ICS9169-01 Datasheet | Renesas

Frequency Generator and Integrated Buffers for Intel Pentium and Pentium Pro TM µµP's General Description Features The ICS9169-01 generates all clocks required for high speed - Generates four processor, six bus, three 14.318 MHz RISC or CISC microprocessor systems such as 486, Pentium/ and one 48 MHz clock for ISA bus, audio, super I/O Pentium Pro™, Power PC™, etc. Four different reference and bus bridge devices frequency multiplying factors are externally selectable with - Supports the Intel MARS chip set smooth frequency transitions. These multiplying factors can - Synchronous clocks skew matched to 250ps window on be customized for specific applications. A test mode is provided PCLKs and 500ps window on BCLKs to drive all clocks directly. - Test clock mode eases system design - Selectable multiplying ratios High drive BCLK outputs typically provide greater than 1V/ - Custom configurations available ns slew rate into 30p F loads. PCLK outputs typically provide - Output frequency ranges to 100 MHz (depending on better than 1V/ns slew rate into 20p F loads while maintaining option) 50±5% duty cycle. The REF clock outputs typically provide - 3.0V - 5.5 V supply range better than 0.5V/ns slew rates. - 28-pin SOIC and 28-pin SSOP (209-mil) packages Applications - Ideal for high-speed RISC or CISC systems such as 486, Pentium, Pentium Pro, Power PC, etc. Block Diagram PLL CLOCK 48 MHz X2 X1 XTAL OSC REF(0:2) OEN FS0 SYNC PCLK(0:3)...