TSC695F
Synchronous Traps
Table 4. Synchronous Traps
Trap
Priority
Trap Type (tt) Comments
Sources: SYSRESET* pin
software reset
watchdog reset
Reset
1
–
IU or System error reset
Non-restartable,imprecise
Severe error requiring a re-boot
error
2.1
2.2
2.3
2.4
64h
62h
65h
63h
61h
TSC695F enters (if not masked) in halt or reset mode
Non-restartable,
precise error
Error not removable, PC & nPC OK
TSC695F enters (if not masked) in halt or reset mode
Special case of non-restartable, precise error.
TSC695F enters (if not masked) in halt or reset mode
Register file error
Retrying instruction but PC & nPC have to be re-adjusted
TSC695F enters (if not masked) in halt or reset mode
Restartable, late error
Restartable,
precise error
Retrying instruction
TSC695F enters (if not masked) in halt or reset mode
2
2.5
Parity error on control bus
Parity error on data bus
Parity error on address bus
Access to protected or unimplemented area
Uncorrectable error in memory
Bus time out
Instruction access
(Error on instruction fetch)
3
4
5
6
01h
02h
03h
04h
05h
06h
07h
Bus error
Illegal Instruction
Privileged instruction
FPU disabled
–
–
–
Overflow
During SAVE instruction or trap taken
Window
Underflow
7
8
During RESTORE instruction or RETT instruction
Memory address not aligned
Non-restartable error
Data bus error
–
9.1
9.2
9.3
9.4
9.5
Severe error, cannot restart the instruction
Parity error on FPU data bus
Restartable error
Can be removed restarting the instruction
Sequence error
–
–
Unimplemented FPop
Invalid operation
Division by zero
Overflow
Underflow
IEEE exceptions:
9
9.6
08h
Inexact
9
4118H–AERO–06/03
ATMEL [ ATMEL ]
