Datasheet
Table Of Contents
- RP2040 Datasheet
- Colophon
- Chapter 1. Introduction
- Chapter 2. System Description
- 2.1. Bus Fabric
- 2.2. Address Map
- 2.3. Processor subsystem
- 2.4. Cortex-M0+
- 2.5. DMA
- 2.6. Memory
- 2.7. Boot Sequence
- 2.8. Bootrom
- 2.9. Power Supplies
- 2.10. Core Supply Regulator
- 2.11. Power Control
- 2.12. Chip-Level Reset
- 2.13. Power-On State Machine
- 2.14. Subsystem Resets
- 2.15. Clocks
- 2.16. Crystal Oscillator (XOSC)
- 2.17. Ring Oscillator (ROSC)
- 2.18. PLL
- 2.19. GPIO
- 2.20. Sysinfo
- 2.21. Syscfg
- 2.22. TBMAN
- Chapter 3. PIO
- Chapter 4. Peripherals
- 4.1. USB
- 4.2. UART
- 4.3. I2C
- 4.3.1. Features
- 4.3.2. IP Configuration
- 4.3.3. I2C Overview
- 4.3.4. I2C Terminology
- 4.3.5. I2C Behaviour
- 4.3.6. I2C Protocols
- 4.3.7. Tx FIFO Management and START, STOP and RESTART Generation
- 4.3.8. Multiple Master Arbitration
- 4.3.9. Clock Synchronization
- 4.3.10. Operation Modes
- 4.3.11. Spike Suppression
- 4.3.12. Fast Mode Plus Operation
- 4.3.13. Bus Clear Feature
- 4.3.14. IC_CLK Frequency Configuration
- 4.3.15. DMA Controller Interface
- 4.3.16. Operation of Interrupt Registers
- 4.3.17. List of Registers
- 4.4. SPI
- 4.5. PWM
- 4.6. Timer
- 4.7. Watchdog
- 4.8. RTC
- 4.9. ADC and Temperature Sensor
- 4.10. SSI
- 4.10.1. Overview
- 4.10.2. Features
- 4.10.3. IP Modifications
- 4.10.4. Clock Ratios
- 4.10.5. Transmit and Receive FIFO Buffers
- 4.10.6. 32-Bit Frame Size Support
- 4.10.7. SSI Interrupts
- 4.10.8. Transfer Modes
- 4.10.9. Operation Modes
- 4.10.10. Partner Connection Interfaces
- 4.10.11. DMA Controller Interface
- 4.10.12. APB Interface
- 4.10.13. List of Registers
- Chapter 5. Electrical and Mechanical
- Appendix A: Register Field Types
- Appendix B: Errata
- Appendix C: Documentation Release History
Description
Bus fabric performance counter 0
Table 7. PERFCTR0
Register
Bits Description Type Reset
31:24 Reserved. - -
23:0 Busfabric saturating performance counter 0
Count some event signal from the busfabric arbiters.
Write any value to clear. Select an event to count using PERFSEL0
WC 0x000000
BUSCTRL: PERFSEL0 Register
Offset: 0x0c
Description
Bus fabric performance event select for PERFCTR0
Table 8. PERFSEL0
Register
Bits Description Type Reset
31:5 Reserved. - -
4:0 Select an event for PERFCTR0. Count either contested accesses, or all
accesses, on a downstream port of the main crossbar.
0x00 → apb_contested
0x01 → apb
0x02 → fastperi_contested
0x03 → fastperi
0x04 → sram5_contested
0x05 → sram5
0x06 → sram4_contested
0x07 → sram4
0x08 → sram3_contested
0x09 → sram3
0x0a → sram2_contested
0x0b → sram2
0x0c → sram1_contested
0x0d → sram1
0x0e → sram0_contested
0x0f → sram0
0x10 → xip_main_contested
0x11 → xip_main
0x12 → rom_contested
0x13 → rom
RW 0x1f
BUSCTRL: PERFCTR1 Register
Offset: 0x10
Description
Bus fabric performance counter 1
RP2040 Datasheet
2.1. Bus Fabric 21