Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

techfile vs TLUPlus file extraction difference in ICC,and when are these to be used?

Status
Not open for further replies.

arunkumar446

Full Member level 3
Joined
Jul 9, 2008
Messages
168
Helped
6
Reputation
12
Reaction score
3
Trophy points
1,298
Activity points
2,198
Hi,

techfile (.tf) contains parasitic model & TLUPlus also has this info. Then when does ICC use these files and what difference does it make in using either of these files?
techfile has additional info like tile, DRC rules, color, lines...etc....

Thanks in advance.
 

nav_vlsi

Advanced Member level 4
Joined
Aug 17, 2005
Messages
114
Helped
45
Reputation
90
Reaction score
32
Trophy points
1,308
Location
India
Activity points
2,065
looks like there is slight confusion here
.tf --> there are 2 techfiles one is often called as milkyway.tf while other is cadence.tf
1. milkyway.tf contains all the metal & via info required for router in ICC.
2. cadence.tf contains DRC rules, color, stream_layers, via & metal info etc. This used for Virtuoso & other cadence tools.

TLUplus VS milkyway.tf
TLUplus -- will contain resistance & cap info about all layer including active , poly , metal layers ets. -- mostly used by parasitic extraction tools
milkyway.tf -- contains info abt via & metal layers only .predominantly required for place & route tools
 

oratie

Full Member level 6
Joined
Jan 10, 2007
Messages
348
Helped
176
Reputation
350
Reaction score
170
Trophy points
1,323
Activity points
3,733
milkyway.tf may also contains parasitic model of wires (as TLUplus files). If you specify in ICC the TLUplus files, then ICC uses TLUplus files (and did not read parasitic info from .tf file). If you did not specify TLUplus, then ICC use parasitic info from milkyway.tf.

The advantage of TLUplus is that is is more accurate (than .tf) and you may have different TLUplus for different RC corners (not PVT corners). And you may specify for ICC different TLUplus for different scenarios. While milkyway.tf contains parasitic info only for one RC corner.
 
Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top