ARM Cortex-M3 - Table 8-6 Systick Current Value Register Bit Assignments; Table 8-7 Systick Calibration Value Register Bit Assignments; Figure 8-6 Systick Calibration Value Register Bit Assignments

Nested Vectored Interrupt Controller
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Table 8-6 describes the bit assignments of the SysTick Current Value Register.
SysTick Calibration Value Register
Use the SysTick Calibration Value Register to enable software to scale to any required
speed using divide and multiply.
The register address, access type, and Reset state are:
Address
0xE000E01C
Access Read
Reset state STCALIB
Figure 8-6 describes the bit assignments of the SysTick Calibration Value Register.
Figure 8-6 SysTick Calibration Value Register bit assignments
Table 8-7 describes the bit assignments of the SysTick Calibration Value Register.
Table 8-6 SysTick Current Value Register bit assignments
Bits Field Function
[31:24] - Reserved
[23:0] CURRENT 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.
31
0
TENMSReserved
2324
30
SKEW
NOREF
29
Table 8-7 SysTick Calibration Value Register bit assignments
Bits Field Function
[31] NOREF 1 = the reference clock is not provided.