bit_size: 1
    enum: NMIPENDSET
fieldset/SCR:
  description: System Control Register.
  fields:
  - name: SLEEPONEXIT
    description: Indicates sleep-on-exit when returning from Handler mode to Thread mode.
    bit_offset: 1
    bit_size: 1
    enum: SLEEPONEXIT
  - name: SLEEPDEEP
    description: Controls whether the processor uses sleep or deep sleep as its low power mode.
    bit_offset: 2
    bit_size: 1
    enum: SLEEPDEEP
  - name: SEVONPEND
    description: Send Event on Pending bit.
    bit_offset: 4
    bit_size: 1
    enum: SEVONPEND
fieldset/SHCSR:
  description: System Handler Control and State Register.
  fields:
  - name: SVCALLPENDED
    description: no description available.
    bit_offset: 15
    bit_size: 1
    enum: SVCALLPENDED
fieldset/SHPR2:
  description: System Handler Priority Register 2.
  fields:
  - name: PRI_11
    description: Priority of system handler 11, SVCall.
    bit_offset: 30
    bit_size: 2
fieldset/SHPR3:
  description: System Handler Priority Register 3.
  fields:
  - name: PRI_14
    description: Priority of system handler 14, PendSV.
    bit_offset: 22
    bit_size: 2
  - name: PRI_15
    description: Priority of system handler 15, SysTick exception.
    bit_offset: 30
    bit_size: 2
fieldset/VTOR:
  description: Vector Table Offset Register.
  fields:
  - name: TBLOFF
    description: Vector table base offset.
    bit_offset: 7
    bit_size: 25
enum/BKPT:
  bit_size: 1
  variants:
  - name: '0'
    description: No current breakpoint debug event.
    value: 0
  - name: '1'
    description: At least one current breakpoint debug event.
    value: 1
enum/DWTTRAP:
  bit_size: 1
  variants:
  - name: '0'
    description: No current debug events generated by the DWT.
    value: 0
  - name: '1'
    description: At least one current debug event generated by the DWT.
    value: 1
enum/ENDIANNESS:
  bit_size: 1
  variants:
  - name: '0'
    description: Little-endian.
    value: 0
  - name: '1'
    description: Big-endian.
    value: 1
enum/EXTERNAL:
  bit_size: 1
  variants:
  - name: '0'
    description: No EDBGRQ debug event.
    value: 0
  - name: '1'
    description: EDBGRQ debug event.
    value: 1
enum/HALTED:
  bit_size: 1
  variants:
  - name: '0'
    description: No active halt request debug event.
    value: 0
  - name: '1'
    description: Halt request debug event active.
    value: 1
enum/NMIPENDSET:
  bit_size: 1
  variants:
  - name: '0'
    description: 'write: no effect; read: NMI exception is not pending.'
    value: 0
  - name: '1'
    description: 'write: changes NMI exception state to pending; read: NMI exception is pending.'
    value: 1
enum/PENDSTCLR:
  bit_size: 1
  variants:
  - name: '0'
    description: no effect.
    value: 0
  - name: '1'
    description: removes the pending state from the SysTick exception.
    value: 1
enum/PENDSTSET:
  bit_size: 1
  variants:
  - name: '0'
    description: 'write: no effect; read: SysTick exception is not pending.'
    value: 0
  - name: '1'
    description: 'write: changes SysTick exception state to pending; read: SysTick exception is pending.'
    value: 1
enum/PENDSVCLR:
  bit_size: 1
  variants:
  - name: '0'
    description: no effect.
    value: 0
  - name: '1'
    description: removes the pending state from the PendSV exception.
    value: 1
enum/PENDSVSET:
  bit_size: 1
  variants:
  - name: '0'
    description: 'write: no effect; read: PendSV exception is not pending.'
    value: 0
  - name: '1'
    description: 'write: changes PendSV exception state to pending; read: PendSV exception is pending.'
    value: 1
enum/SEVONPEND:
  bit_size: 1
  variants:
  - name: '0'
    description: only enabled interrupts or events can wakeup the processor, disabled interrupts are excluded.
    value: 0
  - name: '1'
    description: enabled events and all interrupts, including disabled interrupts, can wakeup the processor.
    value: 1
enum/SLEEPDEEP:
  bit_size: 1
  variants:
  - name: '0'
    description: sleep.
    value: 0
  - name: '1'
    description: deep sleep.
    value: 1
enum/SLEEPONEXIT:
  bit_size: 1
  variants:
  - name: '0'
    description: do not sleep when returning to Thread mode.
    value: 0
  - name: '1'
    description: enter sleep, or deep sleep, on return from an ISR.
    value: 1
enum/SVCALLPENDED:
  bit_size: 1
  variants:
  - name: '0'
    description: exception is not pending.
    value: 0
  - name: '1'
    description: exception is pending.
    value: 1
enum/SYSRESETREQ:
  bit_size: 1
  variants:
  - name: '0'
    description: no system reset request.
    value: 0
  - name: '1'
    description: asserts a signal to the outer system that requests a reset.
    value: 1
enum/VCATCH:
  bit_size: 1
  variants:
  - name: '0'
    description: No Vector catch triggered.
    value: 0
  - name: '1'
    description: Vector catch triggered.
    value: 1