Controls the phase shifted output
| SHIFT | phase shift the phase-shifted output by SHIFT input clocks this can be changed on-the-fly must be set to 0 before setting div=1 |
| FLIP | invert the phase-shifted output this is ignored when div=1 |
| ENABLE | enable the phase-shifted output this can be changed on-the-fly |
| PASSWD | set to 0xaa0 any other value enables the output with shift=0 |