DAVout0
DAVout1
DAVout2
DAVout3
DataOut0
Chip0
DataOut1
Chip0
Chip1
DataOut2
Chip0
Chip1
Chip2
DataOut3
Chip0
Chip1
Chip2
Chip3
RENout0
RENout1
RENout2
RENout3
Figure 13: Daisy Readout Sequence
15 Data Format
A data register is loaded with data packets from the data buffer and then shifts them off chip. It also
accepts the data being transmitted from a previous chip in the chain. Figure 13 shows the order of
the data packet which is transmitted off chip. A data packet is comprised of the following: 2 start bits
(11) 10 bit chip address, 7 bit channel address, 15 bit timestamp, 12 bit ADC data, 1bit hit bit, 1 stop
bit (0).
15.1 Data Packet
1
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
10 bit chip address
15 bit timestamp
9
-bits-
0
7
-bits-
0
14
-bits-
0
11
-bits-
0
0
2 start bits (11)
7 bit channel address
12 bit ADC data
Figure 14: Data Packet
16