TQDC Raw Data Format
Data types:
- 0010 - tdc header
- 0011 - tdc trailer
- 0100 - adc timestamp
- 0101 - tdc and adc data
- 0110 - tdc error
0100 - adc timestamp
31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
0 |
1 |
0 |
0 |
reserved |
channel |
0 |
0 |
0 |
ADC timestamp bits 31:16 |
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31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
0 |
1 |
0 |
0 |
reserved |
channel |
0 |
0 |
1 |
ADC timestamp bits 15:0 |
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0101 - tdc and adc data, select by mode field
31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
0 |
1 |
0 |
1 |
mode |
device |
channel |
data |
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Device = 1 for channels 0-7. Device = 2 for channels 8-15. Channels 16-31 are reserved.
Mode 0 - TDC time measurement
- data bits 18:0 = number of 100 ps time intervals since global trigger timestamp found in event header.
Mode 1 - calibration
- data bits 9:0 = adc sample.
- data bits 18:10 - reserved
Mode 2 - ADC sampling
- data bits 9:0 = adc sample.
- data bits 18:10 - reserved
Mode 3 - ADC integration
- data bits 18:0 - sum of adc samples
ADC is sampling at 100 MHz with resolution of 10 bits.
For detailed description of TDC data please refer to HPTDC manual.