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Integrated Circuit Systems
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.
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
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