FVME2TMWR Raw Data Format

Data Types

Data types
0	logic state counters, matched (excluding dead time)
1	logic state counters, all (unblocked)
2	TAI timestamp and Global Event Number
3
4	relative timestamp low
5	relative timestamp high
6
7	input counters

Timecode in TAI (International Atomic Time) scale is received by White Rabbit interface.

Global Event Number is received from Central Trigger Processor.

TAI flags: 2 - timecode is valid, otherwise invalid.

Relative timestamp is reset every spill.

Timestamp frequency: 83.333 MHz

5 - Relative Timestamp and trigger bits
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
5				timestamp bits 31:24								Ext. trigger word				trigger word

Counter number is its position in readout data. Counters are cleared at the beginning of spill and after every trigger.

0 - logic state counters, matched (excluding dead time)
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				matched and triggered logic state count

1 - logic state counters, all (triggered and dead time)
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
1				unblocked logic state count

First logic state (number 0) is the trigger output. Counters are cleared at the beginning of spill.

Input counter are enabled by TTC SPILL signal. The mapping between counter number, input channel and trigger logic line is following: