What is a macrocell in CPLD?

What is a macrocell in CPLD?

The main building block of the CPLD is a macrocell, which contains logic implementing disjunctive normal form expressions and more specialized logic operations.

What are the building blocks of CLB?

In computing, a logic block or configurable logic block (CLB) is a fundamental building block of field-programmable gate array (FPGA) technology. Logic blocks can be configured by the engineer to provide reconfigurable logic gates.

What are the components of CPLD?

A complex programmable logic device (CPLD) is a logic device with completely programmable AND/OR arrays and macrocells. Macrocells are the main building blocks of a CPLD, which contain complex logic operations and logic for implementing disjunctive normal form expressions.

What is CPLD explain its basic architecture?

CPLD Architecture CPLD can be considered as an evolution of PAL and consists of multiple PAL structures known as macrocells. In the CPLD package, all input pins are available to each macrocell, whereas each macrocell has a dedicated output pin. The block diagram of a CPLD is shown in the following illustration.

What is macrocell VLSI?

Abstract: A new methodology for designing VLSI circuits has been developed at Harris GSS. The methodology is based on the concept of parametric macro cells. A parametric macro cell is an MSI-level circuit which can be modified by a computer program to meet the needs of a particular design.

How does a CPLD work?

A CPLD contains a bunch of PLD blocks whose inputs and outputs are connected together by a global interconnection matrix. So a CPLD has two levels of programmability: each PLD block can be programmed, and then the interconnections between the PLDs can be programmed.

How many LUTs are in a CLB?

In an effort to avoid getting lost before we really begin, here is a crude diagram illustrating this internal structure. And to itemize: one CLB = 2 slices, one slice = 4 LUTs + 8 FF. Therefore, one CLB = 8 LUTs + 16FF.

What is a slice in CLB?

Slices exist in CLB. Each slice contains two lookup tables and two registers. There are other logics in each slice, such as: multiplexer (F5, F6, F7 and F8 multiplexer), wiring and carry logic. It is the basic logical unit defined by Xilinx.

What is Server CPLD?

The CPLD consists of three parts: logic block, programmable interconnect channel, and I/O block. Simply put, The function of CPLD is to enable the server to work properly with external I/O modules, such as keyboards, monitors, and mice.

What are the applications of CPLD?

Applications of CPLD CPLD is used for loading the configuration data of a field programmable gate array from non-volatile memory. CPLDs are frequently used many applications like in cost sensitive, battery operated portable devices due to its low size and usage of low power.

What is output logic macrocell?

An output logic macrocell (“OLMC”) containing an exclusive OR gate is associated with the product terms and other outputs of a logic block such as a programmable logic array.

What is macro cell site?

A macrocell or macrosite is a cell in a mobile phone network that provides radio coverage served by a high power cell site (tower, antenna or mast). Generally, macrocells provide coverage larger than microcell.