Spartan-3A系列配置用户指南Spartan-3GenerationGenerationConfiguration UserConfigurationGuideSpartan-3A,Spartan-3E,Spartan-and3E,and Spartan-3Spartan-3FPGAFamiliesFPGAFamilies[optional]UG332(v1.4)July1,2008[optional]RRXilinx is disclosing this Documentand Intellectual Property(hereinafter“the Design”)to you for use in the development of designs to operateon,or interface with Xilinx FPGAs.Except as stated herein,none of the Design may be copied,reproduced,distributed,republished,downloaded,displayed,posted,or transmitted in any form or by any means including,but not limited to,electronic,mechanical,photocopying,recordin