Part 2: Structure Diagram - Alinx Cyclone IV FPGA User Manual

 One USB Uart interface for serial communication with PC or external
devices
 One-port VGA interface, VGA interface is 16bit, can display 65,536
colors, can display color pictures, etc
 A high-quality audio interface that enables audio capture and output
functions;
 A piece of RTC real time clock with battery holder, battery model CR1220
 One piece of IIC interface EEPROM 24LC04
 4 red user LEDs
 4 independent user buttons
 On-board 50M active crystal oscillator provides stable clock source for
FPGA development board
 3-Way 40-pin ALINX expansion port (0.1 inch), each expansion port with
34 IO ports, one 5V power supply, two 3.3V power supplies, three GND.
Two expansion modules can be connected at the same time, such as
expansion modules such as 4.3-inch TFT module and AD/DA module.
 Reserved JTAG port for FPGA debugging and program curing
 One way Micro SD card slot, Support SD mode and SPI mode
 Reserve a 2.5V power supply, which is Optional FPGA IO voltage 3.3V
and 2.5V

Part 2: Structure Diagram

The size of the development board is a compact 130mm x 90mm, and the
PCB is designed with a 6-layer board. There are 4 screw positioning holes
around the FPGA board for fixing the development board. The hole diameter of
the positioning hole are 3.3mm (diameter)
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Cyclone IV FPGA Development Board AX515 User Manual
Contact Email: rachel.zhou@alinx.com.cn