求教：inout 端口的 pad 设置问题！
加入 pad 时，可以用 脚本 文件进行综合，或者手动写 pad 的设置文件。
现遇到 inout 三态端口，如何进行 pad 的设置?因工艺 IO 库中没有看到有 inout 类型的 pad。
求教，多谢！
sevid
IO库中的PAD肯定是inout类型的。你仔细检查它的datasheet看看。
在DC中，使用“report_lib **”命令后得到：
Components:
Attributes:
af - active falling
ah - active high
al - active low
ar - active rising
b - black box (function unknown)
ce - clock enable
cg - clock gating integrated cell
d - dont_touch
mo - map_only
p - preferred
r - removable
s - statetable
sa0 - dont_fault stuck-at-0
sa1 - dont_fault stuck-at-1
sa01 - dont_fault both stuck-at-0 and stuck-at-1
sz - use_for_size_only
t - test cell. t(scan_type) as
t(mux_ff) - muxed flip-flop
t(mux_ld) - muxed latch
t(clk_scan) - clocked scan
t(clk_scan_ld) - clocked scan latch
t(lssd_dld) - double latch LSSD
t(lssd_sld) - single latch LSSD
t(lssd_clk) - clocked LSSD
t(lssd_auxclk) - auxiliary clock LSSD
u - dont_use
udp - usable for datapath generators
Cell Footprint Attributes
-------------------------------------------
pc3b01 "pc3b_3426" pad
pc3b01d "pc3b_3426" pad
pc3b01u "pc3b_3426" pad
pc3b02 "pc3b_3426" pad
pc3b02d "pc3b_3426" pad
pc3b02u "pc3b_3426" pad
pc3b03 "pc3b_3426" pad
pc3b03d "pc3b_3426" pad
pc3b03u "pc3b_3426" pad
pc3b04 "pc3b_3426" pad
pc3b04d "pc3b_3426" pad
pc3b04u "pc3b_3426" pad
pc3b05 "pc3b_3426" pad
pc3b05d "pc3b_3426" pad
pc3b05u "pc3b_3426" pad
pc3c01 "pc3c_3426" pad
pc3d00 "pc3d_3426" b, pad
pc3d01 "pc3d_3426" pad
pc3d01d "pc3d_3426" pad
pc3d01u "pc3d_3426" pad
pc3d10 "pc3d_3426" b, pad
pc3d11 "pc3d_3426" pad
pc3d11d "pc3d_3426" pad
pc3d11u "pc3d_3426" pad
pc3d21 "pc3d_3426" pad
pc3d21d "pc3d_3426" pad
pc3d21u "pc3d_3426" pad
pc3d31 "pc3d_3426" pad
pc3d31d "pc3d_3426" pad
pc3d31u "pc3d_3426" pad
pc3o01 "pc3o_3426" pad
pc3o02 "pc3o_3426" pad
这里面没有 inout 类型吧?
求教，多谢小编！
sevid
小编和各位大虾们，请赐教啊！
多谢啦！
sevid
应该直接去.lib file中看每种cell，inout pad的 pin与普通的input、output pad会有不一样
学习了，谢谢了