0 IDLE
1 ST_IN_LOAD
2 ST_IN_SHIFT_LO
3 ST_IN_SHIFT_HI
4 ST_IN_LATCH_WAIT
5 ST_IN_LATCH
6 ST_OUT_LOAD_PRE
7 ST_OUT_LOAD
8 ST_OUT_LOAD_POST
9 ST_OUT_LOAD_CLR
10 ST_OUT_SHIFT_LO
11 ST_OUT_SHIFT_HI
12 ST_OUT_CAP_WAIT
13 ST_OUT_CAP