Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsMicrocontrollers, Microprocessors & QuartzesEmbedded microcontroller LQFP 100 (14x14) 32-Bit 50 MHz I/O number 42

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Reading the Command Mask registers provides status for various functions. Writing to the Command

Mask registers specifies the transfer direction and selects which buffer registers are the source or

target of the data transfer.

Note that when a read from the message object buffer occurs when the WRNRD bit is clear and the

CLRINTPND and/or NEWDAT bits are set, the interrupt pending and/or new data flags in the message

object buffer are cleared.

CAN IF1 Command Mask (CANIF1CMSK)

CAN0 base: 0x4004.0000

Offset 0x024

Type R/W, reset 0x0000.0000

16171819202122232425262728293031

reserved

ROROROROROROROROROROROROROROROROType

0000000000000000Reset

0123456789101112131415

DATABDATAA

NEWDAT /

TXRQST

CLRINTPND

CONTROLARBMASKWRNRDreserved

R/WR/WR/WR/WR/WR/WR/WR/WROROROROROROROROType

0000000000000000Reset

DescriptionResetTypeNameBit/Field

Software should not rely on the value of a reserved bit. To provide

compatibility with future products, the value of a reserved bit should be

preserved across a read-modify-write operation.

0x0000.00ROreserved31:8

Write, Not Read

Transfer the message object address specified by the CAN Command

Request (CANIFnCRQ) register to the CAN message buffer registers.

Note: Interrupt pending and new data conditions in the message

buffer can be cleared by reading from the buffer (WRNRD = 0)

when the CLRINTPND and/or NEWDAT bits are set.

0R/WWRNRD7

Access Mask Bits

0: Mask bits unchanged.

1: Transfer IDMASK + DIR + MXTD of the message object into the

Interface registers.

0R/WMASK6

Access Arbitration Bits

0: Arbitration bits unchanged.

1: Transfer ID + DIR + XTD + MSGVAL of the message object into the

Interface registers.

0R/WARB5

Access Control Bits

0: Control bits unchanged.

1: Transfer control bits from the CANIFnMCTL register into the Interface

registers.

0R/WCONTROL4

June 18, 2012584

Texas Instruments-Production Data

Controller Area Network (CAN) Module

NRND: Not recommended for new designs.