General Description

The ICS9169C-40 is a Clock Synthesizer chip for Pentium or Cyrix CPU based motherboards using PCI.

Features include eight CPU clocks and six PCI clocks. A Reference Output is available equal to the crystal frequency. The device meets the Pentium power-up stabilization, which requires that CPU and PCI clocks be stable within 2ms after power-up.

Features

• 8 selectable CPU clocks up to 75MHz

• Six synchronous PCI clocks

• One Referance Clock at 14.318MHz

• Power-up stabilization time = 2ms on all CPU and PCI clocks, which meets Intel PentiumPro power-up

• Low CPU and PCI clock jitter <500ps

• Low skew output

• Improved output drivers are designed for low EMI

• Test Mode

• Optional common or mixed supply mode:

(VDD = VDDL1 =VDDL2 = 3.3V)

(VDD = 3.3V,VDDL1=VDDL2 = 2.5)

(VDD = 3.3V, VDDL1 = 3.3V, VDDL2 = 2.5V)

• Space saving and low cost 34-pin SSOP package