PI6C2972

12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 PI6C2972 Low Voltage PLL Clock Driver Features Fully Integrated PLL Output Frequency up to 125 MHz Compatible with PowerPC and Pentium Microprocessors 3.3V VCC + 100ps Typical Cycle–to–Cycle Jitter Packaging (Pb-free & Green available): - 52-pin LQFP (FC) Description The PI6C2972 are 3.3V compatible, PLL based clock driver devices targeted for high-performance CISC or RISC processor based systems. With output frequencies of up to 125 MHz and skews of 550ps the PI6C2972 are ideally suited for most synchronous systems. The devices offer twelve low skew outputs plus a feedback and sync output for added flexibility and ease of system implementation. The PI6C2972 features an extensive level of frequency programmability between the 12 outputs as well as the input vs output relationships. Using the select lines output frequency ratios of 1:1, 2:1, 3:1, 3:2, 4:1, 4:3, 5:1, 5:2, 5:3, 6:1 and 6:5 between outputs can be realized by pulsing low one clock edge prior to the coincident edges of the Qa and Qc outputs. The Sync output will indicate when the coincident rising edges of the above relationships will occur. The Power–On Reset ensures proper programming if the frequency select pins are set ...