CLK_OUT_EN configuration register
| CLK20_OEN | Set 1 to enable 20m clock |
| CLK22_OEN | Set 1 to enable 22m clock |
| CLK44_OEN | Set 1 to enable 44m clock |
| CLK_BB_OEN | Set 1 to enable bb clock |
| CLK80_OEN | Set 1 to enable 80m clock |
| CLK160_OEN | Set 1 to enable 160m clock |
| CLK_320M_OEN | Set 1 to enable 320m clock |
| CLK_ADC_INF_OEN | Reserved |
| CLK_DAC_CPU_OEN | Reserved |
| CLK40X_BB_OEN | Set 1 to enable 40x_bb clock |
| CLK_XTAL_OEN | Set 1 to enable xtal clock |