CY25901 Cypress Semiconductor, CY25901 Datasheet
CY25901
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CY25901 Summary of contents
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... Cypress Semiconductor Corporation Document #: 38-07521 Rev. ** Spread Spectrum Clock Generator Description The CY25901 clock generator provides a low-electromagnetic interference (EMI) clock output. It features Spread Spectrum technology, a modulation technique designed specifically for reducing EMI at the fundamental frequency and its harmonics. CLKOUT (Spread Spectrum) ...
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... The SSCG function is enabled when SSON pin is set to low. Resulting in a spread bandwidth that is center spread, amount as selected by SSSEL (see Table 1). Figure 1. Modulation Frequency Profile Spread Spectrum 0 -10 -20 -30 -40 -50 -60 -70 - Frequency(MHz) Figure 2. Spread Spectrum CY25901 SS-ON SS-OFF 42 43 Page ...
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... T Outputs Rise Time R [4] T Outputs Fall Time F BW%1 CY25901SC, Spread % BW%2 CY25901SC, Spread % BW%3 CY25901SC–1, Spread % BW%4 CY25901SC–1, Spread % T Power up to Stable Output PU [5] T CLKOUT Duty Cycle DC T REFOUT Cycle to Cycle jitter CCJ T CLKOUT Cycle to Cycle jitter CCJ Fmod Frequency Modulation Rate Notes: 1 ...
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... REFOUT 3 6 VSS SSSEL 4 5 XIN XOUT XTAL CL1 CL2 Figure 3. Application Schematic Package Type 8-lead (150-Mil) SOIC S8 CY25901 R2 REFOUT Production Flow Commercial, – +85 C Commercial, – +85 C Commercial, – +85 C Commercial, – +85 C 51-85066-A Page ...
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... Document History Page Document Title: CY25901 Spread Spectrum Clock Generator Document Number: 38-07521 REV. ECN NO. Issue Date ** 124075 02/19/03 Document #: 38-07521 Rev. ** Orig. of Change RGL New Data Sheet CY25901 Description of Change Page ...