APCchip |-> iopad
        |-> detpad
        |-> caldiv
        |-> onedio
	|-> twodio
        |-> fresup
        |-> fresist
        |-> fresdwn -> fresup
        |-> padrec |-> sharp
        |          |-> inv1
        |          |-> split |-> inv1
        |                    |-> inv3
        |                    |-> tgate
	|
        |-> danaout |-> inv1
        |           |-> pullup -> fresdwn
        |           |-> split |-> inv1
        |           |         |-> inv3
        |           |         |-> tgate
        |           |
	|           |-> anabuf |-> qdfamp
        |                      |-> buffamp
        |                      |-> tgate
        |                      |-> tgpwr
        |
        |-> main |-> calsys -> calib4
                 |-> latref -> donkey
                 |-> stree |-> nand
                 |         |-> inv3
                 |         |-> srblk -> inv3
                 |
                 |-> smplreg -> strig8 -> strig |-> latch
                 |                              |-> nand
                 |                              |-> inv3
	         |
	         |-> coldum |-> onedio
                 |          |-> preamp -> donkey
                 |          |-> nschan |-> scell
		 |                     |-> dcell
                 |
                 |-> col128 -> col32 -> col4 -> col1 |-> preamp -> donkey
                                                     |-> nschan |-> scell
		                                     |          |-> dcell
                                                     |
                                                     |-> rdout |-> latch
                                                               |-> nand
                                                               |-> inv1