TRIGGER SIGNAL GENERATOR CIRCUIT

摘要

PURPOSE:To simplify the constitution of a trigger signal generating circuit by using a deciding means and a trigger control means in place of a switch. CONSTITUTION:A setting means 11 gives a function code to a deciding means 12 via a register 2 and also the trigger conditions to a trigger control means 13. The means 12 decides whether the function code is set or not under the trigger conditions and starts the means 13 if said function code is set under the trigger conditions. The means 13 fetches the trigger conditions from the register 2 and applies an address 13A and data 13B corresponding to the trigger conditions to an output circuit 5 together with a signal 13C which sets the circuit 5 under a write mode. Thus both means 12 and 13 are used in place of a switch and can also be attained by software, which simplifies the constitution of a trigger signal generating circuit.