General Description

The ICS9159-13 generates all clocks required for high speed RISC or CISC microprocessor systems such as 486, Pentium, PowerPC,? etc. Four different reference frequency multiplying factors are externally selectable with smooth frequency transitions. A test mode is provided to drive all clocks directly.

特性 Features

? Generates up to six processor and six bus clocks, plus two reference clocks

? Synchronous clocks skew matched to 250ps window on PCLKs and 500ps window on BCLKs

? Processor and bus clocks synchronized to each other, PCLK to BCLK skew window 600ps max

? Test clock mode eases system design

? 3.0V - 5.5V supply range

? 28-pin SOIC package