ics9248-78 Integrated Device Technology, ics9248-78 Datasheet - Page 12

• Manufacturer Part Number: ics9248-78
• Description: Frequency Timing Generator For Pentium Ii Systems
• Manufacturer: Integrated Device Technology

Preliminary Product Preview
ICS9248-78
CPU & IOAPIC load (lumped) = 20pf; PCI, SDRAM, 3V66 LOAD (LUMPED) = 30pf.
CPU (at 66MHz) to
3V66
CPU (at 100MHz) to
SDRAM
3V66 to PCI
IOAPIC to PCI
Group Skews at Common Transition Edges:
GROUP
S
SYMBOL
S
S
CPU2-SDRAM
S
CPU1-3V66
IOAPIC-PCI
3V66-PCI
3V66 @ 1.5V, PCI @ 1.5V
IOAPIC @ 1.25V, PCI @1.5V
CPU @ 1.25V, SDRAM @ 1.5V (Note: 180°
CPU @ 1.25V, 3V66 @ 1.5V (Note: 180°
Group Offset Waveforms
offset between CPU & 66MHz
offset between CPU & 3V66
CONDITIONS
MIN
1.5
0
0
0
TYP
2.1
MAX UNITS
500
500
500
4
ps
ps
ns
ps