Description: This function is not complex and can be easily implemented in a Programmable Logic Device (PLD) or Field Programmable Gate Array (FPGA). However, implementing this function in a small PLD may consume most of the device's I/O pins, which could undermine the advantages of using a PLD. The cost of the PLD may exceed the benefits if most of its resources are utilized for this simple function rather than opting for a more economical solution. Nevertheless, it is feasible to implement this function in a PLD while retaining sufficient space and I/O pins for additional functionalities, thereby allowing the PLD to serve as a replacement for multiple glue logic integrated circuits (ICs).
The implementation of a simple function in a PLD or FPGA offers flexibility and adaptability in electronic design. The choice of using a PLD or FPGA depends on the complexity of the function, the available resources, and the overall design requirements. When considering a small PLD, careful analysis is necessary to ensure that the I/O pin allocation does not become a limiting factor. Each I/O pin consumed reduces the capability to add further functionalities, which could lead to inefficiencies in the design process.
In cases where the function is straightforward, utilizing a less expensive alternative may be more beneficial, provided it meets the performance criteria. However, if the design anticipates future expansions or modifications, a PLD can be a strategic choice. It allows for reprogramming and adjustments without the need to redesign the entire circuit, thus offering long-term value.
When designing with PLDs, it is essential to create a schematic that clearly outlines the connections between the PLD and other components in the circuit. This includes defining the power supply connections, ground connections, and the routing of I/O pins to external devices. Additionally, the schematic should illustrate any necessary logic gates, flip-flops, or multiplexers that may be required to implement the function effectively.
In conclusion, while the initial implementation of a simple function in a PLD may seem straightforward, careful consideration must be given to resource management, cost implications, and future scalability. The ability to replace multiple glue logic ICs with a single PLD can lead to a more streamlined and efficient design, making it a valuable tool in modern electronic engineering.This is not a complex function and could be easily coded into a PLD or FPGA. However implementing this function into a small PLD might just use up most of the chip`s I/O pins and defeat the purpose of the PLD. That is; spending more for the PLD, than using most of it up implementing a much cheaper part. However it could be possible to implement th is function in a PLD and have space and I/O pins left over to implement additions functions, and using a PLD to replace one than one glue logic IC.
The schematic for this project is a modified version of the CPLD development board schematic. Several new components have been added for this project, and the completed schematic is presented below. The primary components in the schematic include the CPLD...
This encoder can generate up to 19,683 codes from 9 address lines by detecting 1, 0, or an open circuit. To initiate the transmit sequence, pin 14 should be pulsed low. The encoder will output a data stream on pin...
The System Monitor feature discussed in this article was successfully utilized by Avalon Microelectronics in two Virtex-5 FPGAs (XC5VLX330T) during their development. They encountered an unusual issue where the development board would shut down while the FPGAs were executing certain...
The schematic for this project is a modified version of the CPLD development board schematic. Several new components have been added for this project, and the completed schematic can be viewed below. The main components in the schematic are the...
The circuit is designed to fit snugly, eliminating the need for adhesive. It is recommended to test the fit multiple times, making incremental adjustments until a snug but movable fit is achieved. The entire circuit should be placed inside the...
This encoder utilizes a single contact per key keyboard and manages all other switching functions electronically. A diode connected between terminals 8 and 15 limits the output to no more than 1 V negative concerning the negative supply, Vss. The...
This article discusses practical techniques for incorporating "correctness by design" in DDR2 interfaces from a Signal Integrity (SI) perspective, utilizing the current generation of available design tools. It analyzes common DDR2 design errors and the trade-offs between various popular design...
The DE2 board features four pushbutton switches, each of which is debounced using a Schmitt Trigger circuit, as shown in Figure 1. The outputs, labeled KEY0 to KEY3, from the Schmitt Trigger are directly connected to the Cyclone II FPGA....
The transducer circuit can function as either a tone encoder or decoder by adjusting the position of switch Sl. The operating frequency of this dual-purpose circuit is set by capacitors C3 and resistor R2. Capacitors C1 and C2 are not...
We use cookies to enhance your experience, analyze traffic, and (if you allow) serve personalized ads.
By clicking Accept All, you agree to our use of cookies.
Learn more