26.4.8.4 Output Timing

All triggers, interrupts and data strobe outputs are internally asserted by the PTG state machine when the corresponding step command execution starts (i.e., before any additional time specified by the step delay timer) on the rising edge of the PTG execution clock.

Note: The trigger and strobe output pulse generators operate independently of the PTG sequencer and will not stall command execution to allow a pulse to complete. If a trigger output is requested by a step command before a previous trigger pulse has completed, the previous pulse will be terminated and the new trigger output will commence as normal. If a strobed data command is executed before one PTG clock cycle after a previous data strobe has completed, the behavior is undefined.

In Pulse mode (PTGTOGL = 0), the width of the trigger output signals is determined by the PTGPWD[3:0] bits (PTGCON[23:20]) and can be any value between 1 and 16 PTG clock cycles. The default value is one PTG clock cycle.

Refer to TRIG Negation When PTGTOGL = 1 when operating in Toggle mode (PTGTOGL = 1).

When globally controlled by the ‘PTGCTRL 0b1111’ broadcast trigger command, the TRIG output pulse width is determined by the PTGPWD[3:0] bits (PTGCON[23:20]) and can be any value between 1 and 16 PTG clock cycles. The default value is one PTG clock cycle.

Note: The trigger generated by using the ‘PTGCTRL 0b1111’ broadcast trigger command can only operate in Pulse mode (i.e., PTGTOGL = ‘don’t care’).