Cyclone Device Handbook, Volume 2中的

Section I. PCB Layout Guidelines中有非常详细的说明。

This section includes the following chapters:
■ Chapter 1. Cyclone EP1C3T100 Device Pin Information
■ Chapter 2. Cyclone EP1C3T144 Device Pin Information
■ Chapter 3. Cyclone EP1C6 Device Pin Information
■ Chapter 4. Cyclone EP1C12 Device Pin Information
■ Chapter 5. Cyclone EP1C20 Device Pin Information
■ Chapter 6. Package Information for Cyclone Devices
■ Chapter 7. Designing with FineLine BGA Packages

altera网站有下。在google中也可以很快地搜出来。