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Chapter 6
Instruction Cache
Preliminary User’s Manual U15839EE1V0UM00
6.5 Instruction
Cache
Initialisation
The instruction cache settings must be performed using the following procedure with the initial settings
of the user program immediately following a system reset.
(1)
Wait until the contents of the ICC register becomes 0000H (TAG initialization is completed).
(2)
Clear all bits of the ICI register using the following instruction:
st.h
r0, 0xfffff072[r0]
(3)
Set the ICC and ICD registers
(4)
Make the instruction cache settings of the cache configuration register BHC
Caution:
Be sure to make the BHC register settings running the code from an uncacheable
area (an instruction is not correctly fetched if settings are made using a cacheable
area).
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