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I
2
C Interface
MCF52211 ColdFire® Integrated Microcontroller Reference Manual, Rev. 2
25-16 Freescale Semiconductor
Figure 25-14. Flow-Chart of Typical I
2
C Interrupt Routine
Clear
Master
Mode?
TX/Rx
?
Last Byte
Transmitted
?
RXAK= 0
?
End of
ADDR Cycle
(Master RX)
?
Write Next
Byte to I2DR
Switch to
Rx Mode
Dummy Read
from I2DR
Generate
STOP Signal
Read Data
from I2DR
And Store
Set TXAK =1
Generate
STOP Signal
2nd Last
Byte to be
Last
Byte to be
?
Arbitration
Lost?
Clear IAL
IAAS=1
?
IAAS=1
?
SRW=1
?
Tx/Rx
?
Set TX
Mode
Write Data
to I2DR
Set RX
Mode
Dummy Read
from I2DR
ACK from
Receiver
?
Tx Next
Byte
Read Data
from I2DR
and Store
Switch to
Rx Mode
Dummy Read
from I2DR
RTE
YN
Y
Y
Y
Y
Y
Y
Y
Y
Y
N
N
N
N
N
N
N
N
N
Y
TX RX
RX
TX
(WRITE)
(Read)
N
IIF
Address
Cycle
Data
Cycle
Read
Read?
- MCF52211 ColdFire 1
- Integrated 1
- How to Reach Us: 2
- Chapter 2 3
- Signal Descriptions 3
- Freescale Semiconductor ii 4
- Chapter 6 5
- Freescale Semiconductor iv 6
- Freescale Semiconductor v 7
- Freescale Semiconductor vii 9
- Freescale Semiconductor viii 10
- Chapter 22 11
- DMA Timers (DTIM0–DTIM3) 11
- Chapter 23 12
- Chapter 24 12
- UART Modules 12
- Chapter 25 13
- C Interface 13
- Chapter 26 14
- Chapter 27 15
- Chapter 28 15
- Debug Module 15
- Chapter 29 16
- Chapter 1 17
- Overview 17
- 1.2 Block Diagram 19
- 1.2 Features 20
- Freescale Semiconductor 1-5 21
- 1-6 Freescale Semiconductor 22
- Freescale Semiconductor 1-7 23
- 1.2.1 V2 Core Overview 24
- 1.2.2 Integrated Debug Module 24
- 1.2.3 JTAG 25
- 1.2.4 On-Chip Memories 26
- 1.2.5 Power Management 26
- Freescale Semiconductor 1-11 27
- 1.2.14 Real-Time Clock (RTC) 28
- 1.2.17 Backup Watchdog Timer 29
- 1.2.20 DMA Controller 29
- 1.2.21 Reset 29
- 1.2.22 GPIO 30
- 2.3 Pin Functions 32
- Freescale Semiconductor 2-7 37
- 2.4 Reset Signals 38
- 2.6 Mode Selection 38
- Table 2-5. Clocking Modes 39
- C I/O Signals 40
- 2.11 DMA Timer Signals 40
- 2.12 ADC Signals 41
- 2.15 Debug Support Signals 41
- 2.17 Power and Ground Pins 43
- 2-14 Freescale Semiconductor 44
- Chapter 3 45
- ColdFire Core 45
- 3-2 Freescale Semiconductor 46
- 3.2.1 Data Registers (D0–D7) 48
- 3.2.5 Program Counter (PC) 50
- 3.2.7 Status Register (SR) 51
- 3.3 Functional Description 52
- 3.3.4 Processor Exceptions 61
- 3.3.4.5 Privilege Violation 63
- 3.3.4.9 Debug Interrupt 64
- 3.3.4.13 Interrupt Exception 65
- 3.3.4.14 Fault-on-Fault Halt 65
- 3.3.4.15 Reset Exception 65
- 3.3.5.1 Timing Assumptions 69
- 3-32 Freescale Semiconductor 76
- Chapter 4 77
- 4.2.2 Mask Register (MASK) 80
- 4.3 Functional Description 82
- 4.3.1.1 Rounding 83
- 4.3.1.3 MULS/MULU 84
- 4.3.4 Data Representation 85
- 4.3.5 MAC Opcodes 85
- Chapter 5 91
- Static RAM (SRAM) 91
- 5.3.2 Power Management 94
- 6.4 Low-Power Mode Operation 96
- 6.5 Block Diagram 97
- 6.6 Signal Descriptions 99
- 6.7 Memory Map and Registers 100
- 0x12_0000 (SYNCR) 101
- Clock Module 102
- 0x12_0002 (SYNSR) 103
- 0x12_0004 (ROCR) 105
- 0x12_0007 (LPDR) 105
- 0x12_0008 (CCHR) 106
- 0x12_0009 (CCLR) 107
- 0x12_000A (OCHR) 108
- 0x12_000B (OCLR) 108
- 0x12_0012 (RTCCR) 109
- 0x12_0013 (BWCR) 110
- 6.8 Functional Description 111
- 6.8.3 System Clock Generation 112
- 6.8.4 PLL Operation 112
- 6.8.4.5 PLL Lock Detection 114
- Freescale Semiconductor 6-21 115
- ≠ Feedback Count 115
- 6.8.4.9 Loss of Clock Reset 116
- 6-28 Freescale Semiconductor 122
- Chapter 7 123
- 7.2.1 Memory Map 124
- 0x14_0000 (WCR) 125
- 0x14_0002 (WMR) 126
- 0x14_0004 (WCNTR) 127
- 0x14_0006 (WSR) 127
- 7.3 Functional Description 128
- Chapter 8 129
- Power Management 129
- 0x000C (PPMRH) 130
- 0x0018 (PPMRL) 132
- 0x0012 (LPICR) 134
- 0x0021 (PPMRS) 135
- 0x0022 (PPMRC) 136
- 0x11_0007 (LPCR) 136
- 8.3 IPS Bus Timeout Monitor 137
- 8.4 Functional Description 138
- 0x0023 (IPSBMT) 138
- 8.4.1.1 Run Mode 139
- 8.4.1.2 Wait Mode 139
- 8.4.1.3 Doze Mode 139
- 8.4.1.4 Stop Mode 139
- 8.4.1.5 Peripheral Shut Down 139
- 8.4.2.1 ColdFire Core 140
- 8.4.2.6 I 141
- C Module 141
- 8.4.2.10 I/O Ports 142
- 8.4.2.11 Reset Controller 142
- 8.4.2.13 Clock Module 142
- 8.4.2.14 Edge Port 142
- 8.4.2.16 PWM Module 143
- 8.4.2.17 BDM 143
- 8.4.2.18 JTAG 143
- Chapter 9 145
- 9.2.1 RCON 146
- 9.2.2 CLKMOD[1:0] 146
- 9.2.3 JTAG_EN 146
- 9.2.4 TEST 146
- 9.3.1 Programming Model 146
- 9.3.2 Memory Map 147
- 9.3.3 Register Descriptions 147
- 9-6 Freescale Semiconductor 150
- Chapter 10 151
- Reset Controller Module 151
- 10.4 Signals 152
- 10.5 Memory Map and Registers 152
- 10.6 Functional Description 155
- 10-6 Freescale Semiconductor 156
- 10.6.2 Reset Control Flow 157
- 10-8 Freescale Semiconductor 158
- 10.6.3 Concurrent Resets 159
- 10.6.3.2 Reset Status Flags 160
- Chapter 11 161
- Real-Time Clock 161
- Use Access 162
- 0x03C0 (HOURMIN) 163
- 0x03C4 (SECONDS) 164
- 0x03C8 (ALRM_HM) 165
- 0x03CC (ALRM_SEC) 166
- 0x03D0 (RTCCTL) 167
- 0x03D4 (RTCISR) 168
- 0x03DC (STPWCH) 170
- 0x03E0 (DAYS) 171
- 0x03E4 (ALRM_DAY) 172
- 0x03F4 (RTCGOCU) 172
- 11.3 Functional Description 173
- 0x03F8 (RTCGOCL) 173
- 11.3.2 Alarm 174
- 11.3.3 Minute Stopwatch 174
- 11-16 Freescale Semiconductor 176
- Chapter 12 177
- System Control Module (SCM) 177
- Table 12-1. SCM Register Map 178
- 12.5 Register Descriptions 179
- [31:24] [23:16] [15:8] [7:0] 179
- 0x0000 (IPSBAR) 180
- 0x0008 (RAMBAR) 181
- 0x0010 (CRSR) 182
- 0x0011 (CWCR) 183
- 12.6 Internal Bus Arbitration 185
- 12.6.2 Arbitration Algorithms 186
- 0x001C (MPARK) 187
- 12.7.1 Overview 188
- 12.7.2 Features 188
- 0x0020 (MPR) 190
- 0x0030 (GPACR0) 192
- Modules Protected 194
- Chapter 13 195
- General Purpose I/O Module 195
- 13.2 Overview 196
- 13.3 Features 196
- 13.4 Signal Descriptions 196
- 31–24 23–16 15–8 7–0 197
- 13.6 Register Descriptions 198
- 0x10_0014 (PORTDD) 198
- 0x10_000E (PORTTA) 198
- 0x10_000C (PORTQS) 199
- 0x10_0008 (PORTNQ) 199
- 0x10_000B (PORTAS) 199
- 0x10_002C (DDRDD) 200
- 0x10_0026 (DDRTA) 200
- 0x10_0024 (DDRQS) 200
- 0x10_0020 (DDRNQ) 200
- 0x10_0023 (DDRAS) 201
- 0x10_0044 (PORTDDP/SETDD) 201
- 0x10_003E (PORTTAP/SETTA) 202
- 0x10_003C (PORTQSP/SETQS) 202
- 0x10_0038 (PORTNQP/SETNQ) 202
- 0x10_003B (PORTASP/SETAS) 202
- 0x10_005C (CLRDD) 203
- 0x10_0056 (CLRTA) 203
- 0x10_0054 (CLRQS) 204
- 0x10_0050 (CLRNQ) 204
- 0x10_0053 (CLRAS) 204
- 0x10_0074 (PDDPAR) 205
- 0x10_0070 (PTDPAR) 205
- 0x10_006C (PQSPAR) 206
- 0x10_006B (PASPAR) 206
- 0x10_006E (PTAPAR) 206
- 0x10_0068 (PNQPAR) 207
- 0x10_0078 (PSRR) 208
- 13.7 Ports Interrupts 209
- 0x10_007C (PDSR) 209
- 13-16 Freescale Semiconductor 210
- Chapter 14 211
- Interrupt Controller Module 211
- 14.2 Memory Map 214
- 14.3 Register Descriptions 215
- 0x0C00 (IPRHn) 216
- 0x0C04 (IPRLn) 216
- 0x0C08 (IMRHn) 217
- 0x0C0C (IMRLn) 218
- 0x0C10 (INTFRCHn) 219
- 0x0C14 (INTFRCLn) 219
- 0x0C18 (IRLRn) 220
- 0x0C19 (IACKLPRn) 220
- 14.3.6.1 Interrupt Sources 223
- Freescale Semiconductor 14-17 227
- 14-18 Freescale Semiconductor 228
- Chapter 15 229
- 15-2 Freescale Semiconductor 230
- 15.1.2 USB On-The-Go 231
- 15.2 Functional Description 232
- 15.3.5 USB Transaction 236
- 15.4.1 Capability Registers 238
- 7 654 3 210 239
- OTG_INT_STAT register 241
- 7 6543210 242
- 76543210 243
- Figure 15-19. Status Register 249
- 76 5 43210 250
- Figure 15-21. ADDR Register 251
- Page Register 1 252
- Register 253
- Figure 15-25. TOKEN Register 254
- 0x1C_00B4 (BDT_PAGE_03) 256
- 0x1C_00C0 (ENDPT0) 257
- 0x1C_0108 (USB_OTG_CONTROL) 261
- 15-34 Freescale Semiconductor 262
- Freescale Semiconductor 15-35 263
- 15.7 On-The-Go Operation 264
- B cable 266
- 15.7.3 Power 267
- 15.7.4 USB Suspend State 268
- Chapter 16 269
- Edge Port Module (EPORT) 269
- 16.2 Low-Power Mode Operation 270
- Chapter 17 275
- DMA Controller Module 275
- 17.1.2 Features 276
- 17.2 DMA Transfer Overview 277
- [31:24] [23:16] [15:8] [7:0] 278
- 0x00_0014 (DMAREQC) 278
- 0x00_0100 (SAR0) 279
- 0x00_0104 (DAR0) 280
- 0x00_0108 (BCR0/DSR0) 280
- See Figure 17-6 (DSRn) 281
- 0x00_010C (DCR0) 282
- 17.4 Functional Description 285
- 17-12 Freescale Semiconductor 286
- Freescale Semiconductor 17-13 287
- 17.4.4 Data Transfer 288
- 17.4.5 Termination 289
- 17-16 Freescale Semiconductor 290
- Chapter 18 291
- ColdFire Flash Module (CFM) 291
- 18.1.2 Features 292
- COMMON FLASH BUS 292
- INTERNAL FLASH BUS 292
- 18.3.1 Memory Map 293
- (from PROGRAM_ARRAY_BASE) 294
- Register Bits 296
- 0x1D_0000 (CFMMCR) 297
- 0x1D_0002 (CFMCLKD) 298
- 0x1D_0008 (CFMSEC) 299
- 0x1D_0010 (CFMPROT) 300
- PROTECT[31:0] — 301
- 0x1D_0014 (CFMSACC) 302
- 0x1D_0018 (CFMDACC) 303
- 0x1D_0020 (CFMUSTAT) 303
- 0x1D_0024 (CFMCMD) 305
- 18.4 Functional Description 306
- 0x1D_004A(CFMCLKSEL) 306
- 18.4.2 Flash Normal Mode 307
- 18-20 Freescale Semiconductor 310
- Freescale Semiconductor 18-21 311
- 18-22 Freescale Semiconductor 312
- Freescale Semiconductor 18-23 313
- Page Erase 314
- Freescale Semiconductor 18-25 315
- Mass Erase 316
- Freescale Semiconductor 18-27 317
- 18-28 Freescale Semiconductor 318
- 18.4.2.4 Stop Mode 319
- 0x0407, security is 320
- 18.4.3.2 Blank Check 321
- 18-32 Freescale Semiconductor 322
- Chapter 19 323
- 19.3.1 Overview 324
- 19.4 Command Definition 325
- Access: read/write 326
- 19.4.1.5 Read Data 328
- 19.4.1.7 Page Program 328
- 19.5 Functional Description 329
- Chapter 20 331
- 0x15_0000 (PCSR0) 333
- 0x15_0002 (PMR0) 334
- 20.3 Functional Description 335
- 0x15_0004 (PCNTR0) 335
- 20.3.3 Timeout Specifications 336
- 20.3.4 Interrupt Operation 336
- Freescale Semiconductor 20-7 337
- 20-8 Freescale Semiconductor 338
- Chapter 21 339
- 21.3 Block Diagram 340
- 21.4 Low-Power Mode Operation 341
- 21.5 Signal Description 341
- 21.6 Memory Map and Registers 342
- 0x1A_0000 (GPTIOS) 343
- 0x1A_0001 (GPCFORC) 344
- 0x1A_0002 (GPTOC3M) 344
- 0x1A_0003 (GPTOC3D) 345
- 0x1A_0004 (GPTCNT) 345
- 0x1A_0006 (GPTSCR1) 346
- 0x1A_0008 (GPTTOV) 347
- 0x1A_0009 (GPTCTL1) 347
- 0x1A_000B (GPTCTL2) 348
- 0x1A_000C (GPTIE) 348
- 0x1A_000D (GPTSCR2) 349
- 0x1A_000E (GPTFLG1) 350
- 0x1A_000F (GPTFLG2) 350
- 0x1A_0010 (GPTC0) 351
- 0x1A_0018 (GPTPACTL) 351
- 0x1A_0019 (GPTPAFLG) 352
- GPTPAFLG 353
- 21.7 Functional Description 354
- 0x1A_001D (GPTPORT) 354
- 0x1A_001E (GPTDDR) 354
- 21.7.1 Prescaler 355
- 21.7.2 Input Capture 355
- 21.7.3 Output Compare 355
- 21.7.4 Pulse Accumulator 356
- 21.7.5 Event Counter Mode 356
- 21.8 Reset 359
- 21.9 Interrupts 359
- 21.9.4 Timer Overflow (TOF) 360
- 22.1.2 Features 362
- 0x00_0400 (DTMR0) 363
- 0x00_0402 (DTXMR0) 364
- 0x00_0403 (DTER0) 365
- 0x00_0404 (DTRR0) 367
- 0x00_0408 (DTCR0) 367
- 22.3 Functional Description 368
- 0x00_040C (DTCN0) 368
- 22.4.1 Code Example 369
- 23.1.2 Overview 372
- 23.1.3 Features 372
- 23.1.4 Modes of Operation 372
- Table 23-2. QSPI Memory Map 373
- 1514131211109876543210 375
- 15 141312 11 109876543 210 376
- 23.4 Functional Description 379
- 23-10 Freescale Semiconductor 380
- 23.4.1 QSPI RAM 381
- 23.4.2 Baud Rate Selection 382
- 23.4.3 Transfer Delays 383
- 23.4.4 Transfer Length 384
- 23.4.5 Data Transfer 384
- Freescale Semiconductor 23-15 385
- 23-16 Freescale Semiconductor 386
- 24.1.2 Features 388
- 0x00_0200 (UMR10) 391
- 0x00_0200 (UMR20) 392
- 0x00_0204 (USR0) 394
- 0x00_0204 (UCSR0) 395
- 0x00_0208 (UCR0) 396
- 0x00_020C (URB0) 398
- 0x00_020C (UTB0) 398
- 0x00_0210 (UIPCR0) 398
- 0x00_0210 (UACR0) 399
- 0x00_0214 (UISR0) 400
- 0x00_0218 (UBG10) 401
- 0x00_021C (UBG20) 401
- 0x00_0234 (UIP0) 401
- 24.4 Functional Description 402
- 0x00_0238 (UOP10) 402
- 24.4.1.1 Programmable Divider 403
- 24.4.2.1 Transmitter 404
- Freescale Semiconductor 24-19 405
- 24.4.2.2 Receiver 406
- 24.4.2.3 FIFO 407
- 24.4.3 Looping Modes 408
- 24.4.3.1 Automatic Echo Mode 409
- 24.4.3.2 Local Loopback Mode 409
- 24.4.3.3 Remote Loopback Mode 409
- 24.4.4 Multidrop Mode 410
- UMR1n[PM] = 11 411
- 24.4.5 Bus Operation 412
- Table 24-13. UART Interrupts 413
- Freescale Semiconductor 24-29 415
- 24-30 Freescale Semiconductor 416
- Freescale Semiconductor 24-31 417
- 24-32 Freescale Semiconductor 418
- Freescale Semiconductor 24-33 419
- 24-34 Freescale Semiconductor 420
- 25.1.1 Block Diagram 422
- 25.1.2 Overview 422
- 25.1.3 Features 423
- 0x0300 (I2ADR0) 424
- 0x0304 (I2FDR0) 425
- 0x0308 (I2CR0) 426
- 0x030C (I2SR0) 427
- 25.3 Functional Description 428
- 0x0310 (I2DR0) 428
- 25.3.3 Data Transfer 429
- 25.3.4 Acknowledge 430
- 25.3.5 STOP Signal 430
- 25.3.6 Repeated START 430
- Figure 25-10. Repeated START 431
- 25-12 Freescale Semiconductor 432
- 25.4.2 Generation of START 433
- 25.4.4 Generation of STOP 434
- 25.4.6 Slave Mode 435
- 25.4.7 Arbitration Lost 435
- C Interrupt Routine 436
- 26.3 Block Diagram 438
- 16 R/W 0x0000 26.4.11/26-17 439
- 0x19_0000 (CTRL1) 439
- 0x19_0002 (CTRL2) 442
- 0x19_0004 (ADZCC) 444
- 0x19_0006 (ADLST1) 445
- 0x19_0008 (ADLST2) 445
- 0x19_000A (ADSDIS) 447
- 0x19_000C (ADSTAT) 447
- 0x19_000E (ADLSTAT) 449
- 0x19_0010 (ADZCSTAT) 450
- 0x19_0012 (ADRSLT0) 451
- 0x19_0022 (ADLLMT0) 452
- 0x19_0032 (ADHLMT0) 452
- 0x19_0052 (POWER) 454
- 0x19_0054 (CAL) 456
- 26.5 Functional Description 457
- 26.5.1 Input MUX Function 459
- 26.5.2 ADC Sample Conversion 461
- 26.5.2.1 Single-Ended Samples 462
- 26.5.2.2 Differential Samples 462
- 26.5.3 ADC Data Processing 463
- 26.5.5 Scan Sequencing 465
- 26-30 Freescale Semiconductor 466
- Table 26-21. ADC Scan Modes 467
- 26.5.7 Interrupt Sources 468
- 26.5.8 Power Management 468
- Freescale Semiconductor 26-33 469
- 26.5.9 ADC Clock 470
- 26.5.11 Supply Pins V 474
- Table 27-1. PWM Memory Map 476
- 0x1B_000C (PWMCNT0) 484
- 0x1B_0014 (PWMPER0) 485
- 0x1B_001C (PWMDTY0) 485
- 27.3 Functional Description 487
- 27-14 Freescale Semiconductor 488
- 27.3.2 PWM Channel Timers 489
- PWMCAE = 1 490
- PWMCAE = 0 490
- 27.3.2.4 PWM Timer Counters 491
- 27.3.2.5 Left-Aligned Outputs 492
- Freescale Semiconductor 27-19 493
- 27.3.2.7 PWM 16-Bit Functions 494
- 27.3.2.8 PWM Boundary Cases 495
- 28.2 Signal Descriptions 498
- 28.3 Real-Time Trace Support 499
- 28.4.1 Shared Debug Resources 503
- WDMREG command 507
- 28.5.1 CPU Halt 515
- 28.5.2 BDM Serial Interface 516
- 28.5.3 BDM Command Set 518
- Freescale Semiconductor 28-25 521
- RAREG/RDREG) 522
- WAREG/WDREG) 523
- Command Formats: 525
- READ is not executed 526
- FILL Command Format 528
- Freescale Semiconductor 28-33 529
- 0x0 0xC 0x0 0x0 529
- 28-34 Freescale Semiconductor 530
- 0x00x00x00x0 530
- NEXT CMD 531
- CMD COMPLETE 531
- 28.6 Real-Time Debug Support 535
- DDATA[3:0] 536
- 28.6.1.1 Emulator Mode 537
- 28.7.1 User Instruction Set 538
- 29.1.2 Features 546
- 29.1.3 Modes of Operation 546
- 29.2.1 JTAG Enable (JTAG_EN) 546
- 29.3.2 IDCODE Register 548
- 29.3.3 Bypass Register 549
- 29.3.5 TEST_CTRL Register 549
- 29.3.6 Boundary Scan Register 549
- 29.4 Functional Description 550
- 29.4.3 JTAG Instructions 551
- 29.4.3.1 IDCODE Instruction 552
- 29.4.3.3 EXTEST Instruction 552
- 29.4.3.6 HIGHZ Instruction 553
- 29.4.3.8 CLAMP Instruction 553
- 29.5.1 Restrictions 554
- Appendix A 555
- Registers 0-7 ADOFS0-7 16 570
- Appendix B 575
- Revision History 575
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