LM3S9792 Datasheet, PDF (82/1279 Pages) Texas Instruments – Stellaris® LM3S9792 Microcontroller

ARM Cortex-M3 Processor Core
2.2.8.4
2.2.8.5
When configuring SysTick as a single-shot timer, a new value is written on each tick interrupt, and
the actual count down value must be written. For example, if a tick is next required after 400 clock
pulses, 400 must be written into the RELOAD field.
Bit/Field
31:24
Name
reserved
23:0
RELOAD
Type
RO
R/W
Reset
0x00
-
Description
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.
Reload Value
Value to load into the SysTick Current Value Register when
the counter reaches 0.
SysTick Current Value Register
The SysTick Current Value Register contains the current value of the counter.
Bit/Field
31:24
Name
reserved
23:0
CURRENT
Type
RO
W1C
Reset
0x00
-
Description
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.
Current Value
This field contains the current value at the time the register is accessed.
No read-modify-write protection is provided, so change with care.
This register is write-clear. Writing to it with any value clears the register
to 0. Clearing this register also clears the COUNTFLAG bit of the
SysTick Control and Status Register.
SysTick Calibration Value Register
The SysTick Calibration Value register is not implemented.
82
June 14, 2010
Texas Instruments-Advance Information