TTCM Manual

TTC Bus Output

TTC bus output provides clock, spill, trigger and reset LVDS signals. It is compatible with VMEDAQ specification.

LEDs

• 1 (red) - lights on spill when data readout is enabled
• 2 (yellow) - blinks on blocked triggers (dead time)
• 3 (green) - blinks on triggers being read out

Inputs

• SPILL - external sync signal, positive logic. Readout enabled with logic one on this input.
• NIM1..NIM7 - Trigger inputs, NIM standard, 5 ns minimum
• LVDS1..LVDS32 - Trigger inputs, LVDS or ECL, 5 ns minimum

Outputs

• OUT1 - NIM, reserved
• OUT2 - NIM, reserved
• P12 internal connector - aux. TTC output

TTCM VME Interrupt Lines

• IRQ1 - data read XOFF input
• IRQ2 - spill output
• IRQ5 - data read request output

VME Registers

• Detailed description of TTCM VME Registers

VME Data Format

• TTCM Raw Data Format