请教高手Astro问题

在刚开始CTS设置clock common options后，出现一些waring
waring：cell port PO2W/PAD with unknow direction,assumed as input direction
waring：cell port PO2W/I with unknow direction,assumed as input direction
waring：cell port PIW/PAD with unknow direction,assumed as input direction
waring：cell port PIW/C with unknow direction,assumed as input direction
waring: i0: PAD is an implicit ignore pin since it is an non-clock pin
waring: i1: PAD is an implicit ignore pin since it is an non-clock pin
我用的SMIC18工艺，其中PO2W PIW 分别是所用的输出信号PAD、输入信号PAD，
i0,i1是连接两个时钟信号的PAD的实例名
设置完后，通过clock browse观察时钟树结构，只能看到两个时钟信号连接到i0,i1PAD，但是不连接到摆放在core内部的时序元件的时钟引脚上。

时钟树报告如下
**********************************************************************
*
*Clock Tree Reports
*
*Tool: Astro
*Version : Z-2007.03-SP10 for SUN.64 -- Jan_06,_2009
*Design: pre_cts_copy
*Date: Fri Aug 27 20:25:46 2010
*
**********************************************************************

======== Clock tree overview ======================================
1. clock clk480
0 sink pins
0 gate/macro pins
1 ignore pins
0 gate levels
2. clock clk60
0 sink pins
0 gate/macro pins
1 ignore pins
0 gate levels
Summary
total number of clocks : 2
total number of sink pins : 0
total number of gate/macro pins : 0
total number of ignore pins : 2
maximum number of sink pins : 0
maximum number of gate/macro pins : 0
maximum number of ignore pins : 1
maximum number of gate levels : 0

======== User defined sync pins ======================================

======== Explicit ignored sink pins ======================================
1. clock clk480
2. clock clk60

======== Implicit ignored sink pins ======================================
C = clock port without trigger edges
N = non-clock port
O = open pin
I = implicit ignore pin
--------------------------------------
1. clock clk480
(I) clk480
(N) i0AD
(I) i0AD
2. clock clk60
(I) clk60
(N) i1AD
(I) i1:PAD

======== Clock domain overlaps ======================================

How about make a fake *.lib to define PAD cell function/timing?

时钟信号连接到的pin无clock属性

要怎么解决呀?谢谢了
3# zh123456789

自己顶

呵呵，学习了。

学习了。。

xiexie！！