Part 4: Fpga Chip - Alinx Cyclone IV FPGA User Manual

In the PCB design, the 6-layer PCB is used, and a separate power supply
layer and GND layer are reserved, so that the power supply of the entire
development board has very good stability. Test points for each power supply
are reserved on the PCB so that the user can confirm the voltage on the board.

Part 4: FPGA Chip

As mentioned earlier, the FPGA model we use is EP4CE15F23C8, which
belongs to ALTERA CYCLONE IV. This model is a FBGA package with 484 pins.
Again, explain the definition of the FPGA pin. Many people use FPGAs that are
not BGA-packaged, such as 144-pin, 208-pin FPGA chips. Their pin definitions
are made up of numbers, such as 1 to 144, 1 to 208, etc., and when we use
BGA packages. After the chip, the pin name becomes in the form of letters +
numbers, such as E3, G3, etc., so when we look at the schematic, we see the
letters + numbers, which represent the pins of the FPGA. Having said this, let's
look at the functions of the various parts of the FPGA.
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Cyclone IV FPGA Development Board AX515 User Manual
Figure 4-1: FPGA Chipset
Contact Email: rachel.zhou@alinx.com.cn