cyclone III 原理图，很实用的原理图，找了很长时间才找到,cyclone III schematic, it is useful schematic, looking for a very long time to find

cyclone III EP3C25 开发板原理图,包括flash, sdram, usb, ethernet 等接口电路，可作设计参考。,cyclone III EP3C25 development board schematic diagram, including flash, sdram, usb, ethernet interface circuit, etc., can be used for design.

altera Cyclone V SOC开发板原理图-schematic of altera Cyclone V SOC Demo