Philips LPC2129 - Table 84: UART0 Scratchpad Register (U0 SCR

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UART0 148 May 03, 2004

Philips Semiconductors Preliminary User Manual

LPC2119/2129/2194/2292/2294ARM-based Microcontroller

UART0 Scratch Pad Register (U0SCR - 0xE000C01C)

The U0SCR has no effect on the UART0 operation. This register can be written and/or read at user’s discretion. There is no

provision in the interrupt interface that would indicate to the host that a read or write of the U0SCR has occurred.

Table 85: UART0 Scratchpad Register (U0SCR - 0xE000C01C)

U0SCR Function Description

Reset

Value

7:0 - A readable, writable byte. 0

Main Page

Table of Contents3
List of Figures7
List of Tables9
Document Revision History14
Introduction16
General Description16
Features16
Applications17
Device Information17
Table 1: LPC2119/2129/2194/2292/2294 Device Information17
Architectural Overview18
ARM7TDMI-S Processor18
On-Chip Flash Memory System18
On-Chip Static RAM19
Block Diagram20
Figure 1: LPC2119/2129/2194/2292/2294 Block Diagram20
LPC2119/2129/2292/2194/2294 Registers21
Table 2: LPC2119/2129/2194/2292/2294 Registers22
LPC2119/2129/2292/2294 Memory Addressing48
Memory Maps48
Figure 2: System Memory Map48
Figure 3: Peripheral Memory Map49
Figure 4: AHB Peripheral Map50
Figure 5: VPB Peripheral Map51
LPC2119/2129/2194/2292/2294 Memory Re-Mapping and Boot Block52
Table 3: ARM Exception Vector Locations52
Table 4: LPC2119/2129/2194/2292/2294 Memory Mapping Modes52
Figure 6: Map of Lower Memory Is Showing Re-Mapped and Re-Mappable Areas (128 Kb Flash)54
Prefetch Abort and Data Abort Exceptions55
External Memory Controller (EMC)56
Features56
Description56
Table 5: Address Ranges of External Memory Banks (Lpc2292/2294Only)56
Pin Description57
Register Description57
Table 6: External Memory Controller Pin Description57
Table 7: External Memory Controller Register Map57
Table 8: Bank Configuration Registers 0-3 (BCFG0-3 - 0Xffe00000-0C)58
Table 9: Default Memory Widths at Reset58
External Memory Interface59
Figure 7: 32 Bit Bank External Memory Interfaces59
Figure 8: 16 Bit Bank External Memory Interfaces60
Figure 9: 8 Bit Bank External Memory Interface60
Typical Bus Sequences61
Figure 10: External Memory Read Access (WST1=0 and WST1=1 Examples)61
Figure 11: External Memory Write Access (WST2=0 and WST2=1 Examples)61
External Memory Selection62
Table 10: External Memory and System Requirements62
System Control Block64
Summary of System Control Block Functions64
Pin Description64
Table 11: Pin Summary64
Register Description66
Table 12: Summary of System Control Registers66
Crystal Oscillator67
Figure 12: Oscillator Modes and Models: A) Slave Mode of Operation, B) Oscillation Mode of Operation67
Table 13: Recommended Values for CX1/X2 in Oscillation Mode (Crystal and External Components Parameters)67
Figure 13: FOSC Selection Algorithm68
External Interrupt Inputs69
Table 14: External Interrupt Registers69
Table 15: External Interrupt Flag Register (EXTINT - 0Xe01Fc140)70
Table 16: External Interrupt Wakeup Register (EXTWAKE - 0Xe01Fc144)71
Table 17: External Interrupt Mode Register (EXTMODE - 0Xe01Fc148)71
Table 18: External Interrupt Polarity Register (EXTPOLAR - 0Xe01Fc14C)72
Figure 14: External Interrupt Logic73
Memory Mapping Control74
Table 19: MEMMAP Register74
Table 20: Memory Mapping Control Register (MEMMAP - 0Xe01Fc040)74
PLL (Phase Locked Loop)75
Table 21: PLL Registers75
Figure 15: PLL Block Diagram76
Table 22: PLL Control Register (PLLCON - 0Xe01Fc080)77
Table 23: PLL Configuration Register (PLLCFG - 0Xe01Fc084)77
Table 24: PLL Status Register (PLLSTAT - 0Xe01Fc088)78
Table 25: PLL Control Bit Combinations78
Table 26: PLL Feed Register (PLLFEED - 0Xe01Fc08C)79
Table 27: PLL Divider Values80
Table 28: PLL Multiplier Values80
Power Control81
Table 29: Power Control Registers81
Table 30: Power Control Register (PCON - 0Xe01Fc0C0)82
Table 31: Power Control for Peripherals Register for LPC2119/2129/2292 (PCONP - 0Xe01Fc0C4)82
Table 32: Power Control for Peripherals Register for LPC2194/2294 (PCONP - 0Xe01Fc0C4)83
Power Control Usage Notes84
Reset85
Figure 16: Reset Block Diagram Including Wakeup Timer85
VPB Divider86
Table 33: VPBDIV Register Map86
Table 34: VPB Divider Register (VPBDIV - 0Xe01Fc100)86
Figure 17: VPB Divider Connections87
Wakeup Timer88
Memory Accelerator Module (MAM)90
Introduction90
Figure 18: Simplified Block Diagram of the Memory Accelerator Module91
Memory Accelerator Module Operating Modes92
Table 35: MAM Responses to Program Accesses of Various Types92
Table 36: MAM Responses to Data and DMA Accesses of Various Types92
MAM Configuration93
Register Description93
Table 37: Summary of System Control Registers93
MAM Usage Notes94
Table 38: MAM Control Register (MAMCR - 0Xe01Fc000)94
Table 39: MAM Timing Register (MAMTIM - 0Xe01Fc004)94
Vectored Interrupt Controller (VIC)96
Features96
Description96
Register Description97
Table 40: VIC Register Map97
VIC Registers99
Table 41: Software Interrupt Register (Vicsoftint - 0Xfffff018, Read/Write)99
Table 42: Software Interrupt Clear Register (Vicsoftintclear - 0Xfffff01C, Write Only)99
Table 43: Raw Interrupt Status Register (Vicrawintr - 0Xfffff008, Read-Only)99
Table 44: Interrupt Enable Register (Vicintenable - 0Xfffff010, Read/Write)100
Table 45: Software Interrupt Clear Register (Vicintenclear - 0Xfffff014, Write Only)100
Table 46: Interrupt Select Register (Vicintselect - 0Xfffff00C, Read/Write)100
Table 47: IRQ Status Register (Vicirqstatus - 0Xfffff000, Read-Only)100
Table 48: IRQ Status Register (Vicfiqstatus - 0Xfffff004, Read-Only)101
Table 49: Vector Control Registers (Vicvectcntl0-15 - 0Xfffff200-23C, Read/Write)101
Table 50: Vector Address Registers (Vicvectaddr0-15 - 0Xfffff100-13C, Read/Write)101
Table 51: Default Vector Address Register (Vicdefvectaddr - 0Xfffff034, Read/Write)101
Table 52: Vector Address Register (Vicvectaddr - 0Xfffff030, Read/Write)102
Table 53: Protection Enable Register (Vicprotection - 0Xfffff020, Read/Write)102
Interrupt Sources103
Table 54: Connection of Interrupt Sources to the Vectored Interrupt Controller103
Figure 19: Block Diagram of the Vectored Interrupt Controller105
Spurious Interrupts106
VIC Usage Notes109
Pin Configuration110
LPC2119/2129/2194 Pinout110
Figure 20: LPC2119/2129/2194 64-Pin Package110
Pin Description for LPC2119/2129/2194111
Table 55: Pin Description for LPC2119/2129/2194111
LPC2292/2294 Pinout116
Figure 21: LPC2292/2294 144-Pin Package116
Pin Description for LPC2292/2294117
Table 56: Pin Description for LPC2292/2294117
Pin Connect Block126
Features126
Applications126
Description126
Register Description126
Table 57: Pin Connect Block Register Map126
Table 58: Pin Function Select Register 0 for LPC2119/2129/2292 (PINSEL0 - 0Xe002C000)127
Table 59: Pin Function Select Register 0 for LPC2194/2294 (PINSEL0 - 0Xe002C000)127
Table 60: Pin Function Select Register 1 for LPC2119/2129/2292 (PINSEL1 - 0Xe002C004)128
Table 61: Pin Function Select Register 1 for LPC2194/2294 (PINSEL1 - 0Xe002C004)129
Table 62: Pin Function Select Register 2 for LPC2119/2129/2194 (PINSEL2 - 0Xe002C014)129
Table 63: Pin Function Select Register 2 for LPC2292/2294 (PINSEL2 - 0Xe002C014)131
Table 64: Pin Function Select Register Bits132
Boot Control on 144-Pin Package133
Table 65: Boot Control on BOOT1:0133
Gpio134
Features134
Applications134
Pin Description134
Register Description134
Table 66: GPIO Pin Description134
Table 67: GPIO Register Map135
Table 68: GPIO Pin Value Register (IO0PIN - 0Xe0028000, IO1PIN - 0Xe0028010, IO2PIN - 0Xe0028020, IO3PIN - 0Xe0028030)136
Table 69: GPIO Output Set Register (IO0SET - 0Xe0028004, IO1SET - 0Xe0028014, IO2SET - 0Xe0028024, IO3SET - 0Xe0028034)136
GPIO Usage Notes137
Table 70: GPIO Output Clear Register (IO0CLR - 0Xe002800C, IO1CLR - 0Xe002801C, IO2CLR - 0Xe002802C, IO3CLR - 0Xe002803C)137
Table 71: GPIO Direction Register (IO0DIR - 0Xe0028008, IO1DIR - 0Xe0028018, IO2DIR - 0Xe0028028, IO3DIR - 0Xe0028038)137
10. Uart0140
Features140
Pin Description140
Table 72: UART0 Pin Description140
Register Description141
Table 73: UART0 Register Map141
Table 74: UART0 Receiver Buffer Register (U0RBR - 0Xe000C000 When DLAB = 0, Read Only)142
Table 75: UART0 Transmit Holding Register (U0THR - 0Xe000C000 When DLAB = 0, Write Only)142
Table 76: UART0 Divisor Latch LSB Register (U0DLL - 0Xe000C000 When DLAB = 1)142
Table 77: UART0 Divisor Latch MSB Register (U0DLM - 0Xe000C004 When DLAB = 1)142
Table 78: UART0 Interrupt Enable Register Bit Descriptions (U0IER - 0Xe000C004 When DLAB = 0)143
Table 79: UART0 Interrupt Identification Register Bit Descriptions (U0IIR - 0Xe000C008, Read Only)143
Table 80: UART0 Interrupt Handling144
Table 81: UART0 FIFO Control Register Bit Descriptions (U0FCR - 0Xe000C008)145
Table 82: UART0 Line Control Register Bit Descriptions (U0LCR - 0Xe000C00C)146
Table 83: UART0 Line Status Register Bit Descriptions (U0LSR - 0Xe000C014, Read Only)147
Table 84: UART0 Scratchpad Register (U0SCR - 0Xe000C01C)148
Architecture149
Figure 22: UART0 Block Diagram150
11. Uart1152
Features152
Pin Description152
Table 85: UART1 Pin Description152
Register Description153
Table 86: UART1 Register Map153
Table 87: UART1 Receiver Buffer Register (U1RBR - 0Xe0010000 When DLAB = 0, Read Only)154
Table 88: UART1 Transmit Holding Register (U1THR - 0Xe0010000 When DLAB = 0, Write Only)154
Table 89: UART1 Divisor Latch LSB Register (U1DLL - 0Xe0010000 When DLAB = 1)154
Table 90: UART1 Divisor Latch MSB Register (U1DLM - 0Xe0010004 When DLAB = 1)155
Table 91: UART1 Interrupt Enable Register Bit Descriptions (U1IER - 0Xe0010004 When DLAB = 0)155
Table 92: UART1 Interrupt Identification Register Bit Descriptions (IIR - 0Xe0010008, Read Only)156
Table 93: UART1 Interrupt Handling157
Table 94: UART1 FCR Bit Descriptions (U1FCR - 0Xe0010008)158
Table 95: UART1 Line Control Register Bit Descriptions (U1LCR - 0Xe001000C)159
Table 96: UART1 Modem Control Register Bit Descriptions (U1MCR - 0Xe0010010)160
Table 97: UART1 Line Status Register Bit Descriptions (U1LSR - 0Xe0010014, Read Only)161
Table 98: UART1 Modem Status Register Bit Descriptions (U1MSR - 0X0Xe0010018)162
Table 99: UART1 Scratchpad Register (U1SCR - 0Xe001001C)163
Architecture164
Figure 23: UART1 Block Diagram165
I2C Interface166
Features166
Applications166
Description166
Figure 24: I2C Bus Configuration167
Figure 25: Slave Mode Configuration167
Figure 26: Format in the Master Transmitter Mode168
Figure 27: Format of Master Receiver Mode168
Figure 28: a Master Receiver Switch to Master Transmitter after Sending Repeated START169
Figure 29: Slave Mode Configuration169
Pin Description170
Figure 30: Format of Slave Receiver Mode170
Figure 31: Format of Slave Transmitter Mode170
Table 100: I2C Pin Description170
Register Description171
Table 101: I2C Register Map171
Table 102: I2C Control Set Register (I2CONSET - 0Xe001C000)173
Table 103: I2C Control Clear Register (I2CONCLR - 0Xe001C018)173
Table 104: I2C Status Register (I2STAT - 0Xe001C004)174
Table 105: I2C Data Register (I2DAT - 0Xe001C008)174
Table 106: I2C Slave Address Register (I2ADR - 0Xe001C00C)174
Table 107: I2C SCL High Duty Cycle Register (I2SCLH - 0Xe001C010)175
Table 108: I2C SCL Low Duty Cycle Register (I2SCLL - 0Xe001C014)175
Table 109: I2C Clock Rate Selections for VPB Clock Divider = 1175
Table 110: I2C Clock Rate Selections for VPB Clock Divider = 2176
Table 111: I2C Clock Rate Selections for VPB Clock Divider = 4176
Architecture177
Figure 32: I2C Architecture177
SPI Interface178
Features178
Description178
Figure 33: SPI Data Transfer Format (CPHA = 0 and CPHA = 1)179
Table 112: SPI Data to Clock Phase Relationship179
Pin Description182
Table 113: SPI Pin Description182
Register Description183
Table 114: SPI Register Map183
Table 115: SPI Control Register (S0SPCR - 0Xe0020000, S1SPCR - 0Xe0030000)183
Table 116: SPI Status Register (S0SPSR - 0Xe0020004, S1SPSR - 0Xe0030004)184
Table 117: SPI Data Register (S0SPDR - 0Xe0020008, S1SPDR - 0Xe0030008)184
Table 118: SPI Clock Counter Register (S0SPCCR - 0Xe002000C, S1SPCCR - 0Xe003000C)184
Table 119: SPI Interrupt Register (S0SPINT - 0Xe002001C, S1SPINT - 0Xe003001C)185
Architecture186
Figure 34: SPI Block Diagram186
14. Can Controllers and Acceptance Filter188
CAN Controllers188
Features188
Pin Description189
Memory Map of the CAN Block189
CAN Controller Registers189
Table 120: CAN Pin Descriptions189
Table 121: Memory Map of the CAN Block189
Table 122: CAN Acceptance Filter and Central CAN Registers189
Table 123: CAN1, CAN2, CAN3 and CAN4 Controller Register Map190
Table 124: CAN Mode Register (CANMOD - 0Xe00X X000)192
Table 125: CAN Command Register (CANCMR - 0Xe00X X004)193
Table 126: CAN Global Status Register (CANGSR - 0Xe00X X008)194
Table 127: CAN Interrupt and Capture Register (CANICR - 0Xe00X X00C)195
Table 128: CAN Interrupt Enable Register (CANIER - 0Xe00X X010)196
Table 129: CAN Bus Timing Register (CANBTR - 0Xe00X X014)197
Table 130: CAN Error Warning Limit Register (CANEWL - 0Xe00X X018)197
Table 131: CAN Status Register (CANSR - 0Xe00X X01C)197
Table 132: CAN Rx Frame Status Register (CANRFS - 0Xe00X X020)199
Table 133: CAN Rx Identifier Register When FF=0 (CANRID - 0Xe00X X024)199
Table 134: CAN Rx Identifier Register When FF=1 (CANRID - 0Xe00X X024)199
Table 135: CAN Rx Data Register 1 (CANRDA - 0Xe00X X028)200
Table 136: CAN Rx Data Register B (CANRDB - 0Xe00X X02C)200
Table 137: CAN Tx Frame Information Register (CANTFI1, 2, 3 - 0Xe00X X030, 40, 50)201
Table 138: CAN Tx Identifier Register When FF=0 (CANTID1, 2, 3 - 0Xe00X X034, 44, 54)201
Table 139: CAN Tx Identifier Register When FF=1 (CANTID1, 2, 3 - 0Xe00X X034, 44, 54)201
CAN Controller Operation202
Table 140: CAN Tx Data Register a (CANTDA1, 2, 3 - 0Xe00X X038, 48, 58)202
Table 141: CAN Tx Data Register B (CANTDB1, 2, 3 - 0Xe00X X03C, 4C, 5C)202
Centralized CAN Registers204
Table 142: CAN Central Transmit Status Register (Cantxsr - 0Xe004 0000)204
Table 143: CAN Central Receive Status Register (Canrxsr - 0Xe004 0004)204
Global Acceptance Filter205
Figure 35: Entry in Fullcan and Individual Standard Identifier Tables205
Figure 36: Entry in Standard Identifier Range Table205
Table 144: CAN Central Miscellaneous Status Register (CANMSR - 0Xe004 0008)205
Figure 37: Entry in Either Extended Identifier Table206
Acceptance Filter Registers207
Table 145: Acceptance Filter Modes Register (AFMR - 0Xe003 C000)207
Table 146: Standard Frame Start Address Register (Sff_Sa - 0Xe003 C004)207
Table 147: Standard Frame Group Start Address Reg (Sff_Grp_Sa - 0Xe003 C008)207
Table 148: Extended Frame Start Address Register (Eff_Sa - 0Xe003 C00C)208
Table 149: Extended Frame Group Start Addr Register (Eff_Grp_Sa - 0Xe003 C010)208
Table 150: End of AF Tables Register (Endoftable - 0Xe003 C014)208
Table 151: LUT Error Address Register (Luterrad - 0Xe003 C018)208
Examples of Acceptance Filter Tables and ID Index Values209
Table 152: LUT Error Register (Luterr - 0Xe003 C01C)209
Table 153: Example of Acceptance Filter Tables and ID Index Values209
Fullcan Mode210
Figure 38: Detailed Example of Acceptance Filter Tables and ID Index Values210
Table 154: Format of Automatically Stored Rx Message211
15. Timer0 and Timer1214
Features214
Applications214
Description215
Pin Description215
Table 155: Pin Summary215
Register Description216
Table 156: TIMER0 and TIMER1 Register Map216
Table 159: Match Control Register (MCR: TIMER0 - T0MCR: 0Xe0004014; TIMER1 - T1MCR: 0Xe0008014)218
Table 160: Capture Control Register (CCR: TIMER0 - T0CCR: 0Xe0004028; TIMER1 - T1CCR: 0Xe0008028)219
Example Timer Operation221
Figure 39: a Timer Cycle in Which PR=2, Mrx=6, and both Interrupt and Reset on Match Are Enabled221
Figure 40: a Timer Cycle in Which PR=2, Mrx=6, and both Interrupt and Stop on Match Are Enabled221
Architecture222
Figure 41: Timer Block Diagram222
Table 157: Interrupt Register222
Table 158: Timer Control Register222
Pulse Width Modulator (PWM)224
Features224
Description224
Figure 42: PWM Block Diagram226
Figure 43: Sample PWM Waveforms227
Pin Description229
Register Description230
17. A/D Converter238
Features238
Description238
Pin Descriptions238
Register Description238
Operation240
18. Real Time Clock242
Features242
Description242
Architecture243
Register Description243
Figure 44: RTC Block Diagram243
RTC Interrupts245
Miscellaneous Register Group246
Consolidated Time Registers249
Time Counter Group251
Alarm Register Group252
RTC Usage Notes252
Reference Clock Divider (Prescaler)253
Figure 45: RTC Prescaler Block Diagram254
19. Watchdog256
Features256
Applications256
Description256
Register Description257
Usage Notes on Watchdog Reset and External Start259
Block Diagram261
Figure 46: Watchdog Block Diagram261
20. Flash Memory System and Programming262
Flash Memory System262
Flash Boot Loader262
Features262
Applications262
Description262
Figure 47: Map of Lower Memory after any Reset (128 Kb Flash Part)263
Boot Process Flowchart266
Figure 48: Boot Process Flowchart (Bootloader Revisions before 1.61)266
Figure 49: Boot Process Flowchart (Bootloader Revisions 1.61 and Later)267
Sector Numbers268
Code Read Protection269
Figure 50: IAP Parameter Passing281
Table 217: IAP Blank Check Sector(S) Command Description283
Table 218: IAP Read Part ID Command Description283
Table 219: IAP Read Boot Code Version Command Description283
Table 220: IAP Compare Command Description284
Table 221: IAP Status Codes Summary284
JTAG FLASH Programming Interface285
Embeddedice Logic286
Features286
Applications286
Description286
Pin Description287
Reset State of Multiplexed Pins287
Table 222: Embeddedice Pin Description287
Register Description288
Table 223: Embeddedice Logic Registers288
Block Diagram289
Figure 51: Embeddedice Debug Environment Block Diagram289
22. Embedded Trace Macrocell290
Features290
Applications290
Description290
Table 224: ETM Configuration290
Pin Description291
Reset State of Multiplexed Pins291
Table 225: ETM Pin Description291
Register Description292
Table 226: ETM Registers292
Block Diagram293
Figure 52: ETM Debug Environment Block Diagram293
23. Realmonitor294
Features294
Applications294
Description294
Figure 53: Realmonitor Components295
Figure 54: Realmonitor as a State Machine296
How to Enable Realmonitor298
Table 227: Realmonitor Stack Requirement298
Realmonitor Build Options304

Philips LPC2129 - Table 84: UART0 Scratchpad Register (U0 SCR - 0 Xe000 C01 C)

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