RE: High speed capacitors

[Dennis Fahey <dennisf@cisco.com>]

I'd recommend Marty Graham/Howard Johnson's book - "High Speed Digital Design" -Prentice Hall; ISBN: 0133957241 
... it has good insight on decoupling and high speed issues in general. He writes in a good accessable style. His courses are very good too.
dennisf


-----Original Message-----
From:	Eric de Jong [SMTP:info@simultime.nl]
Sent:	Tuesday, June 06, 2000 7:27 AM
To:	pci-sig@znyx.com
Subject:	High speed capacitors

>From the book PCI hardware & software:

"However, the PCI bus specification does state that twelve 0.01 uF high
speed capacitors must be evenly spaced between the 3.3 volt and ground
layers."

What does the spec. mean with "high speed" capacitors?
e.g. the philips databook has the folowing capacitor ranges:
Class 1 NPO , Class 2 X7R, Y5V, Z5U

types of dielectric EIA/IEC, CECC:
COG/NPO/CG,
X7R/ 2R1,
Y5V/2F4,
Z5U/2E6

Who can shine a bit of light on this matter?

Eric de Jong.