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

["Nagaraj" <nagaraj@xxxxxxxxxxxxxxxxxxxx>]

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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