|
马上注册,结交更多好友,享用更多功能,让你轻松玩转社区。
您需要 登录 才可以下载或查看,没有账号?注册
x
在Quartus中调用FFT的IP核,用的器件是cyclone 3,手册上说3代得ip核是preliminary的,时序仿真有点问题,不知道这是怎么回事。自己用的是streaming的结构,ready,valid,sop,eop也都加了,但是就是没有fft数据出来。仿真时间也足够长,采用64点,512点都试过了,时序仿真的时候报warning:
Warning: Can't display state machine states -- register holding state machine bit "|fft_test|FFT:inst|asj_fft_sglstream_fft_72:asj_fft_sglstream_fft_72_inst|fft_s1_cur.last_input" was synthesized away
Warning: Can't display state machine states -- register holding state machine bit "|fft_test|FFT:inst|asj_fft_sglstream_fft_72:asj_fft_sglstream_fft_72_inst|fft_s1_cur.check_dav" was synthesized away
Warning: Can't display state machine states -- register holding state machine bit "|fft_test|FFT:inst|asj_fft_sglstream_fft_72:asj_fft_sglstream_fft_72_inst|fft_s1_cur.write_input" was synthesized away
Warning: Can't display state machine states -- register holding state machine bit "|fft_test|FFT:inst|asj_fft_sglstream_fft_72:asj_fft_sglstream_fft_72_inst|fft_s1_cur.wait_for_input" was synthesized away
还有好几个这样的warning,不知道大家遇到没有,求高人解答 |
|