LM3S5762 Datasheet, PDF (607/841 Pages) Texas Instruments – Stellaris® LM3S5762 Microcontroller

Stellaris® LM3S5762 Microcontroller
Bit/Field
3
Name
CLRINTPND
Type
R/W
2
NEWDAT / TXRQST R/W
1
DATAA
R/W
0
DATAB
R/W
Reset
0
0
0
0
Description
Clear Interrupt Pending Bit
If WRNRD is set, this bit controls whether the INTPND bit in the
CANIFnMCTL register is changed.
0: The INTPND bit in the message object remains unchanged.
1: The INTPND bit is cleared in the message object.
If WRNRD is clear and this bit is clear, the interrupt pending status is
transferred from the message buffer into the CANIFnMCTL register.
If WRNRD is clear and this bit is set, the interrupt pending status is cleared
in the message buffer. Note that the value of this bit that is transferred
to the CANIFnMCTL register always reflects the status of the bits before
clearing.
NEWDAT / TXRQST Bit
If WRNRD is set, this bit can act as a TXRQST bit and request a
transmission. Note that when this bit is set, the TXRQST bit in the
CANIFnMCTL register is ignored.
0: Transmission is not requested
1: Begin a transmission
If WRNRD is clear and this bit is clear, the value of the new data status
is transferred from the message buffer into the CANIFnMCTL register.
If WRNRD is clear and this bit is set, the new data status is cleared in the
message buffer. Note that the value of this bit that is transferred to the
CANIFnMCTL register always reflects the status of the bits before
clearing.
Access Data Byte 0 to 3
When WRNRD = 1:
0: Data bytes 0-3 are unchanged.
1: Transfer data bytes 0-3 in message object to CANIFnDA1 and
CANIFnDA2.
When WRNRD = 0:
0: Data bytes 0-3 are unchanged.
1: Transfer data bytes 0-3 in CANIFnDA1 and CANIFnDA2 to the
message object.
Access Data Byte 4 to 7
When WRNRD = 1:
0: Data bytes 4-7 are unchanged.
1: Transfer data bytes 4-7 in message object to CANIFnDB1 and
CANIFnDB2.
When WRNRD = 0:
0: Data bytes 4-7 are unchanged.
1: Transfer data bytes 4-7 in CANIFnDB1 and CANIFnDB2 to the
message object.
November 17, 2011
607
Texas Instruments-Production Data