example: two MPAlight chips on the test board
1) power up MPAlight
2) when machine clock is stable, write 2 to reg 0x2
   (set to test beam mode) 
3) write 3 to reg 0x2
   (send 6x26.5MHz clockto MPAlight) 
4) write 1 to reg 0x0 to reset the control logic
5) write 2(nMPA) to reg 0x6001
6) conigure MPAlight
7) write shutter length to reg 0x205
8) read reg 0x80, if bits 7-5 less than 4, go to step 9.
9) read MPA1 memory data from reg 0x8000-0x80d7
   read MPA2 memory data from reg 0x8400-0x84d7
   read MPA1 counter data from reg 0x9800-0x9818
   read MPA2 counter data from reg 0x9820-0x9838
   read number of trigger during shutter open from reg 0x8
   read trigger arrival times starting from reg 0xa000(beam clock)
   read trigger arrival times starting from reg 0xc000(160MHz clock)
10) read reg 0x80, if bits 7-5 less than 3, go to step 11, else
   if bit 8 is 0 go to step 17
11) read MPA1 memory data from reg 0x8100-0x81d7
    read MPA2 memory data from reg 0x8500-0x85d7
    read MPA1 counter data from reg 0x9900-0x9918
    read MPA2 counter data from reg 0x9920-0x9938
   read number of trigger during shutter open from reg 0x9
   read trigger arrival times starting from reg 0xa800(beam clock)
   read trigger arrival times starting from reg 0xc800(160MHz clock)
12) read reg 0x80, if bits 7-5 less than 3, go to step 13, else
    if bit 8 is 0 go to step 17
13) read MPA1 memory data from reg 0x8200-0x82d7
    read MPA2 memory data from reg 0x8600-0x86d7
    read MPA1 counter data from reg 0x9a00-0x9a18
    read MPA2 counter data from reg 0x9a20-0x9a38
   read number of trigger during shutter open from reg 0xa
   read trigger arrival times starting from reg 0xb000(beam clock)
   read trigger arrival times starting from reg 0xd000(160MHz clock)
14) read reg 0x80, if bits 7-5 less than 3, go to step 15, else
    if bit 8 is 0 go to step 17
15) read MPA1 memory data from reg 0x8300-0x83d7
    read MPA2 memory data from reg 0x8700-0x87d7
    read MPA1 counter data from reg 0x9b00-0x9b18
    read MPA2 counter data from reg 0x9b20-0x9b38
   read number of trigger during shutter open from reg 0xb
   read trigger arrival times starting from reg 0xb800(beam clock)
   read trigger arrival times starting from reg 0xd800(160MHz clock)
16) read reg 0x80, if bits 7-5 less than 3, go to step 9, else
    if bit 8 is 0 go to step 17
17) read halt time from reg 0x5(beam clock)
    read total accepted trigger count from reg 0x3
    go to step 8