摘自网上 : http://xilinx.eetop.cn/viewnews-1482 The DCM is a Digital Clock Manager - at its heart it is a Delay Locked Loop. This has the ability to deskew a clock, generate different phases of the clock, dynamically change the phase of a clock, generate
DCM_BASE 基本数字时钟管理模块的缩写,是相伴和频率可配置的数字锁相环电路,常用于FPGA系统中复杂的时钟管理.如需要频率和相位动态配置,则可以选用DCM_ADV原语,如需要相位动态偏移,可使用DCM_PS原语.Eg. DCM_BASE # ( .CLKDV_DIVIDE(2.0), //CLKDV分频比可以设置为1.5,2.5,3.0,3.5,14.0,15.0等 .CLKFX_DIVIDE(1), //can be any integer from 1 to 32 CLKFX信号的分配
修改custom.pll文件里 的过程event:参考例子如下,修改好后上传至$AU_TOP/resource 运行编译frmcmp_batch CUSTOM apps/apps module_type=LIBRARY compile_all=YES,重新登录即可.注意修改前先做好备份 PROCEDURE event(event_name VARCHAR2) IS -- -- This procedure allows you to execute your code at specific e