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Phase table switching algorithm.
| Phase table used in the previous cycle | Relationship between the current sampled values and the threshold values | Phase table chosen in the current cycle |
|---|---|---|
| Phase Table 1 or 2 | s1 > T1 | Phase Table 4 |
| s1 < T2 | Phase Table 3 | |
| T2 ≤ s1 < T1 | No switching | |
| Phase Table 3 or 4 | s2 > T1 | Phase Table 1 |
| s2 < T2 | Phase Table 2 | |
| T2 ≤ s2 < T1 | No switching |
