ICS950908 Datasheet, PDF (19/22 Pages) Integrated Circuit Systems – Programmable Timing Control Hub™ for P4™

Integrated
Circuit
Systems, Inc.
ICS950908
Preliminary Product Preview
Power Down Waveform
0ns
25ns
50ns
1
2
VCO Internal
CPU 100MHz
3.3V 66MHz
PCI 33MHz
APIC 16.7MHz
PD#
SDRAM 100MHz
REF 14.318MHZ
48MHZ
Note
1. After PD# is sampled active (Low) for 2 consective rising edges of CPUCLKs, all
the output clocks are driven Low on their next High to Low tranistiion.
2. Power-up latency <3ms.
3. Waveform shown for 100MHz
0653A—07/26/04
19