米6体育平台手机版

SWCU193A April 2023 – August 2024 CC2340R2 , CC2340R5 , CC2340R5-Q1

1
Read This First
1. About This Manual
2. Devices
3. Register, Field, and Bit Calls
4. Related Documentation
5. Trademarks
1 Architectural Overview
1. 1.1 Target Applications
2. 1.2 Introduction
3. 1.3 Arm Cortex M0+
4. 1.4 On-Chip Memory
5. 1.5 Power Supply System
6. 1.6 Radio
7. 1.7 AES 128-bit Cryptographic Accelerator
8. 1.8 System Timer (SYSTIM)
9. 1.9 General Purpose Timers (LGPT)
10. 1.10 Always-ON (AON) or Ultra-Low Leakage (ULL) Domain
11. 1.11 Direct Memory Access
12. 1.12 System Control and Clock
13. 1.13 Communication Peripherals
14. 1.14 Programmable I/Os
15. 1.15 Serial Wire Debug (SWD)
2 Arm Cortex-M0+ Processor
1. 2.1 Introduction
2. 2.2 Block Diagram
3. 2.3 Overview
4. 2.4 Registers
3 Memory Map
1. 3.1 Memory Map
4 Interrupts and Events
1. 4.1 Exception Model
2. 4.2 Fault Handling
  1. 4.2.1 Lockup
3. 4.3 Event Fabric
4. 4.4 Digital Test Bus (DTB)
5. 4.5 EVTULL Registers
6. 4.6 EVTSVT Registers
5 Debug Subsystem
1. 5.1 Introduction
2. 5.2 Block Diagram
3. 5.3 Overview
  1. 5.3.1 Physical Interface
  2. 5.3.2 Debug Access Ports
4. 5.4 Debug Features
5. 5.5 Behavior in Low Power Modes
6. 5.6 Restricting Debug Access
7. 5.7 Mailbox (DSSM)
8. 5.8 Mailbox Events
  1. 5.8.1 CPU Interrupt Event (AON_DBG_COMB)
9. 5.9 Software Considerations
10. 5.10 DBGSS Registers
6 Power, Reset, and Clocking
1. 6.1 Introduction
2. 6.2 System CPU Modes
3. 6.3 Supply System
  1. 6.3.1 Internal DC/DC Converter and Global LDO
4. 6.4 Power States
5. 6.5 Digital Power Partitioning
6. 6.6 Clocks
  1. 6.6.1 CLKSVT
  2. 6.6.2 CLKULL
7. 6.7 Resets
  1. 6.7.1 Watchdog Timer (WDT)
  2. 6.7.2 LF Loss Detection
8. 6.8 AON (REG3V3) Register Bank
9. 6.9 CKMD Registers
10. 6.10 CLKCTL Registers
11. 6.11 PMCTL Registers
7 Internal Memory
1. 7.1 SRAM
2. 7.2 VIMS
3. 7.3 VIMS Registers
4. 7.4 FLASH Registers
8 Device Boot and Bootloader
1. 8.1 Device Boot and Programming
2. 8.2 Flash Programming
3. 8.3 Device Management Command Interface
  1. 8.3.1 SACI Communication Protocol
  2. 8.3.2 SACI Commands
4. 8.4 Bootloader Support
5. 8.5 ROM Serial Bootloader
9 Device Configuration
1. 9.1 Factory Configuration (FCFG)
2. 9.2 Customer Configuration (CCFG)
10General Purpose Timers (LGPT)
1. 10.1 Overview
2. 10.2 Block Diagram
3. 10.3 Functional Description
4. 10.4 Timer Modes
5. 10.5 LGPT0 Registers
6. 10.6 LGPT1 Registers
7. 10.7 LGPT2 Registers
8. 10.8 LGPT3 Registers
11System Timer (SYSTIM)
1. 11.1 Overview
2. 11.2 Block Diagram
3. 11.3 Functional Description
  1. 11.3.1 Common Channel Features
  2. 11.3.2 Interrupts and Events
4. 11.4 SYSTIM Registers
12Real Time Clock (RTC)
1. 12.1 Introduction
2. 12.2 Block Diagram
3. 12.3 Interrupts and Events
4. 12.4 Capture and Compare Configuration
  1. 12.4.1 Capture
  2. 12.4.2 Compare
5. 12.5 RTC Registers
13Low Power Comparator and SYS0
1. 13.1 Introduction
2. 13.2 Block Diagram
3. 13.3 Functional Description
4. 13.4 SYS0 Registers
14Battery Monitor, Temperature Sensor, and DCDC Controller (PMUD)
1. 14.1 Introduction
2. 14.2 Functional Description
  1. 14.2.1 BATMON
  2. 14.2.2 DCDC
3. 14.3 PMUD Registers
15Micro Direct Memory Access (µDMA)
1. 15.1 Introduction
2. 15.2 Block Diagram
3. 15.3 Functional Description
4. 15.4 DMA Registers
16Advanced Encryption Standard (AES)
1. 16.1 Introduction
  1. 16.1.1 AES Performance
2. 16.2 Functional Description
3. 16.3 Encryption and Decryption Configuration
4. 16.4 AES Registers
17Analog to Digital Converter (ADC)
1. 17.1 Overview
2. 17.2 Block Diagram
3. 17.3 Functional Description
4. 17.4 Advanced Features
5. 17.5 ADC Registers
18I/O Controller (IOC)
1. 18.1 Introduction
2. 18.2 Block Diagram
3. 18.3 I/O Mapping and Configuration
4. 18.4 Edge Detection
5. 18.5 GPIO
6. 18.6 I/O Pins
7. 18.7 Unused Pins
8. 18.8 Debug Configuration
9. 18.9 IOC Registers
10. 18.10 GPIO Registers
19Universal Asynchronous Receiver/Transmitter (UART)
1. 19.1 Introduction
2. 19.2 Block Diagram
3. 19.3 Functional Description
4. 19.4 Interface to µDMA
5. 19.5 Initialization and Configuration
6. 19.6 UART Registers
20Serial Peripheral Interface (SPI)
1. 20.1 Overview
  1. 20.1.1 Features
  2. 20.1.2 Block Diagram
2. 20.2 Signal Description
3. 20.3 Functional Description
4. 20.4 µDMA Operation
5. 20.5 Initialization and Configuration
6. 20.6 SPI Registers
21Inter-Integrated Circuit (I2C)
1. 21.1 Introduction
2. 21.2 Block Diagram
3. 21.3 Functional Description
4. 21.4 Initialization and Configuration
5. 21.5 I2C Registers
22Radio
1. 22.1 Introduction
2. 22.2 Block Diagram
3. 22.3 Overview
4. 22.4 Radio Usage Model
  1. 22.4.1 CRC and Whitening
5. 22.5 LRFDDBELL Registers
6. 22.6 LRFDRXF Registers
7. 22.7 LRFDTXF Registers
23Revision History

4.1.5 Exception Priorities

All exceptions have an associated priority, with a lower priority value indicating a higher priority. All exceptions have configurable priorities except Reset, Hardfault, and NMI.

Configurable priority values are in the range 0-192, in steps of 64. The Reset, HardFault, and NMI exceptions, with fixed negative priority values, always have higher priority than any other exception.

Assigning a higher priority value to IRQ[0] and a lower priority value to IRQ[1] means that IRQ[1] has higher priority than IRQ[0]. If both IRQ[1] and IRQ[0] are asserted, IRQ[1] is processed before IRQ[0].

If multiple pending exceptions have the same priority, the pending exception with the lowest exception number takes precedence. For example, if both IRQ[0] and IRQ[1] are pending and have the same priority, then IRQ[0] is processed before IRQ[1].

When the processor is executing an exception handler, the exception handler is preempted if a higher priority exception occurs. If an exception occurs with the same priority as the exception being handled, the handler is not preempted, irrespective of the exception number. However, the status of the new interrupt changes to pending.