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Freescale Semiconductor MCF52210, MCF52211, MCF52212, MCF52213 Chapter 7 Backup Watchdog Timer (BWT) Module

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MCF52211 ColdFire® Integrated Microcontroller Reference Manual, Rev. 2

Freescale Semiconductor 7-1

Chapter 7 Backup Watchdog Timer (BWT) Module

7.1 Introduction

The Backup Watchdog Timer (BWT) module is used to help software recover from runaway code. This

section presents the modes of operation, register information, and functional description of the BWT. A

block diagram of the BWT is shown in Figure 7-1.

Figure 7-1. Backup Watchdog Timer Block Diagram

7.1.1 Overview

The BWT is a 16-bit timer that is usef ul in helping software to recover from runaway code. It incorporates

a free-running down-counter that generates a warm reset on underflow. To prevent a reset, software must

periodically restart the countdown by writing a special set of values to a register in the BWT. This periodic

writing process is referred to as servicing the BWT.

The clock source for the BWT can come from the relaxation oscillator or the system clock (see

Section 6.7.1.10, “Backup Watchdog Timer Control Register (BWCR)”).

7.1.2 Modes of Operation

This section describes the operation of the BWT in low-power modes of operation. These modes are

described in Chapter 8, “Power Management”.

16-bit WMR

16-bit Watchdog Counter

Count = 0

BWT Divide by Reset

Clock

IPBUS

4096

16-bit WCNTR 16-bit WSR

IPBUS

Load Counter

WAIT

DOZE

HALTED

Source

Contents

Main How to Reach Us: Chapter 1 Overview Chapter 2 Signal Descriptions Chapter 3 ColdFire Core Chapter 4 Multiply-Accumulate Unit (MAC) Chapter 5 Static RAM (SRAM) Chapter 6 Clock Module Chapter 7 Backup Watchdog Timer (BWT) Module Chapter 8 Power Management Chapter 9 Chip Configuration Module (CCM) Chapter 10 Reset Controller Module Chapter 11 Real-Time Clock Chapter 12 System Control Module (SCM) Chapter 13 General Purpose I/O Module Chapter 14 Interrupt Controller Module Chapter 15 Universal Serial Bus, OTG Capable Controller Chapter 16 Edge Port Module (EPORT) Chapter 17 DMA Controller Module Chapter 18 ColdFire Flash Module (CFM) Chapter 19 EzPort Chapter 20 Programmable Interrupt Timers (PIT0PIT1) Chapter 21 General Purpose Timer Module (GPT) Chapter 22 DMA Timers (DTIM0DTIM3) Chapter 23 Queued Serial Peripheral Interface (QSPI) Chapter 24 UART Modules Chapter 25 I2C Interface Chapter 26 Analog-to-Digital Converter (ADC) Chapter 27 Pulse-Width Modulation (PWM) Module Chapter 28 Debug Module Chapter 29 IEEE 1149.1 Test Access Port (JTAG) Chapter 1 Overview 1.1 MCF52211 Family Configurations 1.2 Block Diagram Figure 1-1. MCF52211 Block Diagram 1.3 Part Numbers and Packaging V2 ColdFire CPU 1.2 Features Page Page Page 1.2.1 V2 Core Overview 1.2.2 Integrated Debug Module 1.2.3 JTAG 1.2.4 On-Chip Memories 1.2.4.1 SRAM 1.2.4.2 Flash Memory 1.2.5 Power Management 1.2.6 USB On-The-Go Controller 1.2.7 UARTs 1.2.8 I2C Bus 1.2.9 QSPI 1.2.10 Fast ADC 1.2.11 DMA Timers (DTIM0DTIM3) 1.2.12 General Purpose Timer (GPT) 1.2.13 Periodic Interrupt Timers (PIT0 and PIT1) 1.2.14 Real-Time Clock (RTC) 1.2.15 Pulse-Width Modulation (PWM) Timers 1.2.16 Software Watchdog Timer 1.2.17 Backup Watchdog Timer 1.2.18 Phase-Locked Loop (PLL) 1.2.19 Interrupt Controller (INTC) 1.2.20 DMA Controller 1.2.21 Reset Page Chapter 2 Signal Descriptions 2.1 Introduction 2.2 Overview Figure 2-1. Block Diagram with Signal Interfaces 2.3 Pin Functions V2 ColdFire CPU Table 2-1. Pin Functions by Primary and Alternate Purpose Page Page Page Page 2.4 Reset Signals Table 2-2 describes signals that are used to reset the chip or as a reset indication. Table 2-4 describes signals used in mode selection, Table 2-5 describes particular clocking modes. 2.5 PLL and Clock Signals Table 2-3 describes signals that are used to support the on-chip clock generation circuitry. 2.7 External Interrupt Signals Table 2-6 describes the external interrupt signals. Table 2-7 describes the QSPI signals. 2.8 Queued Serial Peripheral Interface (QSPI) Table 2-5. Clocking Modes 2.9 I2C I/O Signals Table 2-8 describes the I2C serial interface module signals. Table 2-10 describes the signals of the four DMA timer modules. 2.10 UART Module Signals Table 2-9 describes the UART module signals. 2.12 ADC Signals Table 2-11 describes the signals of the analog-to-digital converter. 2.13 General Purpose Timer Signals Table 2-12 describes the general purpose timer signals. 2.14 Pulse-Width Modulator Signals Table 2-14. Debug Support Signals (continued) 2.16 EzPort Signal Descriptions Table 2-15 contains a list of EzPort external signals 2.17 Power and Ground Pins Table 2-15. EzPort Signal Descriptions Table 2-16. Power and Ground Pins Page Chapter 3 ColdFire Core 3.1 Introduction 3.1.1 Overview Figure 3-1. V2 ColdFire Core Pipelines 3.2 Memory Map/Register Description Table 3-1. ColdFire Core Programming Model Two 32-bit memory base address registers (RAMBAR, FLASHBAR) 3.2.1 Data Registers (D0D7) 3.2.2 Address Registers (A0A6) 3.2.3 Supervisor/User Stack Pointers (A7 and OTHER_A7) 3.2.4 Condition Code Register (CCR) 3.2.5 Program Counter (PC) Figure 3-6. Program Counter Register (PC) 3.2.6 Vector Base Register (VBR) Figure 3-5. Condition Code Register (CCR) Table 3-2. CCR Field Descriptions 3.2.7 Status Register (SR) 3.3 Functional Description 3.3.1 Version 2 ColdFire Microarchitecture 3.2.8 Memory Base Address Registers (RAMBAR, FLASHBAR) Page Page Figure 3-12. V2 OEP Embedded-Load Part 1 Figure 3-13. V2 OEP Embedded-Load Part 2 Page 3.3.2 Instruction Set Architecture (ISA_A+) 3.3.3 Exception Processing Overview Page 3.3.3.1 Exception Stack Frame Definition 3.3.4 Processor Exceptions 3.3.4.1 Access Error Exception 3.3.4.2 Address Error Exception 3.3.4.3 Illegal Instruction Exception 3.3.4.4 Divide-By-Zero 3.3.4.5 Privilege Violation 3.3.4.6 Trace Exception 3.3.4.7 Unimplemented Line-A Opcode 3.3.4.8 Unimplemented Line-F Opcode 3.3.4.9 Debug Interrupt 3.3.4.10 RTE and Format Error Exception 3.3.4.11 TRAP Instruction Exception 3.3.4.12 Unsupported Instruction Exception 3.3.4.13 Interrupt Exception 3.3.4.14 Fault-on-Fault Halt 3.3.4.15 Reset Exception Page Figure 3-19. D1 Hardware Configuration Info Table 3-9. D0 Hardware Configuration Info Field Description (continued) Table 3-10. D1 Hardware Configuration Information Field Description 3.3.5 Instruction Execution Timing 3.3.5.1 Timing Assumptions 3.3.5.2 MOVE Instruction Execution Times Table 3-12 lists execution times for MOVE.{B,W} instructions; Table 3-13 lists timings for MOVE.L. Table 3-12. MOVE Byte and Word Execution Times Table 3-13. MOVE Long Execution Times 3.3.5.3 Standard One Operand Instruction Execution Times Table 3-14. One Operand Instruction Execution Times Table 3-13. MOVE Long Execution Times (continued) 3.3.5.4 Standard Two Operand Instruction Execution Times Table 3-15. Two Operand Instruction Execution Times 3.3.5.5 Miscellaneous Instruction Execution Times Table 3-16. Miscellaneous Instruction Execution Times Table 3-15. Two Operand Instruction Execution Times (continued) 3.3.5.6 MAC Instruction Execution Times Table 3-17. MAC Instruction Execution Times Table 3-16. Miscellaneous Instruction Execution Times (continued) 3.3.5.7 Branch Instruction Execution Times Table 3-18. General Branch Instruction Execution Times Table 3-19. Bcc Instruction Execution Times Page Chapter 4 Multiply-Accumulate Unit (MAC) 4.1 Introduction 4.1.1 Overview 4.1.1.1 Introduction to the MAC 4.2 Memory Map/Register Definition Figure 4-2. MAC Status Register (MACSR) Table 4-2. MACSR Field Descriptions 4.2.2 Mask Register (MASK) Figure 4-3. Mask Register (MASK) Figure 4-4. Accumulator Register (ACC) 4.2.3 Accumulator Register (ACC) Table 4-4. MASK Field Descriptions 4.3 Functional Description 4.3.1 Fractional Operation Mode 4.3.1.1 Rounding 4.3.1.2 Saving and Restoring the MAC Programming Model 4.3.1.3 MULS/MULU 4.3.1.4 Scale Factor in MAC or MSAC Instructions 4.3.2 MAC Instruction Set Summary 4.3.3 MAC Instruction Execution Times 4.3.4 Data Representation 4.3.5 MAC Opcodes Page Page Page Page Page Chapter 5 Static RAM (SRAM) 5.1 Introduction 5.1.1 Overview 5.1.2 Features 5.2 Memory Map/Register Description 5.2.1 SRAM Base Address Register (RAMBAR) 5.3 Initialization/Application Information Table 5-2. RAMBAR Field Descriptions (continued) 5.3.1 SRAM Initialization Code 5.3.2 Power Management Chapter 6 Clock Module 6.1 Introduction 6.2 Features 6.3 Modes of Operation 6.3.1 Backup Watchdog Timer Mode 6.4 Low-Power Mode Operation 6.5 Block Diagram Figure 6-1. Clock Module Block Diagram 6.6 Signal Descriptions 6.6.1 EXTAL 6.6.2 XTAL 6.6.3 CLKOUT 6.6.4 CLKMOD[1:0] 6.7 Memory Map and Registers 6.7.1 Register Descriptions Table 6-4. Clock Module Memory Map 6.7.1.1 Synthesizer Control Register (SYNCR) Figure 6-2. Synthesizer Control Register (SYNCR) Table 6-5. SYNCR Field Descriptions Table 6-5. SYNCR Field Descriptions (continued) 6.7.1.2 Synthesizer Status Register (SYNSR) Figure 6-3. Synthesizer Status Register (SYNSR) Table 6-5. SYNCR Field Descriptions (continued) Table 6-6. SYNSR Field Descriptions 6.7.1.3 Relaxation Oscillator Control Register (ROCR) 6.7.1.4 Low-Power Divider Register (LPDR) 6.7.1.5 Clock Control High Register (CCHR) 6.7.1.6 Clock Control Low Register (CCLR) 6.7.1.7 Oscillator Control High Register (OCHR) The OCHR is used to enable and configure the relaxation oscillator. Figure 6-7. Clock Control Low Register (CCLR) Table 6-10. CCLR Field Descriptions Table 6-11. CCLR[OSCSEL1] and CCLR[OSCSEL0] Settings 6.7.1.8 Oscillator Control Low Register (OCLR) The OCLR is used to enable and configure the external oscillator. Figure 6-9. Oscillator Control Low Register (OCLR) Figure 6-8. Oscillator Control High Register (OCHR) Table 6-12. OCHR Field Descriptions 6.7.1.9 Real-Time Clock Control Register (RTCCR) The RTCCR is used to configure the RTC oscillator. Table 6-13. OCLR Field Descriptions Figure 6-10. Real-Time Clock Control Register (RTCCR) Table 6-14. RTCCR Field Descriptions 6.7.1.10 Backup Watchdog Timer Control Register (BWCR) Figure 6-11. Backup Watchdog Timer Control Register (BWCR) Table 6-15. BWCR Field Descriptions Table 6-14. RTCCR Field Descriptions (continued) 6.8 Functional Description 6.8.1 System Clock Modes 6.8.2 Clock Operation During Reset 6.8.3 System Clock Generation 6.8.4 PLL Operation 6.8.4.1 Phase and Frequency Detector (PFD) 6.8.4.2 Charge Pump/Loop Filter 6.8.4.3 Voltage Control Output (VCO) 6.8.4.4 Multiplication Factor Divider (MFD) 6.8.4.5 PLL Lock Detection 6.8.4.6 PLL Loss of Lock Conditions 6.8.4.7 PLL Loss of Lock Reset 6.8.4.8 Loss of Clock Detection 6.8.4.9 Loss of Clock Reset 6.8.4.10 Alternate Clock Selection 6.8.4.11 Loss of Clock in Stop Mode Table 6-19. Stop Mode Operation Page Page Page Page Page Chapter 7 Backup Watchdog Timer (BWT) Module 7.1 Introduction 7.1.1 Overview 7.1.2 Modes of Operation 7.1.2.1 Wait Mode 7.2 Memory Map and Register Definition 7.2.1 Memory Map 7.2.2 Register Descriptions 7.2.2.1 Backup Watchdog Timer Control Register (WCR) Figure 7-2. Backup Watchdog Timer Control Register (WCR) Table 7-2. WCR Field Descriptions 7.2.2.2 Backup Watchdog Timer Modulus Register (WMR) 7.2.2.3 Backup Watchdog Timer Count Register (WCNTR) 7.2.2.4 Backup Watchdog Timer Service Register (WSR) 7.3 Functional Description Chapter 8 Power Management 8.1 Introduction This chapter explains the low-power operation of the MCF52211. 8.1.1 Features 8.2 Memory Map/Register Definition 8.2.1 Peripheral Power Management Registers (PPMRH, PPMRL) Table 8-2. PPMRH Field Descriptions 8.2.1.1 Peripheral Power Management Register Low (PPMRL) Figure 8-2. Peripheral Power Management Register Low (PPMRL) Table 8-3. PPMRL Field Descriptions 8.2.2 Low-Power Interrupt Control Register (LPICR) Table 8-3. PPMRL Field Descriptions (continued) Page 8.2.3 Peripheral Power Management Set Register (PPMRS) Table 8-4. LPICR Field Description (continued) Table 8-5. XLPM_IPL Settings Figure 8-4. Peripheral Power Management Set Register (PPMRS) Table 8-6. PPMRS Field Descriptions 8.2.4 Peripheral Power Management Clear Register (PPMRC) 8.2.5 Low-Power Control Register (LPCR) 8.3 IPS Bus Timeout Monitor 8.4 Functional Description 8.4.1 Low-Power Modes 8.4.1.1 Run Mode 8.4.1.2 Wait Mode 8.4.1.3 Doze Mode 8.4.1.4 Stop Mode 8.4.1.5 Peripheral Shut Down 8.4.2 Peripheral Behavior in Low-Power Modes 8.4.2.1 ColdFire Core 8.4.2.2 Static Random-Access Memory (SRAM) 8.4.2.3 System Control Module (SCM) 8.4.2.4 DMA Controller (DMA0DMA3) 8.4.2.6 I2C Module 8.4.2.7 Queued Serial Peripheral Interface (QSPI) 8.4.2.8 DMA Timers (DTIM0DTIM3) 8.4.2.9 Interrupt Controllers (INTC0, INTC1) 8.4.2.10 I/O Ports 8.4.2.11 Reset Controller 8.4.2.12 Chip Configuration Module 8.4.2.13 Clock Module 8.4.2.14 Edge Port 8.4.3 Summary of Peripheral State During Low-Power Modes Table 8-10. CPU and Peripherals in Low-Power Modes (continued) Chapter 9 Chip Configuration Module (CCM) 9.1 Introduction 9.1.1 Features 9.2 External Signal Descriptions 9.3 Memory Map/Register Definition 9.3.2 Memory Map 9.3.3 Register Descriptions 9.3.3.1 Chip Configuration Register (CCR) The following section describes the CCM registers. Table 9-3. Chip Configuration Module Memory Map 9.3.3.2 Reset Configuration Register (RCON) Figure 9-3. Chip Identification Register (CIR) 9.3.3.3 Chip Identification Register (CIR) Figure 9-2. Reset Configuration Register (RCON) Table 9-5. RCON Field Descriptions Table 9-6. CIR Field Description Page Chapter 10 Reset Controller Module 10.1 Introduction 10.2 Features 10.3 Block Diagram 10.4 Signals 10.4.1 RSTI 10.4.2 RSTO 10.5 Memory Map and Registers See Table 10-2 for the memory map and the following paragraphs for a description of the registers. 10.5.1 Reset Control Register (RCR) Table 10-2. Reset Controller Memory Map Figure 10-2. Reset Control Register (RCR) Table 10-3. RCR Field Descriptions 10.5.2 Reset Status Register (RSR) Figure 10-3. Reset Status Register (RSR) Table 10-4. RSR Field Descriptions Table 10-3. RCR Field Descriptions (continued) 10.6 Functional Description 10.6.1 Reset Sources Table 10-5 defines the sources of reset and the signals driven by the reset controller. Table 10-5. Reset Source Summary Table 10-4. RSR Field Descriptions (continued) 10.6.1.1 Power-On Reset 10.6.1.2 External Reset 10.6.1.3 Loss-of-Clock Reset 10.6.1.4 Loss-of-Lock Reset 10.6.1.5 Software Reset Page Figure 10-4. Reset Control Flow 10-8 Freescale Semiconductor 10.6.2.1 Synchronous Reset Requests 10.6.2.2 Internal Reset Request 10.6.2.3 Power-On Reset/Low-Voltage Detect Reset 10.6.3 Concurrent Resets 10.6.3.1 Reset Flow 10.6.3.2 Reset Status Flags Chapter 11 Real-Time Clock 11.1 Introduction 11.1.1 Overview 11.1.2 Features 11.1.3 Modes of Operation 11.2 Memory Map/Register Definition 11.2.1 Register Descriptions 11.2.1.1 RTC Hours and Minutes Counter Register (HOURMIN) Figure 11-2. RTC Hours and Minutes Counter Register (HOURMIN) Table 11-2. HOURMIN Field Descriptions 11.2.1.2 RTC Seconds Counter Register (SECONDS) Figure 11-3. RTC Seconds Counter Register (SECONDS) Table 11-3. SECONDS Field Descriptions 11.2.1.3 RTC Hours and Minutes Alarm Register (ALRM_HM) Figure 11-4. RTC Hours and Minutes Alarm Register (ALRM_HM) Table 11-4. ALRM_HM Field Descriptions 11.2.1.4 RTC Seconds Alarm Register (ALRM_SEC) Figure 11-5. RTC Seconds Alarm Register (ALRM_SEC) Table 11-5. ALRM_SEC Field Descriptions 11.2.1.5 RTC Control Register (RTCCTL) Figure 11-6. RTC Control Register (RTCCTL) Table 11-6. RTCCTL Field Descriptions 11.2.1.6 RTC Interrupt Status Register (RTCISR) Figure 11-7. RTC Interrupt Status Register (RTCISR) Table 11-7. RTCISR Field Descriptions 11.2.1.7 RTC Interrupt Enable Register (RTCIENR) Figure 11-8. RTC Interrupt Enable Register (RTCIENR) Table 11-8. RTCIENR Field Descriptions 11.2.1.8 RTC Stopwatch Minutes Register (STPWCH) Figure 11-9. RTC Stopwatch Minutes Register (STPWCH) Table 11-9. STPWCH Field Descriptions 11.2.1.9 RTC Days Counter Register (DAYS) Figure 11-10. RTC Days Counter Register (DAYS) Table 11-10. DAYS Field Descriptions 11.2.1.10 RTC Day Alarm Register (ALRM_DAY) Figure 11-12. RTC General Oscillator Count Upper Register (RTCGOCU) Figure 11-11. RTC Day Alarm Register (ALRM_DAY) 11.2.1.11 RTC General Oscillator Count Registers (RTCGOCU and RTCGOCL) Table 11-11. ALRM_DAY Field Descriptions 11.3 Functional Description 11.3.1 Prescaler and Counter 11.3.2 Alarm 11.3.3 Minute Stopwatch 11.4 Initialization/Application Information 11.4.1 Flow Chart of RTC Operation Figure 11-14. Flow Chart of RTC Operation 11.4.2 Code Example for Initializing the Real-Time Clock Figure 11-15. Code Example for Initializing the Real-Time Clock Figure 11-15 shows sample code for initializing the RTC. Page Chapter 12 System Control Module (SCM) 12.1 Introduction 12.2 Overview 12.3 Features 12.4 Memory Map and Register Definition Table 12-1. SCM Register Map 12.5 Register Descriptions 12.5.1 Internal Peripheral System Base Address Register (IPSBAR) Table 12-2. Accessing as 32-Bit Registers Table 12-1. SCM Register Map (continued) 12.5.2 Memory Base Address Register (RAMBAR) Page 12.5.3 Core Reset Status Register (CRSR) 12.5.4 Core Watchdog Control Register (CWCR) 12.5.5 Core Watchdog Service Register (CWSR) Table 12-6. CWCR Field Description 12.6 Internal Bus Arbitration 12.6.1 Overview 12.6.2 Arbitration Algorithms 12.6.2.1 Round-Robin Mode 12.6.2.2 Fixed Mode 12.6.3 Bus Master Park Register (MPARK) Master 2 (M2): 4-channel DMA Master 0 (M0): V2 ColdFire Core Figure 12-7. Default Bus Master Park Register (MPARK) Table 12-7. MPARK Field Description 12.7 System Access Control Unit (SACU) 12.7.1 Overview 12.7.2 Features 12.7.3 Memory Map/Register Definition 12.7.3.1 Master Privilege Register (MPR) 12.7.3.2 Peripheral Access Control Registers (PACR0PACR8) Figure 12-9. Peripheral Access Control Register (PACRn) Table 12-10. PACR Field Descriptions Table 12-11. PACR ACCESSCTRL Bit Encodings Table 12-12. Peripheral Access Control Registers (PACRs) 12.7.3.3 Grouped Peripheral Access Control Registers (GPACR0 & GPACR1) Table 12-13. Grouped Peripheral Access Control Register (GPACR) Field Descriptions Table 12-14. GPACR ACCESS_CTRL Bit Encodings Table 12-15. GPACR Address Space Freescale Semiconductor 13-1 Chapter 13 General Purpose I/O Module 13.1 Introduction Figure 13-1. General Purpose I/O Module Block Diagram 13.2 Overview 13.3 Features 13.4 Signal Descriptions 13.5 Memory Map/Register Definition 13.5.1 Ports Memory Map Table 13-1. Registers in the MCF52211 Ports Address Space Address 3124 2316 158 70 Access 13.6 Register Descriptions 13.6.1 Port Output Data Registers (PORTn) 13.6.2 Port Data Direction Registers (DDRn) Figure 13-4. Port QS Output Data Register (PORTQS) Figure 13-5. Port NQ Output Data Register (PORTNQ) Figure 13-6. Port AS Output Data Register (PORTAS) Table 13-2. PORTn Field Descriptions Figure 13-7. Port Data Direction Registers with Bits 7:0 Implemented (DDRDD, DDRAN) Figure 13-10. Port NQ Data Direction Register (DDRNQ) Figure 13-9. Port QS Data Direction Register (DDRQS) 13.6.3 Port Pin Data/Set Data Registers (PORTnP/SETn) Figure 13-14. Port QS Pin Data/Set Data Register (PORTQS/SETQS) Figure 13-16. Port AS Pin Data/Set Data Register (PORTAS/SETAS) Figure 13-15. Port NQ Pin Data/Set Data Register (PORTNQ/SETNQ) 13.6.4 Port Clear Output Data Registers (CLRn) Table 13-4. PORTnP/SETn Field Descriptions Figure 13-17. Port Clear Output Data Registers with Bits 7:0 Implemented (CLRDD, CLRAN) 13.6.5 Pin Assignment Registers Figure 13-19. Port QS Clear Output Data Register (CLRQS) Figure 13-20. Port NQ Clear Output Data Register (CLRNQ) Figure 13-21. Port AS Clear Output Data Register (CLRAS) Table 13-5. CLRn Field Descriptions 13.6.5.1 Dual-Function Pin Assignment Registers 13.6.5.2 Quad Function Pin Assignment Registers Figure 13-22. Dual-Function Pin Assignment Registers with Bits 7:0 Implemented (PDDPAR, PANPAR) Figure 13-24. Port QS Pin Assignment Register (PQSPAR) Figure 13-25. Port AS Pin Assignment Register (PASPAR) 13.6.5.3 Port NQ Pin Assignment Register (PNQPAR) 13.6.6 Pad Control Registers 13.6.6.1 Pin Slew Rate Register (PSRR) Figure 13-28. Pin Slew Rate Register (PSRR) Table 13-8. PSRR Field Descriptions 13.6.6.2 Pin Drive Strength Register (PDSR) The ports module does not generate interrupt requests. 13.7 Ports Interrupts Figure 13-29. Pin Drive Strength Register (PDSR) Table 13-9. PDSR Field Descriptions Page Chapter 14 Interrupt Controller Module 14.1 68K/ColdFire Interrupt Architecture Overview 14.1.1 Interrupt Controller Theory of Operation 14.1.1.1 Interrupt Recognition 14.1.1.2 Interrupt Prioritization 14.1.1.3 Interrupt Vector Determination 14.2 Memory Map 14.3 Register Descriptions The interrupt controller registers are described in the following sections. Table 14-2. Interrupt Controller Memory Map (continued) 14.3.1 Interrupt Pending Registers (IPRHn, IPRLn) Figure 14-2. Interrupt Pending Register Low (IPRLn) Figure 14-1. Interrupt Pending Register High (IPRHn) Table 14-3. IPRHn Field Descriptions 14.3.2 Interrupt Mask Register (IMRHn, IMRLn) Table 14-4. IPRLn Field Descriptions Figure 14-3. Interrupt Mask Register High (IMRHn) Table 14-5. IMRHn Field Descriptions 14.3.3 Interrupt Force Registers (INTFRCHn, INTFRCLn) Figure 14-5. Interrupt Force Register High (INTFRCHn) Table 14-7. INTFRCHn Field Descriptions Figure 14-6. Interrupt Force Register Low (INTFRCLn) Table 14-8. INTFRCLn Field Descriptions 14.3.4 Interrupt Request Level Register (IRLRn) 14.3.5 Interrupt Acknowledge Level and Priority Register (IACKLPRn) 14.3.6 Interrupt Control Registers (ICRnx) Figure 14-9. Interrupt Control Register (ICRnx) Table 14-12. ICRnx Field Descriptions 14.3.6.1 Interrupt Sources Table 14-13 lists the interrupt sources for each interrupt request line. Page 14.3.7 Software and Level m IACK Registers (SWIACKn, LmIACKn) 14.3.8 Global Level m IACK Registers (GLmIACK) 14.4 Low-Power Wakeup Operation Page Page Chapter 15 Universal Serial Bus, OTG Capable Controller 15.1 Introduction 15.1.1 USB Page 15.1.2 USB On-The-Go 15.1.3 USB-FS Features 15.2 Functional Description 15.2.1 Data Structures 15.3 Programmers Interface 15.3.1 Buffer Descriptor Table 15.3.2 Rx vs. Tx as a USB Target Device or USB Host 15.3.3 Addressing Buffer Descriptor Table Entries 15.3.4 Buffer Descriptor Formats Figure 15-5. Buffer Descriptor Byte Format Table 15-3. Buffer Descriptor Byte Fields 15.3.5 USB Transaction 15.4 Memory Map/Register Definitions The following sections provide details about the registers in the USB OTG memory map. 15.4.1 Capability Registers 15.4.1.1 Peripheral ID Register (PER_ID) Table 15-4. USB Interface Memory Map (continued) 15.4.1.2 Peripheral ID Complement Register (ID_COMP) Figure 15-7. Peripheral ID Register (PER_ID) Table 15-11. PER_ID Field Descriptions Figure 15-8. Peripheral ID Complement Register Table 15-12. ID_COMP Field Descriptions 15.4.1.3 Peripheral Revision Register (REV) This register contains the revision number of the USB Module. Figure 15-9 shows the REV register. 15.4.1.4 Peripheral Additional Info Register (ADD_INFO) Figure 15-9. Peripheral Revision Register Table 15-13. REV Field Descriptions Figure 15-10. Peripheral Additional Info Register Table 15-14. ADD_INFO Field Descriptions 15.4.1.5 OTG Interrupt Status Register (OTG_INT_STAT) Figure 15-11. OTG Interrupt Status Register Table 15-15. OTG_INT_STAT Field Descriptions 15.4.1.6 OTG Interrupt Control Register (OTG_INT_EN) Figure 15-12. OTG Interrupt Control Register Table 15-16. OTG_INT_EN Field Descriptions 15.4.1.7 Interrupt Status Register (OTG_STAT) Figure 15-13. Interrupt Status Register Table 15-17. OTG_STAT Field Descriptions 15.4.1.8 OTG Control Register (OTG_CTRL) Figure 15-14. OTG Control Register Table 15-18. OTG_CTRL Field Descriptions 15.4.1.9 Interrupt Status Register (INT_STAT) Figure 15-15. Interrupt Status Register Table 15-19. INT_STAT Field Descriptions 15.4.1.10 Interrupt Enable Register (INT_ENB) Figure 15-16. Interrupt Enable Register Table 15-20. INT_ENB Field Descriptions 15.4.1.11 Error Interrupt Status Register (ERR_STAT) Figure 15-17. Error Interrupt Status Register Table 15-21. ERR_STAT Field Descriptions 15.4.1.12 Error Interrupt Enable Register (ERR_ENB) Figure 15-18. Error Interrupt Enable Register Table 15-22. ERR_ENB Field Descriptions 15.4.1.13 Status Register (STAT) 15.4.1.14 Control Register (CTL) Figure 15-20. Control Register Table 15-24. CTL Field Descriptions 15.4.1.15 Address Register (ADDR) 15.4.1.16 BDT Page Register 1 (BDT_PAGE_01) Figure 15-22. BDT_PAGE_01 Register Table 15-26. BDT_PAGE_01 Field Descriptions 15.4.1.17 Frame Number Register Low/High (FRM_NUML, FRM_NUMH) Figure 15-23. FRM_NUML Register Table 15-27. FRM_NUML Field Descriptions Figure 15-24. FRM_NUMH Register Table 15-28. FRM_NUMH Field Descriptions 15.4.1.18 Token Register (TOKEN) 15.4.1.19 SOF Threshold Register (SOF_THLD) 15.4.1.20 BDT Page Register 2 (BDT_PAGE_02) 15.4.1.21 BDT Page Register 3 (BDT_PAGE_03) Figure 15-27. BDT_PAGE_02 Register Table 15-31. BDT_PAGE_02 Field Descriptions Figure 15-28. BDT_PAGE_03 Register Table 15-32. BDT_PAGE_03 Field Descriptions 15.4.1.22 Endpoint Control Registers 0 15 (ENDPT015) Figure 15-29. BDT_PAGE_03 Register Table 15-33. BDT_PAGE_03 Field Descriptions Table 15-34. Endpoint Direction and Control Table 15-33. BDT_PAGE_03 Field Descriptions (continued) 15.4.1.23 USB Control Register (USB_CTRL) Figure 15-30. USB Control Register Table 15-35. USB_CTRL Field Descriptions 15.4.1.24 USB OTG Observe Register (USB_OTG_OBSERVE) Figure 15-31. USB OTG Observe Register Table 15-36. USB_OTG_OBSERVE Field Descriptions 15.4.1.25 USB OTG Control Register (USB_OTG_CONTROL) 15.5 OTG and Host Mode Operation Figure 15-32. USB OTG Control Register Table 15-37. USB_OTG_CONTROL Field Descriptions 15.6 Host Mode Operation Examples Page 15.7 On-The-Go Operation 15.7.1 OTG Dual Role A Device Operation Figure 15-33. Dual Role A Device Flow Diagram Table 15-38. State Descriptions for Figure 15-33 15.7.2 OTG Dual Role B Device Operation Figure 15-34. Dual Role B Device Flow Diagram Table 15-39. State Descriptions for Figure 15-34 Table 15-38. State Descriptions for Figure 15-33 (continued) 15.7.3 Power 15.7.4 USB Suspend State Chapter 16 Edge Port Module (EPORT) 16.1 Introduction 16.2 Low-Power Mode Operation 16.3 Interrupt/GPIO Pin Descriptions 16.4 Memory Map/Register Definition 16.4.1 EPORT Pin Assignment Register (EPPAR) The EPORT pin assignment register (EPPAR) controls the function of each pin individually. Table 16-2. Edge Port Module Memory Map Figure 16-2. EPORT Pin Assignment Register (EPPAR) Table 16-3. EPPAR Field Descriptions 16.4.2 EPORT Data Direction Register (EPDDR) The EPORT interrupt enable register (EPIER) enables interrupt requests for each pin individually. 16.4.3 Edge Port Interrupt Enable Register (EPIER) Figure 16-3. EPORT Data Direction Register (EPDDR) Table 16-4. EPDDR Field Descriptions Figure 16-4. EPORT Port Interrupt Enable Register (EPIER) Table 16-5. EPIER Field Descriptions 16.4.4 Edge Port Data Register (EPDR) The EPORT data register (EPDR) holds the data to be driven to the pins. The EPORT pin data register (EPPDR) reflects the current state of the pins. 16.4.5 Edge Port Pin Data Register (EPPDR) Figure 16-5. EPORT Port Data Register (EPDR) Table 16-6. EPDR Field Descriptions 16.4.6 Edge Port Flag Register (EPFR) The EPORT flag register (EPFR) individually latches EPORT edge events. Figure 16-7. EPORT Port Flag Register (EPFR) Table 16-8. EPFR Field Descriptions Chapter 17 DMA Controller Module 17.1 Introduction 17.1.1 Overview 17.1.2 Features 17.2 DMA Transfer Overview 17.3 Memory Map/Register Definition 17.3.1 DMA Request Control (DMAREQC) Figure 17-3. DMA Request Control Register (DMAREQC) Table 17-1. Memory Map for DMA Controller Module Registers 17.3.2 Source Address Registers (SARn) SARn, shown in Figure 17-4, contains the address from which the DMA controller requests data. Figure 17-4. Source Address Registers (SARn) DARn, shown in Figure 17-5, holds the address to which the DMA controller sends data. 17.3.3 Destination Address Registers (DARn) 17.3.4 Byte Count Registers (BCRn) and DMA Status Registers (DSRn) Figure 17-7. DMA Status Registers (DSRn) Table 17-3. DSRn Field Descriptions 17.3.5 DMA Control Registers (DCRn) The DMA control registers (DCRn) are described in Figure 17-8 and Table 17-4. Figure 17-8. DMA Control Registers (DCRn) Table 17-4. DCRn Field Descriptions Page Table 17-4. DCRn Field Descriptions (continued) 17.4 Functional Description 17.4.1 Transfer Requests (Cycle-Steal and Continuous Modes) 17.4.2 Dual-Address Data Transfer Mode 17.4.3 Channel Initialization and Startup 17.4.3.1 Channel Prioritization 17.4.3.2 Programming the DMA Controller Module 17.4.4 Data Transfer 17.4.4.1 Auto-Alignment 17.4.4.2 Bandwidth Control 17.4.5 Termination Page Chapter 18 ColdFire Flash Module (CFM) 18.1 Introduction 18.1.1 Overview 18.1.2 Features COMMON FLASH BUS INTERNAL FLASH BUS 18.2 External Signal Description 18.3 Memory Map and Register Definition 18.3.1 Memory Map 18.3.2 Flash Base Address Register (FLASHBAR) Page Table 18-2. FLASHBAR Field Descriptions Table 18-3. CFM Register Address Map 18.3.3 Register Descriptions 18.3.3.1 CFMMCR CFM Module Configuration Register The CFMMCR register is used to configure and control the operation of the internal bus interface. Figure 18-4. CFM Module Configuration Register (CFMMCR) Table 18-4. CFMMCR Field Descriptions Table 18-3. CFM Register Address Map 18.3.3.2 CFMCLKD CFM Clock Divider Register Figure 18-5. CFM Clock Divider Register (CFMCLKD) Table 18-4. CFMMCR Field Descriptions (continued) All CFMCLKD register bits are readable, while bits [6:0] write once and bit 7 is not writable. 18.3.3.3 CFMSEC CFM Security Register The CFMSEC register is used to store the flash security word and CFM security state. Table 18-5. CFMCLKD Field Descriptions Figure 18-6. CFM Security Register (CFMSEC) Table 18-6. CFMSEC Field Descriptions The CFM flash security operation is described in Section 18.4.3, Flash Security Operation. 18.3.3.4 CFMPROT CFM Protection Register Figure 18-7. CFM Protection Register (CFMPROT) Table 18-7. CFM Security States Table 18-6. CFMSEC Field Descriptions SECTOR 0 PROTECT[31:0] SECTOR 16 SECTOR 15 18.3.3.5 CFMSACC CFM Supervisor Access Register The CFMSACC register is used to control supervisor/user access to the flash memory. Figure 18-9. CFM Supervisor Access Register (CFMSACC) Table 18-9. 18.3.3.6 CFMDACC CFM Data Access Register The CFMDACC register is used to control data/instruction access to the flash memory. Figure 18-11. CFM User Status Register (CFMUSTAT) Figure 18-10. CFM Data Access Register (CFMDACC) 18.3.3.7 CFMUSTAT CFM User Status Register Only one CFMUSTAT register bit can be cleared at a time. Table 18-11. CFMUSTAT Field Descriptions 18.3.3.8 CFMCMD CFM Command Register The CFMCMD register is the flash command register. Figure 18-12. CFM Command Buffer and Register (CFMCMD) Table 18-12. CFMCMD Field Descriptions Table 18-13. CFM Flash Memory Commands 18.4 Functional Description 18.4.1 General 18.4.2 Flash Normal Mode 18.4.2.1 Read Operation 18.4.2.2 Write Operation 18.4.2.3 Program, Erase, and Verify Operations Page Page 18-20 Freescale Semiconductor Figure 18-14. Example Blank Check Command Flow START Page 18-22 Freescale Semiconductor Figure 18-15. Example Page Erase Verify Command Flow START Page 18-24 Freescale Semiconductor Figure 18-16. Example Program Command Flow Page 18-26 Freescale Semiconductor Figure 18-17. Example Page Erase Command Flow Mass Erase The mass erase operation erases all flash memory addresses using an embedded algorithm. Page Figure 18-18. Example Mass Erase Command Flow 18-28 Freescale Semiconductor 18.4.2.4 Stop Mode 18.4.3 Flash Security Operation 18.4.3.1 Backdoor Access Sequence Page Page Chapter 19 EzPort 19.1 Features 19.2 Modes of Operation Figure 19-1 is a block diagram of the EzPort. Figure 19-1. EzPort Block Diagram 19.3 External Signal Description 19.3.1 Overview Table 19-1 contains a list of EzPort external signals. 19.3.2 Detailed Signal Descriptions 19.3.2.1 EZPCK EzPort Clock 19.4 Command Definition 19.4.1 Command Descriptions 19.4.1.1 Write Enable 19.4.1.2 Write Disable 19.4.1.3 Read Status Register The Read Status Register command returns the contents of the EzPort Status register. 19.4.1.4 Write Configuration Register Figure 19-3. EzPort Configuration Register Table 19-3. EzPort Status Register Field Description (continued) 19.4.1.5 Read Data 19.4.1.6 Read Data at High Speed 19.4.1.7 Page Program 19.4.1.8 Sector Erase 19.4.1.9 Bulk Erase 19.5 Functional Description 19.6 Initialization/Application Information Chapter 20 Programmable Interrupt Timers (PIT0PIT1) 20.1 Introduction 20.1.1 Overview 20.1.2 Block Diagram 20.1.3 Low-Power Mode Operation 20.2 Memory Map/Register Definition 20.2.1 PIT Control and Status Register (PCSRn) The PCSRn registers configure the corresponding timers operation. Figure 20-2. PCSRn Register Table 20-3. PCSRn Field Descriptions 20.2.2 PIT Modulus Register (PMRn) Figure 20-3. PIT Modulus Register (PMRn) Table 20-3. PCSRn Field Descriptions (continued) 20.2.3 PIT Count Register (PCNTRn) 20.3 Functional Description 20.3.1 Set-and-Forget Timer Operation 20.3.2 Free-Running Timer Operation 20.3.3 Timeout Specifications 20.3.4 Interrupt Operation Timeout period PRE[3:0] (PM[15:0] 1)+fsys Page Page Chapter 21 General Purpose Timer Module (GPT) 21.1 Introduction 21.2 Features 21-2 Freescale Semiconductor 21.3 Block Diagram Figure 21-1. GPT Block Diagram 21.4 Low-Power Mode Operation 21.5 Signal Description 21.5.1 GPT[2:0] 21.5.2 GPT3 21.5.3 SYNCn 21.6 Memory Map and Registers Table 21-3 shows the memory map of the GPT module. The base address for GPT is IPSBAR + 0x1A_0000. Table 21-3. GPT Memory Map 21.6.1 GPT Input Capture/Output Compare Select Register (GPTIOS) Table 21-3. GPT Memory Map (continued) 21.6.2 GPT Compare Force Register (GPCFORC) Figure 21-4. GPT Output Compare 3 Mask Register (GPTOC3M) 21.6.3 GPT Output Compare 3 Mask Register (GPTOC3M) Figure 21-3. GPT Input Compare Force Register (GPCFORC) Table 21-5. GPTCFORC Field Descriptions 21.6.4 GPT Output Compare 3 Data Register (GPTOC3D) Figure 21-6. GPT Counter Register (GPTCNT) 21.6.5 GPT Counter Register (GPTCNT) Table 21-6. GPTOC3M Field Descriptions Figure 21-5. GPT Output Compare 3 Data Register (GPTOC3D) Table 21-7. GPTOC3D Field Descriptions 21.6.6 GPT System Control Register 1 (GPTSCR1) Table 21-8. GPTCNT Field Descriptions Figure 21-7. GPT System Control Register 1 (GPTSCR1) Table 21-9. GPTSCR1 Field Descriptions Figure 21-8. Fast Clear Flag Logic 21.6.7 GPT Toggle-On-Overflow Register (GPTTOV) 21.6.8 GPT Control Register 1 (GPTCTL1) Figure 21-9. GPT Toggle-On-Overflow Register (GPTTOV) Table 21-10. GPTTOV Field Description Figure 21-10. GPT Control Register 1 (GPTCTL1) 21.6.9 GPT Control Register 2 (GPTCTL2) 21.6.10 GPT Interrupt Enable Register (GPTIE) Figure 21-12. GPT Interrupt Enable Register (GPTIE) Table 21-11. GPTCL1 Field Descriptions Figure 21-11. GPT Control Register 2(GPTCTL2) Table 21-12. GPTLCTL2 Field Descriptions 21.6.11 GPT System Control Register 2 (GPTSCR2) Table 21-13. GPTIE Field Descriptions Figure 21-13. GPT System Control Register 2 (GPTSCR2) Table 21-14. GPTSCR2 Field Descriptions 21.6.12 GPT Flag Register 1 (GPTFLG1) 21.6.13 GPT Flag Register 2 (GPTFLG2) Figure 21-15. GPT Flag Register 2 (GPTFLG2) Figure 21-14. GPT Flag Register 1 (GPTFLG1) Table 21-15. GPTFLG1 Field Descriptions Table 21-14. GPTSCR2 Field Descriptions (continued) 21.6.14 GPT Channel Registers (GPTCn) 21.6.15 Pulse Accumulator Control Register (GPTPACTL) Figure 21-17. Pulse Accumulator Control Register (GPTPACTL) Table 21-16. GPTFLG2 Field Descriptions Figure 21-16. GPT Channel[0:3] Register (GPTCn) Table 21-17. GPTCn Field Descriptions 21.6.16 Pulse Accumulator Flag Register (GPTPAFLG) Table 21-18. GPTPACTL Field Descriptions Figure 21-18. Pulse Accumulator Flag Register (GPTPAFLG) 21.6.17 Pulse Accumulator Counter Register (GPTPACNT) Table 21-19. GPTPAFLG Field Descriptions Figure 21-19. Pulse Accumulator Counter Register (GPTPACNT) Table 21-20. GPTPACR Field Descriptions 21.6.18 GPT Port Data Register (GPTPORT) 21.6.19 GPT Port Data Direction Register (GPTDDR) 21.7 Functional Description Figure 21-20. GPT Port Data Register (GPTPORT) Table 21-21. GPTPORT Field Descriptions Figure 21-21. GPT Port Data Direction Register (GPTDDR) Table 21-22. GPTDDR Field Descriptions 21.7.1 Prescaler 21.7.2 Input Capture 21.7.3 Output Compare 21.7.4 Pulse Accumulator 21.7.5 Event Counter Mode 21.7.6 Gated Time Accumulation Mode 21.7.7 General-Purpose I/O Ports Table 21-23. GPT Settings and Pin Functions 21.8 Reset 21.9 Interrupts 21.9.1 GPT Channel Interrupts (CnF) 21.9.2 Pulse Accumulator Overflow (PAOVF) 21.9.3 Pulse Accumulator Input (PAIF) 21.9.4 Timer Overflow (TOF) Chapter 22 DMA Timers (DTIM0DTIM3) 22.1 Introduction 22.1.1 Overview 22.1.2 Features 22.2 Memory Map/Register Definition 22.2.1 DMA Timer Mode Registers (DTMRn) DTMRs, shown in Figure 22-2, program the prescaler and various timer modes. Figure 22-2. DTMRn Registers Table 22-1. DMA Timer Module Memory Map 22.2.2 DMA Timer Extended Mode Registers (DTXMRn) The DTXMRn register programs DMA request and increment modes for the timers. Figure 22-3. DTXMRn Registers Table 22-2. DTMRn Field Descriptions 22.2.3 DMA Timer Event Registers (DTERn) Figure 22-4. DTERn Registers Table 22-3. DTXMRn Field Descriptions 22.2.4 DMA Timer Reference Registers (DTRRn) Table 22-4. DTERn Field Descriptions 22.2.5 DMA Timer Capture Registers (DTCRn) 22.2.6 DMA Timer Counters (DTCNn) Figure 22-5. DTRRn Registers Table 22-5. DTRRn Field Descriptions Figure 22-6. DTCRn Registers Table 22-6. DTCRn Field Descriptions 22.3 Functional Description 22.3.1 Prescaler 22.3.2 Capture Mode 22.3.3 Reference Compare 22.3.4 Output Mode 22.4 Initialization/Application Information 22.4.1 Code Example 22.4.2 Calculating Time-Out Values -------------------- 16 127 1+()64453 1+() 2.00 s== Equation 22-1 determines time-out periods for various reference values: Eqn. 22-1 Eqn. 22-2 Chapter 23 Queued Serial Peripheral Interface (QSPI) 23.1 Introduction Figure 23-1. QSPI Block Diagram 23.1.1 Block Diagram Figure 23-1 illustrates the QSPI module. 23.2 External Signal Description 23.3 Memory Map/Register Definition 23.3.1 QSPI Mode Register (QMR) Table 23-3. QMR Field Descriptions Figure 23-3 shows an example of a QSPI clocking and data transfer. Figure 23-3. QSPI Clocking and Data Transfer Example 23.3.2 QSPI Delay Register (QDLYR) The QDLYR is used to initiate master mode transfers and to set various delay parameters. Figure 23-4. QSPI Delay Register (QDLYR) Table 23-4. QDLYR Field Descriptions 23.3.3 QSPI Wrap Register (QWR) Figure 23-6. QSPI Interrupt Register (QIR) The QIR contains QSPI interrupt enables and status flags. 23.3.4 QSPI Interrupt Register (QIR) Figure 23-5. QSPI Wrap Register (QWR) Table 23-5. QWR Field Descriptions 23.3.5 QSPI Address Register (QAR) Table 23-6. QIR Field Descriptions 23.3.6 QSPI Data Register (QDR) 23.3.7 Command RAM Registers (QCR0QCR15) Figure 23-7. QSPI Address Register (QAR) Table 23-7. QAR Field Descriptions Figure 23-8. QSPI Data Register (QDR) Table 23-8. QDR Field Descriptions 23.4 Functional Description Figure 23-9. Command RAM Registers (QCR0QCR15) Table 23-9. QCR0QCR15 Field Descriptions Page 23.4.1 QSPI RAM 23.4.1.1 Receive RAM 23.4.1.2 Transmit RAM 23.4.1.3 Command RAM 23.4.2 Baud Rate Selection 23.4.3 Transfer Delays 23.4.4 Transfer Length 23.4.5 Data Transfer 23.5 Initialization/Application Information Page Chapter 24 UART Modules 24.1 Introduction 24.1.1 Overview 24.1.2 Features 24.2 External Signal Description 24.3 Memory Map/Register Definition Table 24-2. UART Module Memory Map 24.3.1 UART Mode Registers 1 (UMR1n) Figure 24-3. UART Mode Registers 1 (UMR1n) Table 24-3. UMR1n Field Descriptions 24.3.2 UART Mode Register 2 (UMR2n) Figure 24-4. UART Mode Registers 2 (UMR2n) Table 24-3. UMR1n Field Descriptions (continued) 24.3.3 UART Status Registers (USRn) Table 24-4. UMR2n Field Descriptions Figure 24-5. UART Status Registers (USRn) Table 24-5. USRn Field Descriptions 24.3.4 UART Clock Select Registers (UCSRn) TRANSMITTER cannot be specified in one command. 24.3.5 UART Command Registers (UCRn) Figure 24-6. UART Clock Select Registers (UCSRn) Table 24-6. UCSRn Field Descriptions Table 24-5. USRn Field Descriptions (continued) Figure 24-7. UART Command Registers (UCRn) Table 24-7. UCRn Field Descriptions 24.3.6 UART Receive Buffers (URBn) Table 24-7. UCRn Field Descriptions (continued) 24.3.7 UART Transmit Buffers (UTBn) 24.3.8 UART Input Port Change Registers (UIPCRn) 24.3.9 UART Auxiliary Control Register (UACRn) The UACRs control the input enable. 24.3.10 UART Interrupt Status/Mask Registers (UISRn/UIMRn) Table 24-8. UIPCRn Field Descriptions Figure 24-11. UART Auxiliary Control Registers (UACRn) Table 24-9. UACRn Field Descriptions Page 24.3.11 UART Baud Rate Generator Registers (UBG1n/UBG2n) Figure 24-15. UART Input Port Registers (UIPn) The UIPn registers, shown in Figure 24-15, show the current state of the UCTSn input. 24.3.12 UART Input Port Register (UIPn) Figure 24-13. UART Baud Rate Generator Registers (UBG1n) 24.4 Functional Description This section describes operation of the clock source generator, transmitter, and receiver. 24.4.1 Transmitter/Receiver Clock Source Table 24-11. UIPn Field Descriptions 24.4.1.1 Programmable Divider clock; when divided by 16, it is asynchronous. 24.4.1.2 Calculating Baud Rates 24.4.2 Transmitter and Receiver Operating Modes 24.4.2.1 Transmitter Page 24.4.2.2 Receiver 24.4.2.3 FIFO 24.4.3 Looping Modes 24.4.3.1 Automatic Echo Mode 24.4.3.2 Local Loopback Mode 24.4.3.3 Remote Loopback Mode 24.4.4 Multidrop Mode Page 24.4.5 Bus Operation 24.4.5.1 Read Cycles 24.4.5.2 Write Cycles 24.5 Initialization/Application Information 24.5.1 Interrupt and DMA Request Initialization 24.5.1.1 Setting up the UART to Generate Core Interrupts 24.5.1.2 Setting up the UART to Request DMA Service 24.5.2 UART Module Initialization Sequence Freescale Semiconductor 24-29 Figure 24-25. UART Mode Programming Flowchart (Sheet 1 of 5) Figure 24-25. UART Mode Programming Flowchart (Sheet 2 of 5) 24-30 Freescale Semiconductor Figure 24-25. UART Mode Programming Flowchart (Sheet 3 of 5) Freescale Semiconductor 24-31 Figure 24-25. UART Mode Programming Flowchart (Sheet 4 of 5) 24-32 Freescale Semiconductor Figure 24-25. UART Mode Programming Flowchart (Sheet 5 of 5) Page Chapter 25 I2C Interface 25.1 Introduction 25.1.1 Block Diagram 25.1.2 Overview 25.1.3 Features 25.2 Memory Map/Register Definition 25.2.1 I2C Address Registers (I2ADRn) 25.2.2 I2C Frequency Divider Registers (I2FDRn) Table 25-1. I2C Module Memory Map Figure 25-2. I2ADRn Registers Table 25-2. I2ADRn Field Descriptions 25.2.3 I2C Control Registers (I2CRn) Figure 25-3. I2FDRn Registers Table 25-3. I2FDRn Field Descriptions Figure 25-4. I2CRn Registers Table 25-4. I2CRn Field Descriptions 25.2.4 I2C Status Registers (I2SRn) The I2SRn contain bits that indicate transaction direction and status. Figure 25-5. I2SRn Registers Table 25-5. I2SRn Field Descriptions 25.2.5 I2C Data I/O Registers (I2DRn) 25.3 Functional Description 25.3.1 START Signal 25.3.2 Slave Address Transmission 25.3.3 Data Transfer 25.3.4 Acknowledge 25.3.5 STOP Signal 25.3.6 Repeated START Figure 25-10. Repeated START Figure 25-11. Data Transfer, Combined Format 25.3.7 Clock Synchronization and Arbitration 25.3.8 Handshaking and Clock Stretching 25.4 Initialization/Application Information 25.4.1 Initialization Sequence 25.4.2 Generation of START 25.4.3 Post-Transfer Software Response 25.4.4 Generation of STOP 25.4.5 Generation of Repeated START 25.4.6 Slave Mode 25.4.7 Arbitration Lost Figure 25-14. Flow-Chart of Typical I2C Interrupt Routine Chapter 26 Analog-to-Digital Converter (ADC) 26.1 Introduction 26.2 Features 26.3 Block Diagram Figure 26-1. Dual ADC Block Diagram 26.4 Memory Map and Register Definition Table 26-1. ADC Register Summary 26.4.1 Control 1 Register (CTRL1) Figure 26-2. Control 1 Register (CTRL1) Table 26-2. CTRL1 Field Descriptions Table 26-1. ADC Register Summary (continued) Table 26-2. CTRL1 Field Descriptions (continued) 26.4.2 Control 2 Register (CTRL2) Figure 26-3. Control 2 Register (CTRL2) Under Sequential Scan Modes 26.4.2.1 CTRL2 Under Sequential Scan Modes Table 26-2. CTRL1 Field Descriptions (continued) 26.4.2.2 CTRL2 Under Parallel Scan Modes Table 26-3. CTRL2 Field Descriptions Under Sequential Scan Modes Table 26-5. ADC Clock Frequency for Various Conversion Clock Sources Table 26-4. CTRL2 Field Descriptions Under Parallel Scan Modes (continued) 26.4.3 Zero Crossing Control Register (ADZCC) 26.4.4 Channel List 1 and 2 Registers (ADLST1 and ADLST2) Figure 26-6. Channel List 1 Register (ADLST1) Table 26-7. ADLST1 Field Descriptions Figure 26-7. Channel List 2 Register (ADLST2) 26.4.5 Sample Disable Register (ADSDIS) Table 26-8. ADLST2 Field Descriptions Table 26-9. ADC Input Conversion for Sample Bits 26.4.6 Status Register (ADSTAT) Table 26-11. ADSTAT Field Descriptions 26.4.7 Limit Status Register (ADLSTAT) Figure 26-10. Limit Status Register (ADLSTAT) Table 26-12. ADLSTAT Field Descriptions Table 26-11. ADSTAT Field Descriptions (continued) 26.4.8 Zero Crossing Status Register (ADZCSTAT) 26.4.9 Result Registers (ADRSLTn) 26.4.10 Low and High Limit Registers (ADLLMTn and ADHLMTn) Figure 26-13. Low Limit Registers (ADLLMTn) Table 26-15. ADLLMTn Field Descriptions Figure 26-14. High Limit Registers (ADHLMTn) Table 26-16. ADHLMTn Field Descriptions 26.4.11 Offset Registers (ADOFSn) 26.4.12 Power Control Register (POWER) Page Table 26-18. POWER Field Descriptions (continued) 26.4.13 Voltage Reference Register (CAL) Figure 26-17. Voltage Reference Register (CAL) Table 26-19. CAL Field Descriptions Table 26-18. POWER Field Descriptions (continued) 26.5 Functional Description Figure 26-18. Sequential Mode Operation of the ADC Figure 26-19. Parallel Mode Operation of the ADC AN7 26.5.1 Input MUX Function Figure 26-20. Input Select Mux Table 26-20. Analog MUX Controls for Each Conversion Mode (continued) 26.5.2 ADC Sample Conversion 26.5.2.1 Single-Ended Samples 26.5.2.2 Differential Samples 26.5.3 ADC Data Processing 26.5.4 Sequential vs. Parallel Sampling 26.5.5 Scan Sequencing 26.5.6 Scan Configuration and Control Table 26-21. ADC Scan Modes 26.5.7 Interrupt Sources 26.5.8 Power Management 26.5.8.1 Power Management Modes 26.5.8.2 Power Management Details 26.5.8.3 ADC STOP Mode of Operation 26.5.9 ADC Clock 26.5.9.1 General 26.5.9.2 Description of Clock Operation 26.5.9.3 ADC Clock Resynchronization at Start of Scan Figure 26-27. ADC Clock Resynchronization for Non-Simultaneous Parallel Modes 26.5.10 Voltage Reference Pins VREFH and VREFL Figure 26-28. ADC Voltage Reference Circuit 26.5.11 Suppl y Pins V Freescale Semiconductor 27-1 Chapter 27 Pulse-Width Modulation (PWM) Module 27.1 Introduction Figure 27-1. PWM Block Diagram 27.1.1 Overview 27.2 Memory Map/Register Definition 27.2.1 PWM Enable Register (PWME) Figure 27-2. PWM Enable Register (PWME) Table 27-2. PWME Field Descriptions 27.2.2 PWM Polarity Register (PWMPOL) 27.2.3 PWM Clock Select Register (PWMCLK) Figure 27-3. PWM Polarity Register (PWMPOL) Table 27-3. PWMPOL Field Descriptions Table 27-2. PWME Field Descriptions (continued) 27.2.4 PWM Prescale Clock Select Register (PWMPRCLK) Figure 27-4. PWM Clock Select Register (PWMCLK) Table 27-4. PWMCLK Field Descriptions Figure 27-5. PWM Prescale Clock Select Register (PWMPRCLK) 27.2.5 PWM Center Align Enable Register (PWMCAE) Table 27-5. PWMPRCLK Field Descriptions Figure 27-6. PWM Center Align Enable Register (PWMCAE) 27.2.6 PWM Control Register (PWMCTL) Table 27-6. PWMCAE Field Descriptions Figure 27-7. PWM Control Register (PWMCTL) Table 27-7. PWMCTL Field Descriptions 27.2.7 PWM Scale A Register (PWMSCLA) = ----------------------------------------- Any value written to this register causes the scale counter to load the new scale value (PWMSCLA). Eqn. 27-1 27.2.8 PWM Scale B Register (PWMSCLB) 27.2.9 PWM Channel Counter Registers (PWMCNTn) 27.2.10 PWM Channel Period Registers (PWMPERn) 27.2.11 PWM Channel Duty Registers (PWMDTYn) 27.2.12 PWM Shutdown Register (PWMSDN) Table 27-12. PWMDTYn Field Descriptions Figure 27-13. PWM Shutdown Register (PWMSDN) Table 27-13. PWMSDN Field Descriptions 27.3 Functional Description 27.3.1 PWM Clock Select 27-14 Freescale Semiconductor Figure 27-14. PWM Clock Select Block Diagram 27.3.1.1 Prescaled Clock (A or B) 27.3.1.2 Scaled Clock (SA or SB) 27.3.1.3 Clock Select 27.3.2 PWM Channel Timers 27.3.2.1 PWM Enable 27.3.2.2 PWM Polarity 27.3.2.3 PWM Period and Duty 27.3.2.4 PWM Timer Counters 27.3.2.5 Left-Aligned Outputs 27.3.2.6 Center-Aligned Outputs 27.3.2.7 PWM 16-Bit Functions Figure 27-20. PWM 16-Bit Mode 27.3.2.8 PWM Boundary Cases Table 27-15. 16-bit Concatenation Mode Summary Table 27-16. PWM Boundary Cases Chapter 28 Debug Module 28.1 Introduction 28.1.1 Block Diagram 28.1.2 Overview 28.2 Signal Descriptions 28.3 Real-Time Trace Support Table 28-3. Processor Status Encoding 28.3.1 Begin Execution of Taken Branch (PST = 0x5) 28.4 Memory Map/Register Definition 28.4.1 Shared Debug Resources 28.4.2 Configuration/Status Register (CSR) Figure 28-3. Configuration/Status Register (CSR) Table 28-6. CSR Field Descriptions Table 28-6. CSR Field Descriptions (continued) 28.4.3 BDM Address Attribute Register (BAAR) 28.4.4 Address Attribute Trigger Register (AATR) Figure 28-4. BDM Address Attribute Register (BAAR) Table 28-7. BAAR Field Descriptions Table 28-6. CSR Field Descriptions (continued) Figure 28-5. Address Attribute Trigger Register (AATR) Table 28-8. AATR Field Descriptions 28.4.5 Trigger Definition Register (TDR) Figure 28-6. Trigger Definition Register (TDR) Table 28-9. TDR Field Descriptions Table 28-9. TDR Field Descriptions (continued) 28.4.6 Program Counter Breakpoint/Mask Registers (PBR03, PBMR) Table 28-9. TDR Field Descriptions (continued) Figure 28-7. PC Breakpoint Register (PBR0) Table 28-10. PBR0 Field Descriptions Figure 28-8. PC Breakpoint Register n (PBRn) Table 28-11. PBRn Field Descriptions 28.4.7 Address Breakpoint Registers (ABLR, ABHR) Figure 28-9. PC Breakpoint Mask Register (PBMR) Table 28-12. PBMR Field Descriptions Figure 28-10. Address Breakpoint Registers (ABLR, ABHR,) Table 28-13. ABLR Field Description Table 28-14. ABHR Field Description 28.4.8 Data Breakpoint and Mask Registers (DBR, DBMR) Figure 28-11. Data Breakpoint Registers (DBR) Table 28-15. DBR Field Descriptions Figure 28-12. Data Breakpoint Mask Registers (DBMR) Table 28-16. DBMR Field Descriptions 28.5 Background Debug Mode (BDM) 28.5.1 CPU Halt 28.5.2 BDM Serial Interface 28.5.2.1 Receive Packet Format 28.5.2.2 Transmit Packet Format The basic transmit packet consists of 16 data bits and 1 reserved bit. 28.5.3 BDM Command Set Table 28-18. Receive BDM Packet Field Description Figure 28-15. Transmit BDM Packet Table 28-19. Transmit BDM Packet Field Description Table 28-20. BDM Command Summary 28.5.3.1 ColdFire BDM Command Format 28.5.3.2 Command Sequence Diagrams 28.5.3.3 Command Set Descriptions Page Command/Result Formats: Figure 28-23. READ Command Sequence Figure 28-22. Page Page Freescale Semiconductor 28-31 DUMP does not check for a valid address; it is a valid command only when Figure 28-27. DUMP Command Sequence Operand Data: None Figure 28-26. DUMP Command/Result Formats Page Freescale Semiconductor 28-33 Figure 28-29. Figure 28-31. GO Command Sequence 0x0 0xC 0x0 0x0 Figure 28-30. GO Command Format Page Page Page Page Page 28.6 Real-Time Debug Support 28.6.1 Theory of Operation Page 28.6.1.1 Emulator Mode 28.6.2 Concurrent BDM and Processor Operation 28.7 Processor Status, Debug Data Definition 28.7.1 User Instruction Set Table 28-25. PST/DDATA Specification for User-Mode Instructions Page Table 28-25. PST/DDATA Specification for User-Mode Instructions (continued) Table 28-26 shows the PST/DDATA specification for multiply-accumulate instructions. Table 28-26. PST/DDATA Values for User-Mode Multiply-Accumulate Instructions 28.7.2 Supervisor Instruction Set 28.8 Freescale-Recommended BDM Pinout Figure 28-44. Recommended BDM Connector Freescale Semiconductor 29-1 Chapter 29 IEEE 1149.1 Test Access Port (JTAG) 29.1 Introduction Figure 29-1. JTAG Block Diagram 29.1.1 Block Diagram Figure 29-1 shows the block diagram of the JTAG module. 29.2 External Signal Description 29.2.1 JTAG Enable (JTAG_EN) 29.2.2 Test Clock Input (TCLK) 29.2.3 Test Mode Select/Breakpoint (TMS/BKPT) 29.2.4 Test Data Input/Development Serial Input (TDI/DSI) 29.2.5 Test Reset/Development Serial Clock (TRST/DSCLK) 29.2.6 Test Data Output/Development Serial Output (TDO/DSO) 29.3 Memory Map/Register Definition 29.3.1 Instruction Shift Register (IR) 29.3.2 IDCODE Register 29.3.3 Bypass Register 29.3.4 JTAG_CFM_CLKDIV Register 29.3.5 TEST_CTRL Register 29.3.6 Boundary Scan Register 29.4 Functional Description 29.4.1 JTAG Module 29.4.2 TAP Controller Figure 29-4. TAP Controller State Machine Flow 29.4.3 JTAG Instructions Table 29-5 describes public and private instructions. Table 29-5. JTAG Instructions 29.4.3.1 IDCODE Instruction 29.4.3.2 SAMPLE/PRELOAD Instruction 29.4.3.3 EXTEST Instruction 29.4.3.4 TEST_LEAKAGE Instruction 29.4.3.5 ENABLE_TEST_CTRL Instruction 29.4.3.6 HIGHZ Instruction 29.4.3.7 LOCKOUT_RECOVERY Instruction 29.4.3.8 CLAMP Instruction 29.5 Initialization/Application Information 29.5.1 Restrictions 29.5.2 Nonscan Chain Operation Appendix A Register Memory Map Quick Reference Table A-2. Module Memory Map Overview Table A-3. Register Memory Map Table A-2. Module Memory Map Overview (continued) Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Appendix B Revision History B.1 Changes between Rev. 1 and Rev. 2 Table 1. MCF52211RM Rev. 1 to Rev. 2 Changes B.2 Changes between Rev. 0 and Rev. 1 Table 2. MCF52211RM Rev. 0 to Rev. 1 Changes