Which is widely used between state machines digital electronics?
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State machine designs are widely used for sequential control logic, which forms the core of many digital systems. State machines are required in a variety of applications covering a broad range of performance and complexity; low-level controls of microprocessor-to-VLSI-peripheral interfaces, bus arbitration and timing generation in conventional microprocessors, custom bit-slice microprocessors, data encryption and decryption, and transmission protocols are but a few examples.
Typically, the details of control logic are the last to be settled in the design cycle, since they are continuously affected by changing system requirements and feature enhancements. Programmable logic is a forgiving solution for control logic design because it allows easy modifications to be made without disturbing PC board layout. Its flexibility provides an escape valve that permits design changes without impacting time-to-market.
A majority of registered PLD device applications are sequential control designs where state machine design techniques are employed. As technology advances, new high-speed and high-functionality devices are being introduced which simplify the task of state machine design. A broad range of different functionality and performance solutions are available for state machine design. In this discussion we will examine the functions performed by state machines, their implementation on various devices, and their selection.
What Is a State Machine?
A state machine is a digital device that traverses through a predetermined sequence of states in an orderly fashion. A state is a set of values measured at different parts of the circuit. A simple state machine can consist of PLD-device based combinatorial logic, output registers, and buried (state) registers. The state in such a sequencer is determined by the values stored in the buried and/or output registers.
Typically, the details of control logic are the last to be settled in the design cycle, since they are continuously affected by changing system requirements and feature enhancements. Programmable logic is a forgiving solution for control logic design because it allows easy modifications to be made without disturbing PC board layout. Its flexibility provides an escape valve that permits design changes without impacting time-to-market.
A majority of registered PLD device applications are sequential control designs where state machine design techniques are employed. As technology advances, new high-speed and high-functionality devices are being introduced which simplify the task of state machine design. A broad range of different functionality and performance solutions are available for state machine design. In this discussion we will examine the functions performed by state machines, their implementation on various devices, and their selection.
What Is a State Machine?
A state machine is a digital device that traverses through a predetermined sequence of states in an orderly fashion. A state is a set of values measured at different parts of the circuit. A simple state machine can consist of PLD-device based combinatorial logic, output registers, and buried (state) registers. The state in such a sequencer is determined by the values stored in the buried and/or output registers.
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