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

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� 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)

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下skill command處 提示動作 提示mouse key功能

� CIW MENUS

初始視窗初始視窗初始視窗初始視窗(2)(2)(2)(2)

建立新的Library或Cell View將檔案轉入將檔案轉出

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� Library Manager

初始視窗初始視窗初始視窗初始視窗(3)(3)(3)(3)

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� Library Manager Menus

初始視窗初始視窗初始視窗初始視窗(4)(4)(4)(4)

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� File � New � Library

Create Library, Cell (1/3)

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Create Library, Cell (2/3)

在Name輸入library名稱(ex:hw1)，點選OK

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� Compiler a new library with 0.18 technology file

鍵入018ms.tf，點選OK

Create Library, Cell (3/3)

� File � New � Cellview

點選Library Name

輸入Cell Name (ex:inv)

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� 點選OK，開啟layout editor畫面

Tool 改選Virtuoso

Layout Editor

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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

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不顯示cellview中均不可使用

Layout Editor Menus

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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

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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)

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Create Ruler

� Window � Create Ruler

� Hot Key：k

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Rectangle

� Create � Rectangle

� Hot Key：r

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Clear All Rulers

� Window � Clear All Rulers

� Hot Key：shift+k

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Polygon

� Create � Polygon

� Hot Key：shift+p

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Stretch

� Edit � Stretch

� Hot Key：s

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Move

� Edit � Move

� Hot Key：m

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Copy

� Edit � Copy

� Hot Key：c

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Path

� Create � Path

� Hot Key：p

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Merge

� Edit � Merge

� Hot Key：shift+m

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Chop

� Edit � Other � Chop

� Hot Key：shift+c

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Instance Cell (1/2)

� Create � Instance

� Hot Key：i

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Instance Cell (2/2)

� Hot Key：� Shift+f：顯示Instance內容

� Ctrl+f ：隱藏Instance內容

Shift+f

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Shift+f

Ctrl+f

Flatten

� Edit � Hierarchy � Flatten

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Contact

� Create � Contact

� Hot Key：o

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Label

� Create � Label

� Hot Key：l

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Split

� Edit � Other � Split

� Hot Key： Ctrl+s

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Layout’s Hot Key

F2 save p create path

m move c copy

s stretch del delete

u undo i create instance

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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…

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Stream In

� CIW：File � Import � Stream…

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Inverter Layout Diagram

P MOS

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N MOS

Cross Section vs. Layout View

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Design Rules Check (DRC)(1/7)

� Calibre � Run DRC

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Design Rules Check (2/7)

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Design Rules Check (3/7)

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Design Rules Check (4/7)

� Setup � DRC Options

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� Run DRC

Design Rules Check (5/7)

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Design Rules Check (6/7)

� View �� Show Empty Checks

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Design Rules Check (7/7)

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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

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新的runset file讀取runset file

儲存

另存

Previous Work for LVS(1/2)

1. Type I

Type II

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Type I can’t find “top cell name”!!

2.

Previous Work for LVS(2/2)

Modify “pch” & “nch” to “p” & “n”

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Schematic

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

SchematicLayout

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Layout vs. Schematic (2/9)

� Calibre � Run LVS

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Layout vs. Schematic (3/9)

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檔名最好不要跟自己寫的Spice檔 (**.sp)相同,檔案容易被覆蓋

Layout vs. Schematic (4/9)

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

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

Layout vs. Schematic (5/9)

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Layout vs. Schematic (6/9)

� Setup � LVS Options

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Layout vs. Schematic (7/9)

� Run LVS

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Layout vs. Schematic (8/9)

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Layout vs. Schematic (9/9)

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PEX (1/9)

� Calibre � Run PEX

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PEX (2/9)

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PEX (3/9)

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此處的設定與 LVS 相同

PEX (4/9)

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PEX (5/9)

� Setup � PEX Options

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PEX (6/9)

� Run PEX

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PEX (7/9)

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� Go to Line: 2601

PEX (8/9)3.存檔離開，重新Run PEX

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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)

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Post-Layout Simulation

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

with Debussy

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Buffer Example

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DRC

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