ABB DATX130 3ASC25H214 Rotor feedback board

ABB DATX130 3ASC25H214 Rotor feedback board Combinatorial logic
The combinatorial logic controller is composed of sequential circuit, instruction decoding circuit and combinatorial logic circuit. Through the instruction decoder to determine the current execution of the instruction, combined with the timing circuit generated by the beat, together as the input result of the combinative logic circuit output corresponding control signals. Combinatorial logic controller is composed of complex combinatorial logic gate circuit and flip-flop, and has high execution speed, so it is widely used in computer structures such as RISC. [1]
Design steps:
1. Design the instruction system of the machine: specify the types of instructions, the number of instructions and the format and function of each instruction;
2. Preliminary overall design: such as register setting, bus arrangement, computer design, connection relationship between components, etc.;
3. Draw instruction flow chart: mark the operation of each instruction at what time and what part;
4. Arrange operation schedule: that is, decompose each operation into micro-operation according to the instruction flow chart, and list the micro-operation to be carried out by the machine according to the time period;
5, list the microoperation signal expression, simplification, circuit realization.