PCK2010R CK98R 100/133MHz RCC spread spectrum system clock generator

PCK2010R CK98R 100/133MHz RCC spread spectrum system clock generator

The PCK2010R is a clock generator (frequency synthesizer) chip for a Pentium II and other similar processors. The PCK2010R has four CPU clock outputs at 2.5 V, two CPUDIV2 clock outputs running at ½ CPU clock frequency (66 MHz or 50 MHz depending on the state of SEL133/100) and four 3V66 clocks runn.

Features

• Mixed 2.5 V and 3.3 V operation
• Four CPU clocks at 2.5 V
• Eight PCI clocks at 3.3 V, one free-running (synchronous with CPU clocks) Finally, when the PWRDWN input pin is asserted, the internal reference oscillator and PLLs are shut down, and all outputs are driven LOW. PIN CONFIGURATION VSS 1 REF0 REF1 VDD3V XTAL_IN XTAL_OUT 2 3 4 5 6 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 VDD25V APIC2 APIC1 APIC0 VSS VDD25V CPUDIV2_1 CPUDIV2_0 VSS VDD25V CPUCLK3 CPUCLK2 VSS VDD25V CPUCLK1 CPUCLK0 VSS VDD3V VSS PCISTOP CPUSTOP PWRDWN SPREAD SEL1 SEL0 VDD3V 4.