C9851 Datasheet, PDF (8/14 Pages) Cypress Semiconductor – Clock Generator for Pentium III Server and Workstation Applications

PRELIMINARY
C9851
Clock Generator for Pentium^III Server and Workstation Applications
Power Management Functions
Host Swing Select Functions
MultSel0 MultSel1
Board Target
Trace/TermZ
Reference Rr, Iref = Output Current Voh @Z, Iref =
Vdd/(3*Rr) Note2
2.32mA
0
0
60 Ohms
Rf = 475 1%,
Iref = 2.32mA
Ioh = 5*Iref
0.7V @ 60
0
0
50 Ohms
Rr = 475 1%,
Iref = 2.32mA
Ioh = 5*Iref
0.59V @ 50
0
1
60 Ohms
Rr = 475 1%,
Iref = 2.32mA
Ioh = 6*Iref
0.85V @ 60
0
1
50 Ohms
Rr = 475 1%,
Iref = 2.32mA
Ioh = 6*Iref
0.71V @ 50
1
0
60 Ohms
Rr = 475 1%,
Iref = 2.32mA
Ioh = 4*Iref
0.56V @ 60
1
0
50 Ohms
Rr = 475 1%,
Iref = 2.32mA
Ioh = 4*Iref
0.47V @ 50
1
1
60 Ohms
Rr = 475 1%,
Iref = 2.32mA
Ioh = 7*Iref
0.99V @ 60
1
1
50 Ohms
Rr = 475 1%,
Ioh = 7*Iref
0.82V @ 50
Iref = 2.32mA
Note1: The entries in boldface are the primary system configurations of interest. The outputs should be optimized for
these configurations.
Note2: Rr refers to the resistance placed in series with the Iref input and Vss.
Table 4
Cypress Semiconductor Corporation
525 Los Coches St.
Milpitas, CA 95035. Tel: [phone], Fax: [phone]
http://www.cypress.com
Document#: 38-07068 Rev. **
05/04/2001
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