EFM32WG Datasheet, PDF (46/834 Pages) List of Unclassifed Manufacturers – The EFM32WG Wonder Gecko is the ideal choice for demanding 8-, 16-, and 32-bit energy sensitive applications.

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Bit
15:0
Name
Reset
Access Description
LOCKKEY
0x0000
RW
Configuration Lock
Write any other value than the unlock code to lock access to MSC_CTRL, MSC_READCTRL, MSC_WRITECTRL and
MSC_TIMEBASE. Write the unlock code to enable access. When reading the register, bit 0 is set when the lock is enabled.
Mode
Read Operation
UNLOCKED
LOCKED
Write Operation
LOCK
UNLOCK
Value
0
1
0
0x1B71
Description
MSC registers are unlocked.
MSC registers are locked.
Lock MSC registers.
Unlock MSC registers.
7.5.13 MSC_CMD - Command Register
Offset
0x040
Reset
Access
Bit Position
Name
Bit
Name
Reset
Access Description
31:3
Reserved
To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)
2
STOPPC
0
W1
Stop Performance Counters
Use this command bit to stop the performance counters.
1
STARTPC
0
W1
Start Performance Counters
Use this command bit to start the performance counters. The performance counters always start counting from 0.
0
INVCACHE
0
W1
Invalidate Instruction Cache
Use this register to invalidate the instruction cache.
7.5.14 MSC_CACHEHITS - Cache Hits Performance Counter
Offset
0x044
Bit Position
Reset
Access
Name
Bit
31:20
Name
Reserved
Reset
Access Description
To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)
2013-05-08 - Wonder Gecko Family - d0233_Rev0.50
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