APA600-FGG256A

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FPGAs, or Field Programmable Gate Arrays, is a type of integrated circuit (IC) that enables one to implement various functions such as digital signal processing, custom communication protocols, encryption/decryption, etc. In this paper, we will discuss the specific application field and working principle of APA 600-FGG256A FPGA by Actel Corporation.

APA 600-FGG256A is an FPGA device with 256 macrocells and 35 user-defined I/O pins. It is designed for high-speed data communications applications, such as ADSL modems, cable data modems, and ISDN cards. Additionally, it provides low-power operation and advanced recovery features for replacing ASICs (application-specific integrated circuits).

The main application field for APA 600-FGG256A is digital communication systems. It provides support for synchronous data communication by providing four 8-bit wide data channels. To enable synchronous transmission, the device interfaces with standard asynchronous data formats, such as ITU-T V.25bis, PPP, HDLC and ANSI X3-T1.2. The device is also designed for power savings and high performance, with the capability to run at speeds up to 100 MHz and dynamic bus speeds of up to 25 MHz, which decreases the need for external clock sources.

In terms of its working principle, the APA 600-FGG256A features a highly configurable architecture that allows users to create custom functions as needed. This is accomplished by programming the FPGA’s SRAM-based configurable logic blocks. The FPGA also includes 4 sets of dedicated configurable I/O pins, with each set supporting either a 2.0V, 3.3V, 5V or the optional “user” voltage. This allows users to create I/O signals that match the voltage levels of their target system.

Optionally, the APA 600-FGG256A can be provided with advanced clock recovery support. This allows the device to analyze incoming data streams and autonomously adjust its clock rate to match the rates of the data streams. This ensures reliable data transmission and reduces the need for an external clock generator.

In terms of on-chip resources, the APA 600-FGG256A has 256 macrocells, 4 block RAMs, and 35 user-defined I/O pins. Additionally, the device has two ports for JTAG-based development and programming interfaces. This allows the user to access the device’s logic structure and connect to external tools in order to program the FPGA.

To conclude, the APA 600-FGG256A FPGA by Actel Corporation is a highly configurable device with 256 macrocells, 4 block RAMs, and 35 user-defined I/O pins. Its main application field is digital communication systems, and its working principle is based on programming SRAM-based configurable logic blocks and I/O pins. Further, it features advanced features such as clock recovery support and JTAG-based development and programming interfaces. Overall, the APA 600-FGG256A is an ideal choice for projects involving high-speed digital communication systems.

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