By Jean-Pierre Deschamps, Elena Valderrama, Lluís Terés
This textbook for a one-semester path in electronic platforms layout describes the elemental tools used to enhance “traditional” electronic platforms, in accordance with using common sense gates and turn flops, in addition to extra complicated suggestions that allow the layout of very huge circuits, in response to Description Languages and Synthesis instruments. It used to be initially designed to accompany a MOOC (Massive Open on-line direction) created on the independent collage of Barcelona (UAB), at present to be had at the Coursera platform.
Readers will examine what a electronic approach is and the way it may be constructed, getting ready them for steps towards different technical disciplines, equivalent to desktop structure, Robotics, Bionics, Avionics and others. In specific, scholars will discover ways to layout electronic platforms of medium complexity, describe electronic platforms utilizing excessive point description languages, and comprehend the operation of desktops at their most simple point. All techniques brought are strengthened by means of abundant illustrations, examples, workouts, and purposes. For instance, as an utilized instance of the layout innovations offered, the authors reveal the synthesis of an easy processor, leaving the coed able to input the area of machine structure and Embedded structures.
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Extra info for Digital Systems: From Logic Gates to Processors
This type of small ROM (eight 2-bit words in this example) is often called lookup table (LUT) and it is the method used in field programmable gate arrays (FPGA) to implement switching functions of a few variables (Chap. 7). Instead of a ROM, a table can also be implemented by means of logic gates (Sect. 2), for example AND gates, OR gates, and Inverters (or NOT gates). Remember that • The output of an n-input AND gate is equal to 1 if, and only if, its n inputs are equal to 1. • The output of an n-input OR gate is equal to 1 if, and only if, at least one of its n inputs is equal to 1.
HAB. HAB. HAB. Fig. C Not allowed In some tristate components the control signal c is active at low level. The corresponding symbols and definitions are shown in Fig. 13. A typical application of tristate components is shown in Fig. 30. It is a 4-bit bus that permits to send 4-bit data either from circuit A to circuit C or from circuit B to circuit C. As an example, A could be a memory, B an input interface, and C a processor. Both circuits A and B must be able to send data to C but cannot be directly connected to C.
On the other hand, if all gates are assumed to have the same propagation time τ ns, then the circuit of Fig. 40a has a propagation time equal to 3τ ns while the circuit of Fig. 40b has a propagation time equal to 2τ ns. Thus, the circuit of Fig. 40a could be less expensive in terms of number of transistors but with a longer propagation time than the circuit of Fig. 40b. In function of the system specification, the designer will have to choose between a faster but more expensive implementation or a slower and cheaper implementation (speed vs.
Digital Systems: From Logic Gates to Processors by Jean-Pierre Deschamps, Elena Valderrama, Lluís Terés