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Software in Supervisor or Emulation mode can invoke the Reset state
without involving the external
the Reset version of the
Application programs in User mode cannot invoke the Reset state, except
through a system call provided by an operating system kernel.
summarizes the state of the processor upon reset.
Table 3-5. Processor State Upon Reset
Item
Core
Operating Mode
Rounding Mode
Cycle Counters
DAG Registers (I, L, B, M)
Data and Address Registers
IPEND, IMASK, ILAT
CPLBs
L1 Instruction Memory
L1 Data Memory
Cache Validity Bits
System
Booting Methods
MSEL Clock Frequency
PLL Bypass Mode
VCO/Core Clock Ratio
VCO/System Clock Ratio
Peripheral Clocks
ADSP-BF53x/BF56x Blackfin Processor Programming Reference
Operating Modes and States
signal. This can be done by issuing
RESET
instruction.
RAISE
Description of Reset State
Supervisor mode in reset event, clocks stopped
Unbiased rounding
Disabled, zero
Random values (must be cleared at initialization)
Random values (must be cleared at initialization)
Cleared, interrupts globally disabled with IPEND bit 4
Disabled
SRAM (cache disabled)
SRAM (cache disabled)
Invalid
Determined by the values of BMODE pins at reset
Reset value = 10
Disabled
Reset value = 1
Reset value = 5
Disabled
Table 3-5
3-11
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