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| Référence | Fréquence |
| x32.76K | 32.76KHz |
| X1 | 1MHz |
| X1.8432 | 1.8434MHz |
| X2 | 2MHz |
| X2.048 | 2.048MHz |
| X2.4576 | 2.4576MHz |
| X2.5 | 2.5MHz |
| X3 | 3MHz |
| X3.072 | 3.072MHz |
| X3.2768 | 3.2768MHz |
| X3.5795 | 3.5795MHz |
| X3.6864 | 3.6864MHz |
| X4 | 4MHz |
| X4.0960 | 4.0960MHz |
| X4.1943 | 4.1943MHz |
| X4.1948 | 4.1948MHz |
| X4.4336 | 4.336MHz |
| X4.6080 | 4.6080MHz |
| X4.9152 | 4.9152MHz |
| X5 | 5MHz |
| X5.0688 | 5.0688MHz |
| X5.12 | 5.12MHz |
| X5.2428 | 5.2428MHz |
| X5.9904 | 5.9904MHz |
| X6 | 6MHz |
| X6.1440 | 6.1440MHz |
| X6.5536 | 6.5536MHz |
| X7.3728 | 7.3728MHz |
| X8 | 8MHz |
| X8.8672 | 8.8672MHz |
| X9.2160 | 9.2160MHz |
| X9.8304 | 9.8304MHz |
| X10 | 10MHz |
| X11 | 11MHz |
| X11.0592 | 11.0592MHz |
| X12 | 12MHz |
| X14.745 | 14.745MHz |
| X15 | 15MHz |
| X16 | 16MHz |
| X18 | 18MHz |
| X18.432 | 18.432MHz |
| X19.6608 | 19.6608MHz |
| X20 | 20MHz |
| X22 | 22MHz |
| X22.1184 | 22.1184MHz |
| X24 | 24MHz |
| X24.576 | 24.576MHz |
| X26.625 | 26.625MHz |
| X26.995 | 26.995MHz |
| X27 | 27MHz |
| X27.195 | 27.195Mhz |
| X27.648 | 27.648MHz |
| X30 | 30MHz |
| X30.875 | 30.875MHz |
| X30.9 | 30.9MHz |
| X32 | 32MHz |
| X40.680 | 40.680MHz |
| X44.336 | 44.336MHz |
| X48 | 48MHz |