Datasheet

The CANNWDA1 and CANNWDA2 registers hold the NEWDAT bits of the 32 message objects. By

reading these bits, the CPU can check which message object has its data portion updated. The

NEWDAT bit of a specific message object can be changed by three sources: (1) the CPU via the

CANIFnMCTL register, (2) the message handler state machine after the reception of a data frame,

or (3) the message handler state machine after a successful transmission.

The CANNWDA1 register contains the NEWDAT bits of the first 16 message objects in the message

RAM; the CANNWDA2 register contains the NEWDAT bits of the second 16 message objects.

CAN New Data 1 (CANNWDA1)

CAN0 base: 0x4004.0000

Offset 0x120

Type RO, reset 0x0000.0000

16171819202122232425262728293031

reserved

ROROROROROROROROROROROROROROROROType

0000000000000000Reset

0123456789101112131415

NEWDAT

ROROROROROROROROROROROROROROROROType

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.

0x0000ROreserved31:16

New Data Bits

0: No new data has been written into the data portion of the

corresponding message object by the message handler since the last

time this flag was cleared by the CPU.

1: The message handler or the CPU has written new data into the data

portion of the corresponding message object.

0x0000RONEWDAT15:0

595June 18, 2012

Texas Instruments-Production Data

Stellaris

LM3S8962 Microcontroller

NRND: Not recommended for new designs.