Sjw | National CP3BT26 manual

INTERNAL	If the Internal function is enabled, the CANTX
	and CANRX pins of the CAN module are inter-
	nally connected to each other. This feature
	can be used in conjunction with the LOOP-
	BACK mode. This means that the CAN mod-
	ule can receive its own sent messages
	without connecting an external transceiver
	chip to the CANTX and CANRX pins; it allows
	software to run real stand-alone tests without
	any peripheral devices.
	0 – Normal mode.
	1 – Internal mode.
DIAGEN	The Diagnostic Enable bit globally enables or
	disables the special diagnostic features of the
	CAN module. This includes the following func-
	tions:
	•	LO (Listen Only).
	•	IGNACK (Ignore Acknowledge).
	•	LOOPBACK (Loopback).
	•	INTERNAL (Internal Loopback).
	•	Write access to hidden receive buffer.
	0 – Normal mode.
	1 – Diagnostic features enabled.
EIT	The Error Interrupt Type bit configures when
	the Error Interrupt Pending Bit (CIPND.EIP-
	ND) is set and an error interrupt is generated

if enabled by the Error Interrupt Enable (CIEN.EIEN).

0 – The EIPND bit is set on every error on the CAN bus.

1 – The EIPND bit is set only if the error state (CSTPND.NS) changes as a result of in- crementing either the receive or transmit error counter.

19.10.7 CAN Timing Register (CTIM)

The Can Timing Register (CTIM) defines the configuration of the Bit Time Logic (BTL).

15	9	8		7		6				3	2		0
PSC			SJW					TSEG1				TSEG2

				0

					R/W

PSC	The Prescaler					Configuration				field			specifies
	the CAN prescaler. The settings are shown in
	Table 57
	Table 57 CAN Prescaler Settings

			PSC6:0						Prescaler

		000000									2

		000001									3

		000010									4

		000011									5

		000100									6

				:							:

		1111101									127

		1111110									128

		1111111									128

SJW	The Synchronization Jump Width field speci-
	fies the Synchronization Jump Width, which
	can be programmed between 1 and 4 time
	quanta (see Table 58).
			Table 58					SJW Settings

	SJW					Synchronization Jump
	SJW								Width (SJW)
									Width (SJW)

	00							1 time quantum

	01								2 time quanta

	10								3 time quanta

	11								4 time quanta

CP3BT26

Note: The settings of SJW must be configured to be small- er or equal to TSEG1 and TSEG2

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National CP3BT26 manual Sjw

Contents

National Semiconductor Corporation Block DiagramGeneral Description MAY Table of Contents Features Device Overview Advanced Audio Interface Bluetooth LLCCan Interface Quad Uart Versatile Timer Unit MICROWIRE/SPIACCESS.BUS Interface MULTI-FUNCTION Timer Development Support Power ManagementDMA Controller Serial Debug Interface LQFP-144 Signal DescriptionsCP3BT26 LQFP-128 X1CKO ResetX1CKI Bbclk Name Pins Primary Function Alternate Alternate Function PG6 PG4Sdat PG5 X1CKI CTS PE4 SelioWR0 WR1 SLE CPU Architecture GENERAL-PURPOSE RegistersDedicated Address Registers No carry or borrow occurred Carry or borrow occurred Processor Status Register PSRInterrupt Base Register Intbase 12 11 Reserved Is held in the Intbase register, which is not Configuration Register CFGWhen the IDT has 16-bit entries, and all ex Mode for the CR16B large model. Addressing Modes Addb R1, R2Loadw 12R5, R6 Instruction SET Stacks Instruction Set Summary Mnemonic Operands Description LPR AshudLshd Tbit Popret RetxPush POP Wait StormpEiwait NOP Memory Operating EnvironmentIN/A Empty BUS Interface Unit BIUBUS Cycles BIU Control Registers Static Zone 0 Configuration Register SZCFG0 2 I/O Zone Configuration Register Iocfg Static Zone 1 Configuration Register SZCFG1 Static Zone 2 Configuration Register SZCFG2WBR RBE Hold Wait Ipst RAM Memory Access to PeripheralsWait and Hold States Flash Program/Data Memory System Configuration Registers Module Configuration Register McfgSystem Configuration Registers Name Address Description Module Status Register Mstat Software Reset Register Swreset Flash Memory Flash Memory ProtectionFlash Memory Organization Flash Memory Operations Main Block Write Main Block Page EraseMain Block Module Erase Information Block Module Erase Boot Information Block WordsArea Empty Ispe CPU Reset BehaviorBoot Area Start-Up Operation Flash Memory Interface Registers FMIBDR/FSMIBDR Flash Memory 0 Write Enable Register FM0WER/FSM0WERFlash Memory 1 Write Enable Register FM1WER Flash Memory Information Block Data Register Flash Data Memory 0 Write Enable Register FSM0WER Flash Memory Control Register FmctrlFsmctrl Fsmstat FsmpsrFMSTART/FSMSTART Flash Memory End Time Reload Register FMEND/FSMEND FMRCV/FSMRCV FSMAR1 Flash Memory Auto-Read Register 0 FMAR0/ FSMAR0Flash Memory Auto-Read Register 2 FMAR2/ FSMAR2 DMA Channel Assignment Peripheral Trans Register Action DMA ControllerChannel Assignment Transfer Types Operation Modes Debug Mode Software DMA RequestDMA Controller Register SET Device B Address Register ADRBn Device a Address Counter Register ADCAnDevice a Address Register ADRAn Device B Address Counter Register ADCBn DMA Control Register DMACNTLn Block Length Register BLTRn DMA Status Register Dmastat VLD Chac OVRVLD Interrupt Controller Registers InterruptsNON-MASKABLE Interrupts Maskable Interrupts Interrupt Vector Register Ivct External NMI Trap Control and Status Register ExnmiNon-Maskable Interrupt Status Register Nmistat Interrupt Status Register 2 ISTAT2 Interrupt Enable and Mask Register 1 IENAM1Interrupt Enable and Mask Register 2 IENAM2 Interrupt Status Register 1 ISTAT1 IRQ Number Description Maskable Interrupt SourcesNested Interrupts Maskable Interrupts Assignment IRQ Number Description Triple Clock and Reset Module Triple Clock and Reset Capacitor C1, C2 Capacitance External Crystal NetworkCrystal Resonance Frequency Type Min. Q factor Main ClockSlow Clock PLL Clock System Clock POWER-ON ResetExternal Reset Clock and Reset Registers MODE20 Module Activity Summary Power Mode Clock Power ManagementActive Mode Power Save Mode Power Management Control Register Pmmcr Idle Mode Power Management RegistersHalt Mode Power Management Registers Name Address Description DHC HccmHcch Active Mode to Power Save Mode OHC OMC OLCOHC Wake-Up Transition to Active Mode Entering Idle ModeEntering Halt Mode Software-Controlled Transition to Active Mode Multi-Input Wake-Up Multi-Input Wake-Up Module Block Diagram Multi-Input Wake-Up Registers Name Address Description MULTI-INPUT WAKE-UP RegistersMiwu Sources Miwu Channel Wake-Up 1 Edge Detection Register WK1EDG Wake-Up Interrupt Enable Register WK0IENAWake-Up 1 Interrupt Enable Register WK1IENA Wake-Up Enable Register WK0ENA WK1ICTL1 WK1ICTL2 Wake-Up Interrupt Control RegisterWK0ICTL1 WK0ICTL2 Wake-Up 1 Interrupt Control Register Wake-Up 1 Pending Clear Register WK1PCL Wake-Up Pending Register WK0PNDWake-Up Pending Clear Register WK0PCL Wake-Up 1 Pending Register WK1PND Programming Procedures Port Registers Input/Output Ports Address Description Port Registers Port Direction Register PxDIR Port Alternate Function Register PxALTPort Data Input Register PxDIN Port Data Output Register PxDOUT Port Pin PxALTS = Port High Drive Strength Register PxHDRVPort Alternate Function Select Register PxALTS Alternate Function Select OPEN-DRAIN Operation Rfdata Bluetooth ControllerRF Interface X1CKI/BBCLK Sdat Serial InterfaceRfce Sclk Serial Interface Write Timing Read Operation Write Operation First part of read cycle driven by CP3BT26. Address is 0Ah Bit, and register address for a read cycle. In the second 15.4 LMX5252 POWER-UP Sequence 15.3 LMX5251 POWER-UP Sequence Bluetooth Sleep Mode Bluetooth Global RegistersBluetooth Sequencer RAM Bluetooth Shared Data RAM 16.0 12-Bit Analog to Digital Converter Functional DescriptionData Path Pen-Down Detector OperationADC Clock Generation ADC Voltage References Touchscreen Interface Touchscreen Driver Configuration RYP Measuring Pen ForceRX2 RY2 ADC Registers Name Address Description ADC Operation in POWER-SAVING ModesFreeze ADC Register SET Touchcfg ADC0/TSX+ ADC1/TSY+ ADC2/TSX ADC3/TSY Muxcfg Prefcfg NrefcfgClkdiv ADC Start Conversion Delay Register Adcscdly ADC Conversion Control Register AdccntrlADC Start Conversion Register Adcstart Sign ADC Result Register AdcresltAdcresult Adcoflw Random Number Generator RNG RNG Module Block Diagram Random Number Generator Register SET Functional States USB Controller TX Fifo RX Fifo Endpoint Operation Transmit Endpoint Fifo Operation TXFIFO1, TXFIFO2, TXFIFO3 Bidirectional Control Endpoint FIFO0 Operation USB Controller Registers Receive Endpoint Fifo Operation RXFIFO1, RXFIFO2, RXFIFO3USB Controller Registers Name Address Description Main Control Register Mcntrl NFS Node Functional State Register NfsrNFS USB Functional States Main Event Register Maev Main Mask Register MamskAlternate Event Register Altev Alternate Mask Register Altmsk Transmit Event Register TxevTransmit Mask Register Txmsk Receive Event Register Rxev NAK Event Register Nakev Receive Mask Register RxmskNAK Mask Register Nakmsk Fifo Warning Event Register Fwev Frame Number High Byte Register FNHFifo Warning Mask Register Fwmsk Dsrc DMA Event Register Dmaev DMA Count Register Dmacnt DMA Error Register DmaerrDMA Mask Register Dmamsk Mirror Register MIR Transmit Command 0 Register TXC0 Endpoint Control 0 Register EPC0Transmit Status 0 Register TXS0 Receive Command 0 Register RXC0 Transmit Data 0 Register TXD0Receive Status 0 Register RXS0 Receive Data 0 Register RXD0 Endpoint Control Register n EPCnTransmit Status Register n TXSn RFF Transmit Command Register n TXCnTfwl Last Bytes Remaining in Fifo Transmit Fifo Warning LimitReceive Status Register n RXSn Tfwl Rfwl Receive Command Register n RXCn Receive Data Register n RXDTransceiver Interface Receive Fifo Warning Limit Can Module Basic can Concepts Can Block Diagram Arbitration Field Can Frame TypesCan Frame Fields Start of Frame SOF ACK Field Data Length Code DLCData Field Cyclic Redundancy Check CRC Remote Frame Data FieldCyclic Redundancy Check Field CRC Error Frame Overload Frame Error Frame Acknowledgment Error Stuff ErrorForm Error Bit CRC Error Error Counters Error ActiveError Warning Error Passive Bit Timing Bit Time LogicCan Bit Time Synchronization CKI Message Transfer From the can bus Gmask and BMASK. shows Acceptance FilteringExample 1 Acceptance of a Single Identifier Two 32-bit masks are used to filter unwanted messages 120 Receive Structure Rxbusy Receive ProcedureReceive Timing Writing to Buffer Status Code During 122 Buffer Read Routine Bufflock Enabled Transmit Structure Transmit SchedulingTransmit Priority PRI Txpri TX Buffer States Interrupts IRQ IST3 IST2 IST1 IST0 Time Stamp Counter Message Buffer Map Address Register CPU Access to can Registers/MemoryMemory Organization Message Buffer Organization Can Controller Registers Can Controller Registers Name Address DescriptionBuffer Status/Control Register Cnstat Buffer Status Section of the Cnstat Register ST3 DIR ST2 ST1 ST0 BusyBuffer Status Standard Frame with 8 Data Bytes Address Buffer Register Data Length CodingDLC Storage of Standard Messages Extended Messages with 8 Data Bytes Address Buffer Register Cnstat DLCPRI SRR Extended Remote Frame Address Buffer Register Frame is received, the contents of these registers will beContents of these registers are ignored. If a remote Storage of Remote Messages Can Global Configuration Register Cgcr Dress, as shown in Figure Listen Only bit can be used to configureWhen the Ignore Acknowledge bit is set, When the Loopback bit is set, all messages SJW Xrtr TSEG1TSEG2 RTR IDE BM170 Can Interrupt Enable Register CienBasic Mask Register BMSKB/BMSKX Basic Mask BM2818 IRQ EFID30 Can Error Counter Register CanecCan Error Diagnostic Register Cediag Error Field Identifier External Connection Can Timer Register CtmrExternal can Pins Signal Name Type Description System START-UP and MULTI-INPUT WAKE-UP Remote Frames Minimum Clock Frequency Requirements Baud RateBit Time Logic Calculation Examples Acceptance Filter Considerations Usage Hint Audio Interface Signals Advanced Audio InterfaceAudio Interface Modes Synchronous Mode Normal ModeDMA Support 145 Audio Interface Operation Clock ConfigurationFrame Clock Generation BIT Clock Generation Receive TransmitDMA Operation Fifo Operation Frame Sync Signal Communication OptionsData Word Length Short and Long Frame Sync Pulses Audio Control Data IOM-2 Mode Loopback Mode150 Freeze Mode Audio Interface RegistersAudio Interface Registers Name Address Description Audio Transmit DMA Register n ATDRn Audio Receive Fifo Register ArfrAudio Transmit Fifo Register Atfr Audio Receive DMA Register n ARDRn FSL Audio Global Configuration Register AgcrSlots per Mode Frame SCS Txeip Audio Interrupt Status and Control Register AiscrTxeip Txip Rxeip Rxip Txeie Txie Rxeie Rxie Txeic Txic Rxeic Rxic Rxie Rxsa Bit Slots Enabled Rxdsa Bit Slots Enabled For DMAAudio Receive Status and Control Register Arscr Txsa Bit Slots Enabled Txdsa Bit Slots Enabled For DMAAudio Transmit Status and Control Register Atscr DMA Request Condition Audio Clock Control Register AccrAudio DMA Control Register Admacr RMD CVSD/PCM Conversion Module OperationPCM Conversions Interrupt Generation Cvsd ConversionPCM to Cvsd Conversion Cvsd to PCM Conversion CVSD/PCM Converter Registers Linearout Cvsd Status Register Cvstat Uart Modules Functional OverviewUart Operation Uart Asynchronous Communication Uart Block Diagram Frame Format Selection Diagnostic Mode Prescaler Factor Prescaler Factors Parity Generation and Detection Break Generation and Detection Uart Registers Name Address Description Uart Registers Uart Frame Select Register UnFRS Uart Baud Rate Divisor UnBAUDUart Receive Data Buffer UnRBUF Uart Transmit Data Buffer UnTBUF Uart Status Register UnSTAT Uart Mode Select Register 1 UnMDSL1 Oversampling Rate Uart Interrupt Control Register UnICTRLUart Oversample Rate Register UnOVR UOVSR30 Oversampling Rate Sample Position Uart Mode Select Register 2 UnMDSL2Baud Rate Calculations Uart Sample Position Register UnSPOS 173 174 Shifting Microwire/SPI InterfaceMicrowire Operation Microwire Interface Clocking Modes Writing Normal Mode Scidl = Master Mode Slave Mode Microwire Interrupt Trigger Condition Status Enable BitMWCTRL1 Mwen Microwire Interface Registers OVR RBF BSY Microwire Status Register MwstatSCM Scdv Start and Stop ACCESS.bus InterfaceACB Protocol Overview Data Transactions Acknowledge Cycle Addressing Transfer FormatsArbitration on the Bus ACB Functional Description Slave Error Detections Master Error DetectionsBus Idle Error Recovery Slave Mode ACCESS.BUS Interface Registers ACB Control Status Register Acbcst Stop TgsclACB Control Register 1 ACBCTL1 Start ACB Control Register 3 ACBCTL3 ACB Control Register 2 ACBCTL2 Saen Usage HintsACB Own Address Register 1 ACBADDR1 Saen Addr 190 Avoiding Bus Error During Write Transaction 191 Timer T0 Operation Timing and Watchdog ModuleTWM Structure Register Locking Power Save Mode OperationWatchdog Operation TWM Registers T0IN Mdiv Watchdog Count Register Wdcnt Watchdog Programming ProcedureWatchdog Service Data Match Register Wdsdm TWMT0 Control and Status Register T0CSR 196 Multi-Function TimerTimer Structure Clock Source Block Counter Clock Source Select Timer Operating ModesPulse Accumulate Mode Limitations in Low-Power Modes 198 Mode 1 Processor-Independent PWM Dual-Input Capture Mode Mode 2 Dual Input Capture 200 Mode 3 Dual Independent Timer/Counter Input Capture Plus Timer Mode Mode 4 Input Capture Plus Timer Tben Timer InterruptsTimer I/O Functions Taen Timer Registers Timer Mode Control Register Tctrl Reload/Capture a Register TcraReload/Capture B Register Tcrb Timer Interrupt Clear Register Ticlr Timer Interrupt Control Register Tictl Versatile Timer Unit VTU VTU Functional Description206 VTU PWM Generation Dual 8-bit PWM Mode 208 VTU 16-bit PWM Mode Dual 16-Bit Capture Mode ISE Mode operation VTU Dual 16-bit Capture Mode Low Power Mode Mode Control Register Mode VTU RegistersVTU Registers Name Address Description Interrupt Control Register Intctl CxEDG Capture Counter Reset Clock Prescaler Register 1 CLK1PS Interrupt Pending Register IntpndClock Prescaler Register 2 CLK2PS Period/Capture Register n PERCAPx Counter Register n COUNTxCNTx Duty Cycle/Capture Register n DTYCAPx Register Map Bluetooth LLC Registers USB Node Registers Register Name Size Address Access Value After Comments Type EPC4 EPC1TXC1 EPC2 Can Module Message Buffers DMA Controller Can Registers Bus Interface Unit System Configuration Flash Program Memory InterfaceFlash Data Memory Interface CVSD/PCM Converter Triple Clock + Reset General-Purpose I/O Ports Multi-Input Wake-Up Comments Type Register Name Size Address Interrupt Control Unit Advanced Audio Interface UART1 UART0 UART3 UART2 ACCESS.bus Multi-Function TimerTiming and Watchdog ADC Versatile Timer Unit Word FF F284h RNGRngcst Rngd Register Bit Fields USB Fwmsk RXWARN31 Setup Toggle Rxlast Rcount RXC0IGN Ignout Rxen Setup EPC1 Nakev OUT Nakmsk Fwev RXWARN31 Control Status Can Dmac Memory Registers Flash System Configuration RegistersBIU TBI Register Flash Data Memory CLK3RES CVSD/PCM AAI PMM RegisterMIWU16 Gpio Registers Uart ICU Registers MWSPI16 ACB RegistersMFT16 VTU Rngdivh RngcstImsk Rngd TBD Electrical CharacteristicsSymbol Parameter Conditions Min Max Units Absolute Maximum Ratings IOOff DNL Symbol Parameter Conditions Min Typ Max UnitsINL LSB Flash Memory ON-CHIP Programming TRI-STATE Output Signal LevelsClock and Reset Timing Reset and NMI Input Signals Clock Timing NMI Signal Timing Uart Timing Uart Output Signals 30.9 I/O Port Timing Port Output Signals Advanced Audio Interface AAI Timing AAI Output Signals Receive Timing, Long Frame Sync Transmit Timing, Short Frame Sync Microwire/SPI Output Signals MICROWIRE/SPI TimingMicrowire/SPI Signals Symbol Description Reference Min ns Microwire/SPI Input Signals 254 Normal Mode After FE onMicrowire Data Out Valid Alternate Mode After RE On MSK Propagation Time 255 256 Microwire Transaction Timing, Alternate Mode, Scidl = 257 ACCESS.bus Output Signals ACCESS.BUS Timing 259 260 ACB Data Timing MULTI-FUNCTION Timer MFT Timing USB Port AC Characteristics 262 Versatile Timing Unit VTU TimingTIOx Input High Time Rising Edge RE on CLK TIOx Input Low Time RE on CLK External BUS Timing External Bus Output Signals 264 Early Write Between Normal Read Cycles No Wait States 265 266 Consecutive Normal Read Cycles Burst, No Wait States 267 268 Early Write Between Fast Read Cycles X1CKO X1CKI Pin AssignmentsLQFP-128 Package PWR SDA ADC0 TSX+ Reset TMSAvcc PWR Adgnd Advcc Uvcc X2CKI X2CKO ENV2 PF1 MDIDO/TIO2 PE0 RXD0 Gpio PE1 TXD0 PE2 RTS PE3 CTS PE4 CKX/TB PE5SRFS/NMI PF0 MSK/TIO1 272 LQFP-144 Package ADC7 Adcin SCL SDA ADC0 TSX+ADC4 MUXOUT0 ADC5 MUXOUT1 Pin Name Alternate Functions Pin Number Type A10 A22 A21 A20 A19 A18 A17 A16 A15 A14 A13A12 A11 Revision History Revision HistoryDate Major Changes From Previous Version LQFP-128 Package LQFP-144 Package Physical Dimensions millimeters unless otherwise noted Form when properly used in accordance with instructions Life Support PolicyBanned Substance Compliance