XC95288XL-7FG256C

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Complex programmable logic devices (CPLDs) are a type of programmable logic devices (PLDs) which can provide a more massive density of combinatorial and sequential logic functions than a field-programmable gate array (FPGA). CPLDs integrate all of the necessary components, including the input/output (I/O) pins, clock generator, system logic, power supply circuitry, and the programming logic, within a single logic device, which significantly reduces the design complexity and area of the printed circuit board. The XC95288XL-7FG256C is an advanced version of the Xilinx family of CPLDs and is suitable for high-end system designs, due to its advanced features.

The XC95288XL-7FG256C CPLD is often used at the system level for applications such as synchronous, asynchronous, and burst-mode memory controllers, networking, and processor to memory interfaces. In addition, the XC95288XL-7FG256C can be used for complex motor control applications, as well as high-speed communications and signal processing.

The XC95288XL-7FG256C is a 256 Macrocell CPLD with a total of 512 I/Os, which is divided into 2 blocks. Each of the blocks contains 2 banks of 256 Macrocells, which provide general-purpose logic, register, one-hot feeding, and user-defined arrays, allowing for a very flexible implementation of the design. Additionally, the versatile functions provided by the XC95288XL-7FG256C include JTAG boundary scan, output sink and source drive, internal test mode, direct port I/O manipulation, various configuration capabilities, and selective Pin programming. Moreover, the XC95288XL-7FG256C offers a complete designer's kit with demonstration, evaluation, and reference design applications.

The working principle of the XC95288XL-7FG256C is based on a combination of: Loadable Logic Array (LLA) blocks and associated controller core, register set, and control logic, to apply the programmed logic to the I/O pins; several configuration capabilities that enable it to be configured and monitored; and, a stable and reliable power supply circuitry.

In its operation, the Loadable Logic Array (LLA) blocks are responsible for the majority of the functional capability of the XC95288XL-7FG256C CPLD, and incorporate a range of logic functions and dedicated primitives, registries, timing circuits, internal memory resources, and clock/glitch detectors. The controller core is responsible for the management of the majority of the programming and configuration responsibilities, including loading macrocell values, pin-state programming, register set programming, and user array programming. The register set comprises 32 double word registers and control logic, which store information used for configuration, control functions, and data register functions.

In addition to the controller core and LLA blocks, the XC95288XL-7FG256C also incorporates a stable, reliable power supply circuitry. This circuitry provides a virtually constant voltage from either a direct or isolated power supply and ensures that the CPLD remains operational, even during difficult power supply transient events.

The XC95288XL-7FG256C CPLD is a powerful and versatile programmable logic device. It has a wide range of applications, including high-speed memory controllers, networking, processor-to-memory interfaces, and motor control. Additionally, its powerful features and advanced configuration capabilities make it suitable for a variety of complex logic designs. The XC95288XL-7FG256C is an essential tool in modern digital logic design.

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