Name: NXP Semiconductors K22F series
Brand: NXP Semiconductors
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Chapter 40

Periodic Interrupt Timer (PIT)

40.1 Introduction

NOTE

For the chip-specific implementation details of this module's

instances, see the chip configuration information.

The PIT module is an array of timers that can be used to raise interrupts and trigger DMA

channels.

40.1.1

Block diagram

The following figure shows the block diagram of the PIT module.

K22F Sub-Family Reference Manual, Rev. 4, 08/2016

NXP Semiconductors 1029

Default Chapter3
- Table of Contents3
Chapter 1 About this Document47
- Overview47
  - Purpose47
  - Audience47
- Conventions47
Chapter 2 Introduction49
- Overview49
- Module Functional Categories49
- Orderable Part Numbers55
Chapter 3 Chip Configuration57
- Introduction57
- Core Modules57
- System Modules67
- Clock Modules81
- Memories and Memory Interfaces84
- Security95
  - CRC Configuration95
  - RNG Configuration96
- Analog97
- Timers108
- Communication Interfaces121
- Human-Machine Interfaces137
  - GPIO Configuration137
Chapter 4 Memory Map139
- Introduction139
- System Memory Map139
  - Aliased Bit-Band Regions141
  - Flash Access Control Introduction142
- Flash Memory Map142
  - Alternate Non-Volatile IRC User Trim Description143
- SRAM Memory Map143
- Peripheral Bridge (AIPS-Lite) Memory Map144
  - Read-After-Write Sequence and Required Serialization of Memory Operations144
  - Peripheral Bridge 0 (AIPS-Lite 0) Memory Map144
- Private Peripheral Bus (PPB) Memory Map148
Chapter 5 Clock Distribution151
- Introduction151
- Programming Model151
- High-Level Device Clocking Diagram151
- Clock Definitions152
  - Device Clock Summary153
- Internal Clocking Requirements156
  - Clock Divider Values after Reset157
  - VLPR Mode Clocking157
- Clock Gating158
- Module Clocks158
Chapter 6 Reset and Boot169
- Introduction169
- Reset170
- Boot177
Chapter 7 Power Management181
- Introduction181
- Clocking Modes181
- Power Modes Description185
- Entering and Exiting Power Modes187
- Power Mode Transitions188
- Power Modes Shutdown Sequencing189
- Flash Program Restrictions190
- Module Operation in Low Power Modes190
Chapter 8 Security195
- Introduction195
- Flash Security195
- Security Interactions with Other Modules196
Chapter 9 Debug199
- Introduction199
  - References201
- The Debug Port201
  - JTAG-To-SWD Change Sequence202
  - JTAG-To-Cjtag Change Sequence202
- Debug Port Pin Descriptions203
- System TAP Connection203
  - IR Codes204
- JTAG Status and Control Registers204
  - MDM-AP Control Register205
  - MDM-AP Status Register207
- Debug Resets208
- Ahb-Ap209
- Itm209
- Core Trace Connectivity210
- Tpiu210
- Dwt210
- Debug in Low Power Modes211
  - Debug Module State in Low Power Modes211
- Debug & Security212
Chapter 10 Signal Multiplexing and Signal Descriptions213
- Introduction213
- Signal Multiplexing Integration213
- Pinout215
  - K22F Signal Multiplexing and Pin Assignments215
  - K22 Pinouts222
- Module Signal Description Tables228
Chapter 11 Port Control and Interrupts (PORT)239
- Introduction239
- Overview239
  - Features239
  - Modes of Operation240
- External Signal Description241
- Detailed Signal Description241
- Memory Map and Register Definition241
- Functional Description254
Chapter 12 System Integration Module (SIM)259
- Introduction259
  - Features259
- Memory Map and Register Definition260
- Functional Description291
Chapter 13 Kinetis Flashloader293
- Chip-Specific Information293
- Introduction293
- Functional Description295
- Peripherals Supported327
- Get/Setproperty Command Properties336
  - Property Definitions338
- Kinetis Flashloader Status Error Codes339
Reset Control Module (RCM)341
- Introduction341
- Reset Memory Map and Register Descriptions341
Chapter 15 System Mode Controller (SMC)351
- Introduction351
- Modes of Operation351
- Memory Map and Register Descriptions353
- Functional Description359
Chapter 16 Power Management Controller (PMC)371
- Introduction371
- Features371
- Low-Voltage Detect (LVD) System371
- I/O Retention373
- Memory Map and Register Descriptions373
Chapter 17 Low-Leakage Wakeup Unit (LLWU)379
- Introduction379
- LLWU Signal Descriptions382
- Memory Map/Register Definition382
- Functional Description396
Chapter 18 Miscellaneous Control Module (MCM)399
- Introduction399
  - Features399
- Memory Map/Register Descriptions399
- Functional Description405
  - Interrupts405
Chapter 19 Crossbar Switch Lite (AXBS-Lite)407
- Introduction407
  - Features407
- Memory Map / Register Definition408
- Functional Description408
  - General Operation408
  - Arbitration409
- Initialization/Application Information410
Chapter 20 Peripheral Bridge (AIPS-Lite)411
- Introduction411
  - Features411
  - General Operation411
- Memory Map/Register Definition412
- Functional Description412
  - Access Support412
Chapter 21 Direct Memory Access Multiplexer (DMAMUX)413
- Introduction413
- External Signal Description415
- Memory Map/Register Definition415
  - Channel Configuration Register (Dmamux_Chcfgn)416
- Functional Description417
- Initialization/Application Information421
  - Reset421
  - Enabling and Configuring Sources421
Chapter 22 Enhanced Direct Memory Access (Edma)425
- Introduction425
  - Edma System Block Diagram425
  - Block Parts426
  - Features427
- Modes of Operation428
- Memory Map/Register Definition429
  - TCD Memory429
  - TCD Initialization429
  - TCD Structure430
  - Reserved Memory and Bit Fields430
- Control Register (DMA_CR)441
- Error Status Register (DMA_ES)444
- Enable Request Register (DMA_ERQ)446
- Enable Error Interrupt Register (DMA_EEI)448
- Clear Enable Error Interrupt Register (DMA_CEEI)450
- Set Enable Error Interrupt Register (DMA_SEEI)451
- Clear Enable Request Register (DMA_CERQ)452
- Set Enable Request Register (DMA_SERQ)453
- Clear DONE Status Bit Register (DMA_CDNE)454
- Set START Bit Register (DMA_SSRT)455
- Clear Error Register (DMA_CERR)456
- Clear Interrupt Request Register (DMA_CINT)457
- Interrupt Request Register (DMA_INT)458
- Error Register (DMA_ERR)460
- Hardware Request Status Register (DMA_HRS)463
- Enable Asynchronous Request in Stop Register (DMA_EARS)466
- Channel N Priority Register (Dma_Dchprin)468
- TCD Source Address (Dma_Tcdn_Saddr)469
- TCD Signed Source Address Offset (Dma_Tcdn_Soff)469
- TCD Transfer Attributes (Dma_Tcdn_Attr)470
- TCD Minor Byte Count (Minor Loop Mapping Disabled) (Dma_Tcdn_Nbytes_Mlno)471
- TCD Signed Minor Loop Offset (Minor Loop Mapping Enabled and Offset Disabled)472
  - (Dma_Tcdn_Nbytes_Mloffno)472
- TCD Signed Minor Loop Offset (Minor Loop Mapping and Offset Enabled)473
  - (Dma_Tcdn_Nbytes_Mloffyes)473
- TCD Last Source Address Adjustment (Dma_Tcdn_Slast)474
- TCD Destination Address (Dma_Tcdn_Daddr)475
- TCD Signed Destination Address Offset (Dma_Tcdn_Doff)475
- TCD Current Minor Loop Link, Major Loop Count (Channel Linking Enabled) (Dma_Tcdn_Citer_Elinkyes)476
  - TCD Current Minor Loop Link, Major Loop Count (Channel Linking Disabled) (Dma_Tcdn_Citer_Elinkno)477
  - TCD Last Destination Address Adjustment/Scatter Gather Address (Dma_Tcdn_Dlastsga)478
  - TCD Control and Status (Dma_Tcdn_Csr)479
  - TCD Beginning Minor Loop Link, Major Loop Count (Channel Linking Enabled) (Dma_Tcdn_Biter_Elinkyes)481
  - TCD Beginning Minor Loop Link, Major Loop Count (Channel Linking Disabled) (Dma_Tcdn_Biter_Elinkno)482
- Functional Description483
  - Edma Basic Data Flow483
  - Fault Reporting and Handling486
  - Channel Preemption489
  - Performance489
- Initialization/Application Information493
  - Edma Initialization493
  - Programming Errors495
  - Arbitration Mode Considerations496
  - Performing DMA Transfers496
  - Monitoring Transfer Descriptor Status500
  - Channel Linking502
  - Dynamic Programming503
  - Lockstep507
Chapter 23 External Watchdog Monitor (EWM)509
- Introduction509
- EWM Signal Descriptions512
- Memory Map/Register Definition512
- Functional Description515
Chapter 24 Watchdog Timer (WDOG)519
- Introduction519
- Features519
- Functional Overview520
- Testing the Watchdog525
  - Quick Test526
  - Byte Test526
- Backup Reset Generator527
- Generated Resets and Interrupts528
- Memory Map and Register Definition528
- Watchdog Operation with 8-Bit Access535
  - General Guideline535
  - Refresh and Unlock Operations with 8-Bit Access536
- Restrictions on Watchdog Operation537
Chapter 25 Multipurpose Clock Generator (MCG)539
- Introduction539
  - Features539
  - Modes of Operation543
- External Signal Description543
- Memory Map/Register Definition543
- Functional Description557
- Initialization / Application Information564
Chapter 26 Oscillator (OSC)577
- Introduction577
- Features and Modes577
- Block Diagram578
- OSC Signal Descriptions578
- External Crystal / Resonator Connections579
- External Clock Connections580
- Memory Map/Register Definitions581
  - OSC Memory Map/Register Definition581
- Functional Description583
- Reset587
- Low Power Modes Operation588
- Interrupts588
Chapter 27 RTC Oscillator (OSC32K)589
- Introduction589
  - Features and Modes589
  - Block Diagram589
- RTC Signal Descriptions590
  - EXTAL32 - Oscillator Input590
  - XTAL32 - Oscillator Output590
- External Crystal Connections591
- Memory Map/Register Descriptions591
- Functional Description591
- Reset Overview592
- Interrupts592
Chapter 28 Flash Memory Controller (FMC)593
- Introduction593
  - Overview593
  - Features594
- Modes of Operation594
- External Signal Description594
- Memory Map and Register Descriptions594
- Functional Description614
- Initialization and Application Information627
Chapter 29 Flash Memory Module (FTFA)629
- Introduction629
- External Signal Description632
- Memory Map and Registers633
- Functional Description648
- Overview681
Chapter 30682
- Block Diagram682
- Features682
- Modes of Operation682
- External Signal Descriptions683
- Command Definition684
  - Command Descriptions685
- Flash Memory Map for Ezport Access692
Chapter 31 External Bus Interface (Flexbus)693
- Introduction693
  - Definition693
  - Features694
- Signal Descriptions694
- Memory Map/Register Definition696
- Functional Description703
- Initialization/Application Information739
  - Initializing a Chip-Select739
  - Reconfiguring a Chip-Select739
Chapter 32 Cyclic Redundancy Check (CRC)741
- Introduction741
- Memory Map and Register Descriptions742
- Functional Description745
Chapter 33 Random Number Generator Accelerator (RNGA)751
- Introduction751
  - Overview751
- Modes of Operation752
  - Entering Normal Mode752
  - Entering Sleep Mode752
- Memory Map and Register Definition753
- Functional Description758
  - Output (OR) Register758
  - Core Engine / Control Logic758
- Initialization/Application Information759
Chapter 34 Analog-To-Digital Converter (ADC)761
- Introduction761
  - Features761
  - Block Diagram762
- ADC Signal Descriptions764
- Memory Map and Register Definitions766
- Functional Description789
- Initialization Information807
  - ADC Module Initialization Example807
- Application Information809
  - External Pins and Routing809
  - Sources of Error811
- Introduction817
Chapter 35817
- CMP Features817
- 6-Bit DAC Key Features818
- ANMUX Key Features818
- CMP, DAC and ANMUX Diagram819
- CMP Block Diagram820
- Memory Map/Register Definitions822
- Functional Description828
- CMP Interrupts841
- DMA Support841
- CMP Asynchronous DMA Support842
- Digital-To-Analog Converter843
- DAC Functional Description843
  - Voltage Reference Source Select843
- DAC Resets844
- DAC Clocks844
- DAC Interrupts844
Chapter 36845
- Introduction845
- Features845
- Block Diagram845
- Memory Map/Register Definition846
- Functional Description853
- Introduction857
  - Overview858
  - Features858
Chapter 37 Voltage Reference (VREFV1)859
- Modes of Operation859
- VREF Signal Descriptions859
- Memory Map and Register Definition860
  - VREF Trim Register (VREF_TRM)860
  - VREF Status and Control Register (VREF_SC)861
- Functional Description862
- Initialization/Application Information865
- Introduction867
  - Features867
  - Implementation868
Chapter 38 Programmable Delay Block (PDB)869
- Back-To-Back Acknowledgment Connections869
- DAC External Trigger Input Connections869
- Block Diagram869
- Modes of Operation871
- PDB Signal Descriptions871
- Memory Map and Register Definition871
- Functional Description883
- Application Information888
  - Impact of Using the Prescaler and Multiplication Factor on Timing Resolution888
Chapter 39 Flextimer Module (FTM)891
- Introduction891
- FTM Signal Descriptions896
- Memory Map and Register Definition896
- Functional Description946
- Reset Overview1024
- FTM Interrupts1025
- Initialization Procedure1026
Chapter 40 Periodic Interrupt Timer (PIT)1029
- Introduction1029
  - Block Diagram1029
  - Features1030
- Signal Description1030
- Memory Map/Register Description1031
- Functional Description1035
- Initialization and Application Information1037
- Example Configuration for Chained Timers1038
Chapter 41 Low-Power Timer (LPTMR)1041
- Introduction1041
  - Features1041
  - Modes of Operation1041
- LPTMR Signal Descriptions1042
  - Detailed Signal Descriptions1042
- Memory Map and Register Definition1042
- Functional Description1047
- Introduction1051
Chapter 421051
- Features1051
- Modes of Operation1051
- RTC Signal Descriptions1052
- Register Definition1053
- Functional Description1064
- Introduction1069
- Functional Description1072
  - Data Structures1072
  - On-Chip Transceiver Required External Components1073
- Programmers Interface1075
- Memory Map/Register Definitions1082
- OTG and Host Mode Operation1110
- Host Mode Operation Examples1110
- On-The-Go Operation1113
  - OTG Dual Role a Device Operation1114
  - OTG Dual Role B Device Operation1115
- Device Mode IRC48 Operation1117
  - Modes of Operation1121
- USB Voltage Regulator Module Signal Descriptions1121
- Introduction1123
Chapter 451123
- Block Diagram1123
- Features1124
- Interface Configurations1126
- Modes of Operation1126
- Module Signal Descriptions1128
- Memory Map/Register Definition1130
- Functional Description1151
- Initialization/Application Information1174
Chapter 46 Inter-Integrated Circuit (I2C)1181
- Introduction1181
- I2C Signal Descriptions1183
- Memory Map/Register Definition1184
- Functional Description1196
- Initialization/Application Information1211
Chapter 47 Universal Asynchronous Receiver/Transmitter (UART)1215
- Introduction1215
  - Features1215
  - Modes of Operation1217
- UART Signal Descriptions1218
  - Detailed Signal Descriptions1218
- Memory Map and Registers1219
  - UART Baud Rate Registers: High (Uartx_Bdh)1224
  - UART Baud Rate Registers: Low (Uartx_Bdl)1225
  - UART Control Register 1 (Uartx_C1)1226
- UART Control Register 2 (Uartx_C2)1227
- UART Status Register 1 (Uartx_S1)1229
- UART Status Register 2 (Uartx_S2)1232
- UART Control Register 3 (Uartx_C3)1234
- UART Data Register (Uartx_D)1235
- UART Match Address Registers 1 (Uartx_Ma1)1236
- UART Match Address Registers 2 (Uartx_Ma2)1237
- UART Control Register 4 (Uartx_C4)1237
- UART Control Register 5 (Uartx_C5)1238
- UART Extended Data Register (Uartx_Ed)1239
- UART Modem Register (Uartx_Modem)1240
- UART Infrared Register (Uartx_Ir)1241
- UART FIFO Parameters (Uartx_Pfifo)1242
- UART FIFO Control Register (Uartx_Cfifo)1243
- UART FIFO Status Register (Uartx_Sfifo)1244
- UART FIFO Transmit Watermark (Uartx_Twfifo)1245
- UART FIFO Transmit Count (Uartx_Tcfifo)1246
- UART FIFO Receive Watermark (Uartx_Rwfifo)1246
- UART FIFO Receive Count (Uartx_Rcfifo)1247
- UART 7816 Control Register (Uartx_C7816)1247
- UART 7816 Interrupt Enable Register (Uartx_Ie7816)1249
- UART 7816 Interrupt Status Register (Uartx_Is7816)1250
- UART 7816 Wait Parameter Register (Uartx_Wp7816)1252
- UART 7816 Wait N Register (Uartx_Wn7816)1252
- UART 7816 Wait FD Register (Uartx_Wf7816)1253
- UART 7816 Error Threshold Register (Uartx_Et7816)1253
- UART 7816 Transmit Length Register (Uartx_Tl7816)1254
- UART 7816 ATR Duration Timer Register a (Uartx_Ap7816A_T0)1254
- UART 7816 ATR Duration Timer Register B (Uartx_Ap7816B_T0)1255
  - UART 7816 Wait Parameter Register a (Uartx_Wp7816A_T0)1256
  - UART 7816 Wait Parameter Register a (Uartx_Wp7816A_T1)1256
  - UART 7816 Wait Parameter Register B (Uartx_Wp7816B_T0)1257
  - UART 7816 Wait Parameter Register B (Uartx_Wp7816B_T1)1257
  - UART 7816 Wait and Guard Parameter Register (Uartx_Wgp7816_T1)1258
  - UART 7816 Wait Parameter Register C (Uartx_Wp7816C_T1)1258
- Functional Description1259
  - Transmitter1259
  - Receiver1265
  - Baud Rate Generation1279
  - Data Format (Non ISO-7816)1281
  - Single-Wire Operation1284
  - Loop Operation1285
  - ISO-7816/Smartcard Support1285
  - Infrared Interface1291
- Reset1292
- System Level Interrupt Sources1292
  - RXEDGIF Description1292
- DMA Operation1293
- Application Information1294
  - Transmit/Receive Data Buffer Operation1294
  - Initialization Sequence1294
  - Initialization Sequence (Non ISO-7816)1296
  - Overrun (OR) Flag Implications1297
  - Overrun NACK Considerations1298
  - Match Address Registers1299
  - Modem Feature1299
  - Irda Minimum Pulse Width1300
  - Clearing 7816 Wait Timer (WT, BWT, CWT) Interrupts1300
  - Legacy and Reverse Compatibility Considerations1301
Chapter 48 Low Power Universal Asynchronous Receiver/Transmitter (LPUART)1303
- Introduction1303
- Register Definition1306
- Functional Description1322
Chapter 49 Integrated Interchip Sound (I2S) / Synchronous Audio Interface (SAI)1337
- Introduction1337
- External Signals1339
- Memory Map and Register Definition1340
- Functional Description1364
- Introduction1375
  - Features1375
  - Modes of Operation1375
Chapter 50 General-Purpose Input/Output (GPIO)1376
- GPIO Signal Descriptions1376
- Memory Map and Register Definition1377
- Functional Description1382
  - General-Purpose Input1382
  - General-Purpose Output1382
Chapter 51 JTAG Controller (JTAGC)1383
- Introduction1383
- External Signal Description1386
- Register Description1387
- Functional Description1389
- Initialization/Application Information1394

NXP Semiconductors K22F series User Manual

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Brand	NXP Semiconductors
Model	K22F series
Category	Controller
Language	English