TSC695FL
Synchronous Traps
Table 3.
Synchronous Traps
Trap
Priority
Trap Type (tt) Comments
Sources: SYSRESET* pin
software reset
watchdog reset
IU or System error reset
Severe error requiring a re-boot
TSC695FL enters (if not masked) in halt or reset mode.
Error not removable, PC & nPC OK
TSC695FL enters (if not masked) in halt or reset mode.
Special case of non-restartable, precise error.
TSC695FL enters (if not masked) in halt or reset mode.
Retrying instruction but PC & nPC have to be re-adjusted
TSC695FL enters (if not masked) in halt or reset mode.
Retrying instruction
TSC695FL enters (if not masked) in halt or reset mode.
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
Bus error
-
-
-
During SAVE instruction or trap taken
During RESTORE instruction or RETT instruction
-
Severe error, cannot restart the instruction.
Parity error on FPU data bus.
Can be removed restarting the instruction.
-
-
Invalid operation
Division by zero
Overflow
Underflow
Inexact
Reset
1
-
Non-restartable, imprecise
error
Non-restartable,
precise error
Register file error
Hardware Error
Restartable, late error
Restartable,
precise error
2
2.1
2.2
2.3
2.4
2.5
64h
62h
65h
63h
61h
Instruction access
(Error
on instruction fetch)
3
01h
Illegal Instruction
Privileged instruction
FPU disabled
Overflow
Window
Underflow
Memory address not aligned
Non-restartable error
Data bus error
Restartable error
Sequence error
Unimplemented FPop
FPU exception
4
5
6
02h
03h
04h
05h
7
06h
8
9.1
9.2
9.3
9.4
9.5
07h
IEEE exceptions:
9
9.6
08h
9
4204C–AERO–05/05
ATMEL [ ATMEL CORPORATION ]
