ICS9150-02

Features:

· Generates five processor, six bus, two 14.31818MHz and 13 SDRAM clocks.
· Synchronous clocks skew matched to 250ps window on PCLKs and 500ps window on BCLKs
· Test clock mode eases system design
· Spread Spectrum available
· I²C interface for programming
· Skew from CPU (earlier) to PCI clock -1 to 4ns, center 2.6ns
· 3.0V - 3.7V supply range
· 56-pin SSOP package


Pinout




Specifications

Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. .. .. .. . . . 7.0 V
Logic Inputs . . . . . . . . . . . . . . . . . . . . . . . GND -0.5 V to VDD +0.5 V
Ambient Operating Temperature . . . . . . . . . . . . . . . 0°C to +70°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . -65°C to +150°C


Description

The ICS9150-02 generates all clocks required for high speed RISC or CISC microprocessor systems such as Intel Pentium Pro. Two different reference frequency multiplying factors are externally selectable with smooth frequency transitions. An output enable is provided for testability.

High drive PCICLK & SDRAM outputs of the ICS9150-02 typically provide greater than 1 V/ns slew rate into 30pF loads. CPUCLK outputs typically provide better than 1V/ns slew rate into 20pF loads while maintaining 50 ±5% duty cycle. The REF clock outputs typically provide better than 0.5V/ns slew rates.