LM3S611-IQN50-C2T Datasheet, PDF (110/574 Pages) Texas Instruments – Stellaris® LM3S611 Microcontroller

Cortex-M3 Peripherals
NRND: Not recommended for new designs.
Bit/Field
17:12
11
10:6
5:0
Name
VECPEND
RETBASE
reserved
VECACT
Type
RO
RO
RO
RO
Reset
0x00
Description
Interrupt Pending Vector Number
This field contains the exception number of the highest priority pending
enabled exception. The value indicated by this field includes the effect
of the BASEPRI and FAULTMASK registers, but not any effect of the
PRIMASK register.
Value
Description
0x00
No exceptions are pending
0x01
Reserved
0x02
NMI
0x03
Hard fault
0x04
Memory management fault
0x05
Bus fault
0x06
Usage fault
0x07-0x0A Reserved
0x0B
SVCall
0x0C
Reserved for Debug
0x0D
Reserved
0x0E
PendSV
0x0F
SysTick
0x10
Interrupt Vector 0
0x11
Interrupt Vector 1
...
...
0x2D
Interrupt Vector 29
0x2E-0x3F Reserved
0
0x0
0x00
Return to Base
Value Description
0 There are preempted active exceptions to execute.
1 There are no active exceptions, or the currently executing
exception is the only active exception.
This bit provides status for all interrupts excluding NMI and Faults. This
bit only has meaning if the processor is currently executing an ISR (the
Interrupt Program Status (IPSR) register is non-zero).
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.
Interrupt Pending Vector Number
This field contains the active exception number. The exception numbers
can be found in the description for the VECPEND field. If this field is clear,
the processor is in Thread mode. This field contains the same value as
the ISRNUM field in the IPSR register.
Subtract 16 from this value to obtain the IRQ number required to index
into the Interrupt Set Enable (ENn), Interrupt Clear Enable (DISn),
Interrupt Set Pending (PENDn), Interrupt Clear Pending (UNPENDn),
and Interrupt Priority (PRIn) registers (see page 54).
110
June 18, 2012
Texas Instruments-Production Data