FreeLists / si-list / [SI-LIST] Re: 10 Layer Board Stack up

[stephanie.goedecke@xxxxxxxxxxx]

Hi Nagaraj,

It sounds like you have a good start, and also some tight performance 
requirements.
I suggest you ask your company to hire a signal integrity consultant to go 
through
this layout with you.  I can recommend Teraspeed and Mentor Graphics as two of
many good companies which could help you.

best regards,

Stephanie Goedecke

Philips - SP3D Chip Design GmbH
Petersbrunnerstr.17
82319 Starnberg / Germany

Phone:  +49-8151-270-160
Fax : +49-8151-270-200



                                                                                
                                       
                      "Nagaraj"                                                 
                                       
                      <nagaraj@embeddedwi             To:  Stephanie 
Goedecke/STN/SC/PHILIPS@EMEA1                     
                      reless.com>                      <si-list@xxxxxxxxxxxxx>  
                                       
                      Sent by:                        cc:                       
                                       
                      si-list-bounce@free             Subject:   [SI-LIST] Re: 
10 Layer Board Stack up                 
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                      2002-12-02 10:32 AM                                       
                                       
                      Please respond to                                         
                                       
                      nagaraj                                                   
                                       
                                                                                
                                       
                                                                                
                                       





Hi,


Clk Speeds are 100- 150 MHz and routed in Signal Layer 1 .

And Vias are Through hole ( 1 to 10 )

Via Size/ Drill Size  20/10,and 18/8 ( DSP Escape )

All Clk Lengths are About 4"

And Data bus and Address Bus are Routed in Signal layer 2 and 3 Respectively

Please Let me What are all the Other Inputs looking for


Regards
Nagaraj



-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx
[mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of
stephanie.goedecke@xxxxxxxxxxx
Sent: Monday, December 02, 2002 5:19 PM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Re: 10 Layer Board Stack up



Hi,

generally, the layers should be symmetrical.  The details of the layout
depend on the
details of the board.

Stephanie Goedecke

Philips - SP3D Chip Design GmbH
Petersbrunnerstr.17
82319 Starnberg / Germany

Phone:  +49-8151-270-160
Fax : +49-8151-270-200



Hi ,

In 10 Layer Board stack How Multiple Ground Plane Will be More effective and
Why.

Is there any Formula/Thumb rule behind this.

most of my Critical Signal ( CLK)  are Running at Signal Layer 1
and My Board Stack up is

Top
GND
Signal Layer 1
VCC3.3
GND
VCC2.5
Signal Layer 2
Signal Layer 3
GND
Bottom



Thanks in Advance.

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