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Phase-locked loop (PLL) clock generator
Texas Instruments Semiconductor

  • phase-locked loop (PLL) clock generator Texas Instruments Semiconductor
The CDC5806 is a clock generator which synthesizes video clocks, audio clocks, CPU clock, ASIC clock, USB clock, and a memory card clock from a 54-MHz system clock.

Three phase-locked loops (PLLs) are used to generate the different frequencies from the system clock. On-chip loop filters and internal feedback eliminate the need for external components.

Since the CDC5806 is based on PLL circuitry, it requires a stabilization time to achieve phase-lock of the PLLs. The PLL stabilization time begins after the reference clock input has a stable phase and frequency.

The device operates from a single 3.3-V supply voltage. The CDC5806 device is characterized for operation from -40°C to 85°C.

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