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NXP Semiconductors UM10237 Chapter 26: LPC24XX Real-Time Clock (RTC) and battery RAM

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1. Basic configuration

The RTC is configured using the following registers:

1. Power: In the PCONP register (Tab le 4– 63), set bits PCRTC.

Remark: On reset, the RTC is enabled. See Section 26–9 for power saving options.

2. Clock: Select clock source in Table 26–570. If the peripheral clock is selected, select

PCLK_RTC in the PCLK_SEL0 register (Table4–56). For the RTC, the peripheral

clock must be scaled (see Section 26–10).

3. Interrupts: See Section 26–6.1 for RTC interrupt handling. Interrupts are enabled in

the VIC using the VICIntEnable register (Section 7–3.4).

2. Features

•Measures the passage of time to maintain a calendar and clock.

•Ultra Low Power design to support battery powered systems.

•Provides Seconds, Minutes, Hours, Day of Month, Month, Year, Day of Week, and

Day of Year.

•Dedicated 32 kHz oscillator or programmable prescaler from APB clock.

•Dedicated power supply pin can be connected to a battery or to the main 3.3 V.

•An alarm output pin is included to assist in waking up from Power-down mode or

when the chip has had power removed to all functions except the RTC and Battery

RAM.

•Periodic interrupts can be generated from increments of any field of the time registers,

and selected fractional second values.

•2 kilobyte static RAM powered by VBAT.

•RTC and Battery RAM power supply is isolated from the rest of the chip.

3. Description

The Real-Time Clock (RTC) is a set of counters for measuring time when system power is

on, and optionally when it is off. It uses little power in power down mode. On the

LPC2400, the RTC can be clocked by a separate 32.768 KHz oscillator or by a

programmable prescale divider based on the APB clock. The RTC is powered by its own

power supply pin, VBAT , which can be conn ected to a batter y or to the same 3 .3V supply

used by the rest of the device.

The VBAT pin supplies power only to the RTC and the Battery RAM. These two functions

require a minimum of power to operate, which can be supplied by an external battery.

When the CPU and the rest of chip functions are stopped and power removed, the RTC

can supply an alarm output that can be used by external hardware to restore chip power

UM10237

Chapter 26: LPC24XX Real-Time Clock (RTC) and battery RAM

Rev. 02 — 19 December 2008 User manual

Contents

Main UM10237 LPC24XX User manual Rev. 02 19 December 2008 User manual Contact information 1. Introduction 2. How to read this manual UM10237 Chapter 1: LPC24XX Introductory information 3. LPC2400 features Page functions. 5. Ordering options 5.1 LPC2458 ordering options 5.2 LPC2460 ordering options NXP Semiconductors UM10237 5.3 LPC2468 ordering options 5.4 LPC2470 ordering options 5.5 LPC2478 ordering options 6. Architectural overview 7. On-chip flash programming memory (LPC2458/68/78) NXP Semiconductors UM10237 8. On-chip SRAM 9. LPC2458 block diagram Fig 1. LPC2458 block diagram LPC2458 10. LPC2420/60 block diagram (1) LPC2460 only. Fig 2. LPC2460 block diagram LPC2420/2460 11. LPC2468 block diagram Fig 3. LPC2468 block diagram LPC2468 12. LPC2470 block diagram Fig 4. LPC2470 block diagram LPC2470 13. LPC2478 block diagram Fig 5. LPC2478 block diagram LPC2478 2. Memory map and peripheral addressing Chapter 2: LPC24XX Memory mapping Page 3. Memory maps User manual Rev. 02 19 December 2008 19 of 792 Fig 6. LPC2400 system memory map Page (1) LPC247x only. Fig 8. AHB peripheral map 4. APB peripheral addresses NXP Semiconductors UM10237 5. LPC2400 memory re-mapping and boot ROM 5.1 Memory map concepts and operating modes 5.2 Memory re-mapping 6. Memory mapping control 6.1 Memory Mapping Control Register (MEMMAP - 0xE01F C040) 6.2 Memory mapping control usage notes Fig 9. Map of lower memory is showing re-mapped and re-mappable areas for a LPC2400 part with flash 7. Prefetch abort and data abort exceptions 1. Summary of system control block functions 2. Pin description Chapter 3: LPC24XX System control 3.1 External interrupt inputs 3.1.1 Register description 3.1.2 External Interrupt flag register (EXTINT - 0xE01F C140) Page 3.1.3 External Interrupt Mode register (EXTMODE - 0xE01F C148) 3.1.4 External Interrupt Polarity register (EXTPOLAR - 0xE01F C14C) 3.2 Reset Page 3.2.1 Reset Source Identification Register (RSIR - 0xE01F C180) 3.3 Other system controls and status flags 3.3.1 System Controls and Status register (SCS - 0xE01F C1A0) 3.4 AHB Configuration 3.4.1 AHB Arbiter Configuration register 1 (AHBCFG1 - 0xE01F C188) NXP Semiconductors UM10237 3.4.2 AHB Arbiter Configuration register 2 (AHBCFG2 - 0xE01F C18C) 3.4.2.1 Examples of AHB2 settings 4. Brown-out detection 5. Code security vs. debugging 1. Summary of clocking and power control functions Chapter 4: LPC24XX Clocking and power control Fig 12. Clock generation for the LPC2400 ARM7 TDMI-S 2. Oscillators 2.1 Internal RC oscillator 2.2 Main oscillator Page 2.3 RTC oscillator 3.1 Clock source selection multiplexer 3.1.1 Clock Source Select register (CLKSRCSEL - 0xE01F C10C) 3.2 PLL (Phase Locked Loop) 3.2.1 PLL operation 3.2.2 PLL and startup/boot code interaction 3.2.3 PLL register description 3.2.4 PLL Control register (PLLCON - 0xE01F C080) 3.2.5 PLL Configuration register (PLLCFG - 0xE01F C084) Page 3.2.6 PLL Status register (PLLSTAT - 0xE01FC088) 3.2.7 PLL Interrupt: PLOCK 3.2.8 PLL Modes 3.2.9 PLL Feed register (PLLFEED - 0xE01F C08C) 3.2.10 PLL and Power-down mode 3.2.11 PLL frequency calculation 3.2.12 Procedure for determining PLL settings 3.2.13 Examples of PLL settings 3.2.14 PLL setup sequence 3.3 Clock dividers 3.3.1 CPU Clock Configuration register (CCLKCFG - 0xE01F C104) 3.3.2 USB Clock Configuration register (USBCLKCFG - 0xE01F C108) 3.3.3 IRC Trim Register (IRCTRIM - 0xE01F C1A4) Page 3.4 Power control 3.4.1 Idle mode 3.4.2 Sleep mode 3.4.3 Power-down mode 3.4.4 Peripheral power control 3.4.5 Power control register description The Power Control function uses registers shown in Table459. More detailed descriptions follow. 3.4.6 Power Mode Control register (PCON - 0xE01F C0C0) Reduced power modes are controlled via the PCON register, as described in Table 4 60 . 3.4.7 Interrupt Wakeup Register (INTWAKE - 0xE01F C144) 3.4.8 Power Control for Peripherals register (PCONP - 0xE01F C0C4) Page 3.4.9 Power control usage notes 4. Power domains 5. Wakeup timer Page Chapter 5: LPC24XX External Memory Controller (EMC) 5. EMC functional description 5.1 AHB slave register interface 5.2 AHB slave memory interface 5.2.1 Memory transaction endianness 5.2.2 Memory transaction size 5.2.3 Write protected memory areas 5.3 Pad interface 6. Low-power operation 6.1 Low-power SDRAM Deep-sleep Mode 6.2 Low-power SDRAM partial array refresh 7. Memory bank select 8. Reset 9. Pin description 10. Register description Page 10.1 EMC Control register (EMCControl - 0xFFE0 8000) 10.2 EMC Status register (EMCStatus - 0xFFE0 8004) 10.3 EMC Configuration register (EMCConfig - 0xFFE0 8008) 10.4 Dynamic Memory Control register (EMCDynamicControl - 0xFFE0 8020) Page 10.5 Dynamic Memory Refresh Timer register (EMCDynamicRefresh - 0xFFE0 8024) 10.6 Dynamic Memory Read Configuration register (EMCDynamicReadConfig - 0xFFE0 8028) 10.7 Dynamic Memory Percentage Command Period register (EMCDynamictRP - 0xFFE0 8030) 10.8 Dynamic Memory Active to Precharge Command Period register (EMCDynamictRAS - 0xFFE0 8034) 10.9 Dynamic Memory Self-refresh Exit Time register (EMCDynamictSREX - 0xFFE0 8038) 10.10 Dynamic Memory Last Data Out to Active Time register (EMCDynamictAPR - 0xFFE0 803C) 10.11 Dynamic Memory Data-in to Active Command Time register (EMCDynamictDAL - 0xFFE0 8040) 10.12 Dynamic Memory Write Recovery Time register (EMCDynamictWR - 0xFFE0 8044) 10.13 Dynamic Memory Active to Active Command Period register (EMCDynamictRC - 0xFFE0 8048) 10.14 Dynamic Memory Auto-refresh Period register (EMCDynamictRFC - 0xFFE0 804C) 10.15 Dynamic Memory Exit Self-refresh register (EMCDynamictXSR - 0xFFE0 8050) 10.16 Dynamic Memory Active Bank A to Active Bank B Time register (EMCDynamictRRD - 0xFFE0 8054) 10.17 Dynamic Memory Load Mode register to Active Command Time (EMCDynamictMRD - 0xFFE0 8058) 10.18 Static Memory Extended Wait register (EMCStaticExtendedWait - 0xFFE0 8080) 10.19 Dynamic Memory Configuration registers (EMCDynamicConfig0-3 - 0xFFE0 8100, 120, 140, 160) Address mappings that are not shown in Table 587 are reserved. Page Page 10.21 Static Memory Configuration registers (EMCStaticConfig0-3 - 0xFFE0 8200, 220, 240, 260) 10.22 Static Memory Write Enable Delay registers (EMCStaticWaitWen0-3 - 0xFFE0 8204, 224, 244 ,264) 10.24 Static Memory Read Delay registers (EMCStaticWaitRd0-3 - 0xFFE0 820C, 22C, 24C, 26C) 10.26 Static Memory Write Delay registers (EMCStaticWaitwr0-3 - 0xFFE0 8214, 234, 254, 274) 10.27 Static Memory Turn Round Delay registers (EMCStaticWaitTurn0-3 - 0xFFE0 8218, 238, 258, 278) 11. External memory interface 11.1 32-bit wide memory bank connection a. 32 bit wide memory bank interfaced to four 8 bit memory chips b. 32 bit wide memory bank interfaced to two 16 bit memory chips 11.2 16-bit wide memory bank connection a. 16 bit wide memory bank interfaced to two 8 bit memory chips 11.3 8-bit wide memory bank connection Fig 18. 8 bit bank external memory interface (bits MW = 00) 11.4 Memory configuration example Fig 19. Typical memory configuration diagram 3. Operation Chapter 6: LPC24XX Memory Accelerator Module (MAM) 4. Memory Acceleration Module blocks NXP Semiconductors UM10237 4.2 Instruction latches and data latches 4.3 Flash programming Issues 5. Memory Accelerator Module operating modes 6. MAM configuration 7.1 MAM Control Register (MAMCR - 0xE01F C000) 7.2 MAM Timing Register (MAMTIM - 0xE01F C004) Chapter 6: LPC24XX Memory Accelerator Module (MAM) 8. MAM usage notes Chapter 6: LPC24XX Memory Accelerator Module (MAM) 2. Description Chapter 7: LPC24XX Vectored Interrupt Controller (VIC) Page Page 3.1 Software Interrupt Register (VICSoftInt - 0xFFFF F018) 3.2 Software Interrupt Clear Register (VICSoftIntClear - 0xFFFF F01C) 3.3 Raw Interrupt Status Register (VICRawIntr - 0xFFFF F008) 3.4 Interrupt Enable Register (VICIntEnable - 0xFFFF F010) 3.5 Interrupt Enable Clear Register (VICIntEnClear - 0xFFFF F014) 3.6 Interrupt Select Register (VICIntSelect - 0xFFFF F00C) 3.7 IRQ Status Register (VICIRQStatus - 0xFFFF F000) 3.8 FIQ Status Register (VICFIQStatus - 0xFFFF F004) 3.9 Vector Address Registers 0-31 (VICVectAddr0-31 - 0xFFFF F100 to 17C) 3.10 Vector Priority Registers 0-31 (VICVectPriority0-31 - 0xFFFF F200 to 27C) 3.11 Vector Address Register (VICAddress - 0xFFFF FF00) 3.12 Software Priority Mask Register (VICSWPriorityMask - 0xFFFF F024) 3.13 Protection Enable Register (VICProtection - 0xFFFF F020) 4. Interrupt sources Page Page Fig 22. Block diagram of the Vectored Interrupt Controller 2. LPC2400 pin packages 2.1 LPC2400 180-pin package Chapter 8: LPC24XX Pin configuration 2.2 LPC2400 208-pin packages 3. LPC2458 pinning information Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page 4. LPC2460/68 pinning information Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page 5. LPC2470/78 pinning information Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page 6. LPC2460/70 boot control Page 2. Description Chapter 9: LPC24XX Pin connect 3. Pin function select register values 4. Pin mode select register values 5.1 Pin Function Select register 0 (PINSEL0 - 0xE002 C000) 5.2 Pin Function Select Register 1 (PINSEL1 - 0xE002 C004) 5.3 Pin Function Select register 2 (PINSEL2 - 0xE002 C008) 5.4 Pin Function Select Register 3 (PINSEL3 - 0xE002 C00C) 5.5 Pin Function Select Register 4 (PINSEL4 - 0xE002 C010) Page 5.6 Pin Function Select Register 5 (PINSEL5 - 0xE002 C014) Page 5.7 Pin Function Select Register 6 (PINSEL6 - 0xE002 C018) 5.8 Pin Function Select Register 7 (PINSEL7 - 0xE002 C01C) 5.9 Pin Function Select Register 8 (PINSEL8 - 0xE002 C020) 5.10 Pin Function Select Register 9 (PINSEL9 - 0xE002 C024) 5.11 Pin Function Select Register 10 (PINSEL10 - 0xE002 C028) 5.12 Pin Function Select Register 11 (PINSEL11 - 0xE002 C02C) This register is used to select the LCD function and the LCD mode on the LPC247x. 5.13 Pin Mode select register 0 (PINMODE0 - 0xE002 C040) This register controls pull-up/pull-down resistor configuration for PORT0 pins 0 to 15. 5.14 Pin Mode select register 1 (PINMODE1 - 0xE002 C044) 5.15 Pin Mode select register 2 (PINMODE2 - 0xE002 C048) 5.16 Pin Mode select register 3 (PINMODE3 - 0xE002 C04C) 5.17 Pin Mode select register 4 (PINMODE4 - 0xE002 C050) 5.18 Pin Mode select register 5 (PINMODE5 - 0xE002 C054) 5.19 Pin Mode select register 6 (PINMODE6 - 0xE002 C058) 5.20 Pin Mode select register 7 (PINMODE7 - 0xE002 C05C) 5.21 Pin Mode select register 8 (PINMODE8 - 0xE002 C060) 5.22 Pin Mode select register 9 (PINMODE9 - 0xE002 C064) 3.1 Digital I/O ports Chapter 10: LPC24XX General Purpose Input/Output (GPIO) Page Page Page Page Page Page Page Page Page Page 6.5 Fast GPIO port Mask register FIOMASK(FIO[0/1/2/3/4]MASK - 0x3FFF C0[1/3/5/7/9]0) Page 6.6 GPIO interrupt registers The following registers configure the pins of port 0 and port 2 to generate interrupts. 6.6.1 GPIO overall Interrupt Status register (IOIntStatus - 0xE002 8080) Each bit in these read-write registers enables the rising edge interrupt for the Each bit in these read-write registers enables the falling edge interrupt for the 6.6.6 GPIO Interrupt Clear register (IO0IntClr - 0xE002 808C and IO2IntClr - 0xE002 80AC) Writing a 1 into each bit in these write-only registers clears any interrupts for the 7. GPIO usage notes 7.1 Example 1: sequential accesses to IOSET and IOCLR affecting the same GPIO pin/bit 7.2 Example 2: an instantaneous output of 0s and 1s on a GPIO port 7.3 Writing to IOSET/IOCLR vs. IOPIN 7.4 Output signal frequency considerations when using the legacy and enhanced GPIO registers Chapter 11: LPC24XX Ethernet Page 5. Ethernet architecture 5.1 Partitioning 5.2 Example PHY Devices 5.3 DMA engine functions 5.4 Overview of DMA operation 5.5 Ethernet Packet 6. Pin description Fig 27. Ethernet packet fields Page Page 7.1 Ethernet MAC register definitions This section defines the bits in the individual registers of the Ethernet block register map. 7.1.1 MAC Configuration Register 1 (MAC1 - 0xFFE0 0000) 7.1.2 MAC Configuration Register 2 (MAC2 - 0xFFE0 0004) Page 7.1.3 Back-to-Back Inter-Packet-Gap Register (IPGT - 0xFFE0 0008) 7.1.4 Non Back-to-Back Inter-Packet-Gap Register (IPGR - 0xFFE0 000C) 7.1.5 Collision Window / Retry Register (CLRT - 0xFFE0 0010) 7.1.6 Maximum Frame Register (MAXF - 0xFFE0 0014) 7.1.7 PHY Support Register (SUPP - 0xFFE0 0018) Unused bits in the PHY support register should be left as zeroes. 7.1.8 Test Register (TEST - 0xFFE0 001C) 7.1.9 MII Mgmt Configuration Register (MCFG - 0xFFE0 0020) 7.1.10 MII Mgmt Command Register (MCMD - 0xFFE0 0024) 7.1.11 MII Mgmt Address Register (MADR - 0xFFE0 0028) 7.1.12 MII Mgmt Write Data Register (MWTD - 0xFFE0 002C) 7.1.13 MII Mgmt Read Data Register (MRDD - 0xFFE0 0030) 7.1.14 MII Mgmt Indicators Register (MIND - 0xFFE0 0034) 7.1.15 Station Address 0 Register (SA0 - 0xFFE0 0040) 7.1.16 Station Address 1 Register (SA1 - 0xFFE0 0044) 7.1.17 Station Address 2 Register (SA2 - 0xFFE0 0048) 7.2 Control register definitions 7.2.1 Command Register (Command - 0xFFE0 0100) 7.2.2 Status Register (Status - 0xFFE0 0104) 7.2.3 Receive Descriptor Base Address Register (RxDescriptor - 0xFFE0 0108) 7.2.4 Receive Status Base Address Register (RxStatus - 0xFFE0 010C) 7.2.5 Receive Number of Descriptors Register (RxDescriptor - 0xFFE0 0110) 7.2.6 Receive Produce Index Register (RxProduceIndex - 0xFFE0 0114) 7.2.7 Receive Consume Index Register (RxConsumeIndex - 0xFFE0 0118) 7.2.8 Transmit Descriptor Base Address Register (TxDescriptor - 0xFFE0 011C) 7.2.9 Transmit Status Base Address Register (TxStatus - 0xFFE00120) 7.2.10 Transmit Number of Descriptors Register (TxDescriptorNumber - 0xFFE0 0124) 7.2.11 Transmit Produce Index Register (TxProduceIndex - 0xFFE0 0128) 7.2.12 Transmit Consume Index Register (TxConsumeIndex - 0xFFE0 012C) 7.2.13 Transmit Status Vector 0 Register (TSV0 - 0xFFE00158) 7.2.14 Transmit Status Vector 1 Register (TSV1 - 0xFFE0015C) 7.2.15 Receive Status Vector Register (RSV - 0xFFE0 0160) Table11220 lists the bit definitions of the RSV register. 7.2.16 Flow Control Counter Register (FlowControlCounter - 0xFFE0 0170) 7.2.17 Flow Control Status Register (FlowControlStatus - 0xFFE0 0174) 7.3 Receive filter register definitions 7.3.1 Receive Filter Control Register (RxFilterCtrl - 0xFFE0 0200) 7.3.2 Receive Filter WoL Status Register (RxFilterWoLStatus - 0xFFE00204) 7.3.3 Receive Filter WoL Clear Register (RxFilterWoLClear - 0xFFE0 0208) NXP Semiconductors UM10237 7.3.4 Hash Filter Table LSBs Register (HashFilterL - 0xFFE0 0210) 7.3.5 Hash Filter Table MSBs Register (HashFilterH - 0xFFE0 0214) 7.4 Module control register definitions 7.4.1 Interrupt Status Register (IntStatus - 0xFFE0 0FE0) 7.4.2 Interrupt Enable Register (IntEnable - 0xFFE0 0FE4) 7.4.3 Interrupt Clear Register (IntClear - 0xFFE0 0FE8) 7.4.4 Interrupt Set Register (IntSet - 0xFFE0 0FEC) 7.4.5 Power Down Register (PowerDown - 0xFFE0 0FF4) 8. Descriptor and status formats 8.1 Receive descriptors and statuses Page Page Page 8.2 Transmit descriptors and statuses Page 9. Ethernet block functional description 9.1 Overview 9.2 AHB interface 9.3 Interrupts 9.4 Direct Memory Access (DMA) Page Page 9.5 Initialization 9.6 Transmit process Page Page Page Page Page 9.7 Receive process Page Page Page Page Page 9.8 Transmission retry 9.9 Status hash CRC calculations 9.10 Duplex modes 9.11 IEE 802.3/Clause 31 flow control Page 9.12 Half-Duplex mode backpressure 9.13 Receive filtering Page 9.14 Power management 9.15 Wake-up on LAN 9.16 Enabling and disabling receive and transmit Page 9.17 Transmission padding and CRC 9.18 Huge frames and frame length checking 9.19 Statistics counters 9.20 MAC status vectors Page Page Page 9.23.2 Types of CPU access 9.23.3 Overall bandwidth 9.24 CRC calculation Page Chapter 12: LPC24XX LCD controller Page Page 4.6 Monochrome STN panels 5.1 Signal usage 5.1.1 Signals used for single panel STN displays 5.1.2 Signals used for dual panel STN displays 5.1.3 Signals used for TFT displays The signals used for TFT displays are shown in Table 12245. 6. LCD controller functional description Fig 36. LCD controller block diagram Page Page Page Table12249 shows the structure of the data in each DMA FIFO word in RGB mode. 6.4 RAM palette 6.5 Hardware cursor 6.5.1 Cursor operation 6.5.2 Cursor sizes 6.5.3 Cursor movement 6.5.4 Cursor XY positioning 6.5.5 Cursor clipping 6.5.6 Cursor image format Table12255 shows the buffer to pixel mapping for Cursor 0. 6.6 Gray scaler 6.7 Upper and lower panel formatters 6.8 Panel clock generator 6.9 Timing controller 6.10 STN and TFT data select 6.10.1 STN displays 6.10.2 TFT displays 6.11.1 Master bus error interrupt 6.11.2 Vertical compare interrupt Page 7.1 LCD Configuration register (LCD_CFG, RW - 0xE01F C1B8) 7.2 Horizontal Timing register (LCD_TIMH, RW - 0xFFE1 0000) 7.2.1 Horizontal timing restrictions 7.3 Vertical Timing register (LCD_TIMV, RW - 0xFFE1 0004) 7.4 Clock and Signal Polarity register (LCD_POL, RW - 0xFFE1 0008) Page 7.5 Line End Control register (LCD_LE, RW - 0xFFE1 000C) 7.6 Upper Panel Frame Base Address register (LCD_UPBASE, RW - 0xFFE1 0010) 7.7 Lower Panel Frame Base Address register (LCD_LPBASE, RW - 0xFFE1 0014) 7.8 LCD Control register (LCD_CTRL, RW - 0xFFE1 0018) Page 7.9 Interrupt Mask register (LCD_INTMSK, RW - 0xFFE1 001C) 7.10 Raw Interrupt Status register (LCD_INTRAW, RW - 0xFFE1 0020) 7.11 Masked Interrupt Status register (LCD_INTSTAT, RW - 0xFFE1 0024) 7.12 Interrupt Clear register (LCD_INTCLR, RW - 0xFFE1 0028) 7.13 Upper Panel Current Address register (LCD_UPCURR, RW - 0xFFE1 002C) 7.14 Lower Panel Current Address register (LCD_LPCURR, RW - 0xFFE1 0030) 7.15 Color Palette registers (LCD_PAL, RW - 0xFFE1 0200 to 0xFFE1 03FC) 7.16 Cursor Image registers (CRSR_IMG, RW - 0xFFE1 0800 to 0xFFE1 0BFC) 7.17 Cursor Control register (CRSR_CTRL, RW - 0xFFE1 0C00) 7.18 Cursor Configuration register (CRSR_CFG, RW - 0xFFE1 0C04) 7.19 Cursor Palette register 0 (CRSR_PAL0, RW - 0xFFE1 0C08) 7.20 Cursor Palette register 1 (CRSR_PAL1, RW - 0xFFE1 0C0C) 7.21 Cursor XY Position register (CRSR_XY, RW - 0xFFE1 0C10) 7.22 Cursor Clip Position register (CRSR_CLIP, RW - 0xFFE1 0C14) 7.23 Cursor Interrupt Mask register (CRSR_INTMSK, RW - 0xFFE1 0C20) 7.24 Cursor Interrupt Clear register (CRSR_INTCLR, RW - 0xFFE1 0C24) 7.25 Cursor Raw Interrupt Status register (CRSR_INTRAW, RW - 0xFFE1 0C28) 7.26 Cursor Masked Interrupt Status register (CRSR_INTSTAT, RW - 0xFFE1 0C2C) 8. LCD timing diagrams Fig 41. Horizontal timing for STN displays (1) Signal polarities may vary for some displays. Fig 42. Vertical timing for STN displays Fig 43. Horizontol timing for TFT displays 9. LCD panel signal usage Page Page Page Chapter 13: LPC24XX USB device controller 4. Fixed endpoint configuration 5. Functional description The architecture of the USB device controller is shown below in Figure 1345. 5.1 Analog transceiver 5.2 Serial Interface Engine (SIE) 5.3 Endpoint RAM (EP_RAM) 5.4 EP_RAM access control 5.5 DMA engine and bus master interface 6. Operational overview 7. Pin description 7.1 USB device usage note 8. Clocking and power management 8.1 Power requirements 8.2 Clocks 8.3 Power management support 8.4 Remote wake-up 9. Register description 9.1 Port select register 9.1.1 USB Port Select register (USBPortSel - 0xFFE0 C110) 9.2 Clock control registers 9.2.1 USB Clock Control register (USBClkCtrl - 0xFFE0 CFF4) 9.2.2 USB Clock Status register (USBClkSt - 0xFFE0 CFF8) 9.3 Device interrupt registers 9.3.1 USB Interrupt Status register (USBIntSt - 0xE01F C1C0) 9.3.2 USB Device Interrupt Status register (USBDevIntSt - 0xFFE0 C200) 9.3.3 USB Device Interrupt Enable register (USBDevIntEn - 0xFFE0 C204) 9.3.4 USB Device Interrupt Clear register (USBDevIntClr - 0xFFE0 C208) 9.3.5 USB Device Interrupt Set register (USBDevIntSet - 0xFFE0 C20C) 9.3.6 USB Device Interrupt Priority register (USBDevIntPri - 0xFFE0 C22C) 9.4 Endpoint interrupt registers 9.4.1 USB Endpoint Interrupt Status register (USBEpIntSt - 0xFFE0 C230) 9.4.2 USB Endpoint Interrupt Enable register (USBEpIntEn - 0xFFE0 C234) 9.4.3 USB Endpoint Interrupt Clear register (USBEpIntClr - 0xFFE0 C238) 9.4.4 USB Endpoint Interrupt Set register (USBEpIntSet - 0xFFE0 C23C) 9.4.5 USB Endpoint Interrupt Priority register (USBEpIntPri - 0xFFE0 C240) 9.5 Endpoint realization registers 9.5.1 EP RAM requirements 9.5.2 USB Realize Endpoint register (USBReEp - 0xFFE0 C244) 9.5.3 USB Endpoint Index register (USBEpIn - 0xFFE0 C248) 9.5.4 USB MaxPacketSize register (USBMaxPSize - 0xFFE0 C24C) 9.6 USB transfer registers 9.6.1 USB Receive Data register (USBRxData - 0xFFE0 C218) 9.6.2 USB Receive Packet Length register (USBRxPLen - 0xFFE0 C220) 9.6.3 USB Transmit Data register (USBTxData - 0xFFE0 C21C) 9.6.4 USB Transmit Packet Length register (USBTxPLen - 0xFFE0 C224) 9.6.5 USB Control register (USBCtrl - 0xFFE0 C228) 9.7 SIE command code registers 9.7.1 USB Command Code register (USBCmdCode - 0xFFE0 C210) 9.7.2 USB Command Data register (USBCmdData - 0xFFE0 C214) 9.8 DMA registers 9.8.1 USB DMA Request Status register (USBDMARSt - 0xFFE0 C250) 9.8.2 USB DMA Request Clear register (USBDMARClr - 0xFFE0 C254) 9.8.3 USB DMA Request Set register (USBDMARSet - 0xFFE0 C258) 9.8.4 USB UDCA Head register (USBUDCAH - 0xFFE0 C280) 9.8.5 USB EP DMA Status register (USBEpDMASt - 0xFFE0 C284) 9.8.6 USB EP DMA Enable register (USBEpDMAEn - 0xFFE0 C288) 9.8.7 USB EP DMA Disable register (USBEpDMADis - 0xFFE0 C28C) 9.8.8 USB DMA Interrupt Status register (USBDMAIntSt - 0xFFE0 C290) 9.8.9 USB DMA Interrupt Enable register (USBDMAIntEn - 0xFFE0 C294) 9.8.10 USB End of Transfer Interrupt Status register (USBEoTIntSt - 0xFFE0 C2A0) Page Page 9.8.18 USB System Error Interrupt Set register (USBSysErrIntSet - 0xFFE0 C2C0) 10. Interrupt handling Page For simplicity, USBDevIntEn and USBDMAIntEn are not shown. Fig 47. Interrupt event handling 11. Serial interface engine command description 11.1 Set Address (Command: 0xD0, Data: write 1 byte) 11.2 Configure Device (Command: 0xD8, Data: write 1 byte) 11.3 Set Mode (Command: 0xF3, Data: write 1 byte) 11.4 Read Current Frame Number (Command: 0xF5, Data: read 1 or 2 bytes) 11.5 Read Test Register (Command: 0xFD, Data: read 2 bytes) 11.6 Set Device Status (Command: 0xFE, Data: write 1 byte) Page 11.9 Read Error Status (Command: 0xFB, Data: read 1 byte) 11.10 Select Endpoint (Command: 0x00 - 0x1F, Data: read 1 byte (optional)) 11.11 Select Endpoint/Clear Interrupt (Command: 0x40 - 0x5F, Data: read 1 byte) 11.12 Set Endpoint Status (Command: 0x40 - 0x55, Data: write 1 byte (optional)) 11.13 Clear Buffer (Command: 0xF2, Data: read 1 byte (optional)) 11.14 Validate Buffer (Command: 0xFA, Data: none) 12. USB device controller initialization 13. Slave mode operation 13.1 Interrupt generation 13.2 Data transfer for OUT endpoints 13.3 Data transfer for IN endpoints 14. DMA operation 14.1 Transfer terminology 14.2 USB device communication area 14.3 Triggering the DMA engine 14.4 The DMA descriptor 14.4.1 Next_DD_pointer 14.4.2 DMA_mode 14.4.3 Next_DD_valid 14.4.4 Isochronous_endpoint 14.4.5 Max_packet_size 14.4.10 Packet_valid 14.4.11 LS_byte_extracted 14.4.12 MS_byte_extracted 14.4.13 Present_DMA_count 14.5 Non-isochronous endpoint operation 14.5.1 Setting up DMA transfers 14.5.2 Finding DMA Descriptor 14.5.3 Transferring the data 14.5.4 Optimizing descriptor fetch 14.5.5 Ending the packet transfer 14.5.6 No_Packet DD 14.6 Isochronous endpoint operation 14.6.1 Setting up DMA transfers 14.6.2 Finding the DMA Descriptor 14.6.3 Transferring the Data 14.6.4 DMA descriptor completion 14.6.5 Isochronous OUT Endpoint Operation Example 14.7 Auto Length Transfer Extraction (ATLE) mode operation Fig 49. Isochronous OUT endpoint operation example Page 14.7.1 Setting up the DMA transfer 14.7.2 Finding the DMA Descriptor 14.7.3 Transferring the Data 14.7.4 Ending the packet transfer 15. Double buffered endpoint operation 15.1 Bulk endpoints Page 15.2 Isochronous endpoints 2.1 Features Chapter 14: LPC24XX USB Host controller 2.2 Architecture The architecture of the USB host controller is shown below in Figure 1451. 3. Interfaces 3.1 Pin description Fig 51. USB Host controller block diagram Table 359. USB OTG port pins Pin name Direction Description Pin category VBUS IV 3.2 Software interface 3.2.1 Register map Page 3.2.2 USB Host Register Definitions Refer to the OHCI specification document for register definitions. 4. Architecture Chapter 15: LPC24XX USB OTG controller 5. Modes of operation 6. Pin configuration 6.1 Connecting port U1 to an external OTG transceiver Fig 53. USB OTG port configuration: port U1 OTG Dual-Role device, port U2 host ISP1301 Fig 54. USB OTG port configuration: VP_VM mode LPC24XX ISP1301 6.2 Connecting USB as a two-port host Fig 55. USB OTG port configuration: port U2 host, port U1 host 6.3 Connecting USB as one port host and one port device Fig 56. USB OTG port configuration: port U1 host, port U2 device USBIntSt 0xE01F C1C0 R/W USB Interrupt Status OTG regi sters OTGIntSt 0xFFE0 C100 RO OTG Interrupt Status OTGIntEn 0xFFE0C104 R/W OTG Interrupt Enable 7.1 USB Interrupt Status Register (USBIntSt - 0xE01F C1C0) 7.2 OTG Interrupt Status Register (OTGIntSt - 0xE01F C100) 7.3 OTG Interrupt Enable Register (OTGIntEn - 0xFFE0 C104) 7.4 OTG Interrupt Set Register (OTGIntSet - 0xFFE0 C20C) 7.5 OTG Interrupt Clear Register (OTGIntClr - 0xFFE0 C10C) 7.6 OTG Status and Control Register (OTGStCtrl - 0xFFE0 C110) Page 7.7 OTG Timer Register (OTGTmr - 0xFFE0 C114) 7.8 OTG Clock Control Register (OTGClkCtrl - 0xFFE0 CFF4) 7.9 OTG Clock Status Register (OTGClkSt - 0xFFE0 CFF8) 7.10 I2C Receive Register (I2C_RX - 0xFFE0 C300) 7.11 I2C Transmit Register (I2C_TX - 0xFFE0 C300) 7.12 I2C Status Register (I2C_STS - 0xFFE0 C304) Page 7.13 I2C Control Register (I2C_CTL - 0xFFE0 C308) 7.14 I2C Clock High Register (I2C_CLKHI - 0xFFE0 C30C) 7.15 I2C Clock Low Register (I2C_CLKLO - 0xFFE0 C310) 7.16 Interrupt handling 8. HNP support 8.1 B-device: peripheral to host switching Fig 60. Hardware support for B-device switching from peripheral state to host state Page 8.2 A-device: host to peripheral HNP switching Fig 62. Hardware support for A-device switching from host state to peripheral state Page Page 9. Clocking and power management 9.1 Device clock request signals Fig 64. Clocking and power control 9.1.1 Host clock request signals 9.2 Power-down mode support 10. USB OTG controller initialization Page Chapter 16: LPC24XX Universal Asynchronous Receiver/Transmitter (UART) 0/2/3 Page Page Page Page The UnIER is used to enable the three UARTn interrupt sources. Page Page 4.7 UARTn Line Control Register (U0LCR - 0xE000 C00C, U2LCR - 0xE007 800C, U3LCR - 0xE007 C00C) The UnLSR is a read-only register that provides status information on the UARTn TX and RX blocks. Page 4.9 UARTn Scratch Pad Register (U0SCR - 0xE000 C01C, U2SCR - 0xE007 801C U3SCR - 0xE007 C01C) Page Page 4.11 IrDA Control Register for UART3 Only (U3ICR - 0xE007 C024) Page 4.12.1 Baudrate calculation Fig 66. Algorithm for setting UART dividers 4.13 UARTn Transmit Enable Register (U0TER - 0xE000 C030, U2TER - 0xE007 8030, U3TER - 0xE007 C030) 5. Architecture Fig 67. UART0, 2 and 3 block diagram Chapter 17: LPC24XX Universal Asynchronous Receiver/Transmitter (UART) 1 4. Register description Page Page 4.1 UART1 Receiver Buffer Register (U1RBR - 0xE001 0000, when DLAB = 0 Read Only) 4.2 UART1 Transmitter Holding Register (U1THR - 0xE001 0000 when DLAB = 0, Write Only) (3) 4.4 UART1 Interrupt Enable Register (U1IER - 0xE001 0004, when DLAB = 0) = -------------------------------------------------------------------------------- The U1IER is used to enable the four UART1 interrupt sources. UART1baudrate pclk 16 256 U1 DLMU1DLL+() 4.5 UART1 Interrupt Identification Register (U1IIR - 0xE001 0008, Read Only) Page Page 4.6 UART1 FIFO Control Register (U1FCR - 0xE001 0008, Write Only) The U1FCR controls the operation of the UART1 RX and TX FIFOs. 4.7 UART1 Line Control Register (U1LCR - 0xE001 000C) The U1LCR determines the format of the data character that is to be transmitted or received. 4.8 UART1 Modem Control Register (U1MCR - 0xE001 0010) The U1MCR enables the modem loopback mode and controls the modem output signals. 4.9 Auto-flow control Page 4.10 UART1 Line Status Register (U1LSR - 0xE001 0014, Read Only) The U1LSR is a read-only register that provides status information on the UART1 TX and RX blocks. 4.11 UART1 Modem Status Register (U1MSR - 0xE001 0018) 4.12 UART1 Scratch Pad Register (U1SCR - 0xE001 001C) 4.13 UART1 Auto-baud Control Register (U1ACR - 0xE001 0020) 4.14 Auto-baud 4.15 Auto-baud modes 4.16 UART1 Fractional Divider Register (U1FDR - 0xE001 0028) 4.16.1 Baudrate calculation Fig 71. Algorithm for setting UART dividers 4.17 UART1 Transmit Enable Register (U1TER - 0xE001 0030) 5. Architecture Fig 72. UART1 block diagram 3. CAN controllers Chapter 18: LPC24XX CAN controllers CAN1/2 Page 6. CAN controller architecture 6.1 APB Interface Block (AIB) 6.2 Interface Management Logic (IML) 6.3 Transmit Buffers (TXB) 6.4 Receive Buffer (RXB) 6.5 Error Management Logic (EML) 6.6 Bit Timing Logic (BTL) 6.7 Bit Stream Processor (BSP) 6.8 CAN controller self-tests Page 7. Memory map of the CAN block The CAN Controllers and Acceptance Filter occupy a number of APB slots, as follows: 8. Register description Page 8.1 Mode Register (CAN1MOD - 0xE004 4000, CAN2MOD - 0xE004 8000) 8.2 Command Register (CAN1CMR - 0xE004 x004, CAN2CMR - 0xE004 8004) Page 8.3 Global Status Register (CAN1GSR - 0xE004 x008, CAN2GSR - 0xE004 8008) Page 8.4 Interrupt and Capture Register (CAN1ICR - 0xE004 400C, CAN2ICR - 0xE004 800C) Page Page Page 8.5 Interrupt Enable Register (CAN1IER - 0xE004 4010, CAN2IER - 0xE004 8010) 8.6 Bus Timing Register (CAN1BTR - 0xE004 4014, CAN2BTR - 0xE004 8014) Page 8.7 Error Warning Limit Register (CAN1EWL - 0xE004 4018, CAN2EWL - 0xE004 8018) 8.8 Status Register (CAN1SR - 0xE004 401C, CAN2SR - 0xE004 801C) Page 8.9 Receive Frame Status Register (CAN1RFS - 0xE004 4020, CAN2RFS - 0xE004 8020) 8.9.1 ID index field 8.10 Receive Identifier Register (CAN1RID - 0xE004 4024, CAN2RID - 0xE004 8024) 8.11 Receive Data Register A (CAN1RDA - 0xE004 4028, CAN2RDA - 0xE004 8028) 8.12 Receive Data Register B (CAN1RDB - 0xE004 402C, CAN2RDB - 0xE004 802C) Page Page 9. CAN controller operation 9.1 Error handling 9.2 Sleep mode 9.3 Interrupts 9.4 Transmit priority 10. Centralized CAN registers 10.1 Central Transmit Status Register (CANTxSR - 0xE004 0000) 10.2 Central Receive Status Register (CANRxSR - 0xE004 0004) 10.3 Central Miscellaneous Status Register (CANMSR - 0xE004 0008) 11. Global acceptance filter 12. Acceptance filter modes 12.1 Acceptance filter Off mode 12.2 Acceptance filter Bypass mode 12.3 Acceptance filter Operating mode 13. Sections of the ID look-up table RAM 14. ID look-up table RAM Page 15. Acceptance filter registers 15.1 Acceptance Filter Mode Register (AFMR - 0xE003 C000) 15.2 Section configuration registers 15.3 Standard Frame Individual Start Address Register (SFF_sa - 0xE003 C004) 15.4 Standard Frame Group Start Address Register (SFF_GRP_sa - 0xE003 C008) 15.5 Extended Frame Start Address Register (EFF_sa - 0xE003 C00C) 15.6 Extended Frame Group Start Address Register (EFF_GRP_sa - 0xE003 C010) 15.7 End of AF Tables Register (ENDofTable - 0xE003 C014) 15.8 Status registers 15.9 LUT Error Address Register (LUTerrAd - 0xE003 C018) 15.10 LUT Error Register (LUTerr - 0xE003 C01C) 15.11 Global FullCANInterrupt Enable register (FCANIE - 0xE003 C020) 15.12 FullCAN Interrupt and Capture registers (FCANIC0 - 0xE003 C024 and FCANIC1 - 0xE003 C028) For detailed description on these two registers, see Section 1817.2 FullCAN interrupts. 16. Configuration and search algorithm 16.1 Acceptance filter search algorithm 17. FullCAN mode Fig 81. ID Look-up table example explaining the search algorithm Page 17.1 FullCAN message layout Fig 82. Semaphore procedure for reading an auto-stored message 17.2 FullCAN interrupts 17.2.1 FullCAN message interrupt enable bit 17.2.2 Message lost bit and CAN channel number Fig 83. FullCAN section example of the ID look-up table Fig 84. FullCAN message object layout CAN 17.2.3 Setting the interrupt pending bits (IntPnd 63 to 0) 17.3 Set and clear mechanism of the FullCAN interrupt 17.3.1 Scenario 1: Normal case, no message lost 17.3.2 Scenario 2: Message lost Fig 86. Message lost Fig 85. Normal case, no messages lost 17.3.3 Scenario 3: Message gets overwritten indicated by Semaphore bits 17.3.4 Scenario 3.1: Message gets overwritten indicated by Semaphore bits and Message Lost Fig 87. Message gets overwritten 17.3.5 Scenario 3.2: Message gets overwritten indicated by Message Lost This scenario is a sub-case to Scenario 3 in which the lost message is indicated by Message Lost. Fig 88. Message overwritten indicated by semaphore bits and message lost 17.3.6 Scenario 4: Clearing Message Lost bit Fig 89. Message overwritten indicated by message lost 18. Examples of acceptance filter tables and ID index values 18.1 Example 1: only one section is used 18.2 Example 2: all sections are used 18.3 Example 3: more than one but not all sections are used Fig 90. Clearing message lost 18.4 Configuration example 4 18.5 Configuration example 5 18.6 Configuration example 6 Fig 91. Detailed example of acceptance filter tables and ID index values Page 18.7 Configuration example 7 Fig 92. ID Look-up table configuration example (no FullCAN) Table 458. Use d ID -Look-up Table sections ID-Look-up Table Section Stat us Page 18.8 Look-up table programming guidelines Fig 93. ID Look-up table configuration example (FullCAN activated and enabled) Page 3. SPI overview 4. SPI data transfers Chapter 19: LPC24XX SPI 5. SPI peripheral details 5.1 General information 5.2 Master operation 5.3 Slave operation 5.4 Exception conditions 6. Pin description 7.1 SPI Control Register (S0SPCR - 0xE002 0000) The S0SPCR register controls the operation of the SPI0 as per the configuration bits setting. 7.2 SPI Status Register (S0SPSR - 0xE002 0004) The S0SPSR register controls the operation of the SPI0 as per the configuration bits setting. 7.3 SPI Data Register (S0SPDR - 0xE002 0008) 7.4 SPI Clock Counter Register (S0SPCCR - 0xE002 000C) 7.5 SPI Test Control Register (SPTCR - 0xE002 0010) 7.6 SPI Test Status Register (SPTSR - 0xE002 0014) 7.7 SPI Interrupt Register (S0SPINT - 0xE002 001C) 8. Architecture Fig 95. SPI block diagram Chapter 20: LPC24XX SSP interface SSP0/1 4. Pin descriptions 5. Bus description 5.1 Texas Instruments synchronous serial frame format 5.2 SPI frame format 5.2.1 Clock Polarity (CPOL) and Phase (CPHA) control 5.2.2 SPI format with CPOL=0,CPHA=0 5.2.3 SPI format with CPOL=0,CPHA=1 5.2.4 SPI format with CPOL = 1,CPHA = 0 Page 5.2.5 SPI format with CPOL = 1,CPHA = 1 5.3 Semiconductor Microwire frame format 5.3.1 Setup and hold time requirements on CS with respect to SK in Microwire mode 6.1 SSPn Control Register 0 (SSP0CR0 - 0xE006 8000, SSP1CR0 - 0xE003 0000) This register controls the basic operation of the SSP controller. 6.2 SSPn Control Register 1 (SSP0CR1 - 0xE006 8004, SSP1CR1 - 0xE003 0004) This register controls certain aspects of the operation of the SSP controller. 6.3 SSPn Data Register (SSP0DR - 0xE006 8008, SSP1DR - 0xE003 0008) Software can write data to be transmitted to this register, and read data that has been received. 6.4 SSPn Status Register (SSP0SR - 0xE006 800C, SSP1SR - 0xE003 000C) 6.5 SSPn Clock Prescale Register (SSP0CPSR - 0xE006 8010, SSP1CPSR - 0xE003 0010) 6.6 SSPn Interrupt Mask Set/Clear Register (SSP0IMSC - 0xE006 8014, SSP1IMSC - 0xE003 0014) 6.7 SSPn Raw Interrupt Status Register (SSP0RIS - 0xE006 8018, SSP1RIS - 0xE003 0018) 6.8 SSPn Masked Interrupt Status Register (SSP0MIS - 0xE006 801C, SSP1MIS - 0xE003 001C) 6.9 SSPn Interrupt Clear Register (SSP0ICR - 0xE006 8020, SSP1ICR - 0xE003 0020) 6.10 SSPn DMA Control Register (SSP0DMACR - 0xE006 8024, SSP1DMACR - 0xE003 0024) 3. Features of the MCI 4. SD/MMC card interface pin description Chapter 21: LPC24XX SD/MMC card interface 5. Functional overview 5.2.1 Secure digital memory card bus signals 5.3 MCI adapter 5.3.1 Adapter register block 5.3.2 Control unit 5.3.3 Command path 5.3.4 Command path state machine Page 5.3.5 Command format 5.3.6 Data path 5.3.7 Data path state machine Page Page 5.3.9 Bus mode 5.3.10 CRC Token status 5.3.11 Status flags 5.3.12 CRC generator 5.3.13 Data FIFO 5.3.14 Transmit FIFO 5.3.15 Receive FIFO 5.3.16 APB interfaces 5.3.17 Interrupt logic 6.1 Power Control Register (MCI Power - 0xE008 C000) 6.2 Clock Control Register (MCIClock - 0xE008 C004) 6.3 Argument Register (MCIArgument - 0xE008 C008) 6.4 Command Register (MCICommand - 0xE008 C00C) 6.5 Command Response Register (MCIRespCommand - 0xE008 C010) 6.6 Response Registers (MCIResponse0-3 - 0xE008 C014, E008 C018, E008 C01C and E008 C020) 6.7 Data Timer Register (MCIDataTimer - 0xE008 C024) 6.8 Data Length Register (MCIDataLength - 0xE008 C028) 6.9 Data Control Register (MCIDataCtrl - 0xE008 C02C) 6.10 Data Counter Register (MCIDataCnt - 0xE008 C030) 6.11 Status Register (MCIStatus - 0xE008 C034) Chapter 21: LPC24XX SD/MMC card interface 6.12 Clear Register (MCIClear - 0xE008 C038) 6.13 Interrupt Mask Registers (MCIMask0 - 0xE008 C03C) 6.14 FIFO Counter Register (MCIFifoCnt - 0xE008 C048) 6.15 Data FIFO Register (MCIFIFO - 0xE008 C080 to 0xE008 C0BC) Chapter 22: LPC24XX I2C interfaces I2C0/1/2 Page 6. I2C operating modes 6.1 Master Transmitter mode 6.2 Master Receiver mode 6.3 Slave Receiver mode 6.4 Slave Transmitter mode 7. I2C implementation and operation 7.1 Input filters and output stages Fig 117. I2C Bus serial interface block diagram 7.2 Address Register I2ADDR 7.3 Comparator 7.4 Shift register I2DAT 7.5 Arbitration and synchronization logic 7.6 Serial clock generator 7.7 Timing and control 7.8 Control register I2CONSET and I2CONCLR 7.9 Status decoder and status register 8. Register description 8.1 I2C Control Set Register (I2C[0/1/2]CONSET: 0xE001C000, 0xE005 C000, 0xE008 0000) Page 8.2 I2C Control Clear Register (I2C[0/1/2]CONCLR: 0xE001 C018, 0xE005 C018, 0xE008 0018) 8.3 I2C Status Register (I2C[0/1/2]STAT - 0xE001 C004, 0xE005 C004, 0xE008 0004) 8.4 I2C Data Register (I2C[0/1/2]DAT - 0xE001 C008, 0xE005 C008, 0xE008 0008) 8.5 I2C Slave Address Register (I2C[0/1/2]ADR - 0xE001 C00C, 0xE005 C00C, 0xE008 000C) 8.6 I2C SCL High Duty Cycle Register (I2C[0/1/2]SCLH - 0xE001 C010, 0xE005 C010, 0xE008 0010) 8.7 I2C SCL Low Duty Cycle Register (I2C[0/1/2]SCLL - 0xE001 C014, 0xE005 C014, 0xE008 0014) 8.8 Selecting the appropriate I2C data rate and duty cycle 9. Details of I2C operating modes 9.1 Master Transmitter mode 9.2 Master Receiver mode 9.3 Slave Receiver mode Page Fig 120. Format and States in the Master Transmitter mode Fig 121. Format and States in the Master Receiver mode Fig 122. Format and States in the Slave Receiver mode 9.4 Slave Transmitter mode Page Page Page Page Page 9.5 Miscellaneous states 9.6 Some special cases 9.7 Simultaneous repeated START conditions from two masters 9.8 Data transfer after loss of arbitration 9.9 Forced access to the I2C bus 9.10 I2C Bus obstructed by a Low level on SCL or SDA 9.11 Bus error 9.12 I2C State service routines 9.12.1 Initialization 9.12.2 I2C interrupt service 10. Software example 10.1 Initialization routine 10.2 Start master transmit function 10.3 Start master receive function 10.4 I2C interrupt routine 10.5 Non mode specific states 10.5.1 State : 0x00 10.6 Master states 10.6.1 State : 0x08 10.7 Master Transmitter states 10.7.1 State : 0x18 10.7.2 State : 0x20 10.7.3 State : 0x28 10.7.4 State : 0x30 10.8 Master Receive states 10.8.1 State : 0x40 10.8.2 State : 0x48 10.8.3 State : 0x50 10.8.4 State : 0x58 10.9 Slave Receiver states 10.9.1 State : 0x60 10.9.2 State : 0x68 10.9.3 State : 0x70 10.9.4 State : 0x78 10.9.5 State : 0x80 10.9.6 State : 0x88 10.9.7 State : 0x90 10.9.8 State : 0x98 10.9.9 State : 0xA0 10.10 Slave Transmitter States 10.10.1 State : 0xA8 10.10.2 State : 0xB0 10.10.3 State : 0xB8 10.10.4 State : 0xC0 10.10.5 State : 0xC8 Chapter 23: LPC24XX I2S interface 4. Pin descriptions Page 5.1 Digital Audio Output Register (I2SDAO - 0xE008 8000) 5.2 Digital Audio Input Register (I2SDAI - 0xE008 8004) 5.3 Transmit FIFO Register (I2STXFIFO - 0xE008 8008) 5.4 Receive FIFO Register (I2SRXFIFO - 0xE008 800C) 5.5 Status Feedback Register (I2SSTATE - 0xE0088010) 5.6 DMA Configuration Register 1 (I2SDMA1 - 0xE008 8014) 5.7 DMA Configuration Register 2 (I2SDMA2 - 0xE008 8018) 5.8 Interrupt Request Control Register (I2SIRQ - 0xE008 801C) 5.9 Transmit Clock Rate Register (I2STXRATE - 0xE008 8020) 5.10 Receive Clock Rate Register (I2SRXRATE - 0xE008 8024) 6. I2S transmit and receive interfaces 7. FIFO controller System signaling occurs when a level detection is true and enabled. Fig 128. FIFO contents for various I2S modes Chapter 24: LPC24XX Timer0/1/2/3 5.1 Multiple CAP and MAT pins Page 6.1 Interrupt Register (T[0/1/2/3]IR - 0xE000 4000, 0xE000 8000, 0xE007 0000, 0xE007 4000) The Timer Control Register (TCR) is used to control the operation of the Timer/Counter. 6.2 Timer Control Register (T[0/1/2/3]CR - 0xE000 4004, 0xE000 8004, 0xE007 0004, 0xE007 4004) 6.3 Count Control Register (T[0/1/2/3]CTCR - 0xE000 4070, 0xE000 8070, 0xE007 0070, 0xE007 4070) 6.4 Timer Counter registers (T0TC - T3TC, 0xE000 4008, 0xE000 8008, 0xE007 0008, 0xE007 4008) 6.5 Prescale register (T0PR - T3PR, 0xE000 400C, 0xE000 800C, 0xE007 000C, 0xE007 400C) 6.6 Prescale Counter register (T0PC - T3PC, 0xE000 4010, 0xE000 8010, 0xE007 0010, 0xE007 4010) 6.7 Match Registers (MR0 - MR3) 6.8 Match Control Register (T[0/1/2/3]MCR - 0xE000 4014, 0xE000 8014, 0xE007 0014, 0xE007 4014) 6.9 Capture Registers (CR0 - CR3) 6.10 Capture Control Register (T[0/1/2/3]CCR - 0xE000 4028, 0xE000 8028, 0xE007 0028, 0xE007 4028) 6.11 External Match Register (T[0/1/2/3]EMR - 0xE000 403C, 0xE000 803C, 0xE007 003C, 0xE007 403C) 7. Example timer operation 8. Architecture Fig 131. Timer block diagram Chapter 25: LPC24XX Pulse Width Modulator PWM0/PWM1 Page Fig 132. PWM block diagram 3.1 Rules for single edge controlled PWM outputs 3.2 Rules for double edge controlled PWM outputs 3.3 Summary of differences from the standard timer block Page Table25555 gives a brief summary of each of PWM related pins. 5. PWM base addresses The PWM0 and PWM1 function adds new registers and registers bits as shown in Table25557 below. Page 6.1 PWM Interrupt Register (PWM0IR - 0xE001 4000 and PWM1IR 0xE001 8000) 6.2 PWM Timer Control Register (PWM0TCR - 0xE001 4004 and PWM1TCR 0xE001 8004) 6.3 PWM Count Control Register (PWM0CTCR - 0xE001 4070 and PWM1CTCR 0xE001 8070) 6.4 PWM Match Control Register (PWM0MCR - 0xE001 4014 and PWM1MCR 0xE001 8014) Page 6.5 PWM Capture Control Register (PWM0CCR - 0xE001 4028 and PWM1CCR 0xE001 8028) 6.6 PWM Control Registers (PWM0PCR - 0xE001 404C and PWM1PCR 0xE001 804C) 6.7 PWM Latch Enable Register (PWM0LER - 0xE001 4050 and PWM1LER 0xE001 8050) Page Chapter 26: LPC24XX Real-Time Clock (RTC) and battery RAM 4. Architecture Page 6.1 RTC interrupts 6.2 Miscellaneous register group 6.2.1 Interrupt Location Register (ILR - 0xE002 4000) 6.2.2 Clock Tick Counter Register (CTCR - 0xE002 4004) 6.2.3 Clock Control Register (CCR - 0xE002 4008) 6.2.4 Counter Increment Interrupt Register (CIIR - 0xE002 400C) 6.2.5 Counter Increment Select Mask Register (CISS - 0xE002 4040) 6.2.6 Alarm Mask Register (AMR - 0xE002 4010) 6.3 Consolidated time registers 6.3.1 Consolidated Time Register 0 (CTIME0 - 0xE002 4014) 6.3.2 Consolidated Time Register 1 (CTIME1 - 0xE002 4018) 6.3.3 Consolidated Time Register 2 (CTIME2 - 0xE002 401C) 6.4 Time Counter Group 6.4.1 Leap year calculation 7. Alarm register group 8. Alarm output 9. RTC usage notes 10. RTC clock generation 10.1 Reference Clock Divider (Prescaler) 10.2 Prescaler Integer Register (PREINT - 0xE002 4080) 10.3 Prescaler Fraction Register (PREFRAC - 0xE002 4084) 10.4 Example of Prescaler Usage 10.5 Prescaler operation 11. Battery RAM 12. RTC external 32 kHz oscillator component selection Page Chapter 27: LPC24XX WatchDog Timer (WDT) 4. Register description 4.1 Watchdog Mode Register (WDMOD - 0xE000 0000) 4.2 Watchdog Timer Constant Register (WDTC - 0xE000 0004) 4.3 Watchdog Feed Register (WDFEED - 0xE000 0008) 4.4 Watchdog Timer Value Register (WDTV - 0xE000 000C) 4.5 Watchdog Timer Clock Source Selection Register (WDCLKSEL - 0xE000 0010) Chapter 27: LPC24XX WatchDog Timer (WDT) 5. Block diagram Fig 137. Watchdog block diagram Chapter 28: LPC24XX Analog-to Digital Converter (ADC) Page 5.1 A/D Control Register (AD0CR - 0xE003 4000) 5.2 A/D Global Data Register (AD0GDR - 0xE003 4004) 5.3 A/D Status Register (AD0STAT - 0xE0034030) 5.4 A/D Interrupt Enable Register (AD0INTEN - 0xE003 400C) 5.5 A/D Data Registers (AD0DR0 to AD0DR7 - 0xE003 4010 to 0xE003 402C) 6. Operation 6.1 Hardware-triggered conversion 6.2 Interrupts 6.3 Accuracy vs. digital receiver 4. Register description (DACR - 0xE006 C000) Chapter 29: LPC24XX Digital-to Analog Converter (DAC) 5. Operation 2. Flash boot loader 5. Description Chapter 30: LPC24XX Flash memory programming firmware 5.1 Memory map after any reset 5.1.1 Criterion for Valid User Code 5.2 Communication protocol 5.2.1 ISP command format 5.2.2 ISP response format 5.2.3 ISP data format Page 6. Boot process flowchart Fig 139. Boot process flowchart 7. Sector numbers 8. Code Read Protection (CRP) 9. ISP commands 9.1 Unlock <Unlock code> 9.2 Set Baud Rate <Baud Rate> <stop bit> 9.3 Echo <setting> 9.4 Write to RAM <start address> <number of bytes> 9.5 Read Memory <address> <no. of bytes> 9.6 Prepare sector(s) for write operation <start sector number> <end sector number> This command makes Flash write/erase operation a two step process. 9.7 Copy RAM to Flash <Flash address> <RAM address> <no of bytes> 9.8 Go <address> <mode> 9.9 Erase sector(s) <start sector number> <end sector number> 9.10 Blank check sector(s) <sector number> <end sector number> 9.11 Read Part Identification number 9.12 Read Boot code version number 9.13 Compare <address1> <address2> <no of bytes> 9.14 ISP Return Codes 10. IAP commands Page 10.1 Prepare sector(s) for write operation This command makes Flash write/erase operation a two step process. Table 621. IAP Command Summary IAP Command Command Code Described in Fig 140. IAP parameter passing 10.2 Copy RAM to Flash 10.3 Erase Sector(s) 10.4 Blank check sector(s) 10.5 Read Part Identification number 10.6 Read Boot code version number 10.7 Compare <address1> <address2> <no of bytes> 10.8 Reinvoke ISP 10.9 IAP Status Codes 11. JTAG Flash programming interface Chapter 31: LPC24XX On-chip bootloader for flashless parts 4.1 Memory map after any reset 4.2 Communication protocol Page 4.2.9 RAM used by IAP command handler 4.2.10 RAM used by RealMonitor 5. Boot process flowchart (1) For details on handling the crystal frequency, see Section 317.4 Reinvoke ISP on page 709 Fig 142. Boot process flowchart 6. ISP commands 6.1 Unlock <Unlock code> 6.2 Set Baud Rate <Baud Rate> <stop bit> 6.3 Echo <setting> 6.4 Write to RAM <start address> <number of bytes> 6.5 Read Memory <address> <no. of bytes> 6.6 Go <address> <mode> 6.7 Read Part Identification number 6.8 Read Boot code version number 6.9 Compare <address1> <address2> <no of bytes> 6.10 ISP Return Codes 7. IAP commands Page 7.1 Read Part Identification number 7.2 Read Boot code version number 7.3 Compare <address1> <address2> <no of bytes> 7.4 Reinvoke ISP 7.5 IAP Status Codes Page 3. Features of the GPDMA Chapter 32: LPC24XX General Purpose DMA (GPDMA) controller 4. Functional overview 4.2.1 AHB Slave Interface 4.2.2 Control Logic and Register Bank 4.2.3 DMA Request and Response Interface 4.2.4 Channel Logic and Channel Register Bank Table32651 shows endian behavior for different source and destination combinations. 4.2.9 Error conditions 4.2.10 Channel hardware 4.2.11 DMA request priority 4.2.12 Interrupt generation 4.2.13 The completion of the DMA transfer indication 4.3 DMA system connections 5. Programming the GPDMA 5.1 Enabling the GPDMA 5.2 Disabling the GPDMA Page 5.9 Programming a DMA channel 6.1 General GPDMA registers This section describes the registers of the GPDMA. 6.1.1 Interrupt Status Register (DMACIntStatus - 0xFFE0 4000) 6.1.2 Interrupt Terminal Count Status Register (DMACIntTCStatus - 0xFFE04004) 6.1.3 Interrupt Terminal Count Clear Register (DMACIntClear - 0xFFE0 4008) 6.1.4 Interrupt Error Status Register (DMACIntErrorStatus - 0xFFE0 400C) 6.1.5 Interrupt Error Clear Register (DMACIntErrClr - 0xFFE0 4010) 6.1.6 Raw Interrupt Terminal Count Status Register (DMACRawIntTCStatus - 0xFFE0 4014) 6.1.7 Raw Error Interrupt Status Register (DMACRawIntErrorStatus - 0xFFE0 4018) 6.1.8 Enabled Channel Register (DMACEnbldChns - 0xFFE0 401C) 6.1.9 Software Burst Request Register (DMACSoftBReq - 0xFFE0 4020) 6.1.10 Software Single Request Register (DMACSoftSReq - 0xFFE0 4024) 6.1.11 Software Last Burst Request Register (DMACSoftLBreq - 0xFFE0 4028) 6.1.12 Software Last Single Request Register (DMACSoftLSReq - 0xFFE0 402C) 6.1.13 Configuration Register (DMACConfiguration - 0xFFE0 4030) 6.1.14 Synchronization Register (DMACSync - 0xFFE0 4034) 6.2 Channel registers 6.2.3 Channel Linked List Item Registers (DMACC0LLI - 0xFFE0 4108 and DMACC1LLI - 0xFFE0 4128) 6.2.4 Channel Control Registers (DMACC0Control - 0xFFE0 410C and DMACC0Control - 0xFFE0 412C) Table32672 shows the value of the 3 bit DBSize or SBSize fields and the corresponding burst sizes. 6.2.5 Protection and Access Information Page 6.2.7 Lock control 6.2.8 Flow control and transfer type 7. Address generation 8. Scatter/Gather 8.1 Linked List Items 8.2 Programming the GPDMA for scatter/gather DMA 8.3 Example of scatter/gather DMA 9. Interrupt requests 9.1 Hardware interrupt sequence flow 9.2 Interrupt polling sequence flow 10. GPDMA data flow 10.1 Peripheral-to-memory, or Memory-to-peripheral DMA flow 10.2 Peripheral-to-peripheral DMA flow 10.3 Memory-to-memory DMA flow 11. Fl ow contr ol Chapter 33: LPC24XX EmbeddedICE Page 5. JTAG function select 7. Block diagram Chapter 33: LPC24XX EmbeddedICE Fig 147. EmbeddedICE debug environment block diagram 3.1 ETM configuration Chapter 34: LPC24XX Embedded Trace Module (ETM) Page 6. Reset state of multiplexed pins 7. Block diagram The block diagram of the ETM debug environment is shown below in Figure 34148. 5 Fig 148. ETM debug environment block diagram 10 Chapter 35: LPC24XX RealMonitor 3.1 RealMonitor components 3.1.1 RMHost 3.1.2 RMTarget 3.2 How RealMonitor works 4. How to enable RealMonitor 4.1 Adding stacks 4.2 IRQ mode 4.3 Undef mode 4.4 SVC mode Page 4.10 RMTarget initialization 4.11 Code example Page Page 5. RealMonitor build options Page Page 1. Abbreviations Chapter 36: LPC24XX Supplementary information 2. Legal information 2.1 Definitions 2.2 Disclaimers 2.3 Trademarks 3. Tables Page Page Page Page Page Page Page Page Page Page Page 4. Figures Page 5. Contents Chapter 1: LPC24XX Introductory information Chapter 2: LPC24XX Memory mapping Chapter 3: LPC24XX System control Chapter 4: LPC24XX Clocking and power control Chapter 5: LPC24XX External Memory Controller (EMC) Chapter 6: LPC24XX Memory Accelerator Module (MAM) Chapter 7: LPC24XX Vectored Interrupt Controller (VIC) Chapter 8: LPC24XX Pin configuration Chapter 9: LPC24XX Pin connect Chapter 10: LPC24XX General Purpose Input/Output (GPIO) Chapter 11: LPC24XX Ethernet Chapter 12: LPC24XX LCD controller Chapter 13: LPC24XX USB device controller Page Chapter 14: LPC24XX USB Host controller Chapter 15: LPC24XX USB OTG controller Chapter 16: LPC24XX Universal Asynchronous Receiver/Transmitter (UART) 0/2/3 Chapter 17: LPC24XX Universal Asynchronous Receiver/Transmitter (UART) 1 Chapter 18: LPC24XX CAN controllers CAN1/2 Chapter 19: LPC24XX SPI Chapter 20: LPC24XX SSP interface SSP0/1 Chapter 21: LPC24XX SD/MMC card interface Chapter 22: LPC24XX I2C interfaces I2C0/1/2 Chapter 23: LPC24XX I2S interface Chapter 24: LPC24XX Timer0/1/2/3 Chapter 25: LPC24XX Pulse Width Modulator PWM0/PWM1 Chapter 26: LPC24XX Real-Time Clock (RTC) and battery RAM Chapter 27: LPC24XX WatchDog Timer (WDT) Chapter 28: LPC24XX Analog-to Digital Converter (ADC) Chapter 29: LPC24XX Digital-to Analog Converter (DAC) Chapter 30: LPC24XX Flash memory programming firmware Chapter 31: LPC24XX On-chip bootloader for flashless parts Chapter 32: LPC24XX General Purpose DMA (GPDMA) controller Chapter 33: LPC24XX EmbeddedICE Chapter 34: LPC24XX Embedded Trace Module (ETM) Chapter 35: LPC24XX RealMonitor Chapter 36: LPC24XX Supplementary information