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CY26121ZC-31 Datasheet(PDF) 1 Page - Cypress Semiconductor |
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CY26121ZC-31 Datasheet(HTML) 1 Page - Cypress Semiconductor |
1 / 7 page CY26121 PacketClock™ Spread Spectrum Clock Generator Cypress Semiconductor Corporation • 198 Champion Court • San Jose , CA 95134-1709 • 408-943-2600 Document #: 38-07350 Rev. *A Revised May 22, 2008 Features ■ Integrated phase-locked loop (PLL) ■ Low jitter, high-accuracy outputs ■ 3.3V operation ■ 25-MHz input frequency ■ 66.66-MHz or 33.33-MHz selectable output frequency (orig, -3,-11,-31) ■ 33.33-MHz or 25-MHz selectable output frequency (-2,-21) Benefits ■ High-performance PLL tailored for Spread Spectrum appli- cation ■ Meets critical timing requirements in complex system designs ■ Enables application compatibility ■ Works with commonly available crystal or driven reference ■ Downspread Spread Spectrum with 30-kHz nominal modulation frequency Table 1. Frequency Table for CLKA-D Part Number CLKSEL=0 CLKSEL=1 Spread% Parallel Crystal Load CY26121 66.66 MHz 33.33 –2.8% 6 pF CY26121-2 33.33 MHz 25.00 –2.8% 6 pF CY26121-3 66.66 MHz 33.33 –1.4% 6 pF CY26121-11 66.66 MHz 33.33 –2.8% 15 pF CY26121-21 33.33 MHz 25.00 –2.8% 15 pF CY26121-31 66.66 MHz 33.33 –1.4% 15 pF 25 MHz XIN XOUT CLKA OUTPUT MULTIPLEXER AND DIVIDERS OSC. CLKC VDDL AVSS AVDD VSS CLKB REF VSSL VDD CLKD PLL with Modulation Control Flash Configuration SSON CLKSEL Logic Block Diagram [+] Feedback |
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