標題: 用何種工具跑PLL模擬? [打印本頁] 作者: jerryyao 時間: 2009-1-1 12:10 PM 標題: 用何種工具跑PLL模擬? Recently, I use hspice to run a simulation of PLL which is created by other people. I had been doing it for several days. Nothing get becuase hspice always generates a core dump and terminated. The reason is hspice can't generate an output file which is bigger than 2GB under linux OS. Does someone know how to solve this problem? , O; H& d& h8 D% }Another question is hspice needs a couple of days to run whole PLL simulation. Does someone know which simulator is better to use for PLL simulation ? , i. k: U# T' n9 C1 }0 {Thanks.作者: finster 時間: 2009-1-1 02:39 PM
若你用hspice來模擬PLL,不要把所有的節點都記錄,用.probe把想要觀看的節點列出來即可,這樣子一來應該可以避掉.tr檔會超過2G的限制1 j0 [. o4 }7 r9 t2 b1 c
另外,若想更快知道PLL模擬出來的結果,我以前是用spectre這套軟體來跑PLL的模擬,速度大概是hspice的2~3倍快左右,精準度和hspice差不多 ; }: }: n2 A5 M) q1 f9 X以前在跑PLL時,各個sub-block是用hspice來模擬,整個PLL則由spectre來跑,等到spectre都確認無誤了,會再用hspice再跑一次確認其正確性作者: jerryyao 時間: 2009-1-1 07:01 PM
謝謝您的回答,我已經有用.option probe和.probe來限制想要觀看的節點,但因我的輸入是kHz級的訊號並產生高達百MHz的輸出,光是輸入訊號要產生多一點的pulse就要好久,好麻煩喔,看來我要去多學一套tool了。不過請問如果用nanosim跑如何?作者: finster 時間: 2009-1-2 10:07 AM