Analog Devices ADSP-BF535 Blackfin, Hardware Reference Manual

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Event Vector Table
4-42 ADSP-BF535 Blackfin Processor Hardware Reference
Note 1: For services (S), the return address is the address of the instruction
that follows the exception. For errors (E), the return address is the address
of the excepting instruction.
If an instruction causes multiple exceptions, only the exception with the
highest priority is taken.
Table 4-12 ranks exceptions by descending
priority.
Instruction fetch
CPLB miss 0x2C E CPLB miss on an instruction fetch.
Instruction fetch mul-
tiple CPLB hits 0x2D E More than one CPLB entry matches
instruction fetch address.
Illegal use of supervi-
sor resource 0x2E E Attempted to use a Supervisor register
or instruction from User mode.
Supervisor resources are registers and
instructions that are reserved for
Supervisor use: Supervisor only regis-
ters, all MMRs, and Supervisor only
instructions.
Table 4-12. Exceptions by Descending Priority
Priority Exception EXCAUSE
1 Unrecoverable Event 0x25
2 I-Fetch Multiple CPLB Hits 0x2D
3 I-Fetch Misaligned Access 0x2A
4 I-Fetch Protection Violation 0x2B
5 I-Fetch CPLB Miss 0x2C
6 I-Fetch Access Exception 0x29
7 Watchpoint Match 0x28
Table 4-11. Events That Cause Exceptions (Cont’d)
Exception EXCAUSE[5:0] Type:
(E) error
(S) service
See note 1. Notes/Examples