TRG

ALPHAT, the trigger control board for the ALPHA-g detector

References

• xxx

Control registers

Number	Name	Access	FwRev	Description
0	FwRev	RO		Firmware revision (0x01YYMMDD)

UDP data format

Offset	Name	Quartus name	FwRev	Description
0	packet counter	none	all	UDP packet counter, counting from 0, reset by reboot. Automatically added by UDP transmitter code in the GRIFC base firmware
1	0x8 packet header		all	28 bits of counter_trig_out
2	trigger timestamp	trig_ts	all	62.5MHz trigger timestamp
3	accepted triggers	counter_trig_out	all	counter of accepted triggers
4	input triggers	counter_trig_in	all	counter of trigger input
5	pulser triggers	counter_pulser	all	counter of pulser triggers
6	trigger bitmap	udp_trig_bits	0x5a48448d (30Dec17_17:59)	bitmap of trigger information, see below
7	nim bits	udp_nim_bits_masked	???	32 bits of ADC NIM inputs (2 bits per ADC)
8	esata bits	udp_esata_bits_masked	???	32 bits of ADC ESATA inputs (2 bits per ADC)
X
9	0x9 packet footer		all	28 bits of counter_trig_out

trigger bitmap

              udp_trig_bits[0] <= adc16_grand_or;
              udp_trig_bits[1] <= adc32_grand_or;
              udp_trig_bits[2] <= adc_grand_or;
              udp_trig_bits[3] <= esata_nim_grand_or;
              udp_trig_bits[4] <= adc16_coinc_top;
              udp_trig_bits[5] <= adc16_coinc_bot;
              udp_trig_bits[6] <= adc16_coinc;
              udp_trig_bits[7] <= 0;
              udp_trig_bits[23:8] <= adc16_coinc_dff[15:0];
              udp_trig_bits[31:24] <= mult16[7:0];

TODO

• add FwRev to the UDP data output

End

//KO