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SM8702AM Datasheet Clock Generator

Manufacturer: Nippon Precision Circuits Inc

Overview: SM8702AM NIPPON PRECISION CIRCUITS INC. Clock Generator IC OVERVIEW The SM8702AM is a clock generator IC that can generate clock signals up to and exceeding 100MHz for personal puter (PC) motherboards. It uses a single 14.318MHz crystal oscillator element and 2 built-in PLLs to simultaneously and independently generate 2 CPU clocks, 6 PCI bus clocks, 2 reference clocks with the same frequency as the crystal element, 48MHz USB interface clock, and 24MHz Super I/O chip clock outputs. It also has 14 outputs that can function as SDRAM clocks by buffering an external input SDRAM clock.

Key Features

  • s PINOUT pre lim ina s s s s s s s s s s s s Intel® Pentium® II, Pentium® III, and AMD x86compatibles supported 2.5/3.3V CPU clock outputs and IOAPIC clock output 14 × SDRAM clock outputs (3 DIMMs) 2 × CPU clock outputs (60), 66, 75, 83, 95, 100, 103, 112, (124), 133MHz CPU/SDRAM clock frequencies. Values in parentheses are available as mask options. 6 × PCI bus clock outputs (one free-running output) 33MHz or 1/2, 1/3, 1/4 of the CPU clock frequency 2 × reference clock outputs and 1.

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