Cadence Tool Cadence Tool ––Virtuoso Virtuoso

Cadence Tool Cadence Tool –– VirtuosoVirtuoso

林冠宇、游雲超

1

林冠宇、游雲超

Advanced Reliable Systems(ARES) Lab.

原作:賴駿凱

Prepare Files (Work Station)

� Linux platform� source /APP/cshbank/icfb.csh

� Technology File� TSMC 0.18um Process：

� 0.18um_Virtuoso4.4.tf

Advanced Reliable

Systems (ARES) Lab.2

� display.drf

� …/vlsi/TSMC018/Virtuoso

� Library File� cds.lib

� Terminal指定資料夾並key in: icfb&

� CIW

初始視窗初始視窗初始視窗初始視窗(1)(1)(1)(1)

Advanced Reliable


下skill command處提示動作提示mouse key功能

� CIW MENUS


建立新的Library或Cell View將檔案轉入將檔案轉出

Advanced Reliable


� Library Manager


Advanced Reliable


� Library Manager Menus


Advanced Reliable


� File � New � Library

Create Library, Cell (1/3)

Advanced Reliable



在Name輸入library名稱(ex:hw1)，點選OK

Advanced Reliable


� Compiler a new library with 0.18 technology file

鍵入018ms.tf，點選OK


� File � New � Cellview

點選Library Name

輸入Cell Name (ex:inv)

Advanced Reliable


� 點選OK，開啟layout editor畫面

Tool 改選Virtuoso

Layout Editor

Advanced Reliable


Layout Selection Window (LSW)

目前所選之層

Library Name

所有層均show 於layout cellview中

除目前所選之層外在layout cellview中均

不顯示

LSW上所有層在layoutcellview中均可使用

除目前所選之層外在layoutcellview中均

設show於LSW上之層

設LSW上所選層顏色等

Advanced Reliable


不顯示cellview中均不可使用

Layout Editor Menus

Advanced Reliable


Layout Editor Environment Setup(1/2)

� Options � Display

X Snap Spacing :X 軸移動的最小間距

set grid 顯示方式

Advanced Reliable


X 軸移動的最小間距(建議設為0.005)

Value Region：0~32

Layout Editor Environment Setup(2/2)

� Options � Layout Editor

當遊標靠近 object 時即被吸到 object 邊緣

(建議取消)

Advanced Reliable


Create Ruler

� Window � Create Ruler

� Hot Key：k

Advanced Reliable


Rectangle

� Create � Rectangle

� Hot Key：r

Advanced Reliable


Clear All Rulers

� Window � Clear All Rulers

� Hot Key：shift+k

Advanced Reliable


Polygon

� Create � Polygon

� Hot Key：shift+p

Advanced Reliable


Stretch

� Edit � Stretch

� Hot Key：s

Advanced Reliable


Move

� Edit � Move

� Hot Key：m

Advanced Reliable


Copy

� Edit � Copy

� Hot Key：c

Advanced Reliable


Path

� Create � Path

� Hot Key：p

Advanced Reliable


Merge

� Edit � Merge

� Hot Key：shift+m

Advanced Reliable


Chop

� Edit � Other � Chop

� Hot Key：shift+c

Advanced Reliable


Instance Cell (1/2)

� Create � Instance

� Hot Key：i

Advanced Reliable


Instance Cell (2/2)

� Hot Key：� Shift+f：顯示Instance內容

� Ctrl+f ：隱藏Instance內容

Shift+f

Advanced Reliable


Shift+f

Ctrl+f

Flatten

� Edit � Hierarchy � Flatten

Advanced Reliable


Contact

� Create � Contact

� Hot Key：o

Advanced Reliable


Label

� Create � Label

� Hot Key：l

Advanced Reliable


Split

� Edit � Other � Split

� Hot Key： Ctrl+s

Advanced Reliable


Layout’s Hot Key

F2 save p create path

m move c copy

s stretch del delete

u undo i create instance

Advanced Reliable


o create contact ^s split

^z/Z zoom in/zoom out r rectangle

k/K ruler/clear all ruler l label

q properties f fit all

Stream Out

� CIW：File � Export � Stream…

Advanced Reliable


Stream In

� CIW：File � Import � Stream…

Advanced Reliable


Inverter Layout Diagram

P MOS

Advanced Reliable


N MOS

Cross Section vs. Layout View

Advanced Reliable


Design Rules Check (DRC)(1/7)

� Calibre � Run DRC

Advanced Reliable


Design Rules Check (2/7)

Advanced Reliable



Advanced Reliable



� Setup � DRC Options

Advanced Reliable


� Run DRC


Advanced Reliable



� View �� Show Empty Checks

Advanced Reliable



Advanced Reliable


儲存儲存儲存儲存Runset File

� Calibre的一些設定，如Rule File的位置、產生檔案放置的位置，都可以儲存在Runset File。

� Calibre DRC視窗：

新的runset file

Advanced Reliable


新的runset file讀取runset file

儲存

另存

Previous Work for LVS(1/2)

1. Type I

Type II

Advanced Reliable


Type I can’t find “top cell name”!!

2.

Previous Work for LVS(2/2)

Modify “pch” & “nch” to “p” & “n”

Advanced Reliable


Schematic

Advanced Reliable


Layout vs. Schematic (LVS)(1/9)

SchematicLayout

Advanced Reliable


Layout vs. Schematic (2/9)

� Calibre � Run LVS

Advanced Reliable



Advanced Reliable


檔名最好不要跟自己寫的Spice檔 (**.sp)相同,檔案容易被覆蓋


想從Schematic直接驗證：� On用自己的Spice檔驗證：� Off

Advanced Reliable


一個Spice檔裡，可能有許多Cell(Subckt)，選擇你所要驗證的Cell


Advanced Reliable



� Setup � LVS Options

Advanced Reliable



� Run LVS

Advanced Reliable



Advanced Reliable



Advanced Reliable


PEX (1/9)

� Calibre � Run PEX

Advanced Reliable


PEX (2/9)

Advanced Reliable


PEX (3/9)

Advanced Reliable


此處的設定與 LVS 相同

PEX (4/9)

Advanced Reliable


PEX (5/9)

� Setup � PEX Options

Advanced Reliable


PEX (6/9)

� Run PEX

Advanced Reliable


PEX (7/9)

Advanced Reliable


� Go to Line: 2601

PEX (8/9)3.存檔離開，重新Run PEX

Advanced Reliable


1.開始編輯模式

2. rules檔的路徑修改到自己資料夾的絕對路徑

PEX (9/9)

Advanced Reliable


Post-Layout Simulation

� Modify *.pex.netlist file� Run Hspice simultion� Watch the waveform

with Debussy

Advanced Reliable


Buffer Example

Advanced Reliable


DRC

Advanced Reliable


Cadence Tool Cadence Tool ––Virtuoso Virtuoso

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