ICS950227 Datasheet, PDF (3/17 Pages) Integrated Circuit Systems – Programmable Timing Control Hub for P4

Integrated
Circuit
Systems, Inc.
Truth Table
FS2
FS1
0
0
0
0
0
1
0
1
Mid
0
Mid
0
Mid
1
Mid
1
FS0
CPU 3V66 (5:0)
(MHz) (MHz)
PCI_F
PCI
(MHz)
REF0
(MHz)
USB/DOT
(MHz)
0
66.66 66.66
33.33
14.318
48.00
1
100.00 66.66
33.33
14.318
48.00
0
200.00 66.66
33.33
14.318
48.00
1
133.33 66.66
33.33
14.318
48.00
0
Tristate Tristate Tristate
Tristate
Tristate
1
TCLK/2 TCLK/4 TCLK/8
TCLK
TCLK/2
0 Reserved Reserved Reserved Reserved Reserved
1 Reserved Reserved Reserved Reserved Reserved
Maximum Allowed Current
Condition
Powerdown Mode
(PWRDWN# = 0)
Max 3.3V supply consumption
Max discrete cap loads,
Vdd = 3.465V
All static inputs = Vdd or GND
40mA
Full Active
360mA
ICS950227
Host Swing Select Functions
MULTISEL0
Board Target
Trace/Term Z
1
50 ohms
Reference R,
Iref =
V_DD/(3*Rr)
Rr = 475 1%,
Iref = 2.32mA
Output
Current
Voh @ Z
Ioh = 6* I REF 0.7V @ 50
0641D—07/03/03
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