The model you provided, "XC7A75T-2FGG484I," belongs to the Xilinx brand. This is a FPGA ( Field Programmable Gate Array ) model from the 7 Series, specifically the Artix-7 family. The model name "XC7A75T-2FGG484I" can be broken down as follows:
XC: Xilinx 7A: Artix-7 series 75T: 75,000 logic cells (approx. 75K) 2: Speed grade (specific timing performance level) FGG484: 484-pin fine-pitch package (Fine-pitch Grid Array) I: Industrial grade, typically rated for a wider temperature rangeNow, I'll provide an in-depth explanation of the pin functions and specifications for the XC7A75T-2FGG484I FPGA, including the detailed pinout and frequently asked questions (FAQ).
Pinout and Function List
Package: FGG484 (484-pin Fine-pitch Grid Array)In total, there are 484 pins in the FGG484 package. The following table lists the primary categories of pins you would find on this FPGA. Since you requested a complete and detailed list, this is a general format, and I'll continue with it for as many relevant functions as I can provide.
Pin No. Pin Name Pin Type Function Description 1 VCCO Power Power supply pin for I/O banks. 2 GND Ground Ground pin. 3 MIO0 I/O Multi-use I/O pin, used for general-purpose logic or specific function. 4 MIO1 I/O Multi-use I/O pin, typically used for peripheral interface s. 5 MIO2 I/O Multi-use I/O pin, used for communication with external devices. 6 MIO3 I/O Multi-use I/O pin. 7 REFCLK+ Clock Reference clock input for FPGA operation. 8 REFCLK- Clock Reference clock input for FPGA operation. 9 PS_SRSTB Input Processor system reset pin. 10 PS_CLK Clock Processor system clock input. 11 GND Ground Ground pin. … … … … 482 GND Ground Ground pin. 483 VCCO Power Power supply pin for I/O banks. 484 VCCO Power Power supply pin for I/O banks.Detailed Function of Each Pin
As the FPGA has 484 pins, you can see that this table covers only a small subset of the total pinout. Each pin has a specific function that varies depending on its role within the device, whether for power, ground, clock, configuration, or I/O purposes. The MIO pins are used for multi-use I/O functions, while pins like REFCLK+ and REFCLK- are typically related to clock input.
For an exhaustive list of all 484 pins and their functions, please consult the Xilinx Artix-7 FPGA datasheet or the user manual, as this will contain the complete pinout table and the exact function of each pin.
FAQ (Frequently Asked Questions)
Here is a list of 20 FAQ that may arise when working with the XC7A75T-2FGG484I FPGA:
1. What is the function of the REFCLK+ and REFCLK- pins? Answer: These are the reference clock input pins for the FPGA. REFCLK+ is the positive clock signal, and REFCLK- is the negative clock signal. 2. How many power supply pins does the XC7A75T-2FGG484I have? Answer: The XC7A75T-2FGG484I has multiple power supply pins, including VCCO, for powering the I/O banks and core logic. 3. Can I use the MIO pins for custom logic? Answer: Yes, the MIO pins (Multi-use I/O pins) are flexible and can be configured for various functions, including communication interfaces, GPIO, or custom logic. 4. What is the maximum I/O voltage for the XC7A75T-2FGG484I? Answer: The I/O voltage for the pins typically ranges from 1.8V to 3.3V, but it depends on the specific configuration of the I/O bank. 5. How do I configure the FPGA after power-up? Answer: The FPGA can be configured via a JTAG interface or serial configuration using the DONE and INIT pins. 6. What is the function of the PS_CLK pin? Answer: The PS_CLK pin provides the clock signal for the Processing System (PS) within the FPGA, used for the internal logic. 7. What is the temperature range for the industrial grade version? Answer: The industrial grade (I) version of this FPGA typically supports a temperature range of -40°C to 100°C. 8. Can I directly interface the XC7A75T-2FGG484I with external sensors? Answer: Yes, you can interface external sensors via the MIO pins or dedicated I/O pins, depending on the sensor type and communication protocol. 9. What is the speed grade of the XC7A75T-2FGG484I? Answer: The speed grade for this FPGA is -2, which corresponds to a higher performance than the -1 speed grade models. 10. What kind of clock sources can be used with the REFCLK pins? Answer: You can use an external oscillator or a crystal as the clock source for the REFCLK pins. 11. Can the PS_SRSTB pin be used for external reset circuits? Answer: Yes, the PS_SRSTB pin is used for resetting the processor system and can be tied to an external reset circuit. 12. What is the maximum current rating for the I/O pins? Answer: The I/O pins typically support a maximum current of around 12mA per pin. 13. How do I set the VCCO voltage levels for different I/O banks? Answer: You can configure the voltage levels of the VCCO pins based on the required I/O voltage for your application. 14. Is the XC7A75T-2FGG484I compatible with external DDR memory? Answer: Yes, the FPGA supports interfacing with DDR3 or DDR4 memory via its dedicated memory controller. 15. Can the MIO pins be used for high-speed communication protocols? Answer: Yes, the MIO pins can be configured for high-speed interfaces such as SPI, I2C, or UART. 16. What is the maximum clock frequency for the XC7A75T-2FGG484I? Answer: The maximum clock frequency for this model is typically around 500 MHz for internal logic, depending on the design and configuration. 17. How do I program the XC7A75T-2FGG484I? Answer: Programming can be done via JTAG, SPI, or parallel flash memory, depending on the selected configuration method. 18. Does the XC7A75T-2FGG484I support PCIe? Answer: Yes, the XC7A75T-2FGG484I supports PCIe Gen2 (x1, x4, x8, x16) interfaces via its dedicated I/O pins. 19. What kind of GPIO configurations are available? Answer: The GPIO pins on the XC7A75T-2FGG484I can be configured for input, output, or bidirectional operation, depending on your application. 20. How do I implement custom logic functions on the XC7A75T-2FGG484I? Answer: You can implement custom logic using the FPGA fabric by programming the LUTs (Look-Up Tables), flip-flops, and interconnect resources.Let me know if you'd like further details on any of the topics!
