When a fault is detected, the
OUTOVEN register is cleared, and when the fault condition is cleared, OUTOVEN is
restored according to the corresponding enabled DTI channels. For Common Waveform
Channel Mode (CWCM), this has no effect as the OUTOVEN is correct after restoring from
fault. For Pattern Generation Mode (PGM), OUTOVEN should instead have been restored
according to the DTLSBUF register.
Workaround
For CWCM, no workaround is required.
For PGM in latched mode, disable the DTI channels before
returning from the fault condition. Then, set the correct OUTOVEN value and enable the
DTI channels, before the direction (DIR) register is written to enable the correct
outputs again.
Affected Silicon Revisions
| ATxmega16A4U |
| Rev. A - D |
Rev. E |
| * |
X |
| ATxmega32A4U |
| Rev. A - D |
Rev. E |
| * |
X |
| ATxmega64A4U |
| Rev. A-B |
Rev. C |
Rev. D |
| * |
X |
- |